import {
  GraphQLClient
} from 'graphql-request'
import Factory from '../../seed/factories'
import {
  host,
  login
} from '../../jest/helpers'

const factory = Factory()
let client
const userParams = {
  id: 'you',
  email: 'test@example.org',
  password: '1234',
}

beforeEach(async () => {
  await factory.create('User', userParams)
})

afterEach(async () => {
  await factory.cleanDatabase()
})

describe('Notification', () => {
  const query = `{
    Notification {
      id
    }
  }`

  describe('unauthenticated', () => {
    it('throws authorization error', async () => {
      client = new GraphQLClient(host)
      await expect(client.request(query)).rejects.toThrow('Not Authorised')
    })
  })
})

describe('currentUser { notifications }', () => {
  const variables = {}

  describe('authenticated', () => {
    let headers
    beforeEach(async () => {
      headers = await login({
        email: 'test@example.org',
        password: '1234'
      })
      client = new GraphQLClient(host, {
        headers
      })
    })

    describe('given some notifications', () => {
      beforeEach(async () => {
        const neighborParams = {
          email: 'neighbor@example.org',
          password: '1234',
          id: 'neighbor',
        }
        await Promise.all([
          factory.create('User', neighborParams),
          factory.create('Notification', {
            id: 'not-for-you'
          }),
          factory.create('Notification', {
            id: 'already-seen',
            read: true
          }),
        ])
        await factory.create('Notification', {
          id: 'unseen'
        })
        await factory.authenticateAs(neighborParams)
        await factory.create('Post', {
          id: 'p1'
        })
        await Promise.all([
          factory.relate('Notification', 'User', {
            from: 'not-for-you',
            to: 'neighbor'
          }),
          factory.relate('Notification', 'Post', {
            from: 'p1',
            to: 'not-for-you'
          }),
          factory.relate('Notification', 'User', {
            from: 'unseen',
            to: 'you'
          }),
          factory.relate('Notification', 'Post', {
            from: 'p1',
            to: 'unseen'
          }),
          factory.relate('Notification', 'User', {
            from: 'already-seen',
            to: 'you'
          }),
          factory.relate('Notification', 'Post', {
            from: 'p1',
            to: 'already-seen'
          }),
        ])
      })

      describe('filter for read: false', () => {
        const query = `query($read: Boolean) {
          currentUser {
            notifications(read: $read, orderBy: createdAt_desc) {
              id
              post {
                id
              }
            }
          }
        }`
        const variables = { read: false }
        it('returns only unread notifications of current user', async () => {
          const expected = {
            currentUser: {
              notifications: [{
                id: 'unseen',
                post: {
                  id: 'p1'
                }
              }],
            },
          }
          await expect(client.request(query, variables)).resolves.toEqual(expected)
        })
      })

      describe('no filters', () => {
        const query = `{
          currentUser {
            notifications(orderBy: createdAt_desc) {
              id
              post {
                id
              }
            }
          }
        }`
        it('returns all notifications of current user', async () => {
          const expected = {
            currentUser: {
              notifications: [{
                  id: 'unseen',
                  post: {
                    id: 'p1'
                  }
                },
                {
                  id: 'already-seen',
                  post: {
                    id: 'p1'
                  }
                },
              ],
            },
          }
          await expect(client.request(query, variables)).resolves.toEqual(expected)
        })
      })
    })
  })
})

describe('UpdateNotification', () => {
  const mutation = `mutation($id: ID!, $read: Boolean){
    UpdateNotification(id: $id, read: $read) {
      id read
    }
  }`
  const variables = {
    id: 'to-be-updated',
    read: true
  }

  describe('given a notifications', () => {
    let headers

    beforeEach(async () => {
      const mentionedParams = {
        id: 'mentioned-1',
        email: 'mentioned@example.org',
        password: '1234',
        slug: 'mentioned',
      }
      await factory.create('User', mentionedParams)
      await factory.create('Notification', {
        id: 'to-be-updated'
      })
      await factory.authenticateAs(userParams)
      await factory.create('Post', {
        id: 'p1'
      })
      await Promise.all([
        factory.relate('Notification', 'User', {
          from: 'to-be-updated',
          to: 'mentioned-1'
        }),
        factory.relate('Notification', 'Post', {
          from: 'p1',
          to: 'to-be-updated'
        }),
      ])
    })

    describe('unauthenticated', () => {
      it('throws authorization error', async () => {
        client = new GraphQLClient(host)
        await expect(client.request(mutation, variables)).rejects.toThrow('Not Authorised')
      })
    })

    describe('authenticated', () => {
      beforeEach(async () => {
        headers = await login({
          email: 'test@example.org',
          password: '1234'
        })
        client = new GraphQLClient(host, {
          headers
        })
      })

      it('throws authorization error', async () => {
        await expect(client.request(mutation, variables)).rejects.toThrow('Not Authorised')
      })

      describe('and owner', () => {
        beforeEach(async () => {
          headers = await login({
            email: 'mentioned@example.org',
            password: '1234'
          })
          client = new GraphQLClient(host, {
            headers
          })
        })

        it('updates notification', async () => {
          const expected = {
            UpdateNotification: {
              id: 'to-be-updated',
              read: true
            }
          }
          await expect(client.request(mutation, variables)).resolves.toEqual(expected)
        })
      })
    })
  })
})