feat: genesis config for linking pallet (#476)

## No Ticket

* adds accounts for doc tests to endowed accounts
* Linking Pallet
* MigrationState is Done in genesis (fix
KILTprotocol/ticket#2475)
    * allow to configure pallet in genesis


I added the option to configure the DidLookupPallet in genesis, so that
we can start a test chain with already populated DID-Account links. We
could start adding genesis configs to the other pallets as well. Some
tests require well known DIDs or w3n to exist. We could add them in the
genesis config, so that the tests work out of the box with dev chains.

nodes/parachain/src/chain_spec/peregrine.rs

@@ -219,5 +219,6 @@ fn testnet_genesis(
 		polkadot_xcm: PolkadotXcmConfig {
 			safe_xcm_version: Some(SAFE_XCM_VERSION),
 		},
+		did_lookup: Default::default(),
 	}
 }

nodes/parachain/src/chain_spec/spiritnet.rs

@@ -323,5 +323,6 @@ fn testnet_genesis(
 		polkadot_xcm: PolkadotXcmConfig {
 			safe_xcm_version: Some(SAFE_XCM_VERSION),
 		},
+		did_lookup: Default::default(),
 	}
 }

nodes/standalone/src/chain_spec.rs

@@ -182,6 +182,7 @@ fn devnet_genesis(
 		aura: Default::default(),
 		grandpa: Default::default(),
 		sudo: SudoConfig { key: Some(root_key) },
+		did_lookup: Default::default(),
 	}
 }
 

pallets/pallet-did-lookup/Cargo.toml

@@ -46,6 +46,9 @@ sp-std.workspace = true
 # Benchmarking dependencies
 frame-benchmarking = {workspace = true, optional = true}
 
+# std dependencies
+serde = {workspace = true, optional = true}
+
 [features]
 default = ["std"]
 runtime-benchmarks = [
@@ -61,10 +64,12 @@ std = [
   "frame-support/std",
   "frame-system/std",
   "hex/std",
+  "kilt-support/std",
   "log/std",
   "libsecp256k1/std",
   "scale-info/std",
   "sha3/std",
+  "serde",
   "sp-core/std",
   "sp-io/std",
   "sp-runtime/std",

pallets/pallet-did-lookup/src/account.rs

@@ -31,6 +31,7 @@ use sp_core::{ecdsa, H160, H256};
 
 /// The AccountId20 type.
 /// It is a 20-byte Ethereum address.
+#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
 #[derive(
 	Eq, PartialEq, Copy, Clone, Encode, Decode, TypeInfo, MaxEncodedLen, Default, PartialOrd, Ord, RuntimeDebug,
 )]

pallets/pallet-did-lookup/src/connection_record.rs

@@ -21,6 +21,7 @@ use kilt_support::deposit::Deposit;
 use scale_info::TypeInfo;
 
 /// A record in the ConnectedDid map.
+#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Clone, Decode, Debug, Encode, TypeInfo, Eq, PartialEq, MaxEncodedLen)]
 pub struct ConnectionRecord<DidIdentifier, Account, Balance> {
 	/// The did that is connected to the key under which the record was stored.

pallets/pallet-did-lookup/src/lib.rs

@@ -95,7 +95,7 @@ pub mod pallet {
 		type OriginSuccess: CallSources<AccountIdOf<Self>, DidIdentifierOf<Self>>;
 
 		/// The identifier to which accounts can get associated.
-		type DidIdentifier: Parameter + MaxEncodedLen;
+		type DidIdentifier: Parameter + MaxEncodedLen + MaybeSerializeDeserialize;
 
 		/// The currency that is used to reserve funds for each did.
 		type Currency: ReservableCurrency<AccountIdOf<Self>>;
@@ -170,6 +170,34 @@ pub mod pallet {
 		Migration,
 	}
 
+	#[pallet::genesis_config]
+	pub struct GenesisConfig<T: Config> {
+		pub links: Vec<(LinkableAccountId, ConnectionRecordOf<T>)>,
+	}
+
+	#[cfg(feature = "std")]
+	impl<T: Config> Default for GenesisConfig<T> {
+		fn default() -> Self {
+			Self {
+				links: Default::default(),
+			}
+		}
+	}
+
+	#[pallet::genesis_build]
+	impl<T: Config> GenesisBuild<T> for GenesisConfig<T> {
+		fn build(&self) {
+			// populate link records
+			for (acc, connection) in &self.links {
+				ConnectedDids::<T>::insert(acc, connection);
+				ConnectedAccounts::<T>::insert(&connection.did, acc, ());
+			}
+
+			// set migration state to done
+			MigrationStateStore::<T>::set(MigrationState::Done);
+		}
+	}
+
 	#[pallet::call]
 	impl<T: Config> Pallet<T>
 	where

pallets/pallet-did-lookup/src/linkable_account.rs

@@ -22,6 +22,7 @@ use sp_runtime::AccountId32;
 
 use crate::account::AccountId20;
 
+#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, MaxEncodedLen, TypeInfo)]
 pub enum LinkableAccountId {
 	AccountId20(AccountId20),

support/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
 authors.workspace = true
+description = "Shared traits and structs used across the KILT pallets"
 documentation.workspace = true
 edition.workspace = true
 homepage.workspace = true
 license-file.workspace = true
+name = "kilt-support"
 readme.workspace = true
 repository.workspace = true
 version.workspace = true
-name = "kilt-support"
-description = "Shared traits and structs used across the KILT pallets"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
@@ -25,6 +25,9 @@ sp-core.workspace = true
 sp-runtime.workspace = true
 sp-std.workspace = true
 
+# std dependencies
+serde = {workspace = true, optional = true}
+
 [features]
 default = ["std"]
 mock = []
@@ -38,6 +41,7 @@ std = [
   "frame-support/std",
   "frame-system/std",
   "scale-info/std",
+  "serde",
   "sp-core/std",
   "sp-runtime/std",
   "sp-std/std",

support/src/deposit.rs

@@ -22,6 +22,7 @@ use scale_info::TypeInfo;
 use sp_runtime::{traits::Zero, DispatchError};
 
 /// An amount of balance reserved by the specified address.
+#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Clone, Debug, Encode, Decode, Eq, PartialEq, Ord, PartialOrd, TypeInfo, MaxEncodedLen)]
 pub struct Deposit<Account, Balance> {
 	pub owner: Account,

support/src/mock.rs

@@ -114,6 +114,7 @@ pub mod mock_origin {
 	}
 }
 
+#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Debug, Clone, PartialEq, Eq, Encode, Decode, TypeInfo, MaxEncodedLen)]
 pub struct SubjectId(pub AccountId32);