/* eslint-disable func-style */

const { binary } = require('../dist/coretypes')
const { encode, decode } = require('../dist')
const { makeParser, BytesList, BinarySerializer } = binary
const { coreTypes } = require('../dist/types')
const { UInt8, UInt16, UInt32, UInt64, STObject } = coreTypes

const { loadFixture } = require('./utils')
const fixtures = loadFixture('data-driven-tests.json')
const deliverMinTx = require('./fixtures/delivermin-tx.json')
const deliverMinTxBinary = require('./fixtures/delivermin-tx-binary.json')
const SignerListSet = {
  tx: require('./fixtures/signerlistset-tx.json'),
  binary: require('./fixtures/signerlistset-tx-binary.json'),
  meta: require('./fixtures/signerlistset-tx-meta-binary.json')
}
const DepositPreauth = {
  tx: require('./fixtures/deposit-preauth-tx.json'),
  binary: require('./fixtures/deposit-preauth-tx-binary.json'),
  meta: require('./fixtures/deposit-preauth-tx-meta-binary.json')
}
const Escrow = {
  create: {
    tx: require('./fixtures/escrow-create-tx.json'),
    binary: require('./fixtures/escrow-create-binary.json')
  },
  finish: {
    tx: require('./fixtures/escrow-finish-tx.json'),
    binary: require('./fixtures/escrow-finish-binary.json'),
    meta: require('./fixtures/escrow-finish-meta-binary.json')
  },
  cancel: {
    tx: require('./fixtures/escrow-cancel-tx.json'),
    binary: require('./fixtures/escrow-cancel-binary.json')
  }
}
const PaymentChannel = {
  create: {
    tx: require('./fixtures/payment-channel-create-tx.json'),
    binary: require('./fixtures/payment-channel-create-binary.json')
  },
  fund: {
    tx: require('./fixtures/payment-channel-fund-tx.json'),
    binary: require('./fixtures/payment-channel-fund-binary.json')
  },
  claim: {
    tx: require('./fixtures/payment-channel-claim-tx.json'),
    binary: require('./fixtures/payment-channel-claim-binary.json')
  }
}

const NegativeUNL = require('./fixtures/negative-unl.json');

function bytesListTest () {
  const list = new BytesList().put(Buffer.from([0])).put(Buffer.from([2, 3])).put(Buffer.from([4, 5]))
  test('is an Array<Buffer>', function () {
    expect(Array.isArray(list.bytesArray)).toBe(true)
    expect(list.bytesArray[0] instanceof Buffer).toBe(true)
  })
  test('keeps track of the length itself', function () {
    expect(list.getLength()).toBe(5)
  })
  test('can join all arrays into one via toBytes', function () {
    const joined = list.toBytes()
    expect(joined).toHaveLength(5)
    expect(joined).toEqual(Buffer.from([0, 2, 3, 4, 5]))
  })
}

function assertRecycles (blob) {
  const parser = makeParser(blob)
  const so = parser.readType(STObject)
  const out = new BytesList()
  so.toBytesSink(out)
  const hex = out.toHex()
  expect(hex).toEqual(blob)
  expect(hex + ':').not.toEqual(blob)
}

function nestedObjectTests () {
  fixtures.whole_objects.forEach((f, i) => {
    test(`whole_objects[${i}]: can parse blob and dump out same blob`,
    /*                                              */ () => {
        assertRecycles(f.blob_with_no_signing)
      })
  })
}

function check (type, n, expected) {
  test(`Uint${type.width * 8} serializes ${n} as ${expected}`, function () {
    const bl = new BytesList()
    const serializer = new BinarySerializer(bl)
    if (expected === 'throws') {
      expect(() => serializer.writeType(type, n)).toThrow()
      return
    }
    serializer.writeType(type, n)
    expect(bl.toBytes()).toEqual(Buffer.from(expected))
  })
}

check(UInt8, 5, [5])
check(UInt16, 5, [0, 5])
check(UInt32, 5, [0, 0, 0, 5])
check(UInt32, 0xFFFFFFFF, [255, 255, 255, 255])
check(UInt8, 0xFEFFFFFF, 'throws')
check(UInt16, 0xFEFFFFFF, 'throws')
check(UInt16, 0xFEFFFFFF, 'throws')
check(UInt64, 0xFEFFFFFF, [0, 0, 0, 0, 254, 255, 255, 255])
check(UInt64, -1, 'throws')
check(UInt64, 0, [0, 0, 0, 0, 0, 0, 0, 0])
check(UInt64, 1, [0, 0, 0, 0, 0, 0, 0, 1])
check(UInt64, BigInt(1), [0, 0, 0, 0, 0, 0, 0, 1])

// function parseLedger4320278() {
//   test('can parse object', done => {
//     const json = loadFixture('as-ledger-4320278.json');
//     json.forEach(e => {
//       assertRecycles(e.binary);
//     });
//     done();
//   });
// }
// parseLedger4320278();

function deliverMinTest () {
  test('can serialize DeliverMin', () => {
    expect(encode(deliverMinTx)).toEqual(deliverMinTxBinary)
  })
}

function SignerListSetTest () {
  test('can serialize SignerListSet', () => {
    expect(encode(SignerListSet.tx)).toEqual(SignerListSet.binary)
  })
  test('can serialize SignerListSet metadata', () => {
    expect(encode(SignerListSet.tx.meta)).toEqual(SignerListSet.meta)
  })
}

function DepositPreauthTest () {
  test('can serialize DepositPreauth', () => {
    expect(encode(DepositPreauth.tx)).toEqual(DepositPreauth.binary)
  })
  test('can serialize DepositPreauth metadata', () => {
    expect(encode(DepositPreauth.tx.meta)).toEqual(DepositPreauth.meta)
  })
}

function EscrowTest () {
  test('can serialize EscrowCreate', () => {
    expect(encode(Escrow.create.tx)).toEqual(Escrow.create.binary)
  })
  test('can serialize EscrowFinish', () => {
    expect(encode(Escrow.finish.tx)).toEqual(Escrow.finish.binary)
    expect(encode(Escrow.finish.tx.meta)).toEqual(Escrow.finish.meta)
  })
  test('can serialize EscrowCancel', () => {
    expect(encode(Escrow.cancel.tx)).toEqual(Escrow.cancel.binary)
  })
}

function PaymentChannelTest () {
  test('can serialize PaymentChannelCreate', () => {
    expect(encode(PaymentChannel.create.tx)).toEqual(PaymentChannel.create.binary)
  })
  test('can serialize PaymentChannelFund', () => {
    expect(encode(PaymentChannel.fund.tx)).toEqual(PaymentChannel.fund.binary)
  })
  test('can serialize PaymentChannelClaim', () => {
    expect(encode(PaymentChannel.claim.tx)).toEqual(PaymentChannel.claim.binary)
  })
}

function NegativeUNLTest () {
  test('can serialize NegativeUNL', () => {
    expect(encode(NegativeUNL.tx)).toEqual(NegativeUNL.binary);
  })
  test('can deserialize NegativeUNL', () => {
    expect(decode(NegativeUNL.binary)).toEqual(NegativeUNL.tx);
  })
}

describe('Binary Serialization', function() {
  describe('nestedObjectTests', nestedObjectTests);
  describe('BytesList', bytesListTest);
  describe('DeliverMin', deliverMinTest);
  describe('DepositPreauth', DepositPreauthTest);
  describe('SignerListSet', SignerListSetTest);
  describe('Escrow', EscrowTest);
  describe('PaymentChannel', PaymentChannelTest);
  describe('NegativeUNLTest', NegativeUNLTest);
})