fix(Transaction.get): Fixed bug when Genesis TX was input to queried TX

src/transaction.js

@@ -43,7 +43,7 @@ class Transaction {
       }
 
       const txDetails = await this.rawTransaction.getTxData(txid)
-      // console.log(`txDetails: ${JSON.stringify(txDetails, null, 2)}`)
+      console.log(`txDetails: ${JSON.stringify(txDetails, null, 2)}`)
 
       // Setup default SLP properties.
       txDetails.isValidSLPTx = false
@@ -53,7 +53,7 @@ class Transaction {
       let outTokenData
       try {
         outTokenData = await this.slpUtils.decodeOpReturn(txid)
-        // console.log(`outTokenData: ${JSON.stringify(outTokenData, null, 2)}`)
+        console.log(`outTokenData: ${JSON.stringify(outTokenData, null, 2)}`)
 
         // Get Genesis data for this token.
         const genesisData = await this.slpUtils.decodeOpReturn(
@@ -61,7 +61,7 @@ class Transaction {
           // decodeOpReturnCache
           // usrObj // pass user data when making an internal call.
         )
-        // console.log(`genesisData: ${JSON.stringify(genesisData, null, 2)}`)
+        console.log(`genesisData: ${JSON.stringify(genesisData, null, 2)}`)
 
         // Add token information to the tx details object.
         txDetails.tokenTxType = outTokenData.txType
@@ -97,15 +97,29 @@ class Transaction {
             // If decodeOpReturn() throws an error, then this input is not
             // from an SLP transaction and can be ignored.
             const inTokenData = await this.slpUtils.decodeOpReturn(thisVin.txid)
-            // console.log(
-            //   `vin[${i}] tokenData: ${JSON.stringify(inTokenData, null, 2)}`
-            // )
+            console.log(
+              `vin[${i}] tokenData: ${JSON.stringify(inTokenData, null, 2)}`
+            )
 
+            let tokenQty = 0
+            if (inTokenData.txType === 'SEND') {
               // Get the appropriate vout token amount. This may throw an error,
               // which means this Vin is not actually a token UTXO, it was just
               // associated with a previous token TX.
-            const tokenQty = inTokenData.amounts[thisVin.vout - 1]
-            // console.log(`tokenQty: ${JSON.stringify(tokenQty, null, 2)}`)
+              tokenQty = inTokenData.amounts[thisVin.vout - 1]
+              console.log(`tokenQty: ${JSON.stringify(tokenQty, null, 2)}`)
+            } else if (inTokenData.txType === 'GENESIS') {
+              // Only vout[1] of a Genesis transaction represents the tokens.
+              // Any other outputs in that transaction are normal BCH UTXOs.
+              if (thisVin.vout === 1) {
+                tokenQty = inTokenData.qty
+                console.log(`tokenQty: ${JSON.stringify(tokenQty, null, 2)}`)
+              }
+            } else {
+              console.log('Unexpected code path. Is this a MINT transaction?')
+              console.log(inTokenData)
+              throw new Error('Unexpected code path')
+            }
 
             if (tokenQty) {
               const realQty =

test/unit/fixtures/transaction-mock.js

@@ -175,10 +175,124 @@ const mockOpReturnData03 = {
   amounts: ['1000000000', '99883400000000']
 }
 
+const genesisTestInputTx = {
+  txid: '874306bda204d3a5dd15e03ea5732cccdca4c33a52df35162cdd64e30ea7f04e',
+  hash: '874306bda204d3a5dd15e03ea5732cccdca4c33a52df35162cdd64e30ea7f04e',
+  version: 1,
+  size: 480,
+  locktime: 543408,
+  vin: [
+    {
+      txid: '323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d35',
+      vout: 1,
+      scriptSig: {
+        asm:
+          '30440220268dacee1117975d904dd0d45ef8de42b86030d825a9522bae196a38bbf6b271022001ae1ce2536ab300040e597bcfaa8ef9fb2beaf702d0842f3161aae8e9867f55[ALL|FORKID] 028ff9e32b0dbc82c1d5e0fc945b2537b00420513b10684726f312f1b717c0ae11',
+        hex:
+          '4730440220268dacee1117975d904dd0d45ef8de42b86030d825a9522bae196a38bbf6b271022001ae1ce2536ab300040e597bcfaa8ef9fb2beaf702d0842f3161aae8e9867f554121028ff9e32b0dbc82c1d5e0fc945b2537b00420513b10684726f312f1b717c0ae11'
+      },
+      sequence: 4294967294,
+      address: 'bitcoincash:qp2jesd06k8ycj4wvkpl9lcwaemtr04f5yphjsa07v',
+      value: 0.00000546
+    },
+    {
+      txid: '323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d35',
+      vout: 3,
+      scriptSig: {
+        asm:
+          '3045022100fa241bb2de46f68688451bfcae3f165b724e3ccf13b219e7bf2d8d2df7712ad60220353017d6e581a06efce478adfcd2047cea2f92531e283845f3d0a345ef101519[ALL|FORKID] 02cc48ad10516f97e914b8836ff25448d07ad96ebb4704c6a828339880280831bc',
+        hex:
+          '483045022100fa241bb2de46f68688451bfcae3f165b724e3ccf13b219e7bf2d8d2df7712ad60220353017d6e581a06efce478adfcd2047cea2f92531e283845f3d0a345ef101519412102cc48ad10516f97e914b8836ff25448d07ad96ebb4704c6a828339880280831bc'
+      },
+      sequence: 4294967294,
+      address: 'bitcoincash:qppj3euc36x5u6twr5cxrrea2rca53vsfu3dxwr86j',
+      value: 0.00172192
+    }
+  ],
+  vout: [
+    {
+      value: 0,
+      n: 0,
+      scriptPubKey: {
+        asm:
+          'OP_RETURN 5262419 1 1145980243 323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d35 00000000004c4b40 00000000004c4b40',
+        hex:
+          '6a04534c500001010453454e4420323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d350800000000004c4b400800000000004c4b40',
+        type: 'nulldata'
+      }
+    },
+    {
+      value: 0.00000546,
+      n: 1,
+      scriptPubKey: {
+        asm:
+          'OP_DUP OP_HASH160 0a74cf9c0fb3f6dd62c3f5eecd1ed6e1051428e0 OP_EQUALVERIFY OP_CHECKSIG',
+        hex: '76a9140a74cf9c0fb3f6dd62c3f5eecd1ed6e1051428e088ac',
+        reqSigs: 1,
+        type: 'pubkeyhash',
+        addresses: ['bitcoincash:qq98fnuup7eldhtzc067ang76mss29pguqh7qv9eac']
+      }
+    },
+    {
+      value: 0.00000546,
+      n: 2,
+      scriptPubKey: {
+        asm:
+          'OP_DUP OP_HASH160 d4548261e1be0de7e50b7511597799ec4af2b173 OP_EQUALVERIFY OP_CHECKSIG',
+        hex: '76a914d4548261e1be0de7e50b7511597799ec4af2b17388ac',
+        reqSigs: 1,
+        type: 'pubkeyhash',
+        addresses: ['bitcoincash:qr29fqnpuxlqmel9pd63zkthn8ky4u43wv0v7pg5mn']
+      }
+    },
+    {
+      value: 0.00171165,
+      n: 3,
+      scriptPubKey: {
+        asm:
+          'OP_DUP OP_HASH160 d4548261e1be0de7e50b7511597799ec4af2b173 OP_EQUALVERIFY OP_CHECKSIG',
+        hex: '76a914d4548261e1be0de7e50b7511597799ec4af2b17388ac',
+        reqSigs: 1,
+        type: 'pubkeyhash',
+        addresses: ['bitcoincash:qr29fqnpuxlqmel9pd63zkthn8ky4u43wv0v7pg5mn']
+      }
+    }
+  ],
+  hex:
+    '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',
+  blockhash: '000000000000000000292a9c6150fce48e2edd8df346948494fe6249e6e7f63b',
+  confirmations: 163095,
+  time: 1534271330,
+  blocktime: 1534271330
+}
+
+genesisTestOpReturnData01 = {
+  tokenType: 1,
+  txType: 'SEND',
+  tokenId: '323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d35',
+  amounts: ['5000000', '5000000']
+}
+
+genesisTestOpReturnData02 = {
+  tokenType: 1,
+  txType: 'GENESIS',
+  ticker: '',
+  name: '',
+  tokenId: '323a1e35ae0b356316093d20f2d9fbc995d19314b5c0148b78dc8d9c0dab9d35',
+  documentUri: '',
+  documentHash: '',
+  decimals: 0,
+  mintBatonVout: 2,
+  qty: '10000000'
+}
+
 module.exports = {
   nonSlpTxDetails,
   slpTxDetails,
   mockOpReturnData01,
   mockOpReturnData02,
-  mockOpReturnData03
+  mockOpReturnData03,
+  genesisTestInputTx,
+  genesisTestOpReturnData01,
+  genesisTestOpReturnData02
 }

test/unit/transaction-unit.js

@@ -115,5 +115,54 @@ describe('#TransactionLib', () => {
         assert.include(err.message, 'test error')
       }
     })
+
+    // This test case was created in response to a bug. When the input TX
+    // was a Genesis SLP transaction, the inputs of the transaction were not
+    // being hydrated properly.
+    it('should get input details when input is a genesis tx', async () => {
+      // Mock dependencies
+      sandbox
+        .stub(bchjs.Transaction.rawTransaction, 'getTxData')
+        .resolves(mockData.genesisTestInputTx)
+      sandbox
+        .stub(bchjs.Transaction.slpUtils, 'decodeOpReturn')
+        .onCall(0)
+        .resolves(mockData.genesisTestOpReturnData01)
+        .onCall(1)
+        .resolves(mockData.genesisTestOpReturnData02)
+        .onCall(2)
+        .resolves(mockData.genesisTestOpReturnData02)
+        .onCall(3)
+        .resolves(mockData.genesisTestOpReturnData02)
+      sandbox
+        .stub(bchjs.Transaction.slpUtils, 'waterfallValidateTxid')
+        .resolves(true)
+
+      const txid =
+        '874306bda204d3a5dd15e03ea5732cccdca4c33a52df35162cdd64e30ea7f04e'
+
+      const result = await bchjs.Transaction.get(txid)
+      console.log(`result: ${JSON.stringify(result, null, 2)}`)
+
+      // Assert that there are stanardized properties.
+      assert.property(result, 'txid')
+      assert.property(result, 'vin')
+      assert.property(result, 'vout')
+      assert.property(result.vout[0], 'value')
+      assert.property(result.vout[1].scriptPubKey, 'addresses')
+
+      // Assert that added properties exist.
+      assert.property(result.vout[0], 'tokenQty')
+      assert.equal(result.vout[0].tokenQty, null)
+      assert.property(result.vin[0], 'address')
+      assert.property(result.vin[0], 'value')
+      assert.property(result.vin[0], 'tokenQty')
+      assert.property(result, 'isValidSLPTx')
+      assert.equal(result.isValidSLPTx, true)
+
+      // Assert inputs values unique to a Genesis input have the proper values.
+      assert.equal(result.vin[0].tokenQty, 10000000)
+      assert.equal(result.vin[1].tokenQty, null)
+    })
   })
 })