// Public npm libraries
const assert = require('chai').assert
const sinon = require('sinon')
const cloneDeep = require('lodash.clonedeep')

// Unit under test
const SLP = require('../../src/slp/slp')
let uut
let SERVER

const REST_URL = process.env.RESTURL
  ? process.env.RESTURL
  : 'https://bchn.fullstack.cash/v4/'

// Mock data used for unit tests
const mockDataLib = require('./fixtures/slp/mock-utils')
let mockData

// Default to unit tests unless some other value for TEST is passed.
if (!process.env.TEST) process.env.TEST = 'unit'

describe('#SLP Utils', () => {
  let sandbox

  beforeEach(() => {
    // Activate nock if it's inactive.
    // if (!nock.isActive()) nock.activate()

    mockData = cloneDeep(mockDataLib)

    sandbox = sinon.createSandbox()

    uut = new SLP({
      restURL: REST_URL,
      apiToken: process.env.BCHJSTOKEN
    })
    SERVER = uut.restURL
  })

  afterEach(() => {
    // Clean up HTTP mocks.
    // nock.cleanAll() // clear interceptor list.
    // nock.restore()

    sandbox.restore()
  })

  describe('#list', () => {
    it('should list single SLP token by id', async () => {
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockToken })

      const tokenId =
        '4276533bb702e7f8c9afd8aa61ebf016e95011dc3d54e55faa847ac1dd461e84'

      const list = await uut.Utils.list(tokenId)
      // console.log(`list: ${JSON.stringify(list, null, 2)}`)

      assert.equal(list.id, tokenId)
      assert.property(list, 'decimals')
      assert.property(list, 'symbol')
      assert.property(list, 'documentUri')
      assert.property(list, 'name')
    })

    it('should list multiple SLP tokens by array of ids', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'post')
        .resolves({ data: mockData.mockList })

      const tokenIds = [
        '4276533bb702e7f8c9afd8aa61ebf016e95011dc3d54e55faa847ac1dd461e84',
        '8fc284dcbc922f7bb7e2a443dc3af792f52923bba403fcf67ca028c88e89da0e'
      ]

      const list = await uut.Utils.list(tokenIds)
      // console.log(`list: ${JSON.stringify(list, null, 2)}`)

      assert.isArray(list)
      assert.property(list[0], 'symbol')
      assert.property(list[1], 'symbol')
    })
  })

  describe('#balancesForAddress', () => {
    it('should throw an error if input is not a string or array of strings', async () => {
      try {
        const address = 1234

        await uut.Utils.balancesForAddress(address)

        assert.equal(true, false, 'Uh oh. Code path should not end here.')
      } catch (err) {
        // console.log(`Error: `, err)
        assert.include(
          err.message,
          'Input address must be a string or array of strings'
        )
      }
    })

    it('should fetch all balances for address: simpleledger:qzv3zz2trz0xgp6a96lu4m6vp2nkwag0kvyucjzqt9', async () => {
      // Mock the call to the REST API
      if (process.env.TEST === 'unit') {
        sandbox
          .stub(uut.Utils.axios, 'get')
          .resolves({ data: mockData.balancesForAddress })
      }
      // sandbox
      //  .stub(uut.Utils, "balancesForAddress")
      //  .resolves(mockData.balancesForAddress)

      const balances = await uut.Utils.balancesForAddress(
        'simpleledger:qzv3zz2trz0xgp6a96lu4m6vp2nkwag0kvyucjzqt9'
      )
      // console.log(`balances: ${JSON.stringify(balances, null, 2)}`)

      assert.isArray(balances)
      assert.hasAllKeys(balances[0], [
        'tokenId',
        'balanceString',
        'balance',
        'decimalCount',
        'slpAddress'
      ])
    })

    it('should fetch balances for multiple addresses.', async () => {
      const addresses = [
        'simpleledger:qzv3zz2trz0xgp6a96lu4m6vp2nkwag0kvyucjzqt9',
        'simpleledger:qqss4zp80hn6szsa4jg2s9fupe7g5tcg5ucdyl3r57'
      ]

      // Mock the call to the REST API
      if (process.env.TEST === 'unit') {
        sandbox
          .stub(uut.Utils.axios, 'post')
          .resolves({ data: mockData.balancesForAddresses })
      }

      const balances = await uut.Utils.balancesForAddress(addresses)
      // console.log(`balances: ${JSON.stringify(balances, null, 2)}`)

      assert.isArray(balances)
      assert.isArray(balances[0])
      assert.hasAllKeys(balances[0][0], [
        'tokenId',
        'balanceString',
        'balance',
        'decimalCount',
        'slpAddress'
      ])
    })
  })

  describe('#validateTxid', () => {
    it('should validate slp txid', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'post')
        .resolves({ data: mockData.mockIsValidTxid })

      const isValid = await uut.Utils.validateTxid(
        'df808a41672a0a0ae6475b44f272a107bc9961b90f29dc918d71301f24fe92fb'
      )
      assert.deepEqual(isValid, [
        {
          txid:
            'df808a41672a0a0ae6475b44f272a107bc9961b90f29dc918d71301f24fe92fb',
          valid: true
        }
      ])
    })
  })

  describe('#balancesForToken', () => {
    it('should retrieve token balances for a given tokenId', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockBalancesForToken })

      const balances = await uut.Utils.balancesForToken(
        'df808a41672a0a0ae6475b44f272a107bc9961b90f29dc918d71301f24fe92fb'
      )

      assert.hasAnyKeys(balances[0], ['tokenBalance', 'slpAddress'])
    })
  })

  describe('#tokenStats', () => {
    it('should retrieve stats for a given tokenId', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockTokenStats })

      const tokenStats = await uut.Utils.tokenStats(
        'df808a41672a0a0ae6475b44f272a107bc9961b90f29dc918d71301f24fe92fb'
      )

      assert.hasAnyKeys(tokenStats, [
        'circulatingSupply',
        'decimals',
        'documentUri',
        'name',
        'satoshisLockedUp',
        'symbol',
        'tokenId',
        'totalBurned',
        'totalMinted',
        'txnsSinceGenesis',
        'validAddresses',
        'validUtxos'
      ])
    })
  })

  describe('#transactions', () => {
    it('should retrieve transactions for a given tokenId and address', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockTransactions })

      const transactions = await uut.Utils.transactions(
        '495322b37d6b2eae81f045eda612b95870a0c2b6069c58f70cf8ef4e6a9fd43a',
        'simpleledger:qrhvcy5xlegs858fjqf8ssl6a4f7wpstaqnt0wauwu'
      )

      assert.hasAnyKeys(transactions[0], ['txid', 'tokenDetails'])
    })
  })

  describe('#burnTotal', () => {
    it('should retrieve input, output and burn totals', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockBurnTotal })

      const burnTotal = await uut.Utils.burnTotal(
        'c7078a6c7400518a513a0bde1f4158cf740d08d3b5bfb19aa7b6657e2f4160de'
      )
      // console.log(`burnTotal: ${JSON.stringify(burnTotal, null, 2)}`)

      assert.hasAnyKeys(burnTotal, [
        'transactionId',
        'inputTotal',
        'outputTotal',
        'burnTotal'
      ])
    })
  })

  describe('#decodeOpReturn', () => {
    it('should throw an error for a non-string input', async () => {
      try {
        const txid = 53423 // Not a string.

        await uut.Utils.decodeOpReturn(txid)

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        // console.log(`err: ${util.inspect(err)}`)
        assert.include(err.message, 'txid string must be included')
      }
    })

    it('should throw an error for non-SLP transaction', async () => {
      try {
        // Mock the call to the REST API
        sandbox
          .stub(uut.Utils.axios, 'get')
          .resolves({ data: mockData.nonSLPTxDetailsWithoutOpReturn })

        const txid =
          '3793d4906654f648e659f384c0f40b19c8f10c1e9fb72232a9b8edd61abaa1ec'

        await uut.Utils.decodeOpReturn(txid)

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        // console.log(`err: ${util.inspect(err)}`)
        assert.include(err.message, 'scriptpubkey not op_return')
      }
    })

    it('should throw an error for non-SLP transaction with OP_RETURN', async () => {
      try {
        // Mock the call to the REST API
        sandbox
          .stub(uut.Utils.axios, 'get')
          .resolves({ data: mockData.nonSLPTxDetailsWithOpReturn })

        const txid =
          '2ff74c48a5d657cf45f699601990bffbbe7a2a516d5480674cbf6c6a4497908f'

        await uut.Utils.decodeOpReturn(txid)

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        // console.log(`err: ${util.inspect(err)}`)
        assert.include(err.message, 'SLP not in first chunk')
      }
    })

    it('should decode a genesis transaction', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPGenesis })

      const txid =
        'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90'

      const result = await uut.Utils.decodeOpReturn(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.hasAllKeys(result, [
        'tokenType',
        'txType',
        'tokenId',
        'ticker',
        'name',
        'documentUri',
        'documentHash',
        'decimals',
        'mintBatonVout',
        'qty'
      ])
    })

    it('should decode a mint transaction', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPMint })

      const txid =
        '65f21bbfcd545e5eb515e38e861a9dfe2378aaa2c4e458eb9e59e4d40e38f3a4'

      const result = await uut.Utils.decodeOpReturn(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.hasAllKeys(result, [
        'tokenType',
        'txType',
        'tokenId',
        'mintBatonVout',
        'qty'
      ])
    })

    it('should decode a send transaction', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPSend })

      const txid =
        '4f922565af664b6fdf0a1ba3924487344be721b3d8815c62cafc8a51e04a8afa'

      const result = await uut.Utils.decodeOpReturn(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.hasAllKeys(result, ['tokenType', 'txType', 'tokenId', 'amounts'])
    })

    it('should properly decode a Genesis transaction with no minting baton', async () => {
      // Mock the call to the REST API.
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPGenesisNoBaton })

      const txid =
        '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7'

      const data = await uut.Utils.decodeOpReturn(txid)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.equal(data.mintBatonVout, 0)
    })

    it('should decode a send transaction with alternate encoding', async () => {
      // Mock the call to the REST API
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPSendAlt })

      const txid =
        'd94357179775425ebc59c93173bd6dc9854095f090a2eb9dcfe9797398bc8eae'

      const data = await uut.Utils.decodeOpReturn(txid)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.hasAnyKeys(data, [
        'transactionType',
        'txType',
        'tokenId',
        'amounts'
      ])
    })

    // Note: This TX is interpreted as valid by the original decodeOpReturn().
    // Fixing this issue and related issues was the reason for creating the
    // decodeOpReturn2() method using the slp-parser library.
    it('should throw error for invalid SLP transaction', async () => {
      try {
        // Mock the call to the REST API
        sandbox
          .stub(uut.Utils.axios, 'get')
          .resolves({ data: mockData.mockInvalidSlpSend })

        const txid =
          'a60a522cc11ad7011b74e57fbabbd99296e4b9346bcb175dcf84efb737030415'

        await uut.Utils.decodeOpReturn(txid)
        // console.log(`result: ${JSON.stringify(result, null, 2)}`)
      } catch (err) {
        // console.log(`err: `, err)
        assert.include(err.message, 'amount string size not 8 bytes')
      }
    })

    it('should decode a NFT Parent transaction', async () => {
      // Mock the call to the REST API.
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.txDetailsSLPNftGenesis })

      const txid =
        '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4'

      const data = await uut.Utils.decodeOpReturn(txid)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.property(data, 'tokenType')
      assert.property(data, 'txType')
      assert.property(data, 'ticker')
      assert.property(data, 'name')
      assert.property(data, 'tokenId')
      assert.property(data, 'documentUri')
      assert.property(data, 'documentHash')
      assert.property(data, 'decimals')
      assert.property(data, 'mintBatonVout')
      assert.property(data, 'qty')

      assert.equal(data.tokenType, 129)
      assert.equal(data.mintBatonVout, 2)
      assert.equal(data.qty, 1)
    })

    // it("should decode a NFT Child transaction", async () => {
    //   // Mock the call to the REST API.
    //   // sandbox
    //   //   .stub(uut.Utils.axios, "get")
    //   //   .resolves({ data: mockData.txDetailsSLPNftGenesis })
    //
    //   const txid =
    //     "3de3766b10506c9156533f1639979e49d1884521543c13e4af73647df1ed3f76"
    //
    //   const data = await uut.Utils.decodeOpReturn(txid)
    //   console.log(`data: ${JSON.stringify(data, null, 2)}`)
    //
    //   // assert.property(data, "tokenType")
    //   // assert.property(data, "txType")
    //   // assert.property(data, "ticker")
    //   // assert.property(data, "name")
    //   // assert.property(data, "tokenId")
    //   // assert.property(data, "documentUri")
    //   // assert.property(data, "documentHash")
    //   // assert.property(data, "decimals")
    //   // assert.property(data, "mintBatonVout")
    //   // assert.property(data, "qty")
    //   //
    //   // assert.equal(data.tokenType, 129)
    //   // assert.equal(data.mintBatonVout, 2)
    //   // assert.equal(data.qty, 1)
    // })
  })

  describe('#tokenUtxoDetails', () => {
    it('should throw error if input is not an array.', async () => {
      try {
        await uut.Utils.tokenUtxoDetails('test')

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        assert.include(
          err.message,
          'Input must be an array',
          'Expected error message.'
        )
      }
    })

    it('should throw error if utxo does not have satoshis or value property.', async () => {
      try {
        const utxos = [
          {
            txid:
              'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
            vout: 3,
            amount: 0.00002015,
            satoshis: 2015,
            height: 594892,
            confirmations: 5
          },
          {
            txid:
              'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
            vout: 2,
            amount: 0.00000546,
            height: 594892,
            confirmations: 5
          }
        ]

        await uut.Utils.tokenUtxoDetails(utxos)

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        assert.include(
          err.message,
          'utxo 1 does not have a satoshis or value property',
          'Expected error message.'
        )
      }
    })

    it('should throw error if utxo does not have txid or tx_hash property.', async () => {
      try {
        const utxos = [
          {
            txid:
              'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
            vout: 3,
            amount: 0.00002015,
            satoshis: 2015,
            height: 594892,
            confirmations: 5
          },
          {
            vout: 2,
            amount: 0.00000546,
            satoshis: 546,
            height: 594892,
            confirmations: 5
          }
        ]

        await uut.Utils.tokenUtxoDetails(utxos)

        assert.equal(true, false, 'Unexpected result.')
      } catch (err) {
        assert.include(
          err.message,
          'utxo 1 does not have a txid or tx_hash property',
          'Expected error message.'
        )
      }
    })

    // // This captures an important corner-case. When an SLP token is created, the
    // // change UTXO will contain the same SLP txid, but it is not an SLP UTXO.
    it('should return details on minting baton from genesis transaction', async () => {
      // Mock the call to REST API
      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
          valid: true
        }
      ])

      // Stub the calls to decodeOpReturn.
      sandbox.stub(uut.Utils, 'decodeOpReturn').resolves({
        tokenType: 1,
        txType: 'GENESIS',
        ticker: 'SLPSDK',
        name: 'SLP SDK example using BITBOX',
        tokenId:
          'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
        documentUri: 'developer.bitcoin.com',
        documentHash: '',
        decimals: 8,
        mintBatonVout: 2,
        qty: '50700000000'
      })

      const utxos = [
        {
          txid:
            'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
          vout: 3,
          amount: 0.00002015,
          satoshis: 2015,
          height: 594892,
          confirmations: 5
        },
        {
          txid:
            'bd158c564dd4ef54305b14f44f8e94c44b649f246dab14bcb42fb0d0078b8a90',
          vout: 2,
          amount: 0.00000546,
          satoshis: 546,
          height: 594892,
          confirmations: 5
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      // assert.equal(data[0], false, "Change UTXO marked as false.")
      assert.property(data[0], 'txid')
      assert.property(data[0], 'vout')
      assert.property(data[0], 'amount')
      assert.property(data[0], 'satoshis')
      assert.property(data[0], 'height')
      assert.property(data[0], 'confirmations')
      assert.property(data[0], 'isValid')
      assert.equal(data[0].isValid, false)

      assert.property(data[1], 'txid')
      assert.property(data[1], 'vout')
      assert.property(data[1], 'amount')
      assert.property(data[1], 'satoshis')
      assert.property(data[1], 'height')
      assert.property(data[1], 'confirmations')
      assert.property(data[1], 'utxoType')
      assert.property(data[1], 'tokenId')
      assert.property(data[1], 'tokenTicker')
      assert.property(data[1], 'tokenName')
      assert.property(data[1], 'tokenDocumentUrl')
      assert.property(data[1], 'tokenDocumentHash')
      assert.property(data[1], 'decimals')
      assert.property(data[1], 'isValid')
      assert.equal(data[1].isValid, true)
    })

    it('should return details for a MINT token utxo', async () => {
      // Mock the call to REST API

      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .resolves({
          tokenType: 1,
          txType: 'MINT',
          tokenId:
            '38e97c5d7d3585a2cbf3f9580c82ca33985f9cb0845d4dcce220cb709f9538b0',
          mintBatonVout: 2,
          qty: '1000000000000'
        })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'PSF',
          name: 'Permissionless Software Foundation',
          tokenId:
            '38e97c5d7d3585a2cbf3f9580c82ca33985f9cb0845d4dcce220cb709f9538b0',
          documentUri: 'psfoundation.cash',
          documentHash: '',
          decimals: 8,
          mintBatonVout: 2,
          qty: '1988209163133'
        })

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            'cf4b922d1e1aa56b52d752d4206e1448ea76c3ebe69b3b97d8f8f65413bd5c76',
          valid: true
        }
      ])

      const utxos = [
        {
          txid:
            'cf4b922d1e1aa56b52d752d4206e1448ea76c3ebe69b3b97d8f8f65413bd5c76',
          vout: 1,
          amount: 0.00000546,
          satoshis: 546,
          height: 600297,
          confirmations: 76
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.property(data[0], 'txid')
      assert.property(data[0], 'vout')
      assert.property(data[0], 'amount')
      assert.property(data[0], 'satoshis')
      assert.property(data[0], 'height')
      assert.property(data[0], 'confirmations')
      assert.property(data[0], 'utxoType')
      assert.property(data[0], 'transactionType')
      assert.property(data[0], 'tokenId')
      assert.property(data[0], 'tokenTicker')
      assert.property(data[0], 'tokenName')
      assert.property(data[0], 'tokenDocumentUrl')
      assert.property(data[0], 'tokenDocumentHash')
      assert.property(data[0], 'decimals')
      assert.property(data[0], 'mintBatonVout')
      assert.property(data[0], 'tokenQty')
      assert.property(data[0], 'isValid')
      assert.equal(data[0].isValid, true)
    })

    it('should return details for a simple SEND SLP token utxo', async () => {
      // Mock the call to REST API
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          amounts: ['200000000', '99887500000000']
        })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'TOK-CH',
          name: 'TokyoCash',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          documentUri: '',
          documentHash: '',
          decimals: 8,
          mintBatonVout: 0,
          qty: '2100000000000000'
        })

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          valid: true
        }
      ])

      const utxos = [
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          vout: 1,
          amount: 0.00000546,
          satoshis: 546,
          height: 596089,
          confirmations: 748
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.property(data[0], 'txid')
      assert.property(data[0], 'vout')
      assert.property(data[0], 'amount')
      assert.property(data[0], 'satoshis')
      assert.property(data[0], 'height')
      assert.property(data[0], 'confirmations')
      assert.property(data[0], 'utxoType')
      assert.property(data[0], 'tokenId')
      assert.property(data[0], 'tokenTicker')
      assert.property(data[0], 'tokenName')
      assert.property(data[0], 'tokenDocumentUrl')
      assert.property(data[0], 'tokenDocumentHash')
      assert.property(data[0], 'decimals')
      assert.property(data[0], 'tokenQty')
      assert.property(data[0], 'isValid')
      assert.equal(data[0].isValid, true)
    })

    it('should handle BCH and SLP utxos in the same TX', async () => {
      // Mock external dependencies.
      sandbox
        .stub(uut.Utils, 'validateTxid')
        .resolves(mockData.mockDualValidation)

      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            'dd84ca78db4d617221b58eabc6667af8fe2f7eadbfcc213d35be9f1b419beb8d',
          amounts: ['1', '5']
        })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            'dd84ca78db4d617221b58eabc6667af8fe2f7eadbfcc213d35be9f1b419beb8d',
          amounts: ['1', '5']
        })
        .onCall(2)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'TAP',
          name: 'Thoughts and Prayers',
          tokenId:
            'dd84ca78db4d617221b58eabc6667af8fe2f7eadbfcc213d35be9f1b419beb8d',
          documentUri: '',
          documentHash: '',
          decimals: 0,
          mintBatonVout: 2,
          qty: '1000000'
        })

      const utxos = [
        {
          txid:
            'd56a2b446d8149c39ca7e06163fe8097168c3604915f631bc58777d669135a56',
          vout: 3,
          value: '6816',
          height: 606848,
          confirmations: 13,
          satoshis: 6816
        },
        {
          txid:
            'd56a2b446d8149c39ca7e06163fe8097168c3604915f631bc58777d669135a56',
          vout: 2,
          value: '546',
          height: 606848,
          confirmations: 13,
          satoshis: 546
        }
      ]

      const result = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.equal(result.length, 2)

      assert.property(result[0], 'txid')
      assert.property(result[0], 'vout')
      assert.property(result[0], 'value')
      assert.property(result[0], 'satoshis')
      assert.property(result[0], 'height')
      assert.property(result[0], 'confirmations')
      assert.property(result[0], 'isValid')
      assert.equal(result[0].isValid, false)

      assert.equal(result[1].isValid, true)
      assert.equal(result[1].utxoType, 'token')
      assert.equal(result[1].transactionType, 'send')
    })

    it('should handle problematic utxos', async () => {
      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .throws({ message: 'scriptpubkey not op_return' })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            'f05faf13a29c7f5e54ab921750aafb6afaa953db863bd2cf432e918661d4132f',
          amounts: ['5000000', '395010942']
        })
        .onCall(2)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'AUDC',
          name: 'AUD Coin',
          tokenId:
            'f05faf13a29c7f5e54ab921750aafb6afaa953db863bd2cf432e918661d4132f',
          documentUri: 'audcoino@gmail.com',
          documentHash: '',
          decimals: 6,
          mintBatonVout: 0,
          qty: '2000000000000000000'
        })

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            '67fd3c7c3a6eb0fea9ab311b91039545086220f7eeeefa367fa28e6e43009f19',
          valid: true
        }
      ])

      const utxos = [
        {
          txid:
            '0e3a217fc22612002031d317b4cecd9b692b66b52951a67b23c43041aefa3959',
          vout: 0,
          amount: 0.00018362,
          satoshis: 18362,
          height: 613483,
          confirmations: 124
        },
        {
          txid:
            '67fd3c7c3a6eb0fea9ab311b91039545086220f7eeeefa367fa28e6e43009f19',
          vout: 1,
          amount: 0.00000546,
          satoshis: 546,
          height: 612075,
          confirmations: 1532
        }
      ]

      const result = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.equal(result.length, 2)

      assert.property(result[0], 'txid')
      assert.property(result[0], 'vout')
      assert.property(result[0], 'amount')
      assert.property(result[0], 'satoshis')
      assert.property(result[0], 'height')
      assert.property(result[0], 'confirmations')
      assert.property(result[0], 'isValid')
      assert.equal(result[0].isValid, false)

      assert.equal(result[1].isValid, true)
      assert.equal(result[1].utxoType, 'token')
      assert.equal(result[1].transactionType, 'send')
    })

    it('should return isValid=false for BCH-only UTXOs', async () => {
      // Mock live network calls

      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .throws(new Error('scriptpubkey not op_return'))

      const utxos = [
        {
          txid:
            'a937f792c7c9eb23b4f344ce5c233d1ac0909217d0a504d71e6b1e4efb864a3b',
          vout: 0,
          amount: 0.00001,
          satoshis: 1000,
          confirmations: 0,
          ts: 1578424704
        },
        {
          txid:
            '53fd141c2e999e080a5860887441a2c45e9cbe262027e2bd2ac998fc76e43c44',
          vout: 0,
          amount: 0.00001,
          satoshis: 1000,
          confirmations: 0,
          ts: 1578424634
        }
      ]

      const result = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)

      assert.property(result[0], 'txid')
      assert.property(result[0], 'vout')
      assert.property(result[0], 'amount')
      assert.property(result[0], 'satoshis')
      assert.property(result[0], 'confirmations')
      assert.property(result[0], 'isValid')
      assert.equal(result[0].isValid, false)

      assert.property(result[1], 'txid')
      assert.property(result[1], 'vout')
      assert.property(result[1], 'amount')
      assert.property(result[1], 'satoshis')
      assert.property(result[1], 'confirmations')
      assert.property(result[1], 'isValid')
      assert.equal(result[1].isValid, false)
    })

    it('should decode a Genesis transaction', async () => {
      const slpData = {
        tokenType: 1,
        txType: 'GENESIS',
        ticker: 'SLPTEST',
        name: 'SLP Test Token',
        tokenId:
          'd2ec6abff5d1c8ed9ab5db6d140dcaebb813463e42933a4a4db171e7222a0954',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 8,
        mintBatonVout: 2,
        qty: '10000000000'
      }

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox.stub(uut.Utils, 'decodeOpReturn').resolves(slpData)

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            'd2ec6abff5d1c8ed9ab5db6d140dcaebb813463e42933a4a4db171e7222a0954',
          valid: true
        }
      ])

      const utxos = [
        {
          txid:
            'd2ec6abff5d1c8ed9ab5db6d140dcaebb813463e42933a4a4db171e7222a0954',
          vout: 1,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            'd2ec6abff5d1c8ed9ab5db6d140dcaebb813463e42933a4a4db171e7222a0954',
          vout: 2,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            'd2ec6abff5d1c8ed9ab5db6d140dcaebb813463e42933a4a4db171e7222a0954',
          vout: 3,
          value: '12178',
          confirmations: 0,
          satoshis: 12178
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].utxoType, 'token')
      assert.equal(data[0].tokenQty, 100)
      assert.equal(data[0].isValid, true)
      assert.equal(data[0].tokenType, 1)

      assert.equal(data[1].utxoType, 'minting-baton')
      assert.equal(data[1].isValid, true)
      assert.equal(data[1].tokenType, 1)

      assert.equal(data[2].isValid, false)
    })

    it('should decode a Mint transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 1,
        txType: 'MINT',
        tokenId:
          '9d35c1803ed3ab8bd23c198b027f7b3b530586494dc265de6391b74a6b090136',
        mintBatonVout: 2,
        qty: '10000000000'
      }

      const genesisData = {
        tokenType: 1,
        txType: 'GENESIS',
        ticker: 'SLPTEST',
        name: 'SLP Test Token',
        tokenId:
          '9d35c1803ed3ab8bd23c198b027f7b3b530586494dc265de6391b74a6b090136',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 8,
        mintBatonVout: 2,
        qty: '10000000000'
      }

      const stubValid = [
        {
          txid:
            '880587f01e3112e779c0fdf1b9b859c242a28e56ead85483eeedcaa52f051a04',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(genesisData)
        .onCall(2)
        .resolves(slpData)
        .onCall(3)
        .resolves(genesisData)
        .onCall(4)
        .resolves(slpData)

      // Stub the call to validateTxid
      sandbox
        .stub(uut.Utils, 'validateTxid')
        .resolves(stubValid)
        .onCall(1)
        .resolves(stubValid)

      const utxos = [
        {
          txid:
            '880587f01e3112e779c0fdf1b9b859c242a28e56ead85483eeedcaa52f051a04',
          vout: 1,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '880587f01e3112e779c0fdf1b9b859c242a28e56ead85483eeedcaa52f051a04',
          vout: 2,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '880587f01e3112e779c0fdf1b9b859c242a28e56ead85483eeedcaa52f051a04',
          vout: 3,
          value: '10552',
          confirmations: 0,
          satoshis: 10552
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].utxoType, 'token')
      assert.equal(data[0].tokenQty, 100)
      assert.equal(data[0].isValid, true)
      assert.equal(data[0].tokenType, 1)

      assert.equal(data[1].utxoType, 'minting-baton')
      assert.equal(data[1].isValid, true)
      assert.equal(data[1].tokenType, 1)

      assert.equal(data[2].isValid, false)
    })

    it('should decode a NFT Group Genesis transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 129,
        txType: 'GENESIS',
        ticker: 'NFTTT',
        name: 'NFT Test Token',
        tokenId:
          '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 0,
        mintBatonVout: 2,
        qty: '1'
      }

      const stubValid = [
        {
          txid:
            '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(slpData)
        .onCall(2)
        .resolves(slpData)
        .onCall(3)
        .resolves(slpData)
        .onCall(4)
        .resolves(slpData)

      // Stub the call to validateTxid
      sandbox
        .stub(uut.Utils, 'validateTxid')
        .resolves(stubValid)
        .onCall(1)
        .resolves(stubValid)
        .onCall(2)
        .resolves(stubValid)

      const utxos = [
        {
          txid:
            '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4',
          vout: 3,
          value: '15620',
          height: 638207,
          confirmations: 3,
          satoshis: 15620
        },
        {
          txid:
            '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4',
          vout: 2,
          value: '546',
          height: 638207,
          confirmations: 3,
          satoshis: 546
        },
        {
          txid:
            '4ef6eb92950a13a69e97c2c02c7967d806aa874c0e2a6b5546a8880f2cd14bc4',
          vout: 1,
          value: '546',
          height: 638207,
          confirmations: 3,
          satoshis: 546
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].isValid, false)

      assert.equal(data[1].utxoType, 'minting-baton')
      assert.equal(data[1].isValid, true)
      assert.equal(data[1].tokenType, 129)

      assert.equal(data[2].utxoType, 'token')
      assert.equal(data[2].tokenType, 129)
      assert.equal(data[1].isValid, true)
    })

    it('should decode a NFT Group Mint transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 129,
        txType: 'MINT',
        tokenId:
          'eee4b82e4bb7113eca433829144363fc45f110693c286494fbf5b5c8043cc981',
        mintBatonVout: 2,
        qty: '10'
      }

      const genesisData = {
        tokenType: 129,
        txType: 'GENESIS',
        ticker: 'NFTTT',
        name: 'NFT Test Token',
        tokenId:
          'eee4b82e4bb7113eca433829144363fc45f110693c286494fbf5b5c8043cc981',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 0,
        mintBatonVout: 2,
        qty: '1'
      }

      const stubValid = [
        {
          txid:
            '35846676e7514658bbd2fd60b1f0d4d86195908f6b2de5328d54c8e4a2d05919',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(slpData)
        .onCall(2)
        .resolves(genesisData)
        .onCall(3)
        .resolves(slpData)
        .onCall(4)
        .resolves(genesisData)

      // Stub the call to validateTxid
      sandbox
        .stub(uut.Utils, 'validateTxid')
        .resolves(stubValid)
        .onCall(1)
        .resolves(stubValid)
        .onCall(2)
        .resolves(stubValid)

      const utxos = [
        {
          txid:
            '35846676e7514658bbd2fd60b1f0d4d86195908f6b2de5328d54c8e4a2d05919',
          vout: 3,
          value: '15620',
          height: 638207,
          confirmations: 3,
          satoshis: 15620
        },
        {
          txid:
            '35846676e7514658bbd2fd60b1f0d4d86195908f6b2de5328d54c8e4a2d05919',
          vout: 2,
          value: '546',
          height: 638207,
          confirmations: 3,
          satoshis: 546
        },
        {
          txid:
            '35846676e7514658bbd2fd60b1f0d4d86195908f6b2de5328d54c8e4a2d05919',
          vout: 1,
          value: '546',
          height: 638207,
          confirmations: 3,
          satoshis: 546
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].isValid, false)

      assert.equal(data[1].utxoType, 'minting-baton')
      assert.equal(data[1].tokenType, 129)
      assert.equal(data[1].isValid, true)

      assert.equal(data[2].utxoType, 'token')
      assert.equal(data[2].tokenType, 129)
      assert.equal(data[2].isValid, true)
    })

    it('should decode a NFT Child Genesis transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 65,
        txType: 'GENESIS',
        ticker: 'NFTC',
        name: 'NFT Child',
        tokenId:
          '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 0,
        mintBatonVout: 0,
        qty: '1'
      }

      const stubValid = [
        {
          txid:
            '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(slpData)

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves(stubValid)

      const utxos = [
        {
          txid:
            '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
          vout: 1,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
          vout: 2,
          value: '13478',
          confirmations: 0,
          satoshis: 13478
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].utxoType, 'token')
      assert.equal(data[0].tokenType, 65)
      assert.equal(data[0].isValid, true)

      assert.equal(data[1].isValid, false)
    })

    it('should decode an NFT Child Send transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 65,
        txType: 'SEND',
        tokenId:
          '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
        amounts: ['1']
      }

      const genesisData = {
        tokenType: 65,
        txType: 'GENESIS',
        ticker: 'NFTC',
        name: 'NFT Child',
        tokenId:
          '9b6db26b64aedcedc0bd9a3037b29b3598573ec5cea99eec03faa838616cd683',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 0,
        mintBatonVout: 0,
        qty: '1'
      }

      const stubValid = [
        {
          txid:
            '6d68a7ffbb63ef851c43025f801a1d365cddda50b00741bca022c743d74cd61a',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(genesisData)
        .onCall(2)
        .resolves(slpData)

      // Stub the call to validateTxid
      sandbox.stub(uut.Utils, 'validateTxid').resolves(stubValid)

      const utxos = [
        {
          txid:
            '6d68a7ffbb63ef851c43025f801a1d365cddda50b00741bca022c743d74cd61a',
          vout: 1,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '6d68a7ffbb63ef851c43025f801a1d365cddda50b00741bca022c743d74cd61a',
          vout: 2,
          value: '12136',
          confirmations: 0,
          satoshis: 12136
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].utxoType, 'token')
      assert.equal(data[0].transactionType, 'send')
      assert.equal(data[0].tokenType, 65)
      assert.equal(data[0].isValid, true)

      assert.equal(data[1].isValid, false)
    })

    it('should decode an NFT Group Send transaction', async () => {
      // Define stubbed data.
      const slpData = {
        tokenType: 129,
        txType: 'SEND',
        tokenId:
          'eee4b82e4bb7113eca433829144363fc45f110693c286494fbf5b5c8043cc981',
        amounts: ['1', '8']
      }

      const genesisData = {
        tokenType: 129,
        txType: 'GENESIS',
        ticker: 'NFTTT',
        name: 'NFT Test Token',
        tokenId:
          'eee4b82e4bb7113eca433829144363fc45f110693c286494fbf5b5c8043cc981',
        documentUri: 'https://FullStack.cash',
        documentHash: '',
        decimals: 0,
        mintBatonVout: 2,
        qty: '1'
      }

      const stubValid = [
        {
          txid:
            '57cc47c265ce878679e95e2cec510d8a1a9840f5c62feb4743cc5947d57d9766',
          valid: true
        }
      ]

      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .resolves(slpData)
        .onCall(1)
        .resolves(genesisData)
        .onCall(2)
        .resolves(slpData)
        .onCall(3)
        .resolves(genesisData)
        .onCall(4)
        .resolves(slpData)

      // Stub the call to validateTxid
      sandbox
        .stub(uut.Utils, 'validateTxid')
        .resolves(stubValid)
        .onCall(1)
        .resolves(stubValid)

      const utxos = [
        {
          txid:
            '57cc47c265ce878679e95e2cec510d8a1a9840f5c62feb4743cc5947d57d9766',
          vout: 1,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '57cc47c265ce878679e95e2cec510d8a1a9840f5c62feb4743cc5947d57d9766',
          vout: 2,
          value: '546',
          confirmations: 0,
          satoshis: 546
        },
        {
          txid:
            '57cc47c265ce878679e95e2cec510d8a1a9840f5c62feb4743cc5947d57d9766',
          vout: 3,
          value: '10794',
          confirmations: 0,
          satoshis: 10794
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.isArray(data)

      assert.equal(data[0].utxoType, 'token')
      assert.equal(data[0].transactionType, 'send')
      assert.equal(data[0].tokenType, 129)
      assert.equal(data[0].isValid, true)

      assert.equal(data[1].utxoType, 'token')
      assert.equal(data[1].transactionType, 'send')
      assert.equal(data[1].tokenType, 129)
      assert.equal(data[1].isValid, true)

      assert.equal(data[2].isValid, false)
    })

    it('should return null value when 429 recieved', async () => {
      const utxos = [
        {
          height: 654522,
          tx_hash:
            '072a1e2c2d5f1309bf4eef7f88684e4ecd544a903b386b07f3e04b91b13d8af1',
          tx_pos: 0,
          value: 6999,
          satoshis: 6999,
          txid:
            '072a1e2c2d5f1309bf4eef7f88684e4ecd544a903b386b07f3e04b91b13d8af1',
          vout: 0
        },
        {
          height: 654522,
          tx_hash:
            'a72db6a0883ecb8e379f317231b2571e41e041b7b1107e3e54c2e0b3386ac6ca',
          tx_pos: 1,
          value: 546,
          satoshis: 546,
          txid:
            'a72db6a0883ecb8e379f317231b2571e41e041b7b1107e3e54c2e0b3386ac6ca',
          vout: 1
        }
      ]

      sandbox.stub(uut.Utils, 'decodeOpReturn').rejects({
        error:
          'Too many requests. Your limits are currently 3 requests per minute. Increase rate limits at https://fullstack.cash'
      })

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      // Values should be 'null' to signal that a determination could not be made
      // due to a throttling issue.
      assert.equal(data[0].isValid, null)
      assert.equal(data[1].isValid, null)
    })

    // it("should handle a dust attack", async () => {
    it('should handle dust attack UTXOs', async () => {
      // Mock external dependencies.
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .rejects(new Error('lokad id wrong size'))

      const utxos = [
        {
          height: 655965,
          tx_hash:
            'a675af87dcd8d39be782737aa52e0076b52eb2f5ce355ffcb5567a64dd96b77e',
          tx_pos: 151,
          value: 547,
          satoshis: 547,
          txid:
            'a675af87dcd8d39be782737aa52e0076b52eb2f5ce355ffcb5567a64dd96b77e',
          vout: 151,
          address: 'bitcoincash:qq4dw3sm8qvglspy6w2qg0u2ugsy9zcfcqrpeflwww',
          hdIndex: 11
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.equal(data[0].isValid, false)
    })

    it('should invalidate a malformed SLP OP_RETURN', async () => {
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .rejects(new Error('trailing data'))

      const utxos = [
        // Malformed SLP tx
        {
          note: 'Malformed SLP tx',
          tx_hash:
            'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a',
          tx_pos: 1,
          value: 546
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      assert.equal(data[0].isValid, false)
    })

    it('should use backup validators when regular SLPDB returns null', async () => {
      // Mock the call to REST API
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          amounts: ['200000000', '99887500000000']
        })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'TOK-CH',
          name: 'TokyoCash',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          documentUri: '',
          documentHash: '',
          decimals: 8,
          mintBatonVout: 0,
          qty: '2100000000000000'
        })

      // Force default SLPDB to return 'null', which should trigger usage of the
      // backup whitelist-SLPDB.
      sandbox.stub(uut.Utils, 'validateTxid').resolves([
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          valid: null
        }
      ])

      // Force the token UTXO to be in the whitelist.
      uut.Utils.whitelist = mockData.whitelist

      // Mock the response from the whitelist-SLPDB.
      sandbox.stub(uut.Utils, 'validateTxid3').resolves([
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          valid: null
        }
      ])

      // Mock the response from slp-api
      sandbox.stub(uut.Utils, 'validateTxid2').resolves({
        txid:
          'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
        isValid: true,
        msg: ''
      })

      const utxos = [
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          vout: 1,
          amount: 0.00000546,
          satoshis: 546,
          height: 596089,
          confirmations: 748
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      // The UTXO should have been validated by the third validation source.
      assert.equal(data[0].isValid, true)
    })

    it('should handle SLPDB returning null corner case', async () => {
      // Mock the call to REST API
      // Stub the calls to decodeOpReturn.
      sandbox
        .stub(uut.Utils, 'decodeOpReturn')
        .onCall(0)
        .resolves({
          tokenType: 1,
          txType: 'SEND',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          amounts: ['200000000', '99887500000000']
        })
        .onCall(1)
        .resolves({
          tokenType: 1,
          txType: 'GENESIS',
          ticker: 'TOK-CH',
          name: 'TokyoCash',
          tokenId:
            '497291b8a1dfe69c8daea50677a3d31a5ef0e9484d8bebb610dac64bbc202fb7',
          documentUri: '',
          documentHash: '',
          decimals: 8,
          mintBatonVout: 0,
          qty: '2100000000000000'
        })

      // Force default SLPDB to return 'null' corner case.
      sandbox.stub(uut.Utils, 'validateTxid').resolves([null])

      // Mock the response from slp-api
      sandbox.stub(uut.Utils, 'validateTxid2').resolves({
        txid:
          'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
        isValid: true,
        msg: ''
      })

      const utxos = [
        {
          txid:
            'fde117b1f176b231e2fa9a6cb022e0f7c31c288221df6bcb05f8b7d040ca87cb',
          vout: 1,
          amount: 0.00000546,
          satoshis: 546,
          height: 596089,
          confirmations: 748
        }
      ]

      const data = await uut.Utils.tokenUtxoDetails(utxos)
      // console.log(`data: ${JSON.stringify(data, null, 2)}`)

      // The UTXO should have been validated by the third validation source.
      assert.equal(data[0].isValid, true)
    })
  })

  describe('#txDetails', () => {
    it('should throw an error if txid is not included', async () => {
      try {
        await uut.Utils.txDetails()
      } catch (err) {
        assert.include(
          err.message,
          'txid string must be included',
          'Expected error message.'
        )
      }
    })

    it('should throw error for non-existent txid', async () => {
      try {
        // Mock the call to the REST API
        if (process.env.TEST === 'unit') {
          sandbox
            .stub(uut.Utils.axios, 'get')
            // .resolves({ data: mockData.nonSLPTxDetailsWithoutOpReturn })
            .throws({ error: 'TXID not found' })
        }

        const txid = 'd284e71227ec89f714b964d8eda595be6392bebd2fac46082bc5a9ce6fb7b33e'

        await uut.Utils.txDetails(txid)
        // console.log(`result: ${JSON.stringify(result, null, 2)}`)

        assert.fail('Unexpected result')
      } catch (err) {
        // console.log(`err: `, err)
        assert.include(err.error, 'TXID not found', 'Expected error message.')
      }
    })

    it('should return details for an SLP txid', async () => {
      // Mock the call to the REST API
      if (process.env.TEST === 'unit') {
        sandbox
          .stub(uut.Utils.axios, 'get')
          .resolves({ data: mockData.mockTxDetails })
      }

      const txid = '9dbaaafc48c49a21beabada8de632009288a2cd52eecefd0c00edcffca9955d0'

      const result = await uut.Utils.txDetails(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.hasAnyKeys(result, [
        'txid',
        'version',
        'locktime',
        'vin',
        'vout',
        'blockhash',
        'blockheight',
        'confirmations',
        'time',
        'blocktime',
        'valueOut',
        'size',
        'valueIn',
        'fees',
        'tokenInfo',
        'tokenIsValid'
      ])
    })
  })

  describe('#hydrateUtxos', () => {
    it('should throw an error if input is not an array', async () => {
      try {
        const utxos = 1234

        await uut.Utils.hydrateUtxos(utxos)

        assert.equal(true, false, 'Uh oh. Code path should not end here.')
      } catch (err) {
        // console.log(`Error: `, err)
        assert.include(err.message, 'Input must be an array.')
      }
    })
  })

  describe('#validateTxid2', () => {
    it('should throw an error if the input is an array', async () => {
      try {
        const txid = [
          'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'
        ]

        await uut.Utils.validateTxid2(txid)

        assert.equal(true, false, 'Unexpected result')
      } catch (err) {
        // console.log("err: ", err)
        assert.include(err.message, 'txid must be 64 character string')
      }
    })

    it('should throw an error for a malformed txid', async () => {
      try {
        const txid =
          'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783'

        await uut.Utils.validateTxid2(txid)

        assert.equal(true, false, 'Unexpected result')
      } catch (err) {
        // console.log("err: ", err)
        assert.include(err.message, 'txid must be 64 character string')
      }
    })

    it('should invalidate a known invalid TXID', async () => {
      const txid =
        'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'

      // Mock live network calls.
      sandbox.stub(uut.Utils.axios, 'get').resolves({
        data: {
          txid: txid,
          isValid: false,
          msg: ''
        }
      })

      const result = await uut.Utils.validateTxid2(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.property(result, 'txid')
      assert.equal(result.txid, txid)

      assert.property(result, 'isValid')
      assert.equal(result.isValid, false)
    })

    it('should validate a known valid TXID', async () => {
      const txid =
        '3a4b628cbcc183ab376d44ce5252325f042268307ffa4a53443e92b6d24fb488'

      // Mock live network calls.
      sandbox.stub(uut.Utils.axios, 'get').resolves({
        data: {
          txid: txid,
          isValid: true,
          msg: ''
        }
      })

      const result = await uut.Utils.validateTxid2(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.property(result, 'txid')
      assert.equal(result.txid, txid)

      assert.property(result, 'isValid')
      assert.equal(result.isValid, true)
    })

    // slp-validate can take a long time. bch-api cuts it off if it fails to
    // return is less than 10 seconds. This test case handle this situation.
    it('should handle timeout errors', async () => {
      try {
        const txid =
          'eacb1085dfa296fef6d4ae2c0f4529a1bef096dd2325bdcc6dcb5241b3bdb579'

        // Mock live network calls.
        sandbox.stub(uut.Utils.axios, 'get').rejects({
          error:
            'Network error: Could not communicate with full node or other external service.'
        })

        await uut.Utils.validateTxid2(txid)

        assert.equal(true, false, 'Unexpected result')
      } catch (err) {
        // console.log("err: ", err)
        assert.include(err.message, 'slp-validate timed out')
      }
    })
  })

  describe('#validateTxid', () => {
    it('should invalidate a known invalid TXID', async () => {
      const txid =
        'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'

      // Mock live network calls.
      sandbox.stub(uut.Utils.axios, 'post').resolves({
        data: mockData.mockValidateTxid3Invalid
      })

      const result = await uut.Utils.validateTxid(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)

      assert.property(result[0], 'txid')
      assert.equal(result[0].txid, txid)

      assert.property(result[0], 'valid')
      assert.equal(result[0].valid, null)
    })
    /*
    it("should handle a mix of valid, invalid, and non-SLP txs", async () => {
      const txids = [
        // Malformed SLP tx
        "f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a",
        // Normal TX (non-SLP)
        "01cdaec2f8b311fc2d6ecc930247bd45fa696dc204ab684596e281fe1b06c1f0",
        // Valid PSF SLP tx
        "daf4d8b8045e7a90b7af81bfe2370178f687da0e545511bce1c9ae539eba5ffd",
        // Valid SLP token not in whitelist
        "3a4b628cbcc183ab376d44ce5252325f042268307ffa4a53443e92b6d24fb488"
      ]

      const result = await uut.Utils.validateTxid(txids)
      console.log(`result: ${JSON.stringify(result, null, 2)}`)
    })
*/
  })

  describe('#getWhitelist', () => {
    it('should return the list', async () => {
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.mockWhitelist })

      const result = await uut.Utils.getWhitelist()

      assert.isArray(result)
      assert.property(result[0], 'name')
      assert.property(result[1], 'tokenId')
    })

    it('catches and throws an error', async () => {
      try {
        sandbox.stub(uut.Utils.axios, 'get').rejects({
          error:
            'Network error: Could not communicate with full node or other external service.'
        })

        await uut.Utils.getWhitelist()

        assert.fail('Unexpected result')
      } catch (err) {
        console.log('err: ', err)
        assert.include(err.error, 'Network error')
      }
    })
  })

  describe('#validateTxid3', () => {
    it('should invalidate a known invalid TXID', async () => {
      const txid =
        'f7e5199ef6669ad4d078093b3ad56e355b6ab84567e59ad0f08a5ad0244f783a'

      // Mock live network calls.
      sandbox.stub(uut.Utils.axios, 'post').resolves({
        data: mockData.mockValidateTxid3Invalid
      })

      const result = await uut.Utils.validateTxid3(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)

      assert.property(result[0], 'txid')
      assert.equal(result[0].txid, txid)

      assert.property(result[0], 'valid')
      assert.equal(result[0].valid, null)
    })

    it('should handle an array with a single element', async () => {
      sandbox
        .stub(uut.Utils.axios, 'post')
        .resolves({ data: mockData.mockValidateTxid3Valid })

      const txid = [
        'daf4d8b8045e7a90b7af81bfe2370178f687da0e545511bce1c9ae539eba5ffd'
      ]

      const result = await uut.Utils.validateTxid3(txid)

      assert.isArray(result)

      assert.property(result[0], 'txid')
      assert.equal(result[0].txid, txid)

      assert.property(result[0], 'valid')
      assert.equal(result[0].valid, true)
    })

    it('should handle an single string input', async () => {
      sandbox
        .stub(uut.Utils.axios, 'post')
        .resolves({ data: mockData.mockValidateTxid3Valid })

      const txid =
        'daf4d8b8045e7a90b7af81bfe2370178f687da0e545511bce1c9ae539eba5ffd'

      const result = await uut.Utils.validateTxid3(txid)

      assert.isArray(result)

      assert.property(result[0], 'txid')
      assert.equal(result[0].txid, txid)

      assert.property(result[0], 'valid')
      assert.equal(result[0].valid, true)
    })

    it('catches and throws an error', async () => {
      try {
        sandbox.stub(uut.Utils.axios, 'post').rejects({
          error:
            'Network error: Could not communicate with full node or other external service.'
        })

        await uut.Utils.validateTxid3()

        assert.equal(true, false, 'Unexpected result')
      } catch (err) {
        // console.log("err: ", err)
        assert.include(err.error, 'Network error')
      }
    })
  })

  describe('#getStatus', () => {
    it('should return the current block height of the SLPDB indexer', async () => {
      sandbox
        .stub(uut.Utils.axios, 'get')
        .resolves({ data: mockData.slpdbStatus })

      const result = await uut.Utils.getStatus()

      // console.log(`result: `, result)

      assert.property(result, 'bchBlockHeight')
      assert.property(result, 'slpProcessedBlockHeight')
    })
  })
})