adds cli command to view details for raw, unsigned transactions (#4931)

allows users to view details for a transaction without needing to use the REPL

useful for situations where you have a serialized transaction, but don't know
what's in it

Author: hughy

ironfish-cli/src/commands/wallet/transaction/view.ts

@@ -0,0 +1,125 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+import {
+  ErrorUtils,
+  RawTransaction,
+  RawTransactionSerde,
+  RpcClient,
+  UnsignedTransaction,
+} from '@ironfish/sdk'
+import { Flags } from '@oclif/core'
+import inquirer from 'inquirer'
+import { IronfishCommand } from '../../../command'
+import { RemoteFlags } from '../../../flags'
+import { longPrompt } from '../../../utils/longPrompt'
+import {
+  renderRawTransactionDetails,
+  renderUnsignedTransactionDetails,
+} from '../../../utils/transaction'
+
+export class TransactionViewCommand extends IronfishCommand {
+  static description = `View transaction details`
+
+  static flags = {
+    ...RemoteFlags,
+    account: Flags.string({
+      char: 'f',
+      description: 'The name of the account to use to for viewing transaction details',
+    }),
+    transaction: Flags.string({
+      char: 't',
+      description: 'The hex-encoded raw transaction or unsigned transaction to view',
+    }),
+  }
+
+  async start(): Promise<void> {
+    const { flags } = await this.parse(TransactionViewCommand)
+
+    const client = await this.sdk.connectRpc()
+
+    const account = flags.account ?? (await this.selectAccount(client))
+
+    let transactionString = flags.transaction as string
+    if (!transactionString) {
+      transactionString = await longPrompt(
+        'Enter the hex-encoded raw transaction or unsigned transaction to view',
+        {
+          required: true,
+        },
+      )
+    }
+
+    const rawTransaction = this.tryDeserializeRawTransaction(transactionString)
+    if (rawTransaction) {
+      return await renderRawTransactionDetails(client, rawTransaction, account, this.logger)
+    }
+
+    const unsignedTransaction = this.tryDeserializeUnsignedTransaction(transactionString)
+    if (unsignedTransaction) {
+      return await renderUnsignedTransactionDetails(
+        client,
+        unsignedTransaction,
+        account,
+        this.logger,
+      )
+    }
+
+    this.error(
+      'Unable to deserialize transaction input as a raw transacton or an unsigned transaction',
+    )
+  }
+
+  async selectAccount(client: Pick<RpcClient, 'wallet'>): Promise<string> {
+    const accountsResponse = await client.wallet.getAccounts()
+
+    const choices = []
+    for (const account of accountsResponse.content.accounts) {
+      choices.push({
+        account,
+        value: account,
+      })
+    }
+
+    choices.sort()
+
+    const selection = await inquirer.prompt<{
+      account: string
+    }>([
+      {
+        name: 'account',
+        message: 'Select account',
+        type: 'list',
+        choices,
+      },
+    ])
+
+    return selection.account
+  }
+
+  tryDeserializeRawTransaction(transaction: string): RawTransaction | undefined {
+    try {
+      return RawTransactionSerde.deserialize(Buffer.from(transaction, 'hex'))
+    } catch (e) {
+      this.logger.debug(
+        `Failed to deserialize transaction as RawTransaction: ${ErrorUtils.renderError(e)}`,
+      )
+
+      return undefined
+    }
+  }
+
+  tryDeserializeUnsignedTransaction(transaction: string): UnsignedTransaction | undefined {
+    try {
+      return new UnsignedTransaction(Buffer.from(transaction, 'hex'))
+    } catch (e) {
+      this.logger.debug(
+        `Failed to deserialize transaction as UnsignedTransaction: ${ErrorUtils.renderError(
+          e,
+        )}`,
+      )
+
+      return undefined
+    }
+  }
+}