import * as dotenv from 'dotenv'
dotenv.config()
import mongoose from 'mongoose'
mongoose.Promise = Promise
import RESTControllerVersioned from './RESTControllerVersioned'
import { Model } from '../routeGenModel'

const spyFind = jest.spyOn(Model, 'find')
const spyFindOne = jest.spyOn(Model, 'findOne')
const spyCreate = jest.spyOn(Model, 'create')
const spyUpdate = jest.spyOn(Model, 'update')
const spyRemove = jest.spyOn(Model, 'remove')

describe('REST Controller Versioned', () => {
  const ModelController = new RESTControllerVersioned(Model)
  const createdModel = {
    name: 'Gisele',
    tag: 'gisele'
  }
  const updatedModel = {
    name: 'Adriana'
  }
  const createdHistory = {
    author: 'Tomi',
    version: '1st shot',
    comment: 'Nothing to brag about',
    head: true
  }
  const updatedHistory = {
    author: 'Ben',
    version: '2nd shot',
    comment: 'I\'m a little narcissict',
    head: true
  }
  let createdId = null

  beforeAll(() => {
    return mongoose.connect('mongodb://localhost/__test_rest-controller_versioned__')
    Model.remove({}, err => {
      console.log(err)
    })
  })
  afterAll(() => {
    Model.remove({}, err => {
      console.log(err)
    })
  })

  it('creates an element', () => {
    return ModelController.create(createdModel, createdHistory.author, createdHistory.version, createdHistory.comment)
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        createdId = response._id
        expect(copy).toMatchObject({__v: 0, _history: createdHistory, ...createdModel })
        expect(spyCreate).toHaveBeenCalledTimes(1)
        spyCreate.mockClear()
      })
  })

  it('reads an element', () => {
    return ModelController.read(createdModel.tag)
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy).toMatchObject({__v: 0, ...createdModel})
        expect(spyFindOne).toHaveBeenCalledWith({ '_history.head': true, tag: createdModel.tag })
        expect(spyFindOne).toHaveBeenCalledTimes(1)
        spyFindOne.mockClear()
      })
  })

  it('lists elements', () => {
    return ModelController.list()
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy[0]).toMatchObject({__v: 0, ...createdModel})
        expect(response).toHaveLength(1)
        // expect(spyFind).toHaveBeenCalledWith({})
        expect(spyFind).toHaveBeenCalledTimes(1)
        spyFind.mockClear()
      })
  })

  it('update elements', () => {
    return ModelController.update('gisele', updatedModel, updatedHistory.author, updatedHistory.version, updatedHistory.comment)
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy).toMatchObject({ __v: 0, ...updatedModel })
        expect(spyFindOne).toHaveBeenCalledWith({ '_history.head': true, tag: 'gisele' })
        expect(spyFindOne).toHaveBeenCalledTimes(1)
        spyFindOne.mockClear()
      })
  })

  it('delete elements', () => {
    return ModelController.delete('gisele')
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy).toMatchObject({ tag: 'gisele', _history: { head: false } })
        expect(spyFindOne).toHaveBeenCalledWith({ '_history.head': true, tag: 'gisele' })
        expect(spyFindOne).toHaveBeenCalledTimes(1)
        spyFindOne.mockClear()
      })
  })

  it('lists elements after all operations', () => {
    return ModelController.list()
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy).toEqual([])
        expect(spyFind).toHaveBeenCalledWith({'_history.head': true})
        expect(spyFind).toHaveBeenCalledTimes(1)
        spyFind.mockClear()
      })
  })

  it('lists elements after all operations', () => {
    return ModelController.list({})
      .then(response => {
        // Check the copy due to a bug with jest.
        const copy = JSON.parse(JSON.stringify(response))
        expect(copy[0]).toMatchObject({ ...createdModel, _history: { head: false } })
        expect(copy[1]).toMatchObject({ ...updatedModel, _history: { head: false } })
        expect(response).toHaveLength(2)
        // expect(spyFind).toHaveBeenCalledWith({})
        expect(spyFind).toHaveBeenCalledTimes(1)
        spyFind.mockClear()
      })
  })
})