lib.rs

//! The Substrate Node Template runtime. This can be compiled with `#[no_std]`, ready for Wasm.

#![cfg_attr(not(feature = "std"), no_std)]
// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
#![recursion_limit="256"]

// Make the WASM binary available.
#[cfg(feature = "std")]
include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

use sp_std::prelude::*;
use sp_core::{crypto::KeyTypeId, OpaqueMetadata, u32_trait::{_1, _2, _3, _4}};
use sp_runtime::{
	ApplyExtrinsicResult, generic, create_runtime_str, impl_opaque_keys, MultiSignature,
	transaction_validity::{TransactionValidity, TransactionSource, TransactionPriority},
};
use sp_runtime::traits::{
	self, BlakeTwo256, Block as BlockT, OpaqueKeys, IdentityLookup, SaturatedConversion,
	Verify, IdentifyAccount, NumberFor, Saturating, Convert, StaticLookup,
};
use sp_api::impl_runtime_apis;
use grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
use grandpa::fg_primitives;
use sp_version::RuntimeVersion;
#[cfg(feature = "std")]
use sp_version::NativeVersion;
use sp_runtime::curve::PiecewiseLinear;
use session::{historical as session_historical};
use im_online::sr25519::AuthorityId as ImOnlineId;
use system::{EnsureRoot, EnsureOneOf};
use codec::Encode;
use static_assertions::const_assert;
use currency::{DOLLARS, CENTS};

// A few exports that help ease life for downstream crates.
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;
pub use timestamp::Call as TimestampCall;
pub use balances::Call as BalancesCall;
pub use sp_runtime::{
	Permill, Perbill, Perquintill, Percent, ModuleId, FixedPointNumber,
};
pub use frame_support::{
	construct_runtime, parameter_types, StorageValue,
	traits::{
		KeyOwnerProofSystem, Randomness, LockIdentifier, OnUnbalanced, Currency,
		Imbalance, Filter,
	},
	weights::{
		Weight, IdentityFee,
		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
	},
	debug,
};
pub use staking::StakerStatus;
pub use transaction_payment::{Multiplier, TargetedFeeAdjustment};

/// Importing a template pallet
pub use template;

/// An index to a block.
pub type BlockNumber = u32;

/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
pub type Signature = MultiSignature;

/// Some way of identifying an account on the chain. We intentionally make it equivalent
/// to the public key of our transaction signing scheme.
pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;

/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
/// never know...
pub type AccountIndex = u32;

/// Balance of an account.
pub type Balance = u128;

/// Index of a transaction in the chain.
pub type Index = u32;

/// A hash of some data used by the chain.
pub type Hash = sp_core::H256;

/// Digest item type.
pub type DigestItem = generic::DigestItem<Hash>;

/// Money matters.
pub mod currency {
	use super::Balance;
	
	pub const MILLICENTS: Balance = 1_000_000_000;
	pub const CENTS: Balance = 1_000 * MILLICENTS;    // assume this is worth about a cent.
	pub const DOLLARS: Balance = 100 * CENTS;
}

/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
/// the specifics of the runtime. They can then be made to be agnostic over specific formats
/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
/// to even the core data structures.
pub mod opaque {
	use super::*;

	pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;

	/// Opaque block header type.
	pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
	/// Opaque block type.
	pub type Block = generic::Block<Header, UncheckedExtrinsic>;
	/// Opaque block identifier type.
	pub type BlockId = generic::BlockId<Block>;

	impl_opaque_keys! {
		pub struct SessionKeys {
			pub babe: Babe,
			pub grandpa: Grandpa,
			pub im_online: ImOnline,
		}
	}
}

/// App-specific crypto used for reporting equivocation/misbehavior in BABE and
/// GRANDPA. Any rewards for misbehavior reporting will be paid out to this
/// account.
pub mod report {
	use super::{Signature, Verify};
	use system::offchain::AppCrypto;
	use sp_core::crypto::{key_types, KeyTypeId};

	/// Key type for the reporting module. Used for reporting BABE and GRANDPA
	/// equivocations.
	pub const KEY_TYPE: KeyTypeId = key_types::REPORTING;

	mod app {
		use sp_application_crypto::{app_crypto, sr25519};
		app_crypto!(sr25519, super::KEY_TYPE);
	}

	/// Identity of the equivocation/misbehavior reporter.
	pub type ReporterId = app::Public;

	/// An `AppCrypto` type to allow submitting signed transactions using the reporting
	/// application key as signer.
	pub struct ReporterAppCrypto;

	impl AppCrypto<<Signature as Verify>::Signer, Signature> for ReporterAppCrypto {
		type RuntimeAppPublic = ReporterId;
		type GenericSignature = sp_core::sr25519::Signature;
		type GenericPublic = sp_core::sr25519::Public;
	}
}

/// This runtime version.
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("node-template"),
	impl_name: create_runtime_str!("node-template"),
	authoring_version: 1,
	spec_version: 7,
	impl_version: 1,
	apis: RUNTIME_API_VERSIONS,
	transaction_version: 1,
};

pub const MILLISECS_PER_BLOCK: u64 = 6000;

pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;

// These time units are defined in number of blocks.
pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
pub const HOURS: BlockNumber = MINUTES * 60;
pub const DAYS: BlockNumber = HOURS * 24;

pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 10 * MINUTES;
pub const EPOCH_DURATION_IN_SLOTS: u64 = {
	const SLOT_FILL_RATE: f64 = MILLISECS_PER_BLOCK as f64 / SLOT_DURATION as f64;

	(EPOCH_DURATION_IN_BLOCKS as f64 * SLOT_FILL_RATE) as u64
};

// 1 in 4 blocks (on average, not counting collisions) will be primary BABE blocks.
pub const PRIMARY_PROBABILITY: (u64, u64) = (1, 4);

/// Struct that handles the conversion of Balance -> `u64`. This is used for staking's election
/// calculation.
pub struct CurrencyToVoteHandler;

impl CurrencyToVoteHandler {
	fn factor() -> Balance { (Balances::total_issuance() / u64::max_value() as Balance).max(1) }
}

impl Convert<Balance, u64> for CurrencyToVoteHandler {
	fn convert(x: Balance) -> u64 { (x / Self::factor()) as u64 }
}

impl Convert<u128, Balance> for CurrencyToVoteHandler {
	fn convert(x: u128) -> Balance { x * Self::factor() }
}

type NegativeImbalance = <Balances as Currency<AccountId>>::NegativeImbalance;

pub struct Author;
impl OnUnbalanced<NegativeImbalance> for Author {
	fn on_nonzero_unbalanced(amount: NegativeImbalance) {
		Balances::resolve_creating(&Authorship::author(), amount);
	}
}

pub struct DealWithFees;
impl OnUnbalanced<NegativeImbalance> for DealWithFees {
	fn on_unbalanceds<B>(mut fees_then_tips: impl Iterator<Item=NegativeImbalance>) {
		if let Some(fees) = fees_then_tips.next() {
			// for fees, 80% to treasury, 20% to author
			let mut split = fees.ration(80, 20);
			if let Some(tips) = fees_then_tips.next() {
				// for tips, if any, 80% to treasury, 20% to author (though this can be anything)
				tips.ration_merge_into(80, 20, &mut split);
			}
			Treasury::on_unbalanced(split.0);
			Author::on_unbalanced(split.1);
		}
	}
}

pub struct BaseFilter;
impl Filter<Call> for BaseFilter {
	fn filter(call: &Call) -> bool {
		/// Avoid processing transactions from template module.
		!matches!(call, Call::TemplateModule(_))
	}
}

/// The version information used to identify this runtime when compiled natively.
#[cfg(feature = "std")]
pub fn native_version() -> NativeVersion {
	NativeVersion {
		runtime_version: VERSION,
		can_author_with: Default::default(),
	}
}

parameter_types! {
	pub const BlockHashCount: BlockNumber = 2400;
	/// We allow for 2 seconds of compute with a 6 second average block time.
	pub const MaximumBlockWeight: Weight = 2 * WEIGHT_PER_SECOND;
	pub const AvailableBlockRatio: Perbill = Perbill::from_percent(75);
	/// Assume 10% of weight for average on_initialize calls.
	pub MaximumExtrinsicWeight: Weight = AvailableBlockRatio::get()
		.saturating_sub(Perbill::from_percent(10)) * MaximumBlockWeight::get();
	pub const MaximumBlockLength: u32 = 5 * 1024 * 1024;
	pub const Version: RuntimeVersion = VERSION;
}

impl system::Trait for Runtime {
	/// The basic call filter to use in Origin. All origins are built with this filter as base,
	/// except Root.
	type BaseCallFilter = BaseFilter;
	/// The identifier used to distinguish between accounts.
	type AccountId = AccountId;
	/// The aggregated dispatch type that is available for extrinsics.
	type Call = Call;
	/// The lookup mechanism to get account ID from whatever is passed in dispatchers.
	type Lookup = IdentityLookup<AccountId>;
	/// The index type for storing how many extrinsics an account has signed.
	type Index = Index;
	/// The index type for blocks.
	type BlockNumber = BlockNumber;
	/// The type for hashing blocks and tries.
	type Hash = Hash;
	/// The hashing algorithm used.
	type Hashing = BlakeTwo256;
	/// The header type.
	type Header = generic::Header<BlockNumber, BlakeTwo256>;
	/// The ubiquitous event type.
	type Event = Event;
	/// The ubiquitous origin type.
	type Origin = Origin;
	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
	type BlockHashCount = BlockHashCount;
	/// Maximum weight of each block.
	type MaximumBlockWeight = MaximumBlockWeight;
	/// The weight of database operations that the runtime can invoke.
	type DbWeight = RocksDbWeight;
	/// The weight of the overhead invoked on the block import process, independent of the
	/// extrinsics included in that block.
	type BlockExecutionWeight = BlockExecutionWeight;
	/// The base weight of any extrinsic processed by the runtime, independent of the
	/// logic of that extrinsic. (Signature verification, nonce increment, fee, etc...)
	type ExtrinsicBaseWeight = ExtrinsicBaseWeight;
	/// The maximum weight that a single extrinsic of `Normal` dispatch class can have,
	/// idependent of the logic of that extrinsics. (Roughly max block weight - average on
	/// initialize cost).
	type MaximumExtrinsicWeight = MaximumExtrinsicWeight;
	/// Maximum size of all encoded transactions (in bytes) that are allowed in one block.
	type MaximumBlockLength = MaximumBlockLength;
	/// Portion of the block weight that is available to all normal transactions.
	type AvailableBlockRatio = AvailableBlockRatio;
	/// Version of the runtime.
	type Version = Version;
	/// Converts a module to the index of the module in `construct_runtime!`.
	///
	/// This type is being generated by `construct_runtime!`.
	type ModuleToIndex = ModuleToIndex;
	/// What to do if a new account is created.
	type OnNewAccount = ();
	/// What to do if an account is fully reaped from the system.
	type OnKilledAccount = ();
	/// The data to be stored in an account.
	type AccountData = balances::AccountData<Balance>;
}

parameter_types! {
	pub const EpochDuration: u64 = EPOCH_DURATION_IN_SLOTS;
	pub const ExpectedBlockTime: u64 = MILLISECS_PER_BLOCK;
}

impl babe::Trait for Runtime {
	type EpochDuration = EpochDuration;
	type ExpectedBlockTime = ExpectedBlockTime;
	type EpochChangeTrigger = babe::ExternalTrigger;
}

impl<LocalCall> system::offchain::CreateSignedTransaction<LocalCall> for Runtime where
	Call: From<LocalCall>,
{
	fn create_transaction<C: system::offchain::AppCrypto<Self::Public, Self::Signature>>(
		call: Call,
		public: <Signature as traits::Verify>::Signer,
		account: AccountId,
		nonce: Index,
	) -> Option<(Call, <UncheckedExtrinsic as traits::Extrinsic>::SignaturePayload)> {
		// take the biggest period possible.
		let period = BlockHashCount::get()
			.checked_next_power_of_two()
			.map(|c| c / 2)
			.unwrap_or(2) as u64;
		let current_block = System::block_number()
			.saturated_into::<u64>()
			// The `System::block_number` is initialized with `n+1`,
			// so the actual block number is `n`.
			.saturating_sub(1);
		let tip = 0;
		let extra: SignedExtra = (
			system::CheckSpecVersion::<Runtime>::new(),
			system::CheckTxVersion::<Runtime>::new(),
			system::CheckGenesis::<Runtime>::new(),
			system::CheckEra::<Runtime>::from(generic::Era::mortal(period, current_block)),
			system::CheckNonce::<Runtime>::from(nonce),
			system::CheckWeight::<Runtime>::new(),
			transaction_payment::ChargeTransactionPayment::<Runtime>::from(tip),
			grandpa::ValidateEquivocationReport::<Runtime>::new(),
		);
		let raw_payload = SignedPayload::new(call, extra).map_err(|e| {
			debug::warn!("Unable to create signed payload: {:?}", e);
		}).ok()?;
		let signature = raw_payload.using_encoded(|payload| {
			C::sign(payload, public)
		})?;
		let address = IdentityLookup::<AccountId>::unlookup(account);
		let (call, extra, _) = raw_payload.deconstruct();
		Some((call, (address, signature.into(), extra)))
	}
}

impl system::offchain::SigningTypes for Runtime {
	type Public = <Signature as traits::Verify>::Signer;
	type Signature = Signature;
}

impl grandpa::Trait for Runtime {
	type Event = Event;
	type Call = Call;

	type KeyOwnerProofSystem = Historical;

	type KeyOwnerProof =
		<Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(KeyTypeId, GrandpaId)>>::Proof;

	type KeyOwnerIdentification = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
		KeyTypeId,
		GrandpaId,
	)>>::IdentificationTuple;

	type HandleEquivocation = grandpa::EquivocationHandler<
		Self::KeyOwnerIdentification,
		report::ReporterAppCrypto,
		Runtime,
		Offences,
	>;
}

parameter_types! {
	pub const SessionDuration: BlockNumber = EPOCH_DURATION_IN_SLOTS as _;
	/// We prioritize im-online heartbeats over election solution submission (staking unsigned).
	pub const ImOnlineUnsignedPriority: TransactionPriority = TransactionPriority::max_value();
}

impl im_online::Trait for Runtime {
	type AuthorityId = ImOnlineId;
	type Event = Event;
	type SessionDuration = SessionDuration;
	type ReportUnresponsiveness = Offences;
	type UnsignedPriority = ImOnlineUnsignedPriority;
}

parameter_types! {
	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
}

impl timestamp::Trait for Runtime {
	/// A timestamp: milliseconds since the unix epoch.
	type Moment = u64;
	type OnTimestampSet = Babe;
	type MinimumPeriod = MinimumPeriod;
}

parameter_types! {
	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
}

impl session::Trait for Runtime {
	type Event = Event;
	type ValidatorId = <Self as system::Trait>::AccountId;
	type ValidatorIdOf = staking::StashOf<Self>;
	type ShouldEndSession = Babe;
	type NextSessionRotation = Babe;
	type SessionManager = session::historical::NoteHistoricalRoot<Self, Staking>;
	type SessionHandler = <opaque::SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
	type Keys = opaque::SessionKeys;
	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
}

impl session::historical::Trait for Runtime {
	type FullIdentification = staking::Exposure<AccountId, Balance>;
	type FullIdentificationOf = staking::ExposureOf<Runtime>;
}

pallet_staking_reward_curve::build! {
	const REWARD_CURVE: PiecewiseLinear<'static> = curve!(
		min_inflation: 0_025_000,
		max_inflation: 0_100_000,
		ideal_stake: 0_500_000,
		falloff: 0_050_000,
		max_piece_count: 40,
		test_precision: 0_005_000,
	);
}

parameter_types! {
	pub const SessionsPerEra: sp_staking::SessionIndex = 6;
	pub const BondingDuration: staking::EraIndex = 24 * 28;
	pub const SlashDeferDuration: staking::EraIndex = 24 * 7; // 1/4 the bonding duration.
	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
	pub const MaxNominatorRewardedPerValidator: u32 = 64;
	pub const ElectionLookahead: BlockNumber = EPOCH_DURATION_IN_BLOCKS / 4;
	pub const MaxIterations: u32 = 10;
	// 0.05%. The higher the value, the more strict solution acceptance becomes.
	pub MinSolutionScoreBump: Perbill = Perbill::from_rational_approximation(5u32, 10_000);
	pub const StakingUnsignedPriority: TransactionPriority = TransactionPriority::max_value() / 2;
}

impl<C> system::offchain::SendTransactionTypes<C> for Runtime where
	Call: From<C>,
{
	type Extrinsic = UncheckedExtrinsic;
	type OverarchingCall = Call;
}

impl staking::Trait for Runtime {
	type Currency = Balances;
	type UnixTime = Timestamp;
	type CurrencyToVote = CurrencyToVoteHandler;
	type RewardRemainder = Treasury;
	type Event = Event;
	type Slash = Treasury; // send the slashed funds to the treasury.
	type Reward = (); // rewards are minted from the void
	type SessionsPerEra = SessionsPerEra;
	type BondingDuration = BondingDuration;
	type SlashDeferDuration = SlashDeferDuration;
	/// A super-majority of the council can cancel the slash.
	type SlashCancelOrigin = EnsureOneOf<
		AccountId,
		EnsureRoot<AccountId>,
		collective::EnsureProportionAtLeast<_3, _4, AccountId, CouncilCollective>
	>;
	type SessionInterface = Self;
	type RewardCurve = RewardCurve;
	type NextNewSession = Session;
	type ElectionLookahead = ElectionLookahead;
	type Call = Call;
	type MaxIterations = MaxIterations;
	type MinSolutionScoreBump = MinSolutionScoreBump;
	type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
	type UnsignedPriority = StakingUnsignedPriority;
}

parameter_types! {
	pub const UncleGenerations: BlockNumber = 5;
}

impl authorship::Trait for Runtime {
	type FindAuthor = session::FindAccountFromAuthorIndex<Self, Babe>;
	type UncleGenerations = UncleGenerations;
	type FilterUncle = ();
	type EventHandler = (Staking, ImOnline);
}

parameter_types! {
	pub OffencesWeightSoftLimit: Weight = Perbill::from_percent(60) * MaximumBlockWeight::get();
}

impl offences::Trait for Runtime {
	type Event = Event;
	type IdentificationTuple = session::historical::IdentificationTuple<Self>;
	type OnOffenceHandler = Staking;
	type WeightSoftLimit = OffencesWeightSoftLimit;
}

parameter_types! {
	pub const ExistentialDeposit: u128 = 500;
}

impl balances::Trait for Runtime {
	/// The type for recording an account's balance.
	type Balance = Balance;
	/// The ubiquitous event type.
	type Event = Event;
	type DustRemoval = ();
	type ExistentialDeposit = ExistentialDeposit;
	type AccountStore = System;
}

parameter_types! {
	pub const TransactionByteFee: Balance = 1;
	pub const TargetBlockFullness: Perquintill = Perquintill::from_percent(25);
	pub AdjustmentVariable: Multiplier = Multiplier::saturating_from_rational(1, 100_000);
	pub MinimumMultiplier: Multiplier = Multiplier::saturating_from_rational(1, 1_000_000_000u128);
}

impl transaction_payment::Trait for Runtime {
	type Currency = Balances;
	type OnTransactionPayment = DealWithFees;
	type TransactionByteFee = TransactionByteFee;
	type WeightToFee = IdentityFee<Balance>;
	type FeeMultiplierUpdate =
		TargetedFeeAdjustment<Self, TargetBlockFullness, AdjustmentVariable, MinimumMultiplier>;
}

impl sudo::Trait for Runtime {
	type Event = Event;
	type Call = Call;
}

impl utility::Trait for Runtime {
	type Event = Event;
	type Call = Call;
}

parameter_types! {
	pub const ProposalBond: Permill = Permill::from_percent(5);
	pub const ProposalBondMinimum: Balance = 1 * DOLLARS;
	pub const SpendPeriod: BlockNumber = 1 * DAYS;
	pub const Burn: Permill = Permill::from_percent(50);
	pub const TipCountdown: BlockNumber = 1 * DAYS;
	pub const TipFindersFee: Percent = Percent::from_percent(20);
	pub const TipReportDepositBase: Balance = 1 * DOLLARS;
	pub const TipReportDepositPerByte: Balance = 1 * CENTS;
	pub const TreasuryModuleId: ModuleId = ModuleId(*b"py/trsry");
}

impl treasury::Trait for Runtime {
	type ModuleId = TreasuryModuleId;
	type Currency = Balances;
	type ApproveOrigin = EnsureOneOf<
		AccountId,
		EnsureRoot<AccountId>,
		collective::EnsureMembers<_4, AccountId, CouncilCollective>
	>;
	type RejectOrigin = EnsureOneOf<
		AccountId,
		EnsureRoot<AccountId>,
		collective::EnsureMembers<_2, AccountId, CouncilCollective>
	>;
	type Tippers = Elections;
	type TipCountdown = TipCountdown;
	type TipFindersFee = TipFindersFee;
	type TipReportDepositBase = TipReportDepositBase;
	type TipReportDepositPerByte = TipReportDepositPerByte;
	type Event = Event;
	type ProposalRejection = ();
	type ProposalBond = ProposalBond;
	type ProposalBondMinimum = ProposalBondMinimum;
	type SpendPeriod = SpendPeriod;
	type Burn = Burn;
}

parameter_types! {
	pub const CouncilMotionDuration: BlockNumber = 5 * DAYS;
	pub const CouncilMaxProposals: u32 = 100;
}

type CouncilCollective = collective::Instance1;
impl collective::Trait<CouncilCollective> for Runtime {
	type Origin = Origin;
	type Proposal = Call;
	type Event = Event;
	type MotionDuration = CouncilMotionDuration;
	type MaxProposals = CouncilMaxProposals;
}

parameter_types! {
	pub const CandidacyBond: Balance = 10 * DOLLARS;
	pub const VotingBond: Balance = 1 * DOLLARS;
	pub const TermDuration: BlockNumber = 1 * HOURS;
	pub const DesiredMembers: u32 = 4;
	pub const DesiredRunnersUp: u32 = 3;
	pub const ElectionsPhragmenModuleId: LockIdentifier = *b"phrelect";
}

// Make sure that there are no more than `MAX_MEMBERS` members elected via elections-phragmen.
const_assert!(DesiredMembers::get() <= collective::MAX_MEMBERS);

impl elections_phragmen::Trait for Runtime {
	type Event = Event;
	type ModuleId = ElectionsPhragmenModuleId;
	type Currency = Balances;
	type ChangeMembers = Council;
	// NOTE: this implies that council's genesis members cannot be set directly and must come from
	// this module.
	type InitializeMembers = Council;
	type CurrencyToVote = CurrencyToVoteHandler;
	type CandidacyBond = CandidacyBond;
	type VotingBond = VotingBond;
	type LoserCandidate = ();
	type BadReport = ();
	type KickedMember = ();
	type DesiredMembers = DesiredMembers;
	type DesiredRunnersUp = DesiredRunnersUp;
	type TermDuration = TermDuration;
}

parameter_types! {
	pub const TechnicalMotionDuration: BlockNumber = 5 * DAYS;
	pub const TechnicalMaxProposals: u32 = 100;
}

type TechnicalCollective = collective::Instance2;
impl collective::Trait<TechnicalCollective> for Runtime {
	type Origin = Origin;
	type Proposal = Call;
	type Event = Event;
	type MotionDuration = TechnicalMotionDuration;
	type MaxProposals = TechnicalMaxProposals;
}

type EnsureRootOrHalfCouncil = EnsureOneOf<
	AccountId,
	EnsureRoot<AccountId>,
	collective::EnsureProportionMoreThan<_1, _2, AccountId, CouncilCollective>
>;
impl membership::Trait<membership::Instance1> for Runtime {
	type Event = Event;
	type AddOrigin = EnsureRootOrHalfCouncil;
	type RemoveOrigin = EnsureRootOrHalfCouncil;
	type SwapOrigin = EnsureRootOrHalfCouncil;
	type ResetOrigin = EnsureRootOrHalfCouncil;
	type PrimeOrigin = EnsureRootOrHalfCouncil;
	type MembershipInitialized = TechnicalCommittee;
	type MembershipChanged = TechnicalCommittee;
}

parameter_types! {
	pub const LaunchPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	pub const VotingPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	pub const FastTrackVotingPeriod: BlockNumber = 3 * 24 * 60 * MINUTES;
	pub const InstantAllowed: bool = true;
	pub const MinimumDeposit: Balance = 100 * DOLLARS;
	pub const EnactmentPeriod: BlockNumber = 30 * 24 * 60 * MINUTES;
	pub const CooloffPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	// One cent: $10,000 / MB
	pub const PreimageByteDeposit: Balance = 1 * CENTS;
	pub const MaxVotes: u32 = 100;
}

impl democracy::Trait for Runtime {
	type Proposal = Call;
	type Event = Event;
	type Currency = Balances;
	type EnactmentPeriod = EnactmentPeriod;
	type LaunchPeriod = LaunchPeriod;
	type VotingPeriod = VotingPeriod;
	type MinimumDeposit = MinimumDeposit;
	/// A straight majority of the council can decide what their next motion is.
	type ExternalOrigin = collective::EnsureProportionAtLeast<_1, _2, AccountId, CouncilCollective>;
	/// A super-majority can have the next scheduled referendum be a straight majority-carries vote.
	type ExternalMajorityOrigin = collective::EnsureProportionAtLeast<_3, _4, AccountId, CouncilCollective>;
	/// A unanimous council can have the next scheduled referendum be a straight default-carries
	/// (NTB) vote.
	type ExternalDefaultOrigin = collective::EnsureProportionAtLeast<_1, _1, AccountId, CouncilCollective>;
	/// Two thirds of the technical committee can have an ExternalMajority/ExternalDefault vote
	/// be tabled immediately and with a shorter voting/enactment period.
	type FastTrackOrigin = collective::EnsureProportionAtLeast<_2, _3, AccountId, TechnicalCollective>;
	type InstantOrigin = collective::EnsureProportionAtLeast<_1, _1, AccountId, TechnicalCollective>;
	type InstantAllowed = InstantAllowed;
	type FastTrackVotingPeriod = FastTrackVotingPeriod;
	// To cancel a proposal which has been passed, 2/3 of the council must agree to it.
	type CancellationOrigin = collective::EnsureProportionAtLeast<_2, _3, AccountId, CouncilCollective>;
	// Any single technical committee member may veto a coming council proposal, however they can
	// only do it once and it lasts only for the cooloff period.
	type VetoOrigin = collective::EnsureMember<AccountId, TechnicalCollective>;
	type CooloffPeriod = CooloffPeriod;
	type PreimageByteDeposit = PreimageByteDeposit;
	type OperationalPreimageOrigin = collective::EnsureMember<AccountId, CouncilCollective>;
	type Slash = Treasury;
	type Scheduler = Scheduler;
	type MaxVotes = MaxVotes;
}

parameter_types! {
	pub MaximumSchedulerWeight: Weight = Perbill::from_percent(80) * MaximumBlockWeight::get();
}

impl scheduler::Trait for Runtime {
	type Event = Event;
	type Origin = Origin;
	type Call = Call;
	type MaximumWeight = MaximumSchedulerWeight;
}

/// Used for the module template in `./template.rs`
impl template::Trait for Runtime {
	type Event = Event;
}

impl organization::Trait for Runtime {
	type Event = Event;
	type Balance = Balance;
}

construct_runtime!(
	pub enum Runtime where
		Block = Block,
		NodeBlock = opaque::Block,
		UncheckedExtrinsic = UncheckedExtrinsic
	{
		System: system::{Module, Call, Config, Storage, Event<T>},
		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
		Timestamp: timestamp::{Module, Call, Storage, Inherent},
		Babe: babe::{Module, Call, Storage, Config, Inherent(Timestamp)},
		Grandpa: grandpa::{Module, Call, Storage, Config, Event},
		Balances: balances::{Module, Call, Storage, Config<T>, Event<T>},
		TransactionPayment: transaction_payment::{Module, Storage},
		Sudo: sudo::{Module, Call, Config<T>, Storage, Event<T>},

		// Staking related module
		Staking: staking::{Module, Call, Config<T>, Storage, Event<T>, ValidateUnsigned},
		Authorship: authorship::{Module, Call, Storage, Inherent},
		Offences: offences::{Module, Call, Storage, Event},
		Session: session::{Module, Call, Storage, Event, Config<T>},
		Historical: session_historical::{Module},
		Utility: utility::{Module, Call, Event},
		ImOnline: im_online::{Module, Call, Storage, Event<T>, ValidateUnsigned, Config<T>},

		// Governance related module
		Treasury: treasury::{Module, Call, Storage, Config, Event<T>},
		Council: collective::<Instance1>::{Module, Call, Storage, Origin<T>, Event<T>, Config<T>},
		TechnicalCommittee: collective::<Instance2>::{Module, Call, Storage, Origin<T>, Event<T>, Config<T>},
		Elections: elections_phragmen::{Module, Call, Storage, Event<T>, Config<T>},
		TechnicalMembership: membership::<Instance1>::{Module, Call, Storage, Event<T>, Config<T>},
		Democracy: democracy::{Module, Call, Storage, Config, Event<T>},
		Scheduler: scheduler::{Module, Call, Storage, Event<T>},

		// Business module
		TemplateModule: template::{Module, Call, Storage, Event<T>},
		OrganizationModule: organization::{Module, Call, Storage, Event<T>},
	}
);

/// The address format for describing accounts.
pub type Address = AccountId;
/// Block header type as expected by this runtime.
pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
/// Block type as expected by this runtime.
pub type Block = generic::Block<Header, UncheckedExtrinsic>;
/// A Block signed with a Justification
pub type SignedBlock = generic::SignedBlock<Block>;
/// BlockId type as expected by this runtime.
pub type BlockId = generic::BlockId<Block>;
/// The SignedExtension to the basic transaction logic.
pub type SignedExtra = (
	system::CheckSpecVersion<Runtime>,
	system::CheckTxVersion<Runtime>,
	system::CheckGenesis<Runtime>,
	system::CheckEra<Runtime>,
	system::CheckNonce<Runtime>,
	system::CheckWeight<Runtime>,
	transaction_payment::ChargeTransactionPayment<Runtime>,
	grandpa::ValidateEquivocationReport<Runtime>,
);
/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
/// Extrinsic type that has already been checked.
pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Call, SignedExtra>;
/// Executive: handles dispatch to the various modules.
pub type Executive = frame_executive::Executive<Runtime, Block, system::ChainContext<Runtime>, Runtime, AllModules>;
/// The payload being signed in transactions.
pub type SignedPayload = generic::SignedPayload<Call, SignedExtra>;

impl_runtime_apis! {
	impl sp_api::Core<Block> for Runtime {
		fn version() -> RuntimeVersion {
			VERSION
		}

		fn execute_block(block: Block) {
			Executive::execute_block(block)
		}

		fn initialize_block(header: &<Block as BlockT>::Header) {
			Executive::initialize_block(header)
		}
	}

	impl sp_api::Metadata<Block> for Runtime {
		fn metadata() -> OpaqueMetadata {
			Runtime::metadata().into()
		}
	}

	impl sp_block_builder::BlockBuilder<Block> for Runtime {
		fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
			Executive::apply_extrinsic(extrinsic)
		}

		fn finalize_block() -> <Block as BlockT>::Header {
			Executive::finalize_block()
		}

		fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
			data.create_extrinsics()
		}

		fn check_inherents(
			block: Block,
			data: sp_inherents::InherentData,
		) -> sp_inherents::CheckInherentsResult {
			data.check_extrinsics(&block)
		}

		fn random_seed() -> <Block as BlockT>::Hash {
			RandomnessCollectiveFlip::random_seed()
		}
	}

	impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
		fn validate_transaction(
			source: TransactionSource,
			tx: <Block as BlockT>::Extrinsic,
		) -> TransactionValidity {
			Executive::validate_transaction(source, tx)
		}
	}

	impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
		fn offchain_worker(header: &<Block as BlockT>::Header) {
			Executive::offchain_worker(header)
		}
	}

	impl sp_consensus_babe::BabeApi<Block> for Runtime {
		fn configuration() -> sp_consensus_babe::BabeGenesisConfiguration {
			// The choice of `c` parameter (where `1 - c` represents the
			// probability of a slot being empty), is done in accordance to the
			// slot duration and expected target block time, for safely
			// resisting network delays of maximum two seconds.
			// <https://research.web3.foundation/en/latest/polkadot/BABE/Babe/#6-practical-results>
			sp_consensus_babe::BabeGenesisConfiguration {
				slot_duration: Babe::slot_duration(),
				epoch_length: EpochDuration::get(),
				c: PRIMARY_PROBABILITY,
				genesis_authorities: Babe::authorities(),
				randomness: Babe::randomness(),
				allowed_slots: sp_consensus_babe::AllowedSlots::PrimaryAndSecondaryPlainSlots,
			}
		}

		fn current_epoch_start() -> sp_consensus_babe::SlotNumber {
			Babe::current_epoch_start()
		}
	}

	impl sp_session::SessionKeys<Block> for Runtime {
		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
			opaque::SessionKeys::generate(seed)
		}

		fn decode_session_keys(
			encoded: Vec<u8>,
		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
		}
	}

	impl fg_primitives::GrandpaApi<Block> for Runtime {
		fn grandpa_authorities() -> GrandpaAuthorityList {
			Grandpa::grandpa_authorities()
		}

		fn submit_report_equivocation_extrinsic(
			equivocation_proof: fg_primitives::EquivocationProof<
				<Block as BlockT>::Hash,
				NumberFor<Block>,
			>,
			key_owner_proof: fg_primitives::OpaqueKeyOwnershipProof,
		) -> Option<()> {
			let key_owner_proof = key_owner_proof.decode()?;

			Grandpa::submit_report_equivocation_extrinsic(
				equivocation_proof,
				key_owner_proof,
			)
		}

		fn generate_key_ownership_proof(
			_set_id: fg_primitives::SetId,
			authority_id: GrandpaId,
		) -> Option<fg_primitives::OpaqueKeyOwnershipProof> {
			use codec::Encode;

			Historical::prove((fg_primitives::KEY_TYPE, authority_id))
				.map(|p| p.encode())
				.map(fg_primitives::OpaqueKeyOwnershipProof::new)
		}
	}
}