Add transcoder for Unlock stake txn type. Add support for approve UI …

…for this new txn type

src/app/approve/approve.component.ts

@@ -39,7 +39,7 @@ import {
   TransactionSpendingLimit,
   TransactionMetadataRegisterAsValidator,
   TransactionMetadataUnregisterAsValidator,
-  TransactionMetadataStake, TransactionMetadataUnstake,
+  TransactionMetadataStake, TransactionMetadataUnstake, TransactionMetadataUnlockStake,
 } from '../../lib/deso/transaction';
 import { ExtraData } from '../../types/identity';
 import { AccountService } from '../account.service';
@@ -622,6 +622,16 @@ export class ApproveComponent implements OnInit {
         );
         description = `unstake ${unstakeAmountNanos} $DESO from ${unstakeValidatorPublicKey}`;
         break;
+      case TransactionMetadataUnlockStake:
+        const unlockStakeMetadata = this.transaction
+          .metadata as TransactionMetadataUnlockStake;
+        const unlockStakeValidatorPublicKey = this.base58KeyCheck(
+          unlockStakeMetadata.validatorPublicKey
+        );
+        publicKeys = [unlockStakeValidatorPublicKey];
+        description = `unlock stake from ${unlockStakeValidatorPublicKey}, ` +
+          `starting from epochs ${unlockStakeMetadata.startEpochNumber} to ${unlockStakeMetadata.endEpochNumber}`;
+        break;
     }
 
     // Set the transaction description based on the description populated with public keys.

src/app/identity.service.ts

@@ -37,7 +37,7 @@ import {
   TransactionMetadataUpdateProfile,
   TransactionMetadataRegisterAsValidator,
   TransactionMetadataUnregisterAsValidator,
-  TransactionMetadataStake, TransactionMetadataUnstake,
+  TransactionMetadataStake, TransactionMetadataUnstake, TransactionMetadataUnlockStake,
 } from '../lib/deso/transaction';
 import { SwalHelper } from '../lib/helpers/swal-helper';
 import { AccessLevel, PublicUserInfo } from '../types/identity';
@@ -525,6 +525,7 @@ export class IdentityService {
       case TransactionMetadataUnregisterAsValidator:
       case TransactionMetadataStake:
       case TransactionMetadataUnstake:
+      case TransactionMetadataUnlockStake:
         return AccessLevel.Full;
 
       case TransactionMetadataFollow:

src/lib/deso/transaction.ts

@@ -629,6 +629,17 @@ export class TransactionMetadataUnstake extends TransactionMetadata {
   unstakeAmountNanos: Buffer = Buffer.alloc(0);
 }
 
+export class TransactionMetadataUnlockStake extends TransactionMetadata {
+  @Transcode(VarBuffer)
+  validatorPublicKey: Buffer = Buffer.alloc(0);
+
+  @Transcode(Uvarint64)
+  startEpochNumber: number = 0;
+
+  @Transcode(Uvarint64)
+  endEpochNumber: number = 0;
+}
+
 export const TransactionTypeMetadataMap = {
   1: TransactionMetadataBlockReward,
   2: TransactionMetadataBasicTransfer,
@@ -666,6 +677,7 @@ export const TransactionTypeMetadataMap = {
   35: TransactionMetadataUnregisterAsValidator,
   36: TransactionMetadataStake,
   37: TransactionMetadataUnstake,
+  38: TransactionMetadataUnlockStake,
 };
 
 export class Transaction extends BinaryRecord {