import { describe, expect, it, beforeEach, mock } from 'bun:test'
import { UnauthenticatedError, InternalServerError } from '~/helpers/errors'

// Mock dependencies
mock.module('@/user/queries/query', () => ({
  default: {
    getUserByEmail: mock(async (email: string) => {
      if (email === 'test@example.com') {
        return {
          id: 'user-123',
          name: 'Test User',
          email: 'test@example.com',
          role: 'admin',
          image: null,
          googleId: null,
          password: '$2a$10$mockhashedpassword',
        }
      }
      if (email === 'volunteer@example.com') {
        return {
          id: 'volunteer-123',
          name: 'Test Volunteer',
          email: 'volunteer@example.com',
          role: 'volunteer',
          image: null,
          googleId: null,
          password: '$2a$10$mockhashedpassword',
        }
      }
      return null
    }),
    getVolunteerById: mock(async ({ id }: { id: string }) => {
      if (id === 'volunteer-123') {
        return {
          id: 'vol-456',
          partnerId: 'partner-789',
          name: 'Test Volunteer',
          phone: '+1234567890',
          gender: 'male',
        }
      }
      return null
    }),
  },
}))

mock.module('~/helpers/utils', () => ({
  passwordVerify: mock((password: string, _hash: string) => {
    return password === 'correctpassword'
  }),
}))

mock.module('~/helpers/jwt', () => ({
  sign: mock(async (payload: unknown) => {
    return `jwt.token.${Buffer.from(JSON.stringify(payload)).toString('base64')}`
  }),
}))

mock.module('~/plugins', () => ({
  logger: {
    debug: mock(() => undefined),
    info: mock(() => undefined),
  },
}))

import CommandService from '~/modules/auth/commands/service'

describe('Auth CommandService', () => {
  beforeEach(() => {
    // Reset all mocks before each test
    mock.restore()

    // Reapply main mocks
    mock.module('@/user/queries/query', () => ({
      default: {
        getUserByEmail: mock(async (email: string) => {
          if (email === 'test@example.com') {
            return {
              id: 'user-123',
              name: 'Test User',
              email: 'test@example.com',
              role: 'admin',
              image: null,
              googleId: null,
              password: '$2a$10$mockhashedpassword',
            }
          }
          if (email === 'volunteer@example.com') {
            return {
              id: 'volunteer-123',
              name: 'Test Volunteer',
              email: 'volunteer@example.com',
              role: 'volunteer',
              image: null,
              googleId: null,
              password: '$2a$10$mockhashedpassword',
            }
          }
          return null
        }),
        getVolunteerById: mock(async ({ id }: { id: string }) => {
          if (id === 'volunteer-123') {
            return {
              id: 'vol-456',
              partnerId: 'partner-789',
              name: 'Test Volunteer',
              phone: '+1234567890',
              gender: 'male',
            }
          }
          return null
        }),
      },
    }))

    mock.module('~/helpers/utils', () => ({
      passwordVerify: mock((password: string, hash: string) => {
        return password === 'correctpassword'
      }),
    }))

    mock.module('~/helpers/jwt', () => ({
      sign: mock(async (payload: any) => {
        return `jwt.token.${Buffer.from(JSON.stringify(payload)).toString('base64')}`
      }),
    }))

    mock.module('~/plugins', () => ({
      logger: {
        debug: mock(() => {}),
        info: mock(() => {}),
      },
    }))
  })

  describe('login', () => {
    it('should login successfully with valid credentials', async () => {
      const result = await CommandService.login({
        email: 'test@example.com',
        password: 'correctpassword',
      })

      expect(result).toHaveProperty('accessToken')
      expect(typeof result.accessToken).toBe('string')
      expect(result.accessToken).toMatch(/^jwt\.token\./)
    })

    it('should throw UnauthenticatedError for non-existent user', async () => {
      expect(async () => {
        await CommandService.login({
          email: 'nonexistent@example.com',
          password: 'anypassword',
        })
      }).toThrow(UnauthenticatedError)
    })

    it('should throw UnauthenticatedError for incorrect password', async () => {
      expect(async () => {
        await CommandService.login({
          email: 'test@example.com',
          password: 'wrongpassword',
        })
      }).toThrow(UnauthenticatedError)
    })

    it('should login volunteer user successfully', async () => {
      const result = await CommandService.login({
        email: 'volunteer@example.com',
        password: 'correctpassword',
      })

      expect(result).toHaveProperty('accessToken')
      expect(typeof result.accessToken).toBe('string')

      // Decode the JWT payload to verify volunteer data is included
      const payloadBase64 = result.accessToken.split('.')[2]
      const payload = JSON.parse(Buffer.from(payloadBase64, 'base64').toString())
      expect(payload.user).toHaveProperty('volunteer')
      expect(payload.user.volunteer.id).toBe('vol-456')
    })

    it('should throw InternalServerError when volunteer detail not found', async () => {
      // Mock getUserByEmail to return a volunteer user but getVolunteerById to return null
      const mockUserQuery = await import('~/modules/user/queries/query')
      mockUserQuery.default.getUserByEmail = mock(async () => ({
        id: 'volunteer-without-detail',
        name: 'Volunteer Without Detail',
        email: 'volunteer-no-detail@example.com',
        role: 'volunteer',
        image: null,
        googleId: null,
        password: '$2a$10$mockhashedpassword',
      })) as any
      mockUserQuery.default.getVolunteerById = mock(async () => null) as any

      expect(async () => {
        await CommandService.login({
          email: 'volunteer-no-detail@example.com',
          password: 'correctpassword',
        })
      }).toThrow(InternalServerError)
    })

    it('should generate unique sub for each login', async () => {
      const result1 = await CommandService.login({
        email: 'test@example.com',
        password: 'correctpassword',
      })

      // Wait a millisecond to ensure different timestamp
      await new Promise((resolve) => setTimeout(resolve, 1))

      const result2 = await CommandService.login({
        email: 'test@example.com',
        password: 'correctpassword',
      })

      // Decode both tokens to compare sub values
      const payload1Base64 = result1.accessToken.split('.')[2]
      const payload1 = JSON.parse(Buffer.from(payload1Base64, 'base64').toString())

      const payload2Base64 = result2.accessToken.split('.')[2]
      const payload2 = JSON.parse(Buffer.from(payload2Base64, 'base64').toString())

      expect(payload1.sub).not.toBe(payload2.sub)
    })

    it('should include correct user data in JWT payload', async () => {
      const result = await CommandService.login({
        email: 'test@example.com',
        password: 'correctpassword',
      })

      const payloadBase64 = result.accessToken.split('.')[2]
      const payload = JSON.parse(Buffer.from(payloadBase64, 'base64').toString())

      expect(payload.user.id).toBe('user-123')
      expect(payload.user.name).toBe('Test User')
      expect(payload.user.email).toBe('test@example.com')
      expect(payload.user.role).toBe('admin')
      expect(payload.user).not.toHaveProperty('password')
    })
  })
})