const supertest = require('supertest')
const { app, server } = require('../index')
const api = supertest(app)
const Blog = require('../models/blog')

beforeAll(async () => {
  await Blog.remove({})
  const blogObjects = initialBlogs.map(blog => new Blog(blog))
  const promiseArray = blogObjects.map(blog => blog.save())
  await Promise.all(promiseArray)
})

test('blogs are returned as json', async () => {
  await api.get('/api/blogs')
    .expect(200)
    .expect('Content-Type', /application\/json/)
})

test('there are two blogs', async () => {
  const response = await api.get('/api/blogs')
  expect(response.body.length).toBe(initialBlogs.length)
})

test('the name of the first blog is Pertin musablogi', async () => {
  const response = await api.get('/api/blogs')
  expect(response.body[0].title).toBe('Pertin musablogi')
})

test('a valid blog can be added ', async () => {
  const newBlog = {
    title: "Sakarin musablogi",
    author: "Sakari Östermalm",
    url: "www.sakarinmusablogi.com",
    likes: 333
  }

  await api
    .post('/api/blogs')
    .send(newBlog).expect(200)
    .expect('Content-Type', /application\/json/)

  const response = await api.get('/api/blogs')
  const contents = response.body.map(blog => blog.title)

  expect(response.body.length).toBe(3)
  expect(contents).toContain('Sakarin musablogi')
})

test('if blog likes are undefined, will post blog with 0 likes', async () => {
  const newBlog = {
    title: "Blogi, josta kukaan ei tykkää",
    author: "Joku",
    url: "www.blogi.com"
  }

  await api
    .post('/api/blogs')
    .send(newBlog).expect(200)
    .expect('Content-Type', /application\/json/)

  const response = await api.get('/api/blogs')

  expect(response.body[3].likes).toBe(0)
})

test('blog without title is not added ', async () => {
  const newBlog = {
    author: "Tuntematon sotilas",
    url: "www.tuntematon.com"
  }

  await api
    .post('/api/blogs')
    .send(newBlog)
    .expect(400)

  const response = await api
    .get('/api/blogs')

  expect(response.body.length).toBe(4)
})

test('blog without url is not added ', async () => {
  const newBlog = {
    title: "Blogi, josta kukaan ei tykkää",
    author: "Joku",
  }

  await api
    .post('/api/blogs')
    .send(newBlog)
    .expect(400)

  const response = await api
    .get('/api/blogs')

  expect(response.body.length).toBe(4)
})

afterAll(() => {
  server.close()
})