Merge pull request #7272 from BitGo/COIN-6100

feat(sdk-coin-canton): added from implementation to the builder factory

Author: ravibitgo

modules/sdk-coin-canton/src/lib/index.ts

@@ -5,6 +5,7 @@ export { KeyPair } from './keyPair';
 export { Transaction } from './transaction/transaction';
 export { TransactionBuilder } from './transactionBuilder';
 export { TransactionBuilderFactory } from './transactionBuilderFactory';
+export { WalletInitBuilder } from './walletInitBuilder';
 export { WalletInitTransaction } from './walletInitialization/walletInitTransaction';
 
 export { Utils, Interface };

modules/sdk-coin-canton/src/lib/transactionBuilderFactory.ts

@@ -1,18 +1,39 @@
-import { BaseTransaction, BaseTransactionBuilderFactory } from '@bitgo/sdk-core';
+import {
+  BaseTransaction,
+  BaseTransactionBuilderFactory,
+  InvalidTransactionError,
+  TransactionType,
+} from '@bitgo/sdk-core';
+import { BaseCoin as CoinConfig } from '@bitgo/statics';
 import { TransactionBuilder } from './transactionBuilder';
 import { TransferBuilder } from './transferBuilder';
+import { Transaction } from './transaction/transaction';
 import { WalletInitBuilder } from './walletInitBuilder';
 import { WalletInitTransaction } from './walletInitialization/walletInitTransaction';
 
 export class TransactionBuilderFactory extends BaseTransactionBuilderFactory {
+  constructor(_coinConfig: Readonly<CoinConfig>) {
+    super(_coinConfig);
+  }
   /** @inheritdoc */
-  from(raw: string): TransactionBuilder {
-    throw new Error('Method not implemented.');
+  from(raw: string): TransactionBuilder | WalletInitBuilder {
+    try {
+      const tx = new WalletInitTransaction(this._coinConfig);
+      tx.fromRawTransaction(raw);
+      return this.getWalletInitializationBuilder(tx);
+    } catch {
+      const tx = new Transaction(this._coinConfig);
+      tx.fromRawTransaction(raw);
+      if (tx.type === TransactionType.Send) {
+        return this.getTransferBuilder(tx);
+      }
+      throw new InvalidTransactionError('unsupported transaction');
+    }
   }
 
   /** @inheritdoc */
-  getTransferBuilder(): TransferBuilder {
-    throw new Error('Method not implemented.');
+  getTransferBuilder(tx?: Transaction): TransferBuilder {
+    return TransactionBuilderFactory.initializeBuilder(tx, new TransferBuilder(this._coinConfig));
   }
 
   /** @inheritdoc */