import { datatype } from 'faker'

import { RedisService } from './redis.service'

jest.mock('redis', () => ({
  createClient: () => ({
    on: jest.fn(),
    set: jest.fn((_a, _b, callback) => callback(null, true)),
    get: jest.fn((_a, callback) => callback(null, true)),
  }),
}))

describe('RedisService', () => {
  let subject: RedisService
  let isActive: boolean

  beforeAll(() => {
    globalThis.secret = {
      redis: {
        url: '',
      },
    } as any
    subject = new RedisService()
    subject.onModuleInit()
  })

  beforeEach(() => {
    Object.defineProperty(subject, 'isActive', { get: () => isActive ?? true, configurable: true })
  })

  afterEach(() => {
    jest.clearAllMocks()
  })

  describe('#set', () => {
    const key = datatype.uuid()
    const value = datatype.uuid()

    it('calls redis set function', async () => {
      await subject.set(key, value)

      expect(subject['_client'].set).toBeCalledWith(key, value, expect.anything())
    })

    describe('when is inactive', () => {
      beforeAll(() => {
        isActive = false
      })

      afterAll(() => {
        isActive = true
      })

      it('does not call redis set function', async () => {
        await subject.set(key, value)

        expect(subject['_client'].set).not.toBeCalled()
      })
    })
  })

  describe('#get', () => {
    const key = datatype.uuid()

    it('calls redis get function', async () => {
      await subject.get(key)

      expect(subject['_client'].get).toBeCalledWith(key, expect.anything())
    })

    describe('when is inactive', () => {
      beforeAll(() => {
        isActive = false
      })

      afterAll(() => {
        isActive = true
      })

      it('does not calls redis get function', async () => {
        await subject.get(key)

        expect(subject['_client'].get).not.toBeCalled()
      })
    })
  })
})