import { NextRequest } from 'next/server'
import { POST } from '../route'

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

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

jest.mock('@/lib/prisma', () => ({
  prisma: {
    user: {
      findFirst: jest.fn(),
    },
  },
}))

jest.mock('@/lib/system-integrity', () => ({
  BUILTIN_TEMPLATE_KEYS: ['3dmax-material'],
}))

jest.mock('@/lib/admin-permissions', () => ({
  isCurrentSuperAdmin: jest.fn(),
}))

jest.mock('@/lib/system-init', () => ({
  getSystemInitToken: jest.fn(() => 'init-token'),
  initializeSystem: jest.fn(),
}))

const { getServerSession } = require('next-auth')
const { prisma } = require('@/lib/prisma')
const { isCurrentSuperAdmin } = require('@/lib/admin-permissions')
const { getSystemInitToken, initializeSystem } = require('@/lib/system-init')

describe('POST /api/system/init', () => {
  beforeEach(() => {
    jest.resetAllMocks()
    getServerSession.mockResolvedValue({
      user: {
        id: 'admin-1',
        role: 'ADMIN',
        isSuperAdmin: true,
      },
    })
    prisma.user.findFirst.mockResolvedValue({ id: 'admin-1' })
    isCurrentSuperAdmin.mockResolvedValue(true)
    getSystemInitToken.mockReturnValue('init-token')
  })

  test('系统已有最高权限账号后，普通管理员不能触发初始化', async () => {
    getServerSession.mockResolvedValue({
      user: {
        id: 'admin-2',
        role: 'ADMIN',
        isSuperAdmin: false,
      },
    })
    prisma.user.findFirst.mockResolvedValue({ id: 'super-1' })
    isCurrentSuperAdmin.mockResolvedValue(false)

    const response = await POST(new NextRequest('http://localhost/api/system/init', { method: 'POST' }))
    const data = await response.json()

    expect(response.status).toBe(403)
    expect(data.error).toBe('系统已初始化，后续初始化操作需要最高权限账号登录')
    expect(initializeSystem).not.toHaveBeenCalled()
  })

  test('系统尚无最高权限账号时，必须携带初始化令牌', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.user.findFirst.mockResolvedValue(null)

    const response = await POST(new NextRequest('http://localhost/api/system/init', { method: 'POST' }))
    const data = await response.json()

    expect(response.status).toBe(401)
    expect(data.error).toBe('初始化令牌无效')
    expect(isCurrentSuperAdmin).not.toHaveBeenCalled()
    expect(initializeSystem).not.toHaveBeenCalled()
  })

  test('系统尚无最高权限账号时，正确初始化令牌可以触发首次初始化', async () => {
    getServerSession.mockResolvedValue(null)
    prisma.user.findFirst.mockResolvedValue(null)
    initializeSystem.mockResolvedValue({
      alreadyInitialized: false,
      initialized: true,
      admin: null,
      defaultDepartment: '默认部门',
      defaultCategory: '默认店铺',
      defaultScene: '默认场景',
      templates: {
        total: 1,
        created: 0,
        createdTemplates: [],
        errors: [],
      },
    })

    const response = await POST(new NextRequest('http://localhost/api/system/init', {
      method: 'POST',
      headers: { 'x-system-init-token': 'init-token' },
    }))

    expect(response.status).toBe(200)
    expect(isCurrentSuperAdmin).not.toHaveBeenCalled()
    expect(initializeSystem).toHaveBeenCalled()
  })

  test('环境变量来源的初始管理员密码不应在初始化响应中回显', async () => {
    initializeSystem.mockResolvedValue({
      alreadyInitialized: false,
      initialized: true,
      admin: {
        email: 'admin@local.flnxi',
        username: 'admin',
        created: true,
        upgraded: false,
        mustChangePassword: true,
        initialPassword: 'Env-Password-Should-Not-Return',
        passwordSource: 'environment',
      },
      defaultDepartment: '默认部门',
      defaultCategory: '默认店铺',
      defaultScene: '默认场景',
      templates: {
        total: 1,
        created: 0,
        createdTemplates: [],
        errors: [],
      },
    })

    const response = await POST(new NextRequest('http://localhost/api/system/init', { method: 'POST' }))
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.data.admin.initialPassword).toBeNull()
    expect(data.data.admin.passwordSource).toBe('environment')
  })

  test('系统生成的一次性管理员密码仍可在首次初始化响应中返回', async () => {
    initializeSystem.mockResolvedValue({
      alreadyInitialized: false,
      initialized: true,
      admin: {
        email: 'admin@local.flnxi',
        username: 'admin',
        created: true,
        upgraded: false,
        mustChangePassword: true,
        initialPassword: 'Generated-Password-123',
        passwordSource: 'generated',
      },
      defaultDepartment: '默认部门',
      defaultCategory: '默认店铺',
      defaultScene: '默认场景',
      templates: {
        total: 1,
        created: 0,
        createdTemplates: [],
        errors: [],
      },
    })

    const response = await POST(new NextRequest('http://localhost/api/system/init', { method: 'POST' }))
    const data = await response.json()

    expect(response.status).toBe(200)
    expect(data.data.admin.initialPassword).toBe('Generated-Password-123')
    expect(data.data.admin.passwordSource).toBe('generated')
  })
})