diff --git a/.gitignore b/.gitignore
index 088ba6b..f2e972d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,9 +2,5 @@
 # will have compiled files and executables
 /target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
 # These are backup files generated by rustfmt
 **/*.rs.bk
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..9fe57e4
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+[[package]]
+name = "wasi"
+version = "0.10.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d54ee1d4ed486f78874278e63e4069fc1ab9f6a18ca492076ffb90c5eb2997fd"
+dependencies = [
+ "cfg-if 1.0.0",
+ "serde",
+ "serde_json",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b33f6a0694ccfea53d94db8b2ed1c3a8a4c86dd936b13b9f0a15ec4a451b900"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fba7978c679d53ce2d0ac80c8c175840feb849a161664365d1287b41f2e67f1"
+dependencies = [
+ "cfg-if 1.0.0",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.74"
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+checksum = "088169ca61430fe1e58b8096c24975251700e7b1f6fd91cc9d59b04fb9b18bd4"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.74"
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+checksum = "be2241542ff3d9f241f5e2cb6dd09b37efe786df8851c54957683a49f0987a97"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.74"
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+
+[[package]]
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+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "webpki"
+version = "0.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f20dea7535251981a9670857150d571846545088359b28e4951d350bdaf179f"
+dependencies = [
+ "webpki",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.21.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
+dependencies = [
+ "webpki",
+]
+
+[[package]]
+name = "which"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b55551e42cbdf2ce2bedd2203d0cc08dba002c27510f86dab6d0ce304cba3dfe"
+dependencies = [
+ "either",
+ "libc",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winreg"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
+
+[[package]]
+name = "x509-parser"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64abca276c58f8341ddc13fd4bd6ae75993cc669043f5b34813c90f7dff04771"
+dependencies = [
+ "base64 0.13.0",
+ "chrono",
+ "data-encoding",
+ "der-parser",
+ "lazy_static",
+ "nom 6.1.2",
+ "oid-registry",
+ "rusticata-macros",
+ "rustversion",
+ "thiserror",
+]
+
+[[package]]
+name = "yansi"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fc79f4a1e39857fc00c3f662cbf2651c771f00e9c15fe2abc341806bd46bd71"
+
+[[package]]
+name = "zeroize"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4756f7db3f7b5574938c3eb1c117038b8e07f95ee6718c0efad4ac21508f1efd"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2c1e130bebaeab2f23886bf9acbaca14b092408c452543c857f66399cd6dab1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..e8ecb36
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,83 @@
+[package]
+name = "icx-nns"
+version = "0.1.0"
+authors = ["DFINITY Team"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.34"
+candid = { version = "0.6.20", features = [ "random" ] }
+chrono = "0.4.9"
+clap = "3.0.0-beta.2"
+hex = {version = "0.4.2", features = ["serde"] }
+humanize-rs = "0.1.5"
+garcon = { version = "0.2", features = ["async"] }
+num-traits = "0.2"
+num-derive = "0.3"
+openssl = "0.10.32"
+ring = "0.16.11"
+serde = { version = "1.0.101", features = ["derive"] }
+serde_cbor = "0.11.1"
+serde_json = "1.0.57"
+strum = "0.20"
+strum_macros = "0.20"
+thiserror = "1.0.20"
+tokio = { version = "1.2.0", features = [ "fs" ] }
+ic-base-types = { git = "https://github.com/dfinity/ic", rev = "779549eccfcf61ac702dfc2ee6d76ffdc2db1f7f" }
+ic-nns-common = { git = "https://github.com/dfinity/ic", rev = "779549eccfcf61ac702dfc2ee6d76ffdc2db1f7f" }
+ic-nns-constants = { git = "https://github.com/dfinity/ic", rev = "779549eccfcf61ac702dfc2ee6d76ffdc2db1f7f" }
+ic-nns-governance = { git = "https://github.com/dfinity/ic", rev = "779549eccfcf61ac702dfc2ee6d76ffdc2db1f7f" }
+ledger-canister = { git = "https://github.com/dfinity/ic", rev = "779549eccfcf61ac702dfc2ee6d76ffdc2db1f7f" }
+rust_decimal = "1.10.3"
+
+[dependencies.ic-agent]
+version = "0.5.0"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+features = ["reqwest"]
+
+[dependencies.ic-identity-hsm]
+version = "0.3.1"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+
+[dependencies.ic-types]
+version = "0.1.3"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+
+[dependencies.ic-utils]
+version = "0.3.1"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+
+[patch.crates-io.ic-agent]
+version = "0.5.0"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+features = ["reqwest"]
+
+[patch.crates-io.ic-identity-hsm]
+version = "0.3.1"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+
+[patch.crates-io.ic-types]
+version = "0.1.3"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
+
+[patch.crates-io.ic-utils]
+version = "0.3.1"
+git = "https://github.com/dfinity/agent-rs.git"
+branch = "pshahi/lookup_read_state_response"
+rev = "54400dd8eb1ce6cdb6822b3cc410f15b26dcdeaf"
diff --git a/src/commands/governance/get_pending_proposals.rs b/src/commands/governance/get_pending_proposals.rs
new file mode 100644
index 0000000..9624310
--- /dev/null
+++ b/src/commands/governance/get_pending_proposals.rs
@@ -0,0 +1,28 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_nns_governance::pb::v1::ProposalInfo;
+
+const GET_PENDING_PROPOSALS_METHOD: &str = "get_pending_proposals";
+
+/// Call governance canister's get_pending_proposals method
+#[derive(Clap)]
+pub struct GetPendingProposalsOpts {}
+
+pub async fn exec(_opts: GetPendingProposalsOpts, env: Env) -> NnsCliResult {
+    let result = env
+        .agent
+        .query(&governance_canister_id(), GET_PENDING_PROPOSALS_METHOD)
+        .with_arg(Encode!(&())?)
+        .call()
+        .await?;
+
+    let proposals = Decode!(&result, Vec<ProposalInfo>)?;
+
+    println!("{:?}", proposals);
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/governance/get_proposal_info.rs b/src/commands/governance/get_proposal_info.rs
new file mode 100644
index 0000000..c8d76bd
--- /dev/null
+++ b/src/commands/governance/get_proposal_info.rs
@@ -0,0 +1,34 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_nns_governance::pb::v1::ProposalInfo;
+
+const GET_PROPOSAL_INFO_METHOD: &str = "get_proposal_info";
+
+/// Call governance canister's get_proposal_info method
+#[derive(Clap)]
+pub struct GetProposalInfoOpts {
+    /// Proposal id
+    id: u64,
+}
+
+pub async fn exec(opts: GetProposalInfoOpts, env: Env) -> NnsCliResult {
+    let result = env
+        .agent
+        .query(&governance_canister_id(), GET_PROPOSAL_INFO_METHOD)
+        .with_arg(Encode!(&(opts.id))?)
+        .call()
+        .await?;
+
+    let maybe_proposal = Decode!(&result, Option<ProposalInfo>)?;
+
+    match maybe_proposal {
+        Some(proposal) => println!("{:?}", proposal),
+        None => println!("No proposal found with id {}", opts.id),
+    };
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/governance/list_proposals.rs b/src/commands/governance/list_proposals.rs
new file mode 100644
index 0000000..d99c4a0
--- /dev/null
+++ b/src/commands/governance/list_proposals.rs
@@ -0,0 +1,94 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::{
+    governance_canister_id, ProposalRewardStatus, ProposalStatus, Topic,
+};
+use ic_nns_governance::pb::v1::{ListProposalInfo, ListProposalInfoResponse};
+
+use candid::{CandidType, Decode, Encode};
+use clap::Clap;
+use num_traits::ToPrimitive;
+use std::str::FromStr;
+
+const LIST_PROPOSALS_METHOD: &str = "list_proposals";
+
+/// Call governance canister's list_proposals method
+#[derive(CandidType, Clap)]
+pub struct ListPropsalOpts {
+    #[clap(long,
+        possible_values = &["unspecified",
+        "accept_votes", "ready_to_settle",
+        "settled", "ineligible"])]
+    include_reward_status: Option<Vec<String>>,
+
+    #[clap(long)]
+    before_proposal: Option<u64>,
+
+    #[clap(long, default_value = "100")]
+    limit: u32,
+
+    #[clap(long,
+        possible_values = &["unspecified",
+        "neuron_management", "exchange_rate", "network_economics",
+        "governance", "node_admin", "participant_management",
+        "subnet_management", "network_canister_management",
+        "kyc", "node_provider_rewards"])]
+    exclude_topic: Option<Vec<String>>,
+
+    #[clap(long,
+        possible_values = &["unspecified",
+        "open", "rejected", "adopted",
+        "executed", "failed"])]
+    include_status: Option<Vec<String>>,
+}
+
+pub async fn exec(opts: ListPropsalOpts, env: Env) -> NnsCliResult {
+    let include_reward_status: Vec<i32> = match opts.include_reward_status {
+        Some(vec) => vec
+            .iter()
+            .map(|v| ToPrimitive::to_i32(&ProposalRewardStatus::from_str(&v).unwrap()).unwrap())
+            .collect(),
+        None => Vec::<i32>::new(),
+    };
+
+    let exclude_topic: Vec<i32> = match opts.exclude_topic {
+        Some(vec) => vec
+            .iter()
+            .map(|v| ToPrimitive::to_i32(&Topic::from_str(&v).unwrap()).unwrap())
+            .collect(),
+        None => Vec::<i32>::new(),
+    };
+
+    let include_status: Vec<i32> = match opts.include_status {
+        Some(vec) => vec
+            .iter()
+            .map(|v| ToPrimitive::to_i32(&ProposalStatus::from_str(&v).unwrap()).unwrap())
+            .collect(),
+        None => Vec::<i32>::new(),
+    };
+
+    let before_proposal = opts
+        .before_proposal
+        .map(|v| ic_nns_common::pb::v1::ProposalId { id: v });
+    let limit = opts.limit;
+
+    let proposal_info = ListProposalInfo {
+        include_status,
+        include_reward_status,
+        exclude_topic,
+        before_proposal,
+        limit,
+    };
+
+    let result = env
+        .agent
+        .query(&governance_canister_id(), LIST_PROPOSALS_METHOD)
+        .with_arg(Encode!(&proposal_info)?)
+        .call()
+        .await?;
+
+    let proposal_info_response = Decode!(&result, ListProposalInfoResponse)?;
+    println!("{:?}", proposal_info_response);
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/governance/mod.rs b/src/commands/governance/mod.rs
new file mode 100644
index 0000000..4540180
--- /dev/null
+++ b/src/commands/governance/mod.rs
@@ -0,0 +1,39 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use clap::Clap;
+
+mod get_pending_proposals;
+mod get_proposal_info;
+mod list_proposals;
+mod submit_proposal;
+
+/// Call the governance canister
+#[derive(Clap)]
+#[clap(name("governance"))]
+pub struct GovernanceOpts {
+    #[clap(subcommand)]
+    subcmd: SubCommand,
+}
+
+#[derive(Clap)]
+enum SubCommand {
+    GetPendingProposals(get_pending_proposals::GetPendingProposalsOpts),
+    GetProposalInfo(get_proposal_info::GetProposalInfoOpts),
+    ListProposals(list_proposals::ListPropsalOpts),
+    SubmitProposal(submit_proposal::SubmitProposalOpts),
+}
+
+pub async fn exec(
+    opts: GovernanceOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    match opts.subcmd {
+        SubCommand::GetPendingProposals(v) => get_pending_proposals::exec(v, env).await,
+        SubCommand::GetProposalInfo(v) => get_proposal_info::exec(v, env).await,
+        SubCommand::ListProposals(v) => list_proposals::exec(v, env).await,
+        SubCommand::SubmitProposal(v) => submit_proposal::exec(v, maybe_sign_payload, env).await,
+    }
+}
diff --git a/src/commands/governance/submit_proposal/authorize_to_subnet.rs b/src/commands/governance/submit_proposal/authorize_to_subnet.rs
new file mode 100644
index 0000000..19b7252
--- /dev/null
+++ b/src/commands/governance/submit_proposal/authorize_to_subnet.rs
@@ -0,0 +1,106 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{CandidType, Decode, Encode};
+use clap::Clap;
+use ic_nns_common::pb::v1::NeuronId as NeuronIdProto;
+use ic_nns_common::types::NeuronId;
+use ic_nns_governance::pb::v1::manage_neuron_response::Command::{Error, MakeProposal};
+use ic_nns_governance::pb::v1::proposal::Action;
+use ic_nns_governance::pb::v1::NnsFunction::SetAuthorizedSubnetworks;
+use ic_nns_governance::pb::v1::{
+    manage_neuron::Command, ExecuteNnsFunction, ManageNeuron, ManageNeuronResponse, Proposal,
+};
+
+use ic_types::Principal;
+
+const MANAGE_NEURON_METHOD: &str = "manage_neuron";
+
+/// Submit a proposal to authorize a principal to one or more verified application subnetworks
+#[derive(Clap, Clone)]
+pub struct AuthToSubnetOpts {
+    /// The principal to be authorized to create canisters using ICPTs.
+    /// If who is `None`, then the proposal will set the default list of subnets
+    /// onto which everyone is authorized to create canisters to `subnets`
+    /// (except those who have a custom list).
+    #[clap(long)]
+    who: Option<Principal>,
+
+    /// The list of subnets that `who` would be authorized to create subnets on.
+    /// If `subnets` is `None`, then `who` is removed from the list of
+    /// authorized users.
+    #[clap(long)]
+    subnets: Option<Vec<Principal>>,
+}
+
+pub async fn exec(
+    opts: AuthToSubnetOpts,
+    proposal_opts: super::SubmitProposalOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    #[derive(CandidType)]
+    struct SetAuthorizedSubnetworkListArgs {
+        who: Option<Principal>,
+        subnets: Vec<Principal>,
+    }
+    let payload = Encode!(&SetAuthorizedSubnetworkListArgs {
+        who: opts.who,
+        subnets: opts.subnets.unwrap_or_default()
+    })?;
+    let nns_function = SetAuthorizedSubnetworks as i32;
+    let execute_nns_function = ExecuteNnsFunction {
+        nns_function,
+        payload,
+    };
+    let proposal = Proposal {
+        summary: proposal_opts.summary,
+        url: proposal_opts.url,
+        action: Some(Action::ExecuteNnsFunction(execute_nns_function)),
+    };
+    let id = NeuronId(proposal_opts.neuron_id);
+    let manage_neuron = ManageNeuron {
+        id: Some(NeuronIdProto::from(id)),
+        command: Some(Command::MakeProposal(Box::<Proposal>::new(proposal))),
+    };
+
+    let arg = Encode!(&manage_neuron)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: MANAGE_NEURON_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&governance_canister_id(), MANAGE_NEURON_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+            let manage_neuron_response = Decode!(&result, ManageNeuronResponse)?;
+
+            match manage_neuron_response.command {
+                Some(Error(gov_err)) => println!("{}", gov_err),
+                Some(MakeProposal(response)) => match response.proposal_id {
+                    Some(proposal_id) => println!("{:?}", proposal_id),
+                    None => {
+                        eprintln!("Propsal sent but did not receive a proposal id in response.")
+                    }
+                },
+                _ => eprintln!("Received an invalid response."),
+            };
+        }
+    };
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/governance/submit_proposal/mod.rs b/src/commands/governance/submit_proposal/mod.rs
new file mode 100644
index 0000000..0df0f50
--- /dev/null
+++ b/src/commands/governance/submit_proposal/mod.rs
@@ -0,0 +1,47 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use clap::Clap;
+
+mod authorize_to_subnet;
+mod motion;
+
+/// Submit a proposal
+#[derive(Clap, Clone)]
+#[clap(name("governance"))]
+pub struct SubmitProposalOpts {
+    #[clap(subcommand)]
+    subcmd: SubCommand,
+
+    /// Neuron id
+    neuron_id: u64,
+
+    /// Summary
+    #[clap(long)]
+    summary: String,
+
+    /// Url
+    #[clap(long)]
+    url: String,
+}
+
+#[derive(Clap, Clone)]
+enum SubCommand {
+    AuthorizeToSubnet(authorize_to_subnet::AuthToSubnetOpts),
+    Motion(motion::MotionOpts),
+}
+
+pub async fn exec(
+    opts: SubmitProposalOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let proposal_opts = opts.clone();
+    match opts.subcmd {
+        SubCommand::AuthorizeToSubnet(v) => {
+            authorize_to_subnet::exec(v, proposal_opts, maybe_sign_payload, env).await
+        }
+        SubCommand::Motion(v) => motion::exec(v, proposal_opts, maybe_sign_payload, env).await,
+    }
+}
diff --git a/src/commands/governance/submit_proposal/motion.rs b/src/commands/governance/submit_proposal/motion.rs
new file mode 100644
index 0000000..7c3ce16
--- /dev/null
+++ b/src/commands/governance/submit_proposal/motion.rs
@@ -0,0 +1,80 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{CandidType, Decode, Encode};
+use clap::Clap;
+use ic_nns_common::pb::v1::NeuronId as NeuronIdProto;
+use ic_nns_common::types::NeuronId;
+use ic_nns_governance::pb::v1::manage_neuron_response::Command::{Error, MakeProposal};
+use ic_nns_governance::pb::v1::proposal::Action;
+use ic_nns_governance::pb::v1::{
+    manage_neuron::Command, ManageNeuron, ManageNeuronResponse, Motion, Proposal,
+};
+
+const MANAGE_NEURON_METHOD: &str = "manage_neuron";
+
+/// Submit a motion to the IC.
+#[derive(CandidType, Clap, Clone)]
+pub struct MotionOpts {
+    /// The text of the motion.
+    motion_text: String,
+}
+
+pub async fn exec(
+    opts: MotionOpts,
+    proposal_opts: super::SubmitProposalOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let proposal = Proposal {
+        summary: proposal_opts.summary,
+        url: proposal_opts.url,
+        action: Some(Action::Motion(Motion {
+            motion_text: opts.motion_text,
+        })),
+    };
+    let manage_neuron = ManageNeuron {
+        id: Some(NeuronIdProto::from(NeuronId(proposal_opts.neuron_id))),
+        command: Some(Command::MakeProposal(Box::<Proposal>::new(proposal))),
+    };
+
+    let arg = Encode!(&manage_neuron)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: MANAGE_NEURON_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&governance_canister_id(), MANAGE_NEURON_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+            let manage_neuron_response = Decode!(&result, ManageNeuronResponse)?;
+
+            match manage_neuron_response.command {
+                Some(Error(gov_err)) => println!("{}", gov_err),
+                Some(MakeProposal(response)) => match response.proposal_id {
+                    Some(proposal_id) => println!("{:?}", proposal_id),
+                    None => {
+                        eprintln!("Propsal sent but did not receive a proposal id in response.")
+                    }
+                },
+                _ => eprintln!("Received an invalid response."),
+            };
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/ledger/account_id.rs b/src/commands/ledger/account_id.rs
new file mode 100644
index 0000000..d380147
--- /dev/null
+++ b/src/commands/ledger/account_id.rs
@@ -0,0 +1,19 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+
+use anyhow::anyhow;
+use clap::Clap;
+use ic_base_types::PrincipalId;
+use ledger_canister::AccountIdentifier;
+use std::convert::TryFrom;
+
+/// Prints the selected identity's AccountIdentifier.
+#[derive(Clap)]
+pub struct AccountIdOpts {}
+
+pub async fn exec(_opts: AccountIdOpts, env: Env) -> NnsCliResult {
+    let base_types_principal =
+        PrincipalId::try_from(env.sender.as_slice()).map_err(|err| anyhow!(err))?;
+    println!("{}", AccountIdentifier::new(base_types_principal, None));
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/ledger/balance.rs b/src/commands/ledger/balance.rs
new file mode 100644
index 0000000..6ec0cc8
--- /dev/null
+++ b/src/commands/ledger/balance.rs
@@ -0,0 +1,68 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::ledger_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use anyhow::anyhow;
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_base_types::PrincipalId;
+use ledger_canister::{AccountBalanceArgs, AccountIdentifier, ICPTs};
+use std::convert::TryFrom;
+use std::str::FromStr;
+
+const ACCOUNT_BALANCE_METHOD: &str = "account_balance_dfx";
+
+/// Prints the account balance of the user
+#[derive(Clap)]
+pub struct BalanceOpts {
+    /// Specifies an AccountIdentifier to get the balance of
+    of: Option<String>,
+}
+
+pub async fn exec(
+    opts: BalanceOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let base_types_principal =
+        PrincipalId::try_from(env.sender.as_slice()).map_err(|err| anyhow!(err))?;
+    let acc_id = opts
+        .of
+        .map_or_else(
+            || Ok(AccountIdentifier::new(base_types_principal, None)),
+            |v| AccountIdentifier::from_str(&v),
+        )
+        .map_err(|err| anyhow!(err))?;
+
+    let ledger_canister_id = ledger_canister_id();
+
+    let arg = Encode!(&AccountBalanceArgs { account: acc_id })?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: ledger_canister_id,
+                method_name: ACCOUNT_BALANCE_METHOD.to_string(),
+                is_query: true,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .query(&ledger_canister_id, ACCOUNT_BALANCE_METHOD)
+                .with_arg(arg)
+                .call()
+                .await?;
+
+            let balance = Decode!(&result, ICPTs)?;
+
+            println!("{}", balance);
+        }
+    };
+
+    Ok(())
+}
diff --git a/src/commands/ledger/mod.rs b/src/commands/ledger/mod.rs
new file mode 100644
index 0000000..0322715
--- /dev/null
+++ b/src/commands/ledger/mod.rs
@@ -0,0 +1,33 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use clap::Clap;
+
+mod account_id;
+mod balance;
+
+/// Call the ledger canister
+#[derive(Clap)]
+#[clap(name("ledger"))]
+pub struct LedgerOpts {
+    #[clap(subcommand)]
+    subcmd: SubCommand,
+}
+
+#[derive(Clap)]
+enum SubCommand {
+    AccountId(account_id::AccountIdOpts),
+    Balance(balance::BalanceOpts),
+}
+
+pub async fn exec(
+    opts: LedgerOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    match opts.subcmd {
+        SubCommand::AccountId(v) => account_id::exec(v, env).await,
+        SubCommand::Balance(v) => balance::exec(v, maybe_sign_payload, env).await,
+    }
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
new file mode 100644
index 0000000..ae9c561
--- /dev/null
+++ b/src/commands/mod.rs
@@ -0,0 +1,30 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use clap::Clap;
+
+mod governance;
+mod ledger;
+mod neuron;
+mod principal;
+mod send;
+
+#[derive(Clap)]
+pub enum Command {
+    GetPrincipal(principal::GetPrincipalOpts),
+    Governance(governance::GovernanceOpts),
+    Ledger(ledger::LedgerOpts),
+    Send(send::SendOpts),
+    Neuron(neuron::NeuronOpts),
+}
+
+pub async fn exec(cmd: Command, maybe_sign_payload: Option<SignPayload>, env: Env) -> NnsCliResult {
+    match cmd {
+        Command::GetPrincipal(v) => principal::exec(v, env).await,
+        Command::Governance(v) => governance::exec(v, maybe_sign_payload, env).await,
+        Command::Ledger(v) => ledger::exec(v, maybe_sign_payload, env).await,
+        Command::Send(v) => send::exec(v).await,
+        Command::Neuron(v) => neuron::exec(v, maybe_sign_payload, env).await,
+    }
+}
diff --git a/src/commands/neuron/dissolve.rs b/src/commands/neuron/dissolve.rs
new file mode 100644
index 0000000..d55910a
--- /dev/null
+++ b/src/commands/neuron/dissolve.rs
@@ -0,0 +1,102 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use anyhow::anyhow;
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_nns_common::pb::v1::NeuronId as NeuronIdProto;
+use ic_nns_common::types::NeuronId;
+use ic_nns_governance::pb::v1::manage_neuron_response::Command::Error;
+use ic_nns_governance::pb::v1::{
+    manage_neuron::configure::Operation,
+    manage_neuron::Command,
+    manage_neuron::Configure,
+    manage_neuron::IncreaseDissolveDelay,
+    manage_neuron::{StartDissolving, StopDissolving},
+    ManageNeuron, ManageNeuronResponse,
+};
+
+const MANAGE_NEURON_METHOD: &str = "manage_neuron";
+
+/// Configure the neuron's dissolve parameters
+#[derive(Clap, Clone)]
+pub struct DissolveOpts {
+    #[clap(possible_values = &["increase-delay", "start", "stop"])]
+    operation: String,
+    additional_delay_seconds: Option<u32>,
+}
+
+fn get_command(opts: DissolveOpts) -> NnsCliResult<Command> {
+    match opts.operation.as_str() {
+        "start" => Ok(Command::Configure(Configure {
+            operation: Some(Operation::StartDissolving(StartDissolving {})),
+        })),
+        "stop" => Ok(Command::Configure(Configure {
+            operation: Some(Operation::StopDissolving(StopDissolving {})),
+        })),
+        "increase-delay" => {
+            let dissolve_delay = IncreaseDissolveDelay {
+                additional_dissolve_delay_seconds:
+                    opts.additional_delay_seconds
+                        .ok_or_else(
+                            || anyhow!(
+                                "Please specify a dissolve dissolve delay i.e. `icx-nns neuron <id> dissolve increase-delay <additional-delay-seconds>"))?,
+            };
+            Ok(Command::Configure(Configure {
+                operation: Some(Operation::IncreaseDissolveDelay(dissolve_delay)),
+            }))
+        }
+        _ => unreachable!(),
+    }
+}
+
+pub async fn exec(
+    opts: DissolveOpts,
+    id: u64,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let command = get_command(opts)?;
+    let id = NeuronId(id);
+
+    let manage_neuron = ManageNeuron {
+        id: Some(NeuronIdProto::from(id)),
+        command: Some(command),
+    };
+    let arg = Encode!(&manage_neuron)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: MANAGE_NEURON_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&governance_canister_id(), MANAGE_NEURON_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+            let manage_neuron_response = Decode!(&result, ManageNeuronResponse)?;
+
+            match manage_neuron_response.command {
+                Some(Error(gov_err)) => println!("{}", gov_err),
+                Some(ic_nns_governance::pb::v1::manage_neuron_response::Command::Configure(
+                    ic_nns_governance::pb::v1::manage_neuron_response::ConfigureResponse {},
+                )) => eprintln!("Configured succesfully."),
+                _ => eprintln!("Received an invalid response."),
+            };
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/full_neuron.rs b/src/commands/neuron/full_neuron.rs
new file mode 100644
index 0000000..c729c5b
--- /dev/null
+++ b/src/commands/neuron/full_neuron.rs
@@ -0,0 +1,53 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_nns_governance::pb::v1::{GovernanceError, Neuron};
+
+const GET_FULL_NEURON_METHOD: &str = "get_full_neuron";
+
+/// Get the full neuron information
+#[derive(Clap)]
+pub struct GetFullNeuronOpts {}
+
+pub async fn exec(
+    _opts: GetFullNeuronOpts,
+    id: u64,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let arg = Encode!(&id)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: GET_FULL_NEURON_METHOD.to_string(),
+                is_query: true,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .query(&governance_canister_id(), GET_FULL_NEURON_METHOD)
+                .with_arg(arg)
+                .call()
+                .await?;
+
+            let neuron_result = Decode!(&result, Result<Neuron, GovernanceError>)?;
+
+            match neuron_result {
+                Ok(neuron) => println!("{:?}", neuron),
+                Err(gov_err) => eprintln!("{:?}", gov_err),
+            };
+        }
+    };
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/hot_key.rs b/src/commands/neuron/hot_key.rs
new file mode 100644
index 0000000..fa182f6
--- /dev/null
+++ b/src/commands/neuron/hot_key.rs
@@ -0,0 +1,107 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use anyhow::anyhow;
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_base_types::PrincipalId;
+use ic_nns_common::pb::v1::NeuronId as NeuronIdProto;
+use ic_nns_common::types::NeuronId;
+use ic_nns_governance::pb::v1::manage_neuron_response::Command::Error;
+use ic_nns_governance::pb::v1::{
+    manage_neuron::configure::Operation, manage_neuron::AddHotKey, manage_neuron::Command,
+    manage_neuron::Configure, manage_neuron::RemoveHotKey, ManageNeuron, ManageNeuronResponse,
+};
+use ic_types::Principal;
+use std::convert::TryFrom;
+
+const MANAGE_NEURON_METHOD: &str = "manage_neuron";
+
+/// Configure the neuron's hot key parameters
+#[derive(Clap, Clone)]
+pub struct HotKeyOpts {
+    hot_key: Principal,
+    #[clap(possible_values = &["add", "remove"])]
+    operation: String,
+}
+
+fn get_command(operation: String, hot_key: Principal) -> NnsCliResult<Command> {
+    match operation.as_str() {
+        "add" => {
+            let hot_key = AddHotKey {
+                new_hot_key: {
+                    let base_types_principal =
+                        PrincipalId::try_from(hot_key.as_slice()).map_err(|err| anyhow!(err))?;
+                    Some(base_types_principal)
+                },
+            };
+            Ok(Command::Configure(Configure {
+                operation: Some(Operation::AddHotKey(hot_key)),
+            }))
+        }
+        "remove" => {
+            let hot_key = RemoveHotKey {
+                hot_key_to_remove: {
+                    let base_types_principal =
+                        PrincipalId::try_from(hot_key.as_slice()).map_err(|err| anyhow!(err))?;
+                    Some(base_types_principal)
+                },
+            };
+            Ok(Command::Configure(Configure {
+                operation: Some(Operation::RemoveHotKey(hot_key)),
+            }))
+        }
+        _ => unreachable!(),
+    }
+}
+
+pub async fn exec(
+    opts: HotKeyOpts,
+    id: u64,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let command = get_command(opts.operation, opts.hot_key)?;
+    let id = NeuronId(id);
+
+    let manage_neuron = ManageNeuron {
+        id: Some(NeuronIdProto::from(id)),
+        command: Some(command),
+    };
+    let arg = Encode!(&manage_neuron)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: MANAGE_NEURON_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&governance_canister_id(), MANAGE_NEURON_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+            let manage_neuron_response = Decode!(&result, ManageNeuronResponse)?;
+
+            match manage_neuron_response.command {
+                Some(Error(gov_err)) => println!("{}", gov_err),
+                Some(ic_nns_governance::pb::v1::manage_neuron_response::Command::Configure(
+                    ic_nns_governance::pb::v1::manage_neuron_response::ConfigureResponse {},
+                )) => eprintln!("Configured succesfully."),
+                _ => eprintln!("Received an invalid response."),
+            };
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/ids.rs b/src/commands/neuron/ids.rs
new file mode 100644
index 0000000..456ad92
--- /dev/null
+++ b/src/commands/neuron/ids.rs
@@ -0,0 +1,47 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{Decode, Encode};
+use clap::Clap;
+
+const GET_NEURON_IDS_METHOD: &str = "get_neuron_ids";
+
+/// Get the neuron ids associated with your identity
+#[derive(Clap)]
+pub struct GetNeuronIdOpts {}
+
+pub async fn exec(
+    _opts: GetNeuronIdOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let arg = Encode!(&())?;
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: GET_NEURON_IDS_METHOD.to_string(),
+                is_query: true,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .query(&governance_canister_id(), GET_NEURON_IDS_METHOD)
+                .with_arg(arg)
+                .call()
+                .await?;
+
+            let ids = Decode!(&result, Vec<u64>)?;
+
+            println!("{:?}", ids);
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/info.rs b/src/commands/neuron/info.rs
new file mode 100644
index 0000000..585d759
--- /dev/null
+++ b/src/commands/neuron/info.rs
@@ -0,0 +1,53 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_nns_governance::pb::v1::{GovernanceError, NeuronInfo};
+
+const GET_NEURON_INFO_METHOD: &str = "get_neuron_info";
+
+/// Get some neuron info
+#[derive(Clap)]
+pub struct GetNeuronInfoOpts {}
+
+pub async fn exec(
+    _opts: GetNeuronInfoOpts,
+    id: u64,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let arg = Encode!(&id)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: GET_NEURON_INFO_METHOD.to_string(),
+                is_query: true,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .query(&governance_canister_id(), GET_NEURON_INFO_METHOD)
+                .with_arg(arg)
+                .call()
+                .await?;
+
+            let neuron_info_result = Decode!(&result, Result<NeuronInfo, GovernanceError>)?;
+
+            match neuron_info_result {
+                Ok(neuron_info) => println!("{:?}", neuron_info),
+                Err(gov_err) => eprintln!("{:?}", gov_err),
+            };
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/list.rs b/src/commands/neuron/list.rs
new file mode 100644
index 0000000..63cffd1
--- /dev/null
+++ b/src/commands/neuron/list.rs
@@ -0,0 +1,57 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::governance_canister_id;
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use candid::{CandidType, Decode, Encode};
+use clap::Clap;
+use ic_nns_governance::pb::v1::ListNeuronsResponse;
+
+const LIST_NEURONS_METHOD: &str = "list_neurons";
+
+/// Call governance canister's list_neurons method
+#[derive(CandidType, Clap)]
+pub struct ListNeuronsOpts {
+    // List of neuron ids
+    #[clap(long)]
+    neuron_ids: Vec<u64>,
+
+    // Include neurons readable by caller
+    #[clap(long)]
+    include_neurons_readable_by_caller: bool,
+}
+
+pub async fn exec(
+    opts: ListNeuronsOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let arg = Encode!(&opts)?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: governance_canister_id(),
+                method_name: LIST_NEURONS_METHOD.to_string(),
+                is_query: true,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .query(&governance_canister_id(), LIST_NEURONS_METHOD)
+                .with_arg(arg)
+                .call()
+                .await?;
+
+            let neurons = Decode!(&result, ListNeuronsResponse)?;
+
+            println!("{:?}", neurons);
+        }
+    }
+
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/neuron/mod.rs b/src/commands/neuron/mod.rs
new file mode 100644
index 0000000..c3726b8
--- /dev/null
+++ b/src/commands/neuron/mod.rs
@@ -0,0 +1,80 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use anyhow::{anyhow, bail};
+use clap::Clap;
+
+mod dissolve;
+mod full_neuron;
+mod hot_key;
+mod ids;
+mod info;
+mod list;
+mod stake_or_refresh;
+mod stake_or_refresh_notify;
+mod stake_or_refresh_send;
+
+/// Manage neuron subcommand
+#[derive(Clap)]
+#[clap(name("neuron"))]
+pub struct NeuronOpts {
+    #[clap(subcommand)]
+    subcmd: SubCommand,
+    id: Option<u64>,
+}
+
+#[derive(Clap)]
+enum SubCommand {
+    FullInfo(full_neuron::GetFullNeuronOpts),
+    HotKey(hot_key::HotKeyOpts),
+    Ids(ids::GetNeuronIdOpts),
+    Info(info::GetNeuronInfoOpts),
+    List(list::ListNeuronsOpts),
+    StakeOrRefresh(stake_or_refresh::StakeRefreshNeuronOpts),
+    StakeOrRefreshNotify(stake_or_refresh_notify::StakeRefreshNeuronNotifyOpts),
+    StakeOrRefreshSend(stake_or_refresh_send::StakeRefreshNeuronSendOpts),
+    Dissolve(dissolve::DissolveOpts),
+}
+
+pub async fn exec(
+    opts: NeuronOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let id = match opts.subcmd {
+        SubCommand::FullInfo(_)
+        | SubCommand::HotKey(_)
+        | SubCommand::Info(_)
+        | SubCommand::Dissolve(_) => opts.id.ok_or_else(|| {
+            anyhow!("Please specify a neuron id i.e. `icx-nns neuron <id> <SUBCOMMAND>")
+        })?,
+        SubCommand::Ids(_)
+        | SubCommand::List(_)
+        | SubCommand::StakeOrRefresh(_)
+        | SubCommand::StakeOrRefreshNotify(_)
+        | SubCommand::StakeOrRefreshSend(_) => {
+            if let Some(id) = opts.id {
+                bail!("Provided neuron id {} which is not needed for this command. Omit the neuron id and execute the command again", id);
+            } else {
+                0_u64 // unused
+            }
+        }
+    };
+
+    match opts.subcmd {
+        SubCommand::FullInfo(v) => full_neuron::exec(v, id, maybe_sign_payload, env).await,
+        SubCommand::HotKey(v) => hot_key::exec(v, id, maybe_sign_payload, env).await,
+        SubCommand::Ids(v) => ids::exec(v, maybe_sign_payload, env).await,
+        SubCommand::Info(v) => info::exec(v, id, maybe_sign_payload, env).await,
+        SubCommand::List(v) => list::exec(v, maybe_sign_payload, env).await,
+        SubCommand::StakeOrRefresh(v) => stake_or_refresh::exec(v, maybe_sign_payload, env).await,
+        SubCommand::StakeOrRefreshNotify(v) => {
+            stake_or_refresh_notify::exec(v, maybe_sign_payload, env).await
+        }
+        SubCommand::StakeOrRefreshSend(v) => {
+            stake_or_refresh_send::exec(v, maybe_sign_payload, env).await
+        }
+        SubCommand::Dissolve(v) => dissolve::exec(v, id, maybe_sign_payload, env).await,
+    }
+}
diff --git a/src/commands/neuron/stake_or_refresh.rs b/src/commands/neuron/stake_or_refresh.rs
new file mode 100644
index 0000000..88a3fc5
--- /dev/null
+++ b/src/commands/neuron/stake_or_refresh.rs
@@ -0,0 +1,144 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::{governance_canister_id, ledger_canister_id};
+use crate::lib::nns_types::utils::{
+    get_governance_subaccount, get_icpts_from_args, icpts_amount_validator, icpts_from_str,
+};
+use crate::lib::segregated_sign_send::sign::SignPayload;
+
+use anyhow::{anyhow, bail};
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_agent::Agent;
+use ic_base_types::{CanisterId, PrincipalId};
+use ic_nns_common::pb::v1::NeuronId;
+use ic_types::Principal;
+use ledger_canister::{
+    AccountIdentifier, BlockHeight, ICPTs, Memo, NotifyCanisterArgs, SendArgs, Subaccount,
+    TRANSACTION_FEE,
+};
+use std::convert::TryFrom;
+
+const SEND_METHOD: &str = "send_dfx";
+const NOTIFY_METHOD: &str = "notify_dfx";
+
+/// Stake a new neuron or refresh an existing neuron
+#[derive(Clap)]
+pub struct StakeRefreshNeuronOpts {
+    /// Specify the controller of the neuron
+    controller: String,
+
+    /// A unique numerical memo, or a nonce, associated
+    /// with the neuron. To refresh an existing neuron,
+    /// specify the same memo provided when it was created.
+    memo: u64,
+
+    /// ICP to stake or refresh into a neuron
+    /// Can be specified as a Decimal with the fractional portion up to 8 decimal places
+    /// i.e. 100.012
+    #[clap(long, validator(icpts_amount_validator))]
+    #[clap(long)]
+    amount: Option<String>,
+
+    /// Specify ICP as a whole number, helpful for use in conjunction with `--e8s`
+    #[clap(long, conflicts_with("amount"))]
+    icp: Option<u64>,
+
+    /// Specify e8s as a whole number, helpful for use in conjunction with `--icp`
+    #[clap(long, conflicts_with("amount"))]
+    e8s: Option<u64>,
+
+    /// Transaction fee, default is 10000 e8s.
+    #[clap(long, validator(icpts_amount_validator))]
+    fee: Option<String>,
+
+    /// Max fee, default is 10000 e8s.
+    #[clap(long, validator(icpts_amount_validator))]
+    max_fee: Option<String>,
+}
+
+async fn send_and_notify(
+    agent: Agent,
+    memo: Memo,
+    amount: ICPTs,
+    fee: ICPTs,
+    to_subaccount: Option<Subaccount>,
+    max_fee: ICPTs,
+) -> NnsCliResult<NeuronId> {
+    let ledger_canister_id = ledger_canister_id();
+
+    let governance_canister_id = governance_canister_id();
+
+    let gov_base_types_principal = PrincipalId::try_from(governance_canister_id.clone().as_slice())
+        .map_err(|err| anyhow!(err))?;
+
+    let to = AccountIdentifier::new(gov_base_types_principal, to_subaccount);
+
+    let result = agent
+        .update(&ledger_canister_id, SEND_METHOD)
+        .with_arg(Encode!(&SendArgs {
+            memo,
+            amount,
+            fee,
+            from_subaccount: None,
+            to,
+            created_at_time: None,
+        })?)
+        .call_and_wait(create_waiter())
+        .await?;
+
+    let block_height = Decode!(&result, BlockHeight)?;
+    println!("Transfer sent at BlockHeight: {}", block_height);
+
+    let result = agent
+        .update(&ledger_canister_id, NOTIFY_METHOD)
+        .with_arg(Encode!(&NotifyCanisterArgs {
+            block_height,
+            max_fee,
+            from_subaccount: None,
+            to_canister: CanisterId::try_from(gov_base_types_principal)
+                .map_err(|err| anyhow!(err))?,
+            to_subaccount,
+        })?)
+        .call_and_wait(create_waiter())
+        .await?;
+
+    let result = Decode!(&result, NeuronId)?;
+    Ok(result)
+}
+
+pub async fn exec(
+    opts: StakeRefreshNeuronOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    if maybe_sign_payload.is_some() {
+        bail!("The `--sign` flag isn't valid for this command since it calls the ledger canister's send_dfx and notify_dfx sequentially. Please use `icx-nns --sign neuron stake-or-refresh-send` then `icx-nns --sign neuron stake-or-refresh-notify` instead.");
+    }
+    let amount = get_icpts_from_args(opts.amount, opts.icp, opts.e8s)?;
+
+    let fee = opts
+        .fee
+        .map_or(Ok(TRANSACTION_FEE), |v| icpts_from_str(&v))
+        .map_err(|err| anyhow!(err))?;
+
+    let memo = Memo(opts.memo);
+
+    let base_types_principal =
+        PrincipalId::try_from(Principal::from_text(opts.controller)?.as_slice())
+            .map_err(|err| anyhow!(err))?;
+
+    let gov_subaccount = get_governance_subaccount(memo, base_types_principal);
+
+    let to_subaccount = Some(gov_subaccount);
+
+    let max_fee = opts
+        .max_fee
+        .map_or(Ok(TRANSACTION_FEE), |v| icpts_from_str(&v))
+        .map_err(|err| anyhow!(err))?;
+
+    let result = send_and_notify(env.agent, memo, amount, fee, to_subaccount, max_fee).await?;
+    println!("Neuron id: {:?}", result);
+    Ok(())
+}
diff --git a/src/commands/neuron/stake_or_refresh_notify.rs b/src/commands/neuron/stake_or_refresh_notify.rs
new file mode 100644
index 0000000..5ccd841
--- /dev/null
+++ b/src/commands/neuron/stake_or_refresh_notify.rs
@@ -0,0 +1,119 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::{governance_canister_id, ledger_canister_id};
+use crate::lib::nns_types::utils::{
+    get_governance_subaccount, icpts_amount_validator, icpts_from_str,
+};
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use anyhow::anyhow;
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_base_types::{CanisterId, PrincipalId};
+use ic_nns_common::pb::v1::NeuronId;
+use ic_types::Principal;
+use ledger_canister::{BlockHeight, ICPTs, Memo, NotifyCanisterArgs, Subaccount, TRANSACTION_FEE};
+use std::convert::TryFrom;
+
+const NOTIFY_METHOD: &str = "notify_dfx";
+
+/// Stake a new neuron or refresh an existing neuron
+#[derive(Clap)]
+pub struct StakeRefreshNeuronNotifyOpts {
+    /// Specify the controller of the neuron
+    controller: String,
+
+    /// A unique numerical memo, or a nonce, associated
+    /// with the neuron. To refresh an existing neuron,
+    /// specify the same memo provided when it was created.
+    memo: u64,
+
+    /// The ledger block height at which the transaction was sent.
+    block_height: u64,
+
+    /// Max fee, default is 10000 e8s.
+    #[clap(long, validator(icpts_amount_validator))]
+    max_fee: Option<String>,
+}
+
+async fn notify(
+    env: Env,
+    block_height: BlockHeight,
+    to_subaccount: Option<Subaccount>,
+    max_fee: ICPTs,
+    maybe_sign_payload: Option<SignPayload>,
+) -> NnsCliResult<()> {
+    let ledger_canister_id = ledger_canister_id();
+
+    let governance_canister_id = governance_canister_id();
+
+    let gov_base_types_principal = PrincipalId::try_from(governance_canister_id.clone().as_slice())
+        .map_err(|err| anyhow!(err))?;
+
+    let arg = Encode!(&NotifyCanisterArgs {
+        block_height,
+        max_fee,
+        from_subaccount: None,
+        to_canister: CanisterId::try_from(gov_base_types_principal).map_err(|err| anyhow!(err))?,
+        to_subaccount,
+    })?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: ledger_canister_id,
+                method_name: NOTIFY_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&ledger_canister_id, NOTIFY_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+
+            let neuron_id = Decode!(&result, NeuronId)?;
+            println!("Neuron id: {:?}", neuron_id);
+        }
+    }
+
+    Ok(())
+}
+
+pub async fn exec(
+    opts: StakeRefreshNeuronNotifyOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let memo = Memo(opts.memo);
+    let block_height: BlockHeight = opts.block_height;
+
+    let base_types_principal =
+        PrincipalId::try_from(Principal::from_text(opts.controller)?.as_slice())
+            .map_err(|err| anyhow!(err))?;
+
+    let gov_subaccount = get_governance_subaccount(memo, base_types_principal);
+
+    let to_subaccount = Some(gov_subaccount);
+
+    let max_fee = opts
+        .max_fee
+        .map_or(Ok(TRANSACTION_FEE), |v| icpts_from_str(&v))
+        .map_err(|err| anyhow!(err))?;
+
+    notify(
+        env,
+        block_height,
+        to_subaccount,
+        max_fee,
+        maybe_sign_payload,
+    )
+    .await?;
+    Ok(())
+}
diff --git a/src/commands/neuron/stake_or_refresh_send.rs b/src/commands/neuron/stake_or_refresh_send.rs
new file mode 100644
index 0000000..7b81c42
--- /dev/null
+++ b/src/commands/neuron/stake_or_refresh_send.rs
@@ -0,0 +1,130 @@
+use crate::lib::agent::create_waiter;
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+use crate::lib::nns_types::governance::{governance_canister_id, ledger_canister_id};
+use crate::lib::nns_types::utils::{
+    get_governance_subaccount, get_icpts_from_args, icpts_amount_validator, icpts_from_str,
+};
+use crate::lib::segregated_sign_send::sign::{sign_message, CanisterPayload, SignPayload};
+
+use anyhow::anyhow;
+use candid::{Decode, Encode};
+use clap::Clap;
+use ic_base_types::PrincipalId;
+use ic_types::Principal;
+use ledger_canister::{
+    AccountIdentifier, BlockHeight, ICPTs, Memo, SendArgs, Subaccount, TRANSACTION_FEE,
+};
+use std::convert::TryFrom;
+
+const SEND_METHOD: &str = "send_dfx";
+
+/// Stake a new neuron or refresh an existing neuron
+#[derive(Clap)]
+pub struct StakeRefreshNeuronSendOpts {
+    /// Specify the controller of the neuron
+    controller: String,
+
+    /// A unique numerical memo, or a nonce, associated
+    /// with the neuron. To refresh an existing neuron,
+    /// specify the same memo provided when it was created.
+    memo: u64,
+
+    /// ICP to stake or refresh into a neuron
+    /// Can be specified as a Decimal with the fractional portion up to 8 decimal places
+    /// i.e. 100.012
+    #[clap(long, validator(icpts_amount_validator))]
+    #[clap(long)]
+    amount: Option<String>,
+
+    /// Specify ICP as a whole number, helpful for use in conjunction with `--e8s`
+    #[clap(long, conflicts_with("amount"))]
+    icp: Option<u64>,
+
+    /// Specify e8s as a whole number, helpful for use in conjunction with `--icp`
+    #[clap(long, conflicts_with("amount"))]
+    e8s: Option<u64>,
+
+    /// Transaction fee, default is 10000 e8s.
+    #[clap(long, validator(icpts_amount_validator))]
+    fee: Option<String>,
+}
+
+async fn send(
+    env: Env,
+    memo: Memo,
+    amount: ICPTs,
+    fee: ICPTs,
+    to_subaccount: Option<Subaccount>,
+    maybe_sign_payload: Option<SignPayload>,
+) -> NnsCliResult<()> {
+    let ledger_canister_id = ledger_canister_id();
+    let governance_canister_id = governance_canister_id();
+
+    let gov_base_types_principal = PrincipalId::try_from(governance_canister_id.clone().as_slice())
+        .map_err(|err| anyhow!(err))?;
+
+    let to = AccountIdentifier::new(gov_base_types_principal, to_subaccount);
+
+    let arg = Encode!(&SendArgs {
+        memo,
+        amount,
+        fee,
+        from_subaccount: None,
+        to,
+        created_at_time: None,
+    })?;
+
+    match maybe_sign_payload {
+        Some(payload) => {
+            let mut sign_payload = payload;
+            sign_payload.payload = Some(CanisterPayload {
+                canister_id: ledger_canister_id,
+                method_name: SEND_METHOD.to_string(),
+                is_query: false,
+                arg,
+            });
+            sign_message(sign_payload, env.agent, env.sender).await?;
+        }
+        None => {
+            let result = env
+                .agent
+                .update(&ledger_canister_id, SEND_METHOD)
+                .with_arg(arg)
+                .call_and_wait(create_waiter())
+                .await?;
+
+            let block_height = Decode!(&result, BlockHeight)?;
+            println!("Transfer sent at BlockHeight: {}", block_height);
+        }
+    }
+
+    Ok(())
+}
+
+pub async fn exec(
+    opts: StakeRefreshNeuronSendOpts,
+    maybe_sign_payload: Option<SignPayload>,
+    env: Env,
+) -> NnsCliResult {
+    let amount = get_icpts_from_args(opts.amount, opts.icp, opts.e8s)?;
+
+    let fee = opts
+        .fee
+        .map_or(Ok(TRANSACTION_FEE), |v| icpts_from_str(&v))
+        .map_err(|err| anyhow!(err))?;
+
+    let memo = Memo(opts.memo);
+
+    let base_types_principal =
+        PrincipalId::try_from(Principal::from_text(opts.controller)?.as_slice())
+            .map_err(|err| anyhow!(err))?;
+
+    let gov_subaccount = get_governance_subaccount(memo, base_types_principal);
+
+    let to_subaccount = Some(gov_subaccount);
+
+    send(env, memo, amount, fee, to_subaccount, maybe_sign_payload).await?;
+
+    Ok(())
+}
diff --git a/src/commands/principal.rs b/src/commands/principal.rs
new file mode 100644
index 0000000..d007b2c
--- /dev/null
+++ b/src/commands/principal.rs
@@ -0,0 +1,13 @@
+use crate::lib::env::Env;
+use crate::lib::error::NnsCliResult;
+
+use clap::Clap;
+
+/// Prints the selected identity's principal
+#[derive(Clap)]
+pub struct GetPrincipalOpts {}
+
+pub async fn exec(_opts: GetPrincipalOpts, env: Env) -> NnsCliResult {
+    println!("{}", env.sender.to_text());
+    NnsCliResult::Ok(())
+}
diff --git a/src/commands/send.rs b/src/commands/send.rs
new file mode 100644
index 0000000..f4e4f82
--- /dev/null
+++ b/src/commands/send.rs
@@ -0,0 +1,139 @@
+use crate::lib::error::{NnsCliError, NnsCliResult};
+use crate::lib::segregated_sign_send::signed_message::SignedMessageV1;
+
+use anyhow::{anyhow, bail};
+use clap::Clap;
+use ic_agent::agent::{
+    lookup_read_state_response, AgentError, QueryResponse, ReplicaV2Transport,
+    RequestStatusResponse,
+};
+use ic_agent::{agent::http_transport::ReqwestHttpReplicaV2Transport, RequestId};
+use ic_types::Principal;
+use std::{fs::File, path::Path};
+use std::{io::Read, str::FromStr};
+
+/// Send a signed message
+#[derive(Clap)]
+pub struct SendOpts {
+    /// Specifies the file name of the message
+    file_name: String,
+
+    /// Send the signed request-status call in the message
+    #[clap(long)]
+    status: bool,
+}
+
+pub async fn exec(opts: SendOpts) -> NnsCliResult {
+    let file_name = opts.file_name;
+    let path = Path::new(&file_name);
+    let mut file = File::open(&path).map_err(|_| anyhow!("Message file doesn't exist."))?;
+    let mut json = String::new();
+    file.read_to_string(&mut json)
+        .map_err(|_| anyhow!("Cannot read the message file."))?;
+    let message: SignedMessageV1 =
+        serde_json::from_str(&json).map_err(|_| anyhow!("Invalid json message."))?;
+    message.validate()?;
+
+    let network = message.network.clone();
+    let transport = ReqwestHttpReplicaV2Transport::create(network)?;
+    let content = hex::decode(&message.content)?;
+    let canister_id = Principal::from_text(message.canister_id.clone())?;
+
+    if opts.status {
+        if message.call_type.clone().as_str() != "update" {
+            bail!("Can only check request_status on update calls.");
+        }
+        if message.signed_request_status.is_none() {
+            bail!("No signed_request_status in [{}].", file_name);
+        }
+        let envelope = hex::decode(&message.signed_request_status.unwrap())?;
+        let response = transport.read_state(canister_id.clone(), envelope).await?;
+        let request_id = RequestId::from_str(
+            &message
+                .request_id
+                .expect("Cannot get request_id from the update message."),
+        )?;
+        match lookup_read_state_response(response, request_id).map_err(|err| anyhow!("{}", err))? {
+            RequestStatusResponse::Replied { reply } => {
+                let ic_agent::agent::Replied::CallReplied(blob) = reply;
+                println!("{}", candid::IDLArgs::from_bytes(&blob)?);
+            }
+            RequestStatusResponse::Rejected {
+                reject_code,
+                reject_message,
+            } => {
+                return Err(NnsCliError::new(AgentError::ReplicaError {
+                    reject_code,
+                    reject_message,
+                }))
+            }
+            RequestStatusResponse::Unknown => (),
+            RequestStatusResponse::Received | RequestStatusResponse::Processing => {
+                eprintln!("The update call has been received and is processing.")
+            }
+            RequestStatusResponse::Done => {
+                return Err(NnsCliError::new(AgentError::RequestStatusDoneNoReply(
+                    String::from(request_id),
+                )))
+            }
+        }
+        return Ok(());
+    }
+
+    eprintln!("Will send message:");
+    eprintln!("  Creation:    {}", message.creation);
+    eprintln!("  Expiration:  {}", message.expiration);
+    eprintln!("  Network:     {}", message.network);
+    eprintln!("  Call type:   {}", message.call_type);
+    eprintln!("  Sender:      {}", message.sender);
+    eprintln!("  Canister id: {}", message.canister_id);
+    eprintln!("  Method name: {}", message.method_name);
+    eprintln!("  Arg:         {:?}", message.arg);
+
+    eprintln!("\nOkay? [y/N]");
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input)?;
+    if !["y", "yes"].contains(&input.to_lowercase().trim()) {
+        return Ok(());
+    }
+
+    match message.call_type.as_str() {
+        "query" => {
+            let response: QueryResponse =
+                serde_cbor::from_slice(&transport.query(canister_id, content).await?)
+                    .map_err(|err| anyhow!("{}", err))?;
+            match response {
+                QueryResponse::Replied { reply } => {
+                    println!("{}", candid::IDLArgs::from_bytes(&reply.arg)?);
+                }
+                QueryResponse::Rejected {
+                    reject_code,
+                    reject_message,
+                } => {
+                    eprintln!("{} {}", reject_code, reject_message);
+                }
+            };
+        }
+        "update" => {
+            let request_id = RequestId::from_str(
+                &message
+                    .request_id
+                    .expect("Cannot get request_id from the update message."),
+            )?;
+            transport
+                .call(canister_id.clone(), content, request_id)
+                .await?;
+
+            eprintln!(
+                "To check the status of this update call, append `--status` to current command."
+            );
+            eprintln!("e.g. `icx-nns send message.json --status`");
+            eprint!("Request ID: ");
+            println!("0x{}", String::from(request_id));
+            eprint!("Canister ID: ");
+            println!("{}", canister_id.to_string());
+        }
+        _ => unreachable!(),
+    }
+    Ok(())
+}
diff --git a/src/lib/agent/mod.rs b/src/lib/agent/mod.rs
new file mode 100644
index 0000000..b5d97fe
--- /dev/null
+++ b/src/lib/agent/mod.rs
@@ -0,0 +1,27 @@
+use crate::lib::error::NnsCliResult;
+
+use anyhow::anyhow;
+use garcon::Delay;
+use ic_agent::{Agent, Identity};
+
+pub fn create_waiter() -> Delay {
+    Delay::builder()
+        .throttle(std::time::Duration::from_secs(1))
+        .build()
+}
+
+pub async fn construct_agent(
+    identity: Box<dyn Identity + Send + Sync>,
+    endpoint: String,
+    fetch_root_key: bool,
+) -> NnsCliResult<Agent> {
+    let agent = Agent::builder()
+        .with_url(endpoint)
+        .with_boxed_identity(identity)
+        .build()
+        .map_err(|err| anyhow!("{:?}", err.to_string()))?;
+    if fetch_root_key {
+        let _ = agent.fetch_root_key().await?;
+    }
+    Ok(agent)
+}
diff --git a/src/lib/env/mod.rs b/src/lib/env/mod.rs
new file mode 100644
index 0000000..7730394
--- /dev/null
+++ b/src/lib/env/mod.rs
@@ -0,0 +1,7 @@
+use ic_agent::Agent;
+use ic_types::Principal;
+
+pub struct Env {
+    pub agent: Agent,
+    pub sender: Principal,
+}
diff --git a/src/lib/error/mod.rs b/src/lib/error/mod.rs
new file mode 100644
index 0000000..2068e88
--- /dev/null
+++ b/src/lib/error/mod.rs
@@ -0,0 +1,5 @@
+// The type to represent NNS CLI results.
+pub type NnsCliResult<T = ()> = anyhow::Result<T>;
+
+// The type to represent NNS CLI errors.
+pub type NnsCliError = anyhow::Error;
diff --git a/src/lib/identity/mod.rs b/src/lib/identity/mod.rs
new file mode 100644
index 0000000..8104af2
--- /dev/null
+++ b/src/lib/identity/mod.rs
@@ -0,0 +1,56 @@
+use crate::lib::error::NnsCliResult;
+
+use anyhow::anyhow;
+use ic_agent::identity::BasicIdentity;
+use ic_agent::Identity;
+use ic_identity_hsm::HardwareIdentity;
+
+const HSM_PKCS11_LIBRARY_PATH: &str = "HSM_PKCS11_LIBRARY_PATH";
+const PEM_PATH: &str = "PEM_PATH";
+const HSM_SLOT_INDEX: &str = "HSM_SLOT_INDEX";
+const HSM_KEY_ID: &str = "HSM_KEY_ID";
+const HSM_PIN: &str = "HSM_PIN";
+
+fn expect_env_var(name: &str) -> Result<String, String> {
+    std::env::var(name).map_err(|_| format!("Need to specify the {} environment variable", name))
+}
+
+fn get_hsm_pin() -> Result<String, String> {
+    expect_env_var(HSM_PIN)
+}
+
+fn create_basic_identity() -> NnsCliResult<Box<dyn Identity + Send + Sync>> {
+    let id = match std::env::var(PEM_PATH) {
+        Ok(_) => {
+            let path = expect_env_var(PEM_PATH).map_err(|err| anyhow!("{}", err))?;
+            BasicIdentity::from_pem_file(path).expect("Could not read the pem file.")
+        }
+        Err(_) => return Err(anyhow!("PEM_PATH environment variable is not set.")),
+    };
+    Ok(Box::new(id))
+}
+
+fn create_hsm_identity() -> NnsCliResult<Box<dyn Identity + Send + Sync>> {
+    if std::env::var(HSM_PKCS11_LIBRARY_PATH).is_err() {
+        return Err(anyhow!(
+            "HSM_PKCS11_LIBRARY_PATH environment variable is not set."
+        ));
+    }
+    let path = expect_env_var(HSM_PKCS11_LIBRARY_PATH).map_err(|err| anyhow!("{}", err))?;
+    let slot_index = expect_env_var(HSM_SLOT_INDEX)
+        .map_err(|err| anyhow!("{}", err))?
+        .parse::<usize>()
+        .map_err(|e| anyhow!("Unable to parse {} value: {}", HSM_SLOT_INDEX, e))?;
+    let key = expect_env_var(HSM_KEY_ID).map_err(|err| anyhow!("{}", err))?;
+    let id = HardwareIdentity::new(path, slot_index, &key, get_hsm_pin)
+        .map_err(|e| anyhow!("Unable to create hw identity: {}", e))?;
+    Ok(Box::new(id))
+}
+
+pub fn create_identity(use_hsm: bool) -> NnsCliResult<Box<dyn Identity + Send + Sync>> {
+    if use_hsm {
+        create_hsm_identity()
+    } else {
+        create_basic_identity()
+    }
+}
diff --git a/src/lib/mod.rs b/src/lib/mod.rs
new file mode 100644
index 0000000..7cfdee4
--- /dev/null
+++ b/src/lib/mod.rs
@@ -0,0 +1,6 @@
+pub mod agent;
+pub mod env;
+pub mod error;
+pub mod identity;
+pub mod nns_types;
+pub mod segregated_sign_send;
diff --git a/src/lib/nns_types/governance/mod.rs b/src/lib/nns_types/governance/mod.rs
new file mode 100644
index 0000000..49ca8b6
--- /dev/null
+++ b/src/lib/nns_types/governance/mod.rs
@@ -0,0 +1,61 @@
+use ic_types::Principal;
+use num_derive::ToPrimitive;
+use strum_macros::{AsRefStr, EnumString};
+
+#[derive(AsRefStr, Debug, EnumString, ToPrimitive)]
+#[strum(serialize_all = "snake_case")]
+pub enum ProposalRewardStatus {
+    Unspecified = 0,
+    /// The proposal still accept votes, for the purpose of
+    /// vote rewards. This implies nothing on the ProposalStatus.
+    AcceptVotes = 1,
+    /// The proposal no longer accepts votes. It is due to settle
+    /// at the next reward event.
+    ReadyToSettle = 2,
+    /// The proposal has been taken into account in a reward event.
+    Settled = 3,
+    /// The proposal is not eligible to be taken into account in a reward event.
+    Ineligible = 4,
+}
+
+#[derive(AsRefStr, Debug, EnumString, ToPrimitive)]
+#[strum(serialize_all = "snake_case")]
+pub enum ProposalStatus {
+    Unspecified = 0,
+    /// A decision (adopt/reject) has yet to be made.
+    Open = 1,
+    /// The proposal has been rejected.
+    Rejected = 2,
+    /// The proposal has been adopted (sometimes also called
+    /// "accepted"). At this time, either execution as not yet started,
+    /// or it has but the outcome is not yet known.
+    Adopted = 3,
+    /// The proposal was adopted and successfully executed.
+    Executed = 4,
+    /// The proposal was adopted, but execution failed.
+    Failed = 5,
+}
+
+#[derive(AsRefStr, Debug, EnumString, ToPrimitive)]
+#[strum(serialize_all = "snake_case")]
+pub enum Topic {
+    Unspecified = 0,
+    NeuronManagement = 1,
+    ExchangeRate = 2,
+    NetworkEconomics = 3,
+    Governance = 4,
+    NodeAdmin = 5,
+    ParticipantManagement = 6,
+    SubnetManagement = 7,
+    NetworkCanisterManagement = 8,
+    Kyc = 9,
+    NodeProviderRewards = 10,
+}
+
+pub fn ledger_canister_id() -> Principal {
+    Principal::from_slice(ic_nns_constants::LEDGER_CANISTER_ID.as_ref())
+}
+
+pub fn governance_canister_id() -> Principal {
+    Principal::from_slice(ic_nns_constants::GOVERNANCE_CANISTER_ID.as_ref())
+}
diff --git a/src/lib/nns_types/mod.rs b/src/lib/nns_types/mod.rs
new file mode 100644
index 0000000..71d6cc9
--- /dev/null
+++ b/src/lib/nns_types/mod.rs
@@ -0,0 +1,2 @@
+pub mod governance;
+pub mod utils;
diff --git a/src/lib/nns_types/utils/mod.rs b/src/lib/nns_types/utils/mod.rs
new file mode 100644
index 0000000..6a5d701
--- /dev/null
+++ b/src/lib/nns_types/utils/mod.rs
@@ -0,0 +1,80 @@
+use crate::lib::error::NnsCliResult;
+
+use anyhow::anyhow;
+use ic_base_types::PrincipalId;
+use ledger_canister::{ICPTs, Memo, Subaccount, DECIMAL_PLACES};
+use openssl::sha::Sha256;
+use rust_decimal::Decimal;
+use std::convert::TryFrom;
+use std::str::FromStr;
+
+pub fn icpts_amount_validator(icpts: &str) -> Result<(), String> {
+    let err_message = format!("Could not convert {} to ICP type", icpts);
+    icpts_from_str(icpts).map(|_| ()).map_err(|_| err_message)
+}
+
+pub fn get_governance_subaccount(memo: Memo, principal: PrincipalId) -> Subaccount {
+    Subaccount::try_from(
+        &{
+            let mut state = Sha256::new();
+            state.update(&[0x0c]);
+            state.update(b"neuron-stake");
+            state.update(&principal.as_slice());
+            state.update(&memo.0.to_be_bytes());
+            state.finish()
+        }[..],
+    )
+    .expect("Couldn't build subaccount from hash.")
+}
+
+pub fn icpts_from_str(s: &str) -> NnsCliResult<ICPTs> {
+    match Decimal::from_str(s) {
+        Ok(amount) => {
+            if amount.scale() > DECIMAL_PLACES {
+                return Err(anyhow!(
+                    "e8s can only be specified to the 8th decimal.".to_string()
+                ));
+            }
+            let icpts = match amount.trunc().to_string().parse::<u64>() {
+                Ok(v) => v,
+                Err(e) => return Err(anyhow!(format!("{}", e))),
+            };
+            let e8s = match amount.fract().to_string().as_str() {
+                "0" => 0_u64,
+                e8s => {
+                    let e8s = &e8s.to_string()[2..e8s.to_string().len()];
+                    let amount = e8s.chars().enumerate().fold(0, |amount, (idx, val)| {
+                        amount
+                            + (10_u64.pow(DECIMAL_PLACES - 1 - (idx as u32))
+                                * (val.to_digit(10).unwrap() as u64))
+                    });
+                    amount as u64
+                }
+            };
+            ICPTs::new(icpts, e8s).map_err(|err| anyhow!(err))
+        }
+        Err(e) => Err(anyhow!(format!("Decimal conversion error: {}", e))),
+    }
+}
+
+pub fn get_icpts_from_args(
+    amount: Option<String>,
+    icp: Option<u64>,
+    e8s: Option<u64>,
+) -> NnsCliResult<ICPTs> {
+    if amount.is_none() {
+        let icp = match icp {
+            Some(v) => ICPTs::from_icpts(v).map_err(|err| anyhow!(err))?,
+            None => ICPTs::from_e8s(0),
+        };
+        let icp_from_e8s = match e8s {
+            Some(v) => ICPTs::from_e8s(v),
+            None => ICPTs::from_e8s(0),
+        };
+        let amount = icp + icp_from_e8s;
+        Ok(amount.map_err(|err| anyhow!(err))?)
+    } else {
+        Ok(icpts_from_str(&amount.unwrap())
+            .map_err(|err| anyhow!("Could not add ICPs and e8s: {}", err))?)
+    }
+}
diff --git a/src/lib/segregated_sign_send/mod.rs b/src/lib/segregated_sign_send/mod.rs
new file mode 100644
index 0000000..de4ddbc
--- /dev/null
+++ b/src/lib/segregated_sign_send/mod.rs
@@ -0,0 +1,3 @@
+pub mod sign;
+pub mod sign_transport;
+pub mod signed_message;
diff --git a/src/lib/segregated_sign_send/sign.rs b/src/lib/segregated_sign_send/sign.rs
new file mode 100644
index 0000000..8f62c85
--- /dev/null
+++ b/src/lib/segregated_sign_send/sign.rs
@@ -0,0 +1,121 @@
+use crate::lib::error::NnsCliResult;
+use crate::lib::segregated_sign_send::sign_transport::SignReplicaV2Transport;
+use crate::lib::segregated_sign_send::signed_message::SignedMessageV1;
+
+use anyhow::{anyhow, bail};
+use chrono::Utc;
+use humanize_rs::duration;
+use ic_agent::RequestId;
+use ic_agent::{Agent, AgentError};
+use ic_types::Principal;
+use std::fs::File;
+use std::io::Read;
+use std::path::Path;
+use std::str::FromStr;
+use std::time::SystemTime;
+
+pub struct CanisterPayload {
+    pub canister_id: Principal,
+    pub method_name: String,
+    pub is_query: bool,
+    pub arg: Vec<u8>,
+}
+
+pub struct SignPayload {
+    pub payload: Option<CanisterPayload>,
+    pub network: String,
+    pub expire_after: String,
+    pub file: String,
+}
+
+pub async fn sign_message(opts: SignPayload, agent: Agent, sender: Principal) -> NnsCliResult {
+    let payload = opts.payload.unwrap();
+    let timeout = duration::parse(&opts.expire_after)
+        .map_err(|_| anyhow!("Cannot parse expire_after as a duration (e.g. `1h`, `1h 30m`)"))?;
+    let expiration_system_time = SystemTime::now()
+        .checked_add(timeout)
+        .ok_or_else(|| anyhow!("Time wrapped around."))?;
+    let chorono_timeout = chrono::Duration::seconds(timeout.as_secs() as i64);
+    let creation = Utc::now();
+    let expiration = creation
+        .checked_add_signed(chorono_timeout)
+        .ok_or_else(|| anyhow!("Expiration datetime overflow."))?;
+
+    let message_template = SignedMessageV1::new(
+        creation,
+        expiration,
+        opts.network,
+        sender,
+        payload.canister_id.clone(),
+        payload.method_name.to_string(),
+        payload.arg.clone(),
+    );
+
+    let file_name = opts.file;
+    if Path::new(&file_name).exists() {
+        bail!(
+            "[{}] already exists, please specify a different output file name.",
+            file_name
+        );
+    }
+
+    let mut sign_agent = agent.clone();
+    sign_agent.set_transport(SignReplicaV2Transport::new(
+        file_name.clone(),
+        message_template,
+    ));
+
+    if payload.is_query {
+        let res = sign_agent
+            .query(&payload.canister_id, payload.method_name)
+            .with_effective_canister_id(payload.canister_id)
+            .with_arg(&payload.arg)
+            .expire_at(expiration_system_time)
+            .call()
+            .await;
+        match res {
+            Err(AgentError::TransportError(b)) => {
+                println!("{}", b);
+                Ok(())
+            }
+            Err(e) => bail!(e),
+            Ok(_) => unreachable!(),
+        }
+    } else {
+        let res = sign_agent
+            .update(&payload.canister_id, payload.method_name)
+            .with_effective_canister_id(payload.canister_id.clone())
+            .with_arg(&payload.arg)
+            .expire_at(expiration_system_time)
+            .call()
+            .await;
+        match res {
+            Err(AgentError::TransportError(b)) => {
+                println!("{}", b);
+                //Ok(())
+            }
+            Err(e) => bail!(e),
+            Ok(_) => unreachable!(),
+        }
+        let path = Path::new(&file_name);
+        let mut file = File::open(&path).map_err(|_| anyhow!("Message file doesn't exist."))?;
+        let mut json = String::new();
+        file.read_to_string(&mut json)
+            .map_err(|_| anyhow!("Cannot read the message file."))?;
+        let message: SignedMessageV1 =
+            serde_json::from_str(&json).map_err(|_| anyhow!("Invalid json message."))?;
+        // message from file guaranteed to have request_id becase it is a update message just generated
+        let request_id = RequestId::from_str(&message.request_id.unwrap())?;
+        let res = sign_agent
+            .request_status_raw(&request_id, payload.canister_id.clone())
+            .await;
+        match res {
+            Err(AgentError::TransportError(b)) => {
+                println!("{}", b);
+                Ok(())
+            }
+            Err(e) => bail!(e),
+            Ok(_) => unreachable!(),
+        }
+    }
+}
diff --git a/src/lib/segregated_sign_send/sign_transport.rs b/src/lib/segregated_sign_send/sign_transport.rs
new file mode 100644
index 0000000..ce0acfa
--- /dev/null
+++ b/src/lib/segregated_sign_send/sign_transport.rs
@@ -0,0 +1,142 @@
+use super::signed_message::SignedMessageV1;
+
+use ic_agent::agent::ReplicaV2Transport;
+use ic_agent::{AgentError, RequestId};
+use ic_types::Principal;
+
+use std::fs::{File, OpenOptions};
+use std::future::Future;
+use std::io::{Read, Write};
+use std::path::Path;
+use std::pin::Pin;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+enum SerializeStatus {
+    #[error("{0}")]
+    Success(String),
+}
+
+pub(crate) struct SignReplicaV2Transport {
+    file_name: String,
+    message_template: SignedMessageV1,
+}
+
+impl SignReplicaV2Transport {
+    pub fn new<U: Into<String>>(file_name: U, message_template: SignedMessageV1) -> Self {
+        Self {
+            file_name: file_name.into(),
+            message_template,
+        }
+    }
+}
+
+impl ReplicaV2Transport for SignReplicaV2Transport {
+    fn read_state<'a>(
+        &'a self,
+        _effective_canister_id: Principal,
+        envelope: Vec<u8>,
+    ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, AgentError>> + Send + 'a>> {
+        async fn run(s: &SignReplicaV2Transport, envelope: Vec<u8>) -> Result<Vec<u8>, AgentError> {
+            let path = Path::new(&s.file_name);
+            let mut file =
+                File::open(&path).map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let mut json = String::new();
+            file.read_to_string(&mut json)
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let message: SignedMessageV1 =
+                serde_json::from_str(&json).map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let message = message.with_signed_request_status(hex::encode(&envelope));
+            let json = serde_json::to_string(&message)
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let mut file = OpenOptions::new()
+                .write(true)
+                .truncate(true)
+                .open(&path)
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            file.write_all(json.as_bytes())
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            Err(AgentError::TransportError(
+                SerializeStatus::Success(format!(
+                    "Signed request_status append to update message in [{}]",
+                    &s.file_name
+                ))
+                .into(),
+            ))
+        }
+
+        Box::pin(run(self, envelope))
+    }
+
+    fn call<'a>(
+        &'a self,
+        _effective_canister_id: Principal,
+        envelope: Vec<u8>,
+        request_id: RequestId,
+    ) -> Pin<Box<dyn Future<Output = Result<(), AgentError>> + Send + 'a>> {
+        async fn run(
+            s: &SignReplicaV2Transport,
+            envelope: Vec<u8>,
+            request_id: RequestId,
+        ) -> Result<(), AgentError> {
+            let message = s
+                .message_template
+                .clone()
+                .with_call_type("update".to_string())
+                .with_request_id(request_id)
+                .with_content(hex::encode(&envelope));
+            let json = serde_json::to_string(&message)
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let path = Path::new(&s.file_name);
+            let mut file =
+                File::create(&path).map_err(|x| AgentError::MessageError(x.to_string()))?;
+            file.write_all(json.as_bytes())
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            Err(AgentError::TransportError(
+                SerializeStatus::Success(format!("Update message generated at [{}]", &s.file_name))
+                    .into(),
+            ))
+        }
+
+        Box::pin(run(self, envelope, request_id))
+    }
+
+    fn query<'a>(
+        &'a self,
+        _effective_canister_id: Principal,
+        envelope: Vec<u8>,
+    ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, AgentError>> + Send + 'a>> {
+        async fn run(s: &SignReplicaV2Transport, envelope: Vec<u8>) -> Result<Vec<u8>, AgentError> {
+            let message = s
+                .message_template
+                .clone()
+                .with_call_type("query".to_string())
+                .with_content(hex::encode(&envelope));
+            let json = serde_json::to_string(&message)
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            let path = Path::new(&s.file_name);
+            let mut file =
+                File::create(&path).map_err(|x| AgentError::MessageError(x.to_string()))?;
+            file.write_all(json.as_bytes())
+                .map_err(|x| AgentError::MessageError(x.to_string()))?;
+            Err(AgentError::TransportError(
+                SerializeStatus::Success(format!("Query message generated at [{}]", &s.file_name))
+                    .into(),
+            ))
+        }
+
+        Box::pin(run(self, envelope))
+    }
+
+    fn status<'a>(
+        &'a self,
+    ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, AgentError>> + Send + 'a>> {
+        async fn run(_: &SignReplicaV2Transport) -> Result<Vec<u8>, AgentError> {
+            Err(AgentError::MessageError(
+                "status calls not supported".to_string(),
+            ))
+        }
+
+        Box::pin(run(self))
+    }
+}
diff --git a/src/lib/segregated_sign_send/signed_message.rs b/src/lib/segregated_sign_send/signed_message.rs
new file mode 100644
index 0000000..6217aaa
--- /dev/null
+++ b/src/lib/segregated_sign_send/signed_message.rs
@@ -0,0 +1,206 @@
+use crate::lib::error::NnsCliResult;
+
+use ic_agent::RequestId;
+use ic_types::principal::Principal;
+
+use anyhow::{anyhow, bail};
+use chrono::{DateTime, TimeZone, Utc};
+use serde::{Deserialize, Serialize};
+use serde_cbor::Value;
+use std::convert::TryFrom;
+use std::time::Duration;
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub(crate) struct SignedMessageV1 {
+    version: usize,
+    #[serde(with = "date_time_utc")]
+    pub creation: DateTime<Utc>,
+    #[serde(with = "date_time_utc")]
+    pub expiration: DateTime<Utc>,
+    pub network: String, // url of the network
+    pub call_type: String,
+    pub sender: String,
+    pub canister_id: String,
+    pub method_name: String,
+    pub arg: Vec<u8>,
+    pub request_id: Option<String>, // only useful for update call
+    pub content: String,            // hex::encode the Vec<u8>
+    pub signed_request_status: Option<String>, // hex::encode the Vec<u8>, only accompany update call
+}
+
+impl SignedMessageV1 {
+    pub fn new(
+        creation: DateTime<Utc>,
+        expiration: DateTime<Utc>,
+        network: String,
+        sender: Principal,
+        canister_id: Principal,
+        method_name: String,
+        arg: Vec<u8>,
+    ) -> Self {
+        Self {
+            version: 1,
+            creation,
+            expiration,
+            network,
+            call_type: String::new(),
+            sender: sender.to_string(),
+            canister_id: canister_id.to_string(),
+            method_name,
+            arg,
+            request_id: None,
+            content: String::new(),
+            signed_request_status: None,
+        }
+    }
+
+    pub fn with_call_type(mut self, request_type: String) -> Self {
+        self.call_type = request_type;
+        self
+    }
+
+    pub fn with_request_id(mut self, request_id: RequestId) -> Self {
+        self.request_id = Some(String::from(request_id));
+        self
+    }
+
+    pub fn with_content(mut self, content: String) -> Self {
+        self.content = content;
+        self
+    }
+
+    pub fn with_signed_request_status(mut self, signed_request_status: String) -> Self {
+        self.signed_request_status = Some(signed_request_status);
+        self
+    }
+
+    pub fn validate(&self) -> NnsCliResult {
+        if self.version != 1 {
+            bail!("Invalid message: version must be 1");
+        }
+
+        if !["query", "update"].contains(&self.call_type.as_str()) {
+            bail!("Invalid message: call_type must be `query` or `update`");
+        }
+
+        let content = hex::decode(&self.content)?;
+
+        let cbor: Value = serde_cbor::from_slice(&content)
+            .map_err(|_| anyhow!("Invalid cbor data in the content of the message."))?;
+
+        if let Value::Map(m) = cbor {
+            let cbor_content = m
+                .get(&Value::Text("content".to_string()))
+                .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+            if let Value::Map(m) = cbor_content {
+                let ingress_expiry = m
+                    .get(&Value::Text("ingress_expiry".to_string()))
+                    .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+                if let Value::Integer(s) = ingress_expiry {
+                    let seconds_since_epoch_cbor = Duration::from_nanos(*s as u64).as_secs();
+                    let expiration_from_cbor = Utc.timestamp(seconds_since_epoch_cbor as i64, 0);
+                    let diff = self.expiration.signed_duration_since(expiration_from_cbor);
+                    if diff > chrono::Duration::seconds(5) || diff < chrono::Duration::seconds(-5) {
+                        bail!(
+                            "Invalid message: expiration not match\njson: {}\ncbor: {}",
+                            self.expiration,
+                            expiration_from_cbor
+                        )
+                    }
+                    if Utc::now() > expiration_from_cbor {
+                        bail!("The message has been expired at: {}", expiration_from_cbor);
+                    }
+                }
+                let sender = m
+                    .get(&Value::Text("sender".to_string()))
+                    .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+                if let Value::Bytes(s) = sender {
+                    let sender_from_cbor =
+                        Principal::try_from(s).map_err(|_| anyhow!("Invalid cbor content."))?;
+                    let sender_from_json = Principal::from_text(&self.sender)
+                        .map_err(|_| anyhow!("Invalid json: sender."))?;
+                    if !sender_from_cbor.eq(&sender_from_json) {
+                        bail!(
+                            "Invalid message: sender principle not match\njson: {}\ncbor: {}",
+                            sender_from_json,
+                            sender_from_cbor
+                        )
+                    }
+                }
+
+                let canister_id = m
+                    .get(&Value::Text("canister_id".to_string()))
+                    .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+                if let Value::Bytes(s) = canister_id {
+                    let canister_id_from_cbor =
+                        Principal::try_from(s).map_err(|_| anyhow!("Invalid cbor content."))?;
+                    let canister_id_from_json = Principal::from_text(&self.canister_id)
+                        .map_err(|_| anyhow!("Invalid json: canister_id."))?;
+                    if !canister_id_from_cbor.eq(&canister_id_from_json) {
+                        bail!(
+                            "Invalid message: canister_id not match\njson: {}\ncbor: {}",
+                            canister_id_from_json,
+                            canister_id_from_cbor
+                        )
+                    }
+                }
+
+                let method_name = m
+                    .get(&Value::Text("method_name".to_string()))
+                    .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+                if let Value::Text(s) = method_name {
+                    if !s.eq(&self.method_name) {
+                        bail!(
+                            "Invalid message: method_name not match\njson: {}\ncbor: {}",
+                            self.method_name,
+                            s
+                        )
+                    }
+                }
+
+                let arg = m
+                    .get(&Value::Text("arg".to_string()))
+                    .ok_or_else(|| anyhow!("Invalid cbor content"))?;
+                if let Value::Bytes(s) = arg {
+                    if !s.eq(&self.arg) {
+                        bail!(
+                            "Invalid message: arg not match\njson: {:?}\ncbor: {:?}",
+                            self.arg,
+                            s
+                        )
+                    }
+                }
+            } else {
+                bail!("Invalid cbor content");
+            }
+        } else {
+            bail!("Invalid cbor content");
+        }
+        Ok(())
+    }
+}
+
+mod date_time_utc {
+    // https://serde.rs/custom-date-format.html
+    use chrono::{DateTime, TimeZone, Utc};
+    use serde::{self, Deserialize, Deserializer, Serializer};
+
+    const FORMAT: &str = "%Y-%m-%d %H:%M:%S UTC";
+
+    pub fn serialize<S>(date: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let s = format!("{}", date.format(FORMAT));
+        serializer.serialize_str(&s)
+    }
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        Utc.datetime_from_str(&s, FORMAT)
+            .map_err(serde::de::Error::custom)
+    }
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..f3eea96
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,87 @@
+use crate::lib::agent::construct_agent;
+use crate::lib::env::Env;
+use crate::lib::identity::create_identity;
+use crate::lib::segregated_sign_send::sign::SignPayload;
+use clap::{AppSettings, Clap};
+
+use anyhow::anyhow;
+use tokio::runtime::Runtime;
+
+mod commands;
+mod lib;
+
+const IC_ENDPOINT: &str = "https://ic0.app";
+
+/// A tool to interact with IC NNS.
+#[derive(Clap)]
+#[clap(name("icx-nns"), global_setting = AppSettings::ColoredHelp)]
+pub struct Opts {
+    #[clap(subcommand)]
+    command: commands::Command,
+
+    /// An IP address and port to connect to "<address>:<port>"
+    #[clap(long)]
+    endpoint: Option<String>,
+
+    /// A flag to control whether or not to use the HSM backed identity
+    #[clap(long)]
+    use_hsm: bool,
+
+    /// Sign the message locally and save content to filename as specified
+    /// with the `--flag` option. This file can be sent with `icx-nns send <file>`
+    #[clap(long)]
+    sign: bool,
+
+    /// Specify the output file name. Extension type should be `.json`
+    /// Default filename: message.json
+    #[clap(long, requires("sign"))]
+    file: Option<String>,
+
+    /// Specifies how long will the message be valid in seconds
+    /// Default expiry timeout: 5 minutes
+    #[clap(long, requires("sign"))]
+    expire_after: Option<String>,
+}
+
+fn main() {
+    let opts = Opts::parse();
+    let command = opts.command;
+    let (network, fetch_root_key) = opts
+        .endpoint
+        .clone()
+        .map_or((IC_ENDPOINT.to_string(), false), |v| {
+            (format!("http://{}", v), true)
+        });
+    let use_hsm = opts.use_hsm;
+    let sign = opts.sign;
+    let file = opts.file.unwrap_or_else(|| "message.json".to_string());
+    let expire_after = opts.expire_after.unwrap_or_else(|| "5m".to_string());
+
+    let runtime = Runtime::new().expect("Unable to create a runtime");
+
+    let result = runtime.block_on(async {
+        let identity = create_identity(use_hsm)?;
+        let sender = identity.sender().map_err(|err| anyhow!("{}", err))?;
+
+        let agent = construct_agent(identity, network.clone(), fetch_root_key).await?;
+
+        let env = Env { agent, sender };
+
+        let maybe_sign_payload = if sign {
+            Some(SignPayload {
+                payload: None,
+                network,
+                expire_after,
+                file,
+            })
+        } else {
+            None
+        };
+        commands::exec(command, maybe_sign_payload, env).await
+    });
+
+    if let Err(err) = result {
+        eprintln!("{}", err);
+        std::process::exit(255);
+    }
+}