import { expect } from 'chai'
import * as jwt from 'jsonwebtoken'
import 'mocha'
import sinon, { SinonFakeTimers } from 'sinon'
import { User } from '../../src/entity/user'
import { env } from '../../src/env'
import { userRepository } from '../../src/repository/user'
import {
  createFeature,
  createFeatures,
  deleteFeature,
} from '../../src/services/features'
import { deleteUser, deleteUsers } from '../../src/services/user'
import { createTestUser } from '../db'
import { graphqlRequest, request } from '../util'

describe('features resolvers', () => {
  let loginUser: User
  let authToken: string

  before(async () => {
    // create test user and login
    loginUser = await createTestUser('loginUser')
    const res = await request
      .post('/local/debug/fake-user-login')
      .send({ fakeEmail: loginUser.email })

    authToken = res.body.authToken as string
  })

  after(async () => {
    await deleteUser(loginUser.id)
  })

  describe('optInFeature API', () => {
    const featureName = 'ultra-realistic-voice'
    const now = new Date()
    let clock: SinonFakeTimers

    const query = (name: string) => `
      mutation {
        optInFeature(input: {
          name: "${name}"
        }) {
          ... on OptInFeatureSuccess {
            feature {
              name
              grantedAt
              token
            }
          }
          ... on OptInFeatureError {
            errorCodes
          }
        }
      }
    `

    before(() => {
      console.log('opting in to feature')
      // mock date and ignore milliseconds
      clock = sinon.useFakeTimers(now.setSeconds(now.getSeconds(), 0))
    })

    after(() => {
      clock.restore()
    })

    context('when user is the first 1500 users', () => {
      after(async () => {
        // reset feature
        await deleteFeature({ user: { id: loginUser.id } })
      })

      it('opts in to the feature', async () => {
        const res = await graphqlRequest(query(featureName), authToken).expect(
          200
        )

        const token = jwt.sign(
          {
            uid: loginUser.id,
            featureName,
            grantedAt: Date.now() / 1000,
          },
          env.server.jwtSecret,
          { expiresIn: '1y' }
        )

        expect(res.body.data.optInFeature).to.eql({
          feature: {
            name: featureName,
            grantedAt: new Date().toISOString(),
            token,
          },
        })
      })
    })

    context('when user is not the first 1500 users', () => {
      let users: User[]

      before(async () => {
        // create 1500 opt-in users
        const usersToSave = Array.from(Array(1500).keys()).map((i) => {
          return {
            name: `opt-in-user-${i}`,
            source: 'GOOGLE',
            sourceUserId: `fake-user-id-user${i}`,
            email: `opt-in-user-${i}@omnivore.app`,
            username: `user${i}`,
            bio: `i am user${i}`,
          }
        })

        users = await userRepository.save(usersToSave)

        const features = users.map((user) => {
          return {
            user,
            name: featureName,
            grantedAt: new Date(),
          }
        })

        await createFeatures(features)
      })

      after(async () => {
        // reset opt-in users
        await deleteUsers(users.map((user) => user.id))
        // reset feature
        await deleteFeature({ name: featureName })
      })

      it('does not opt in to the feature', async () => {
        const res = await graphqlRequest(query(featureName), authToken).expect(
          200
        )

        const token = jwt.sign(
          {
            uid: loginUser.id,
            featureName,
            grantedAt: null,
          },
          env.server.jwtSecret,
          { expiresIn: '1y' }
        )

        expect(res.body.data.optInFeature).to.eql({
          feature: {
            name: featureName,
            grantedAt: null,
            token,
          },
        })
      })
    })

    context('when user is already opted in', () => {
      before(async () => {
        // opt in
        await createFeature({
          user: { id: loginUser.id },
          name: featureName,
          grantedAt: new Date(),
        })
      })

      after(async () => {
        // reset feature
        await deleteFeature({ user: { id: loginUser.id } })
      })

      it('returns the feature', async () => {
        const res = await graphqlRequest(query(featureName), authToken).expect(
          200
        )

        const token = jwt.sign(
          {
            uid: loginUser.id,
            featureName,
            grantedAt: Date.now() / 1000,
          },
          env.server.jwtSecret,
          { expiresIn: '1y' }
        )

        expect(res.body.data.optInFeature).to.eql({
          feature: {
            name: featureName,
            grantedAt: new Date().toISOString(),
            token,
          },
        })
      })
    })
  })
})