import 'typings-test'
import taskbuffer = require('../dist/index')
import { expect } from 'smartchai'
import * as q from 'smartq'

// setup some testData to work with
let testTask: taskbuffer.Task
let testTaskFunction = function () {
  let done = q.defer()
  console.log('main function executed!')
  done.resolve()
  return done.promise
}

let testTaskFunctionTimeout = function () {
  let done = q.defer()
  console.log('main function started!')
  setTimeout(() => {
    console.log('main function ended!')
    done.resolve()
  }, 2000)
  return done.promise
}

let testPreTask = new taskbuffer.Task({
  taskFunction: function () {
    let done = q.defer()
    console.log('preTask executed')
    done.resolve()
    return done.promise
  },
  preTask: testTask
})


// some more tasks to wirj with
let task1 = new taskbuffer.Task({
  name: 'Task 1',
  taskFunction: () => {
    let done = q.defer()
    console.log('Task1 started')
    setTimeout(() => {
      console.log('Task1 executed')
      done.resolve()
    }, 5000)
    return done.promise
  }
})
let task2 = new taskbuffer.Task({
  name: 'Task 1',
  taskFunction: () => {
    let done = q.defer()
    console.log('Task2 started')
    setTimeout(() => {
      console.log('Task2 executed')
      done.resolve()
    }, 5000)
    return done.promise
  }
})
let task3 = new taskbuffer.Task({
  name: 'Task 3',
  taskFunction: () => {
    let done = q.defer()
    console.log('Task3 started')
    setTimeout(() => {
      console.log('Task3 executed')
      done.resolve()
    }, 5000)
    return done.promise
  }
})

// the actual tests
describe('taskbuffer', function () {
  describe('.Task', function () {
    it('new Task() should return a new task', function () {
      testTask = new taskbuffer.Task({ taskFunction: testTaskFunction, preTask: testPreTask })
    })
    it('testTask should be and instance of Task', function () {
      expect(testTask).to.be.instanceof(taskbuffer.Task)
    })
    it('testTask.idle is true', function () {
      if (!testTask.idle) {
        throw new Error('testTask.idle is not true')
      }

    })
    it('testTask.running is type boolean and initially false', function () {
      expect(testTask.running).to.be.a('boolean')
      expect(testTask.running).to.be.false
    })
    it('testTask.trigger() expect return Promise', function () {
      expect(testTask.trigger()).to.be.instanceof(Promise)
    })
    it('testTask.trigger() returned Promise expect be fullfilled', function (done) {
      testTask.trigger()
        .then(done)
    })
    it('expect run a task without pre and afterTask', function (done) {
      let localTestTask = new taskbuffer.Task({ taskFunction: testTaskFunction })
      localTestTask.trigger().then(done)
    })

    it('expect run buffered', function (done) {
      this.timeout(10000)
      let localTestTask = new taskbuffer.Task({
        taskFunction: testTaskFunctionTimeout,
        buffered: true,
        bufferMax: 2
      })
      localTestTask.trigger()
      localTestTask.trigger()
      localTestTask.trigger()
      localTestTask.trigger().then(() => {
        done()
      })
    })
  })
  describe('Taskchain', function () {
    let testTaskchain
    let testTaskArray = [
      new taskbuffer.Task({
        name: 'task1',
        taskFunction: function () {
          let done = q.defer()
          setTimeout(done.resolve, 2000)
          return done.promise
        }
      }),
      new taskbuffer.Task({
        name: 'task2',
        taskFunction: function () {
          let done = q.defer()
          setTimeout(done.resolve, 2000)
          return done.promise
        }
      })
    ]
    it('expect run tasks in sequence', function (done) {
      this.timeout(5000)
      testTaskchain = new taskbuffer.Taskchain({
        name: 'Taskchain1',
        taskArray: testTaskArray
      })
      testTaskchain.trigger().then(done)
    })
  })
  describe('taskparallel', function () {
    it('expect run in Parallel', function (done) {
      this.timeout(7000)
      let testTaskparallel = new taskbuffer.Taskparallel({
        taskArray: [ task1, task2, task3 ]
      })
      testTaskparallel.trigger().then(() => {
        done()
      })
    })
  })
  describe('some flowtests', function () {
    let flowTask1 = new taskbuffer.Task({
      taskFunction: (x: number) => {
        let done = q.defer()
        console.log('flowTask1')
        console.log(x)
        done.resolve(x)
        return done.promise
      }
    })

    let flowTaskBuffered = new taskbuffer.Task({
      taskFunction: (x: number) => {
        let done = q.defer()
        console.log('flowTask1')
        console.log(x)
        done.resolve(x)
        return done.promise
      },
      buffered: true,
      bufferMax: 1
    })

    let flowTask2 = new taskbuffer.Task({
      taskFunction: (x: number) => {
        let done = q.defer()
        console.log('flowTask2')
        console.log(x)
        done.resolve(x)
        return done.promise
      },
      preTask: flowTask1
    })
    let flowTask3 = new taskbuffer.Taskchain({
      taskArray: [ flowTask1, flowTask2 ]
    })
    it('should let a value flow through a task', function (done) {
      flowTask1.trigger(12).then((x) => {
        expect(x).to.equal(12)
        done()
      }).catch(done)
    })
    it('should let a values flow between tasks', function (done) {
      flowTask2.trigger(12).then((x) => {
        expect(x).to.equal(12)
        done()
      }).catch(done)
    })

    it('expect let a values flow between tasks when buffered', function (done) {
      flowTaskBuffered.trigger(12).then((x) => {
        expect(x).to.equal(12)
        done()
      }).catch(done)
    })

    it('should let a values flow between tasks in Taskchain', function (done) {
      flowTask3.trigger(12).then((x) => {
        expect(x).to.equal(12)
        done()
      }).catch(done)
    })
  })
})