import {createPrivateUserMessageChannel} from 'api/create-private-user-message-channel'
import {AuthedUser} from 'api/helpers/endpoint'
import * as privateMessageModules from 'api/helpers/private-messages'
import {sqlMatch} from 'common/test-utils'
import * as utilArrayModules from 'common/util/array'
import * as admin from 'firebase-admin'
import * as supabaseInit from 'shared/supabase/init'
import * as sharedUtils from 'shared/utils'

jest.mock('shared/supabase/init')
jest.mock('common/util/array')
jest.mock('api/helpers/private-messages')
jest.mock('shared/utils')
jest.mock('firebase-admin', () => ({
  auth: jest.fn(),
}))

describe('createPrivateUserMessageChannel', () => {
  let mockPg = {} as any
  beforeEach(() => {
    jest.resetAllMocks()
    mockPg = {
      oneOrNone: jest.fn(),
      one: jest.fn(),
      none: jest.fn(),
    }
    ;(supabaseInit.createSupabaseDirectClient as jest.Mock).mockReturnValue(mockPg)
    ;(admin.auth as jest.Mock).mockReturnValue({
      getUser: jest.fn().mockResolvedValue({emailVerified: true}),
    })
  })
  afterEach(() => {
    jest.restoreAllMocks()
  })

  describe('when given valid input', () => {
    it('should successfully create a private user message channel (currentChannel)', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockUserIds = ['123', '321']
      const mockPrivateUsers = [
        {
          id: '123',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
        {
          id: '321',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
      ]
      const mockCurrentChannel = {
        channel_id: '444',
        allow_direct_messaging: true,
      }
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any
      const mockCreator = {
        is_banned_from_posting: false,
      }

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(mockCreator)
      ;(utilArrayModules.filterDefined as jest.Mock).mockReturnValue(mockPrivateUsers)
      ;(mockPg.oneOrNone as jest.Mock).mockResolvedValue(mockCurrentChannel)

      const results = await createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)

      expect(results.status).toBe('success')
      expect(results.channelId).toBe(444)
      expect(sharedUtils.getUser).toBeCalledTimes(1)
      expect(sharedUtils.getUser).toBeCalledWith(mockAuth.uid)
      expect(sharedUtils.getPrivateUser).toBeCalledTimes(2)
      expect(sharedUtils.getPrivateUser).toBeCalledWith(mockUserIds[0])
      expect(sharedUtils.getPrivateUser).toBeCalledWith(mockUserIds[1])
      expect(mockPg.oneOrNone).toBeCalledTimes(3)
      expect(mockPg.oneOrNone).toBeCalledWith(
        sqlMatch('select channel_id from private_user_message_channel_members'),
        [mockUserIds],
      )
    })

    it('should successfully create a private user message channel (channel)', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockUserIds = ['123', '321']
      const mockPrivateUsers = [
        {
          id: '123',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
        {
          id: '321',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
      ]
      const mockChannel = {
        id: '333',
      }
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any
      const mockCreator = {
        is_banned_from_posting: false,
      }

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(mockCreator)
      ;(utilArrayModules.filterDefined as jest.Mock).mockReturnValue(mockPrivateUsers)
      ;(mockPg.oneOrNone as jest.Mock).mockResolvedValue(false)
      ;(mockPg.one as jest.Mock).mockResolvedValue(mockChannel)

      const results = await createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)

      expect(results.status).toBe('success')
      expect(results.channelId).toBe(333)
      expect(sharedUtils.getUser).toBeCalledTimes(1)
      expect(sharedUtils.getUser).toBeCalledWith(mockAuth.uid)
      expect(sharedUtils.getPrivateUser).toBeCalledTimes(2)
      expect(sharedUtils.getPrivateUser).toBeCalledWith(mockUserIds[0])
      expect(sharedUtils.getPrivateUser).toBeCalledWith(mockUserIds[1])
      expect(mockPg.one).toBeCalledTimes(1)
      expect(mockPg.one).toBeCalledWith(
        sqlMatch(
          'insert into private_user_message_channels default\n     values\n     returning id',
        ),
      )
      expect(mockPg.none).toBeCalledTimes(1)
      expect(mockPg.none).toBeCalledWith(
        sqlMatch(
          'insert into private_user_message_channel_members (channel_id, user_id, role, status)',
        ),
        [mockChannel.id, mockAuth.uid],
      )
      expect(privateMessageModules.addUsersToPrivateMessageChannel).toBeCalledTimes(1)
      expect(privateMessageModules.addUsersToPrivateMessageChannel).toBeCalledWith(
        [mockUserIds[0]],
        mockChannel.id,
        expect.any(Object),
      )
    })
  })

  describe('when an error occurs', () => {
    it('should throw if user email is not verified', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any

      ;(admin.auth as jest.Mock).mockReturnValue({
        getUser: jest.fn().mockResolvedValue({emailVerified: false}),
      })

      expect(createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)).rejects.toThrowError(
        'You must verify your email to contact people.',
      )

      expect(admin.auth().getUser).toHaveBeenCalledWith(mockAuth.uid)
    })

    it('should throw if the user account doesnt exist', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(false)

      expect(createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)).rejects.toThrowError(
        'Your account was not found',
      )
    })

    it('should throw if the authId is banned from posting', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any
      const mockCreator = {
        isBannedFromPosting: true,
      }

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(mockCreator)

      expect(createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)).rejects.toThrowError(
        'You are banned',
      )
    })

    it('should throw if the array lengths dont match (privateUsers, userIds)', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockPrivateUsers = [
        {
          id: '123',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
      ]
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any
      const mockCreator = {
        isBannedFromPosting: false,
      }

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(mockCreator)
      ;(utilArrayModules.filterDefined as jest.Mock).mockReturnValue(mockPrivateUsers)

      expect(createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)).rejects.toThrowError(
        `Private user ${mockAuth.uid} not found`,
      )
    })

    it('should throw if there is a blocked user in the userId list', async () => {
      const mockBody = {
        userIds: ['123'],
      }
      const mockPrivateUsers = [
        {
          id: '123',
          blockedUserIds: ['111'],
          blockedByUserIds: [],
        },
        {
          id: '321',
          blockedUserIds: ['123'],
          blockedByUserIds: [],
        },
      ]
      const mockAuth = {uid: '321'} as AuthedUser
      const mockReq = {} as any
      const mockCreator = {
        isBannedFromPosting: false,
      }

      ;(sharedUtils.getUser as jest.Mock).mockResolvedValue(mockCreator)
      ;(utilArrayModules.filterDefined as jest.Mock).mockReturnValue(mockPrivateUsers)

      expect(createPrivateUserMessageChannel(mockBody, mockAuth, mockReq)).rejects.toThrowError(
        `One of the users has blocked another user in the list`,
      )
    })
  })
})