added token decimals and token name to chainspec (#131)

* added decimals and token name to chainspec

* refactor

* linting

* more linting

* linting

* linting

* Update src/chain_spec.rs

Co-Authored-By: Mudit Gupta <guptamudit@ymail.com>

Cargo.toml

@@ -19,6 +19,7 @@ futures = "0.1.29"
 exit-future = "0.1.4"
 slog = "2.5.2"
 hex-literal = "0.2.1"
+serde_json = '1.0.0'
 polymesh-runtime = { path = "runtime" }
 polymesh-primitives = { path = "primitives" }
 sr-io = { git = "https://github.com/paritytech/substrate", rev = "7d7e74fb77b6bee2ce9d6ebafcae09caff2d0e50" }

src/chain_spec.rs

@@ -12,6 +12,8 @@ use polymesh_runtime::{
     StakerStatus, StakingConfig, SudoConfig, SystemConfig, WASM_BINARY,
 };
 use primitives::{Pair, Public};
+use serde_json::json;
+use substrate_service::Properties;
 
 /// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
 pub type ChainSpec = substrate_service::ChainSpec<GenesisConfig>;
@@ -73,7 +75,7 @@ impl Alternative {
                 None,
                 None,
                 None,
-                None,
+                Some(polymath_props()),
             ),
             Alternative::LocalTestnet => ChainSpec::from_genesis(
                 "Local Testnet",
@@ -108,7 +110,7 @@ impl Alternative {
                 None,
                 None,
                 None,
-                None,
+                Some(polymath_props()),
             ),
             Alternative::StatsTestnet => ChainSpec::from_genesis(
                 "Stats Testnet",
@@ -142,7 +144,7 @@ impl Alternative {
                 None,
                 None,
                 None,
-                None,
+                Some(polymath_props()),
             ),
         })
     }
@@ -157,6 +159,13 @@ impl Alternative {
     }
 }
 
+fn polymath_props() -> Properties {
+    json!({"tokenDecimals": 6, "tokenSymbol": "POLY" })
+        .as_object()
+        .unwrap()
+        .clone()
+}
+
 fn session_keys(grandpa: GrandpaId, babe: BabeId, im_online: ImOnlineId) -> SessionKeys {
     SessionKeys {
         babe,