import { NextRequest } from 'next/server'
import { GET, PUT } from '../route'
import { POST as uploadLogo } from '../upload-logo/route'

jest.mock('@/lib/auth', () => ({
  authOptions: {},
}))

jest.mock('next-auth', () => ({
  getServerSession: jest.fn(),
}))

jest.mock('@/lib/prisma', () => ({
  prisma: {
    systemSettings: {
      findFirst: jest.fn(),
      create: jest.fn(),
      update: jest.fn(),
    },
    user: {
      findUnique: jest.fn(),
    },
    $queryRaw: jest.fn(),
    $executeRawUnsafe: jest.fn(),
  },
}))

jest.mock('@/lib/cache', () => ({
  cache: {
    get: jest.fn(),
    set: jest.fn(),
    delete: jest.fn(),
  },
}))

jest.mock('@/lib/system-settings-columns', () => ({
  ensureSystemSettingsOptionalColumns: jest.fn(),
}))

jest.mock('@/lib/config', () => ({
  defaultLogos: {
    header: '/logo/header.png',
    login: '/logo/login.png',
  },
  featureFlags: {
    aiEditEnabled: false,
    tunnelEnabled: false,
  },
}))

jest.mock('@/lib/license', () => ({
  canUseSystemSettings: jest.fn(),
}))

jest.mock('@/lib/s3', () => ({
  uploadToS3: jest.fn(),
}))

jest.mock('@/lib/image-processor', () => ({
  processImage: jest.fn(),
}))

const { getServerSession } = require('next-auth')
const { prisma } = require('@/lib/prisma')
const { cache } = require('@/lib/cache')
const { canUseSystemSettings } = require('@/lib/license')
const { uploadToS3 } = require('@/lib/s3')
const { processImage } = require('@/lib/image-processor')
const { ensureSystemSettingsOptionalColumns } = require('@/lib/system-settings-columns')

const mockSettings = {
  id: 'settings-1',
  headerBgColor: '#1f2937',
  siteName: 'FLNXI素材库',
  premiumRatio: 10,
  updatedAt: new Date('2026-05-24T00:00:00.000Z'),
  createdAt: new Date('2026-05-23T00:00:00.000Z'),
  headerLogoUrl: '/logo/header.png',
  loginLogoUrl: '/logo/login.png',
  s3AccessKey: 'access-key',
  s3Bucket: 'private-bucket',
  s3Endpoint: 'http://minio:9000',
  s3PublicUrl: 'http://minio.local/materials',
  s3Region: 'us-east-1',
  s3SecretKey: 'secret-key',
  enableRegistration: true,
  enableUserActivation: false,
  enableAiImageEdit: true,
  enableTunnelService: true,
  enablePublicShare: true,
}

describe('GET /api/system-settings', () => {
  const originalEnv = process.env

  beforeEach(() => {
    jest.resetAllMocks()
    process.env = { ...originalEnv }
    cache.get.mockReturnValue(null)
    prisma.systemSettings.findFirst.mockResolvedValue({ ...mockSettings })
    prisma.$queryRaw.mockResolvedValue([
      {
        enabledBuiltinTemplates: '["3dmax-material"]',
        homeDeleteButtonMode: 'ADMIN_ONLY',
        premiumRatio: 10,
      },
    ])
  })

  afterAll(() => {
    process.env = originalEnv
  })

  it('未登录时只返回公开展示字段，不返回对象存储和功能开关', async () => {
    getServerSession.mockResolvedValue(null)

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data).toMatchObject({
      headerBgColor: '#1f2937',
      siteName: 'FLNXI素材库',
      headerLogoUrl: '/logo/header.png',
      loginLogoUrl: '/logo/login.png',
    })
    expect(data.s3AccessKey).toBeUndefined()
    expect(data.s3SecretKey).toBeUndefined()
    expect(data.s3Bucket).toBeUndefined()
    expect(data.s3Endpoint).toBeUndefined()
    expect(data.enableRegistration).toBeUndefined()
    expect(data.enableUserActivation).toBeUndefined()
    expect(data.enableAiImageEdit).toBeUndefined()
    expect(data.enableTunnelService).toBeUndefined()
    expect(data.enablePublicShare).toBeUndefined()
    expect(data.enabledBuiltinTemplates).toBeUndefined()
    expect(data.homeDeleteButtonMode).toBeUndefined()
    expect(ensureSystemSettingsOptionalColumns).not.toHaveBeenCalled()
    expect(prisma.systemSettings.create).not.toHaveBeenCalled()
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('普通管理员登录时返回后台设置但不返回对象存储密钥', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'admin-id', role: 'ADMIN', isSuperAdmin: false },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: false })

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.s3AccessKey).toBeUndefined()
    expect(data.s3SecretKey).toBeUndefined()
    expect(data.s3Bucket).toBe('private-bucket')
    expect(data.enableRegistration).toBe(true)
    expect(data.enableAiImageEdit).toBe(true)
    expect(data.enablePublicShare).toBe(true)
    expect(data.enabledBuiltinTemplates).toBe('["3dmax-material"]')
    expect(data.homeDeleteButtonMode).toBe('ADMIN_ONLY')
  })

  it('最高权限账号登录时才返回对象存储密钥', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'super-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: true })

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.s3AccessKey).toBe('access-key')
    expect(data.s3SecretKey).toBe('secret-key')
    expect(data.s3Bucket).toBe('private-bucket')
  })

  it('GET 不会用环境变量补写对象存储密钥', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.systemSettings.findFirst.mockResolvedValue({
      ...mockSettings,
      s3AccessKey: null,
      s3SecretKey: null,
      s3Bucket: null,
      s3Endpoint: null,
      s3PublicUrl: null,
    })
    process.env.S3_ACCESS_KEY_ID = 'env-access-key'
    process.env.S3_SECRET_ACCESS_KEY = 'env-secret-key'
    process.env.S3_BUCKET = 'env-bucket'
    process.env.S3_ENDPOINT = 'http://env-minio:9000'

    await GET()

    expect(prisma.systemSettings.update).not.toHaveBeenCalledWith(
      expect.objectContaining({
        data: expect.objectContaining({
          s3AccessKey: expect.any(String),
        }),
      }),
    )
    expect(prisma.systemSettings.update).not.toHaveBeenCalledWith(
      expect.objectContaining({
        data: expect.objectContaining({
          s3SecretKey: expect.any(String),
        }),
      }),
    )
  })

  it('GET 没有系统设置记录时只返回内存默认值，不创建数据库记录', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.systemSettings.findFirst.mockResolvedValue(null)

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data).toMatchObject({
      headerBgColor: '#1f2937',
      siteName: 'FLNXI素材库',
      headerLogoUrl: '',
      loginLogoUrl: '',
    })
    expect(ensureSystemSettingsOptionalColumns).not.toHaveBeenCalled()
    expect(prisma.systemSettings.create).not.toHaveBeenCalled()
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('GET 只在响应中整理旧 Logo，不写回数据库', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.systemSettings.findFirst.mockResolvedValue({
      ...mockSettings,
      headerLogoUrl: '/logo/logo1.png',
      loginLogoUrl: '',
    })

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.headerLogoUrl).toBe('/logo/header.png')
    expect(data.loginLogoUrl).toBe('/logo/login.png')
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('数据库异常时，未登录读取会返回公共兜底设置而不是 500', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.systemSettings.findFirst.mockRejectedValue(new Error('database offline'))

    const response = await GET()
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data).toMatchObject({
      headerBgColor: '#1f2937',
      siteName: 'FLNXI素材库',
      headerLogoUrl: '',
      loginLogoUrl: '',
    })
  })
})

describe('PUT /api/system-settings 权限边界', () => {
  beforeEach(() => {
    jest.resetAllMocks()
    cache.get.mockReturnValue(null)
    canUseSystemSettings.mockResolvedValue(true)
    prisma.systemSettings.findFirst.mockResolvedValue({ ...mockSettings })
    prisma.systemSettings.update.mockResolvedValue({
      ...mockSettings,
      siteName: '新系统名',
    })
  })

  it('普通管理员不能修改任何系统设置', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'admin-id', role: 'ADMIN', isSuperAdmin: false },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: false })

    const response = await PUT(new NextRequest('http://localhost/api/system-settings', {
      method: 'PUT',
      body: JSON.stringify({
        siteName: '普通管理员不应能改',
        s3SecretKey: 'new-secret',
        enableRegistration: false,
        enablePublicShare: false,
      }),
    }))
    const data = await response.json()

    expect(response.status).toBe(403)
    expect(data.error).toContain('最高权限')
    expect(ensureSystemSettingsOptionalColumns).toHaveBeenCalled()
    expect(canUseSystemSettings).not.toHaveBeenCalled()
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('旧会话仍带最高权限标记但数据库已撤销时不能修改系统设置', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'admin-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: false })

    const response = await PUT(new NextRequest('http://localhost/api/system-settings', {
      method: 'PUT',
      body: JSON.stringify({ siteName: '不应写入' }),
    }))

    expect(response.status).toBe(403)
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('最高权限账号可以修改系统设置', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'super-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: true })

    const response = await PUT(new NextRequest('http://localhost/api/system-settings', {
      method: 'PUT',
      body: JSON.stringify({
        siteName: '新系统名',
        s3SecretKey: 'new-secret',
        enableRegistration: false,
        enablePublicShare: false,
      }),
    }))
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.siteName).toBe('新系统名')
    expect(prisma.systemSettings.update).toHaveBeenCalledWith({
      where: { id: 'settings-1' },
      data: expect.objectContaining({
        siteName: '新系统名',
        s3SecretKey: 'new-secret',
        enableRegistration: false,
      }),
    })
    expect(prisma.$executeRawUnsafe).toHaveBeenCalledWith(
      `UPDATE "system_settings" SET "enablePublicShare" = $1 WHERE "id" = $2`,
      false,
      'settings-1',
    )
  })
})

describe('POST /api/system-settings/upload-logo 权限边界', () => {
  beforeEach(() => {
    jest.resetAllMocks()
    processImage.mockResolvedValue(Buffer.from('processed-logo'))
    uploadToS3.mockResolvedValue('https://cdn.example.com/header-logo.png')
    prisma.systemSettings.findFirst.mockResolvedValue({ ...mockSettings })
    prisma.systemSettings.update.mockResolvedValue({
      ...mockSettings,
      headerLogoUrl: 'https://cdn.example.com/header-logo.png',
    })
  })

  function createLogoRequest() {
    const formData = new FormData()
    formData.set('type', 'header')
    formData.set('logo', new File([Buffer.from('logo')], 'logo.png', { type: 'image/png' }))
    return new NextRequest('http://localhost/api/system-settings/upload-logo', {
      method: 'POST',
      body: formData,
    })
  }

  it('普通管理员不能上传系统 LOGO', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'admin-id', role: 'ADMIN', isSuperAdmin: false },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: false })

    const response = await uploadLogo(createLogoRequest())
    const data = await response.json()

    expect(response.status).toBe(403)
    expect(data.error).toContain('最高权限')
    expect(uploadToS3).not.toHaveBeenCalled()
    expect(prisma.systemSettings.update).not.toHaveBeenCalled()
  })

  it('最高权限账号可以上传系统 LOGO', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'super-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: true })

    const response = await uploadLogo(createLogoRequest())
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.logoUrl).toBe('https://cdn.example.com/header-logo.png')
    expect(processImage).toHaveBeenCalledWith(expect.any(Buffer), {
      maxSizeKB: 300,
      maxWidth: 1200,
      maxHeight: 400,
      format: 'webp',
    })
    expect(uploadToS3).toHaveBeenCalledWith(
      Buffer.from('processed-logo'),
      expect.stringMatching(/^header-logo-\d+\.webp$/),
      'image/webp'
    )
    expect(prisma.systemSettings.update).toHaveBeenCalledWith({
      where: { id: 'settings-1' },
      data: { headerLogoUrl: 'https://cdn.example.com/header-logo.png' },
    })
  })

  it('拒绝 SVG 或非白名单图片格式', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'super-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: true })

    const formData = new FormData()
    formData.set('type', 'header')
    formData.set('logo', new File([Buffer.from('<svg />')], 'logo.svg', { type: 'image/svg+xml' }))

    const response = await uploadLogo(new NextRequest('http://localhost/api/system-settings/upload-logo', {
      method: 'POST',
      body: formData,
    }))
    const data = await response.json()

    expect(response.status).toBe(400)
    expect(data.error).toContain('JPG、PNG 或 WebP')
    expect(processImage).not.toHaveBeenCalled()
    expect(uploadToS3).not.toHaveBeenCalled()
  })

  it('拒绝超过 5MB 的 LOGO 图片', async () => {
    getServerSession.mockResolvedValue({
      user: { id: 'super-id', role: 'ADMIN', isSuperAdmin: true },
    })
    prisma.user.findUnique.mockResolvedValue({ isSuperAdmin: true })

    const formData = new FormData()
    formData.set('type', 'header')
    formData.set('logo', new File([new Uint8Array(5 * 1024 * 1024 + 1)], 'large.png', { type: 'image/png' }))

    const response = await uploadLogo(new NextRequest('http://localhost/api/system-settings/upload-logo', {
      method: 'POST',
      body: formData,
    }))
    const data = await response.json()

    expect(response.status).toBe(400)
    expect(data.error).toContain('小于5MB')
    expect(processImage).not.toHaveBeenCalled()
    expect(uploadToS3).not.toHaveBeenCalled()
  })
})