import { describe, expect, it } from 'vitest'
import type { Environment } from '../env.js'
import type { AuthConfig } from './index.js'
import { auth, createAuth } from './index.js'

describe('auth Module', () => {
  describe('createAuth', () => {
    it('should create auth config with provided environment variables', () => {
      const mockEnv: Environment = {
        BETTER_AUTH_SECRET: 'test-secret',
        BETTER_AUTH_URL: 'https://example.com',
        DB: {} as D1Database,
        NODE_ENV: 'test',
        LOG_LEVEL: 'info',
      }

      const config = createAuth(mockEnv)

      expect(config).toEqual({
        secret: 'test-secret',
        baseURL: 'https://example.com',
        database: mockEnv.DB,
        session: {
          expiresIn: 60 * 60 * 24 * 7, // 7 days
          updateAge: 60 * 60 * 24, // 1 day
        },
      })
    })

    it('should use default values when environment variables are not provided', () => {
      const mockEnv: Environment = {
        NODE_ENV: 'development',
        LOG_LEVEL: 'debug',
      } as Environment

      const config = createAuth(mockEnv)

      expect(config.secret).toBe('default-secret-for-development')
      expect(config.baseURL).toBe('http://localhost:8787')
      expect(config.database).toBeUndefined()
      expect(config.session).toEqual({
        expiresIn: 60 * 60 * 24 * 7,
        updateAge: 60 * 60 * 24,
      })
    })

    it('should handle partial environment configuration', () => {
      const mockEnv: Environment = {
        BETTER_AUTH_SECRET: 'partial-secret',
        NODE_ENV: 'test',
        LOG_LEVEL: 'info',
      } as Environment

      const config = createAuth(mockEnv)

      expect(config.secret).toBe('partial-secret')
      expect(config.baseURL).toBe('http://localhost:8787')
    })
  })

  describe('auth utilities', () => {
    describe('verifySession', () => {
      it('should return null for session verification (placeholder)', async () => {
        const result = await auth.verifySession('test-token')
        expect(result).toBeNull()
      })

      it('should handle empty token', async () => {
        const result = await auth.verifySession('')
        expect(result).toBeNull()
      })
    })

    describe('createSession', () => {
      it('should return null for session creation (placeholder)', async () => {
        const result = await auth.createSession('user-123')
        expect(result).toBeNull()
      })

      it('should handle empty userId', async () => {
        const result = await auth.createSession('')
        expect(result).toBeNull()
      })
    })

    describe('destroySession', () => {
      it('should return true for session destruction (placeholder)', async () => {
        const result = await auth.destroySession('test-token')
        expect(result).toBe(true)
      })

      it('should handle empty token', async () => {
        const result = await auth.destroySession('')
        expect(result).toBe(true)
      })
    })
  })

  describe('authConfig interface', () => {
    it('should accept valid auth config', () => {
      const config: AuthConfig = {
        secret: 'test-secret',
        baseURL: 'https://api.example.com',
        database: {} as D1Database,
        session: {
          expiresIn: 3600,
          updateAge: 1800,
        },
      }

      expect(config.secret).toBe('test-secret')
      expect(config.baseURL).toBe('https://api.example.com')
      expect(config.session?.expiresIn).toBe(3600)
      expect(config.session?.updateAge).toBe(1800)
    })

    it('should work with minimal config', () => {
      const config: AuthConfig = {
        secret: 'minimal-secret',
        baseURL: 'http://localhost:3000',
      }

      expect(config.secret).toBe('minimal-secret')
      expect(config.baseURL).toBe('http://localhost:3000')
      expect(config.database).toBeUndefined()
      expect(config.session).toBeUndefined()
    })
  })
})