import { assert } from 'chai'

import { ValidationError } from '../../src/common/errors'
import { computeLedgerHeaderHash } from '../../src/utils'
import requests from '../fixtures/requests'
import responses from '../fixtures/responses'
import { assertResultMatch } from '../testUtils'

const { computeLedgerHash: REQUEST_FIXTURES } = requests

describe('computeLedgerHash', function () {
  it('given corrupt data - should fail', function () {
    const ledger = JSON.parse(JSON.stringify(responses.getLedger.full))
    ledger.transactions[0].rawTransaction =
      '{"Account":"r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV","Amount":"12000000000","Destination":"rLQBHVhFnaC5gLEkgr6HgBJJ3bgeZHg9cj","Fee":"10","Flags":0,"Sequence":62,"SigningPubKey":"034AADB09CFF4A4804073701EC53C3510CDC95917C2BB0150FB742D0C66E6CEE9E","TransactionType":"Payment","TxnSignature":"3045022022EB32AECEF7C644C891C19F87966DF9C62B1F34BABA6BE774325E4BB8E2DD62022100A51437898C28C2B297112DF8131F2BB39EA5FE613487DDD611525F1796264639","hash":"3B1A4E1C9BB6A7208EB146BCDB86ECEA6068ED01466D933528CA2B4C64F753EF","meta":{"AffectedNodes":[{"CreatedNode":{"LedgerEntryType":"AccountRoot","LedgerIndex":"4C6ACBD635B0F07101F7FA25871B0925F8836155462152172755845CE691C49E","NewFields":{"Account":"rLQBHVhFnaC5gLEkgr6HgBJJ3bgeZHg9cj","Balance":"10000000000","Sequence":1}}},{"ModifiedNode":{"FinalFields":{"Account":"r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV","Balance":"981481999380","Flags":0,"OwnerCount":0,"Sequence":63},"LedgerEntryType":"AccountRoot","LedgerIndex":"B33FDD5CF3445E1A7F2BE9B06336BEBD73A5E3EE885D3EF93F7E3E2992E46F1A","PreviousFields":{"Balance":"991481999390","Sequence":62},"PreviousTxnID":"2485FDC606352F1B0785DA5DE96FB9DBAF43EB60ECBB01B7F6FA970F512CDA5F","PreviousTxnLgrSeq":31317}}],"TransactionIndex":0,"TransactionResult":"tesSUCCESS"},"ledger_index":38129}'
    ledger.parentCloseTime = ledger.closeTime
    let hash: string
    try {
      hash = computeLedgerHeaderHash(ledger, { computeTreeHashes: true })
    } catch (error) {
      assert(error instanceof ValidationError)
      assert.strictEqual(
        error.message,
        'transactionHash in header does not match computed hash of transactions',
      )
      assert.deepStrictEqual(error.data, {
        transactionHashInHeader:
          'DB83BF807416C5B3499A73130F843CF615AB8E797D79FE7D330ADF1BFA93951A',
        computedHashOfTransactions:
          'EAA1ADF4D627339450F0E95EA88B7069186DD64230BAEBDCF3EEC4D616A9FC68',
      })
      return
    }
    assert(
      false,
      `Should throw ValidationError instead of producing hash: ${hash}`,
    )
  })

  it('given ledger without raw transactions - should throw', function () {
    const ledger = JSON.parse(JSON.stringify(responses.getLedger.full))
    delete ledger.transactions[0].rawTransaction
    ledger.parentCloseTime = ledger.closeTime
    let hash: string
    try {
      hash = computeLedgerHeaderHash(ledger, { computeTreeHashes: true })
    } catch (error) {
      assert(error instanceof ValidationError)
      assert.strictEqual(error.message, 'ledger is missing raw transactions')
      return
    }
    assert(
      false,
      `Should throw ValidationError instead of producing hash: ${hash}`,
    )
  })

  it('given ledger without state or transactions - only compute ledger hash', function () {
    const ledger = JSON.parse(JSON.stringify(responses.getLedger.full))
    assert.strictEqual(
      ledger.transactions[0].rawTransaction,
      '{"Account":"r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV","Amount":"10000000000","Destination":"rLQBHVhFnaC5gLEkgr6HgBJJ3bgeZHg9cj","Fee":"10","Flags":0,"Sequence":62,"SigningPubKey":"034AADB09CFF4A4804073701EC53C3510CDC95917C2BB0150FB742D0C66E6CEE9E","TransactionType":"Payment","TxnSignature":"3045022022EB32AECEF7C644C891C19F87966DF9C62B1F34BABA6BE774325E4BB8E2DD62022100A51437898C28C2B297112DF8131F2BB39EA5FE613487DDD611525F1796264639","hash":"3B1A4E1C9BB6A7208EB146BCDB86ECEA6068ED01466D933528CA2B4C64F753EF","meta":{"AffectedNodes":[{"CreatedNode":{"LedgerEntryType":"AccountRoot","LedgerIndex":"4C6ACBD635B0F07101F7FA25871B0925F8836155462152172755845CE691C49E","NewFields":{"Account":"rLQBHVhFnaC5gLEkgr6HgBJJ3bgeZHg9cj","Balance":"10000000000","Sequence":1}}},{"ModifiedNode":{"FinalFields":{"Account":"r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV","Balance":"981481999380","Flags":0,"OwnerCount":0,"Sequence":63},"LedgerEntryType":"AccountRoot","LedgerIndex":"B33FDD5CF3445E1A7F2BE9B06336BEBD73A5E3EE885D3EF93F7E3E2992E46F1A","PreviousFields":{"Balance":"991481999390","Sequence":62},"PreviousTxnID":"2485FDC606352F1B0785DA5DE96FB9DBAF43EB60ECBB01B7F6FA970F512CDA5F","PreviousTxnLgrSeq":31317}}],"TransactionIndex":0,"TransactionResult":"tesSUCCESS"},"ledger_index":38129}',
    )
    ledger.parentCloseTime = ledger.closeTime
    const computeLedgerHash = computeLedgerHeaderHash
    function testCompute(ledgerToCompute, expectedError): void {
      let hash = computeLedgerHash(ledgerToCompute)
      assert.strictEqual(
        hash,
        'E6DB7365949BF9814D76BCC730B01818EB9136A89DB224F3F9F5AAE4569D758E',
      )
      // fail if required to compute tree hashes
      try {
        hash = computeLedgerHash(ledgerToCompute, { computeTreeHashes: true })
      } catch (error) {
        assert(error instanceof ValidationError)
        assert.strictEqual(error.message, expectedError)
        return
      }
      assert(
        false,
        `Should throw ValidationError instead of producing hash: ${hash}`,
      )
    }

    const transactions = ledger.transactions
    delete ledger.transactions
    testCompute(ledger, 'transactions property is missing from the ledger')
    delete ledger.rawState
    testCompute(ledger, 'transactions property is missing from the ledger')
    ledger.transactions = transactions
    testCompute(ledger, 'rawState property is missing from the ledger')
  })

  it('wrong hash', function () {
    const ledger = JSON.parse(JSON.stringify(responses.getLedger.full))
    assertResultMatch(ledger, responses.getLedger.full, 'getLedger')
    const newLedger = {
      ...ledger,
      parentCloseTime: ledger.closeTime,
      stateHash:
        'D9ABF622DA26EEEE48203085D4BC23B0F77DC6F8724AC33D975DA3CA492D2E44',
    }
    assert.throws(() => {
      computeLedgerHeaderHash(newLedger)
    }, /does not match computed hash of state/u)
  })

  it('computeLedgerHash', function () {
    const header = REQUEST_FIXTURES.header
    const ledgerHash = computeLedgerHeaderHash(header)
    assert.strictEqual(
      ledgerHash,
      'F4D865D83EB88C1A1911B9E90641919A1314F36E1B099F8E95FE3B7C77BE3349',
    )
  })

  it('computeLedgerHash - with transactions', function () {
    const header = {
      ...REQUEST_FIXTURES.header,
      transactionHash: undefined,
      rawTransactions: JSON.stringify(REQUEST_FIXTURES.transactions),
    }
    const ledgerHash = computeLedgerHeaderHash(header)
    assert.strictEqual(
      ledgerHash,
      'F4D865D83EB88C1A1911B9E90641919A1314F36E1B099F8E95FE3B7C77BE3349',
    )
  })

  it('computeLedgerHash - incorrent transaction_hash', function () {
    const header = {
      ...REQUEST_FIXTURES.header,
      transactionHash:
        '325EACC5271322539EEEC2D6A5292471EF1B3E72AE7180533EFC3B8F0AD435C9',
    }
    assert.throws(() => computeLedgerHeaderHash(header))
  })
})