import 'mocha'
import * as async from 'async'
import Web3 = require('web3')
import * as assert from 'assert'
import { Provider } from 'remix-simulator'

import { compileFileOrFiles } from '../dist/compiler'
import { deployAll } from '../dist/deployer'
import { runTest } from '../dist/index'
import { ResultsInterface, TestCbInterface, ResultCbInterface } from '../dist/index'

var provider = new Provider()

function compileAndDeploy(filename: string, callback: Function) {
  let web3: Web3 = new Web3()
  web3.setProvider(provider)
  let compilationData: object
  let accounts: string[]
  async.waterfall([
    function getAccountList(next: Function): void {
      web3.eth.getAccounts((_err: Error | null | undefined, _accounts: string[]) => {
        accounts = _accounts
        web3.eth.defaultAccount = accounts[0]
        next(_err)
      })
    },
    function compile(next: Function): void {
      compileFileOrFiles(filename, false, { accounts }, next)
    },
    function deployAllContracts(compilationResult: object, next: Function): void {
      try {
        compilationData = compilationResult
        deployAll(compilationResult, web3, next)
      } catch (e) {
        throw e
      }
    }
  ], function (_err: Error | null | undefined, contracts: any): void {
    callback(null, compilationData, contracts, accounts)
  })
}


describe('testRunner', () => {
  describe('#runTest', () => {
    describe('test with beforeAll', () => {
      let filename: string = 'tests/examples_1/simple_storage_test.sol'
      let tests: any[] = [], results: ResultsInterface;

      before((done) => {
        compileAndDeploy(filename, (_err: Error | null | undefined, compilationData: object, contracts: any, accounts: object) => {
          const testCallback: TestCbInterface = (err, test) => {
            if (err) { throw err }
            tests.push(test)
          }
          const resultsCallback: ResultCbInterface = (err, _results) => {
            if (err) { throw err }
            results = _results
            done()
          }
          runTest('MyTest', contracts.MyTest, compilationData[filename]['MyTest'], { accounts }, testCallback, resultsCallback)
        })
      })

      it('should 1 passing test', function () {
        assert.equal(results.passingNum, 2)
      })

      it('should 1 failing test', function () {
        assert.equal(results.failureNum, 2)
      })

      it('should returns 5 messages', function () {
        assert.deepEqual(tests, [
          { type: 'contract', value: 'MyTest', filename: 'tests/examples_1/simple_storage_test.sol' },
          { type: 'testFailure', value: 'Should trigger one fail', time: 1, context: 'MyTest', errMsg: 'the test 1 fails' },
          { type: 'testPass', value: 'Should trigger one pass', time: 1, context: 'MyTest' },
          { type: 'testPass', value: 'Initial value should be100', time: 1, context: 'MyTest' },
          { type: 'testFailure', value: 'Initial value should be200', time: 1, context: 'MyTest', errMsg: 'function returned false' }
        ])
      })
    })

    describe('test with beforeEach', function () {
      let filename = 'tests/examples_2/simple_storage_test.sol'
      let tests: any[] = [], results: ResultsInterface;

      before(function (done) {
        compileAndDeploy(filename, function (_err: Error | null | undefined, compilationData: object, contracts: any, accounts: object) {
          const testCallback: TestCbInterface = (err, test) => {
            if (err) { throw err }
            tests.push(test)
          }
          const resultsCallback: ResultCbInterface = (err, _results) => {
            if (err) { throw err }
            results = _results
            done()
          }

          runTest('MyTest', contracts.MyTest, compilationData[filename]['MyTest'], { accounts }, testCallback, resultsCallback)
        })
      })

      it('should 2 passing tests', function () {
        assert.equal(results.passingNum, 2)
      })

      it('should 0 failing tests', function () {
        assert.equal(results.failureNum, 0)
      })

      it('should returns 3 messages', function () {
        assert.deepEqual(tests, [
          { type: 'contract', value: 'MyTest', filename: 'tests/examples_2/simple_storage_test.sol' },
          { type: 'testPass', value: 'Initial value should be100', time: 1, context: 'MyTest' },
          { type: 'testPass', value: 'Initial value should be200', time: 1, context: 'MyTest' }
        ])
      })
    })

    // Test string equality
    describe('test string equality', function () {
      let filename = 'tests/examples_3/simple_string_test.sol'
      let tests: any[] = [], results: ResultsInterface;

      before(function (done) {
        compileAndDeploy(filename, (_err, compilationData, contracts, accounts) => {
          const testCallback: TestCbInterface = (err, test) => {
            if (err) { throw err }
            tests.push(test)
          }
          const resultsCallback: ResultCbInterface = (err, _results) => {
            if (err) { throw err }
            results = _results
            done()
          }
          runTest('StringTest', contracts.StringTest, compilationData[filename]['StringTest'], { accounts }, testCallback, resultsCallback)
        })
      })

      it('should 2 passing tests', function () {
        assert.equal(results.passingNum, 2)
      })

      it('should 1 failing tests', function () {
        assert.equal(results.failureNum, 1)
      })

      it('should returns 3 messages', function () {
        assert.deepEqual(tests, [
          { type: 'contract', value: 'StringTest', filename: 'tests/examples_3/simple_string_test.sol' },
          { type: 'testFailure', value: 'Value should be hello world', time: 1, context: 'StringTest', "errMsg": "initial value is not correct" },
          { type: 'testPass', value: 'Value should not be hello wordl', time: 1, context: 'StringTest' },
          { type: 'testPass', value: 'Initial value should be hello', time: 1, context: 'StringTest' },
        ])
      })
    })

    //Test signed/unsigned integer weight
    describe('test number weight', function () {
      let filename = 'tests/number/number_test.sol'
      let tests: any[] = [], results: ResultsInterface;

      before(function (done) {
        compileAndDeploy(filename, (_err, compilationData, contracts, accounts) => {
          const testCallback: TestCbInterface = (err, test) => {
            if (err) { throw err }
            tests.push(test)
          }
          const resultsCallback: ResultCbInterface = (err, _results) => {
            if (err) { throw err }
            results = _results
            done()
          }
          runTest('IntegerTest', contracts.IntegerTest, compilationData[filename]['IntegerTest'], { accounts }, testCallback, resultsCallback)
        })
      })

      it('should have 6 passing tests', function () {
        assert.equal(results.passingNum, 6)
      })
      it('should have 2 failing tests', function () {
        assert.equal(results.failureNum, 2)
      })
    })

    // Test Transaction with different sender
    describe('various sender', function () {
      let filename = 'tests/various_sender/sender_test.sol'
      let tests: any[] = [], results: ResultsInterface;

      before(function (done) {
        compileAndDeploy(filename, (_err, compilationData, contracts, accounts) => {
          const testCallback: TestCbInterface = (err, test) => {
            if (err) { throw err }
            tests.push(test)
          }
          const resultsCallback: ResultCbInterface = (err, _results) => {
            if (err) { throw err }
            results = _results
            done()
          }

          runTest('SenderTest', contracts.SenderTest, compilationData[filename]['SenderTest'], { accounts }, testCallback, resultsCallback)

        })
      })

      it('should have 4 passing tests', function () {
        assert.equal(results.passingNum, 4)
      })
      it('should have 1 failing tests', function () {
        assert.equal(results.failureNum, 0)
      })
    })
  })
})
