import { get, post, put } from '@/utils/request'
import type { ApiResponse, SystemSettings } from '@/types'

// 获取系统设置
export const getSystemSettings = async (): Promise<{ success: boolean; data?: SystemSettings }> => {
  const data = await get<Record<string, unknown>>('/system-settings')
  // 将字符串 'true'/'false' 转换为布尔值
  const booleanFields = ['registration_enabled', 'show_default_login_info', 'login_captcha_enabled', 'smtp_use_tls', 'smtp_use_ssl']
  const converted: SystemSettings = {}
  for (const [key, value] of Object.entries(data)) {
    if (booleanFields.includes(key)) {
      converted[key] = value === true || value === 'true'
    } else {
      converted[key] = value
    }
  }
  return { success: true, data: converted }
}

// 更新系统设置
export const updateSystemSettings = async (data: Partial<SystemSettings>): Promise<ApiResponse> => {
  // 逐个更新设置项，确保 value 是字符串
  const promises = Object.entries(data)
    .filter(([, value]) => value !== undefined && value !== null) // 过滤掉空值
    .map(([key, value]) => {
      // 将布尔值和数字转换为字符串
      let stringValue: string
      if (typeof value === 'boolean') {
        stringValue = value ? 'true' : 'false'
      } else if (typeof value === 'number') {
        stringValue = String(value)
      } else {
        stringValue = String(value ?? '')
      }
      return put(`/system-settings/${key}`, { value: stringValue })
    })

  try {
    await Promise.all(promises)
    return { success: true, message: '设置已保存' }
  } catch (error) {
    console.error('保存设置失败:', error)
    return { success: false, message: '保存设置失败' }
  }
}

// 获取 AI 设置
export const getAISettings = (): Promise<{ success: boolean; data?: Record<string, unknown> }> => {
  return get('/ai-reply-settings')
}

// 更新 AI 设置
export const updateAISettings = (data: Record<string, unknown>): Promise<ApiResponse> => {
  return put('/ai-reply-settings', data)
}

// 测试 AI 连接 - 需要指定 cookie_id
export const testAIConnection = async (cookieId?: string): Promise<ApiResponse> => {
  if (!cookieId) {
    return { success: false, message: '请先选择一个账号进行测试' }
  }
  try {
    const result = await post<{ success?: boolean; message?: string; reply?: string }>(`/ai-reply-test/${cookieId}`, {
      message: '你好，这是一条测试消息',
    })
    if (result.reply) {
      return { success: true, message: `AI 回复: ${result.reply}` }
    }
    return { success: result.success ?? true, message: result.message || 'AI 连接测试成功' }
  } catch (error: unknown) {
    // 提取后端返回的错误信息
    const axiosError = error as { response?: { data?: { detail?: string; message?: string } } }
    const detail = axiosError.response?.data?.detail || axiosError.response?.data?.message
    return { success: false, message: detail || 'AI 连接测试失败' }
  }
}

// 获取邮件设置
export const getEmailSettings = (): Promise<{ success: boolean; data?: Record<string, unknown> }> => {
  return get('/system-settings')
}

// 更新邮件设置
export const updateEmailSettings = (data: Record<string, unknown>): Promise<ApiResponse> => {
  const promises = Object.entries(data).map(([key, value]) =>
    put(`/system-settings/${key}`, { value }),
  )
  return Promise.all(promises).then(() => ({ success: true, message: '设置已保存' }))
}

// 测试邮件发送功能
export const testEmailSend = async (email: string): Promise<ApiResponse> => {
  try {
    const result = await post<ApiResponse>(`/system-settings/test-email?email=${encodeURIComponent(email)}`)
    return result
  } catch (error: unknown) {
    const axiosError = error as { response?: { data?: { detail?: string; message?: string } } }
    const detail = axiosError.response?.data?.detail || axiosError.response?.data?.message
    return { success: false, message: detail || '发送测试邮件失败' }
  }
}

// 修改密码（普通用户）
export const changePassword = async (data: { current_password: string; new_password: string }): Promise<ApiResponse> => {
  return post('/change-password', data)
}

// 获取备份文件列表（管理员）
export const getBackupList = async (): Promise<{ backups: Array<{ filename: string; size: number; size_mb: number; modified_time: string }>; total: number }> => {
  return get('/admin/backup/list')
}

// 下载数据库备份（管理员）
export const downloadDatabaseBackup = (): string => {
  const token = localStorage.getItem('auth_token')
  return `/admin/backup/download?token=${token}`
}

// 上传数据库备份（管理员）
export const uploadDatabaseBackup = async (file: File): Promise<ApiResponse> => {
  const formData = new FormData()
  formData.append('backup_file', file)
  return post('/admin/backup/upload', formData)
}

// 刷新系统缓存
export const reloadSystemCache = async (): Promise<ApiResponse> => {
  return post('/admin/reload-cache')
}

// 导出用户备份
export const exportUserBackup = (): string => {
  const token = localStorage.getItem('auth_token')
  return `/backup/export?token=${token}`
}

// 导入用户备份
export const importUserBackup = async (file: File): Promise<ApiResponse> => {
  const formData = new FormData()
  formData.append('file', file)
  return post('/backup/import', formData)
}

// ========== 用户设置 ==========

export interface UserSettings {
  [key: string]: {
    value: string
    description?: string
    updated_at?: string
  }
}

// 获取用户设置
export const getUserSettings = async (): Promise<{ success: boolean; data?: UserSettings }> => {
  const data = await get<UserSettings>('/user-settings')
  return { success: true, data }
}

// 获取单个用户设置
export const getUserSetting = async (key: string): Promise<{ success: boolean; value?: string }> => {
  try {
    const data = await get<{ value: string }>(`/user-settings/${key}`)
    return { success: true, value: data.value }
  } catch {
    return { success: false }
  }
}

// 更新用户设置
export const updateUserSetting = async (key: string, value: string, description?: string): Promise<ApiResponse> => {
  return put(`/user-settings/${key}`, { value, description })
}

// 检查是否使用默认密码
export const checkDefaultPassword = async (): Promise<{ using_default: boolean }> => {
  try {
    const result = await get<{ using_default: boolean }>('/api/check-default-password')
    console.log('checkDefaultPassword result:', result)
    return result
  } catch (error) {
    console.error('checkDefaultPassword error:', error)
    return { using_default: false }
  }
}
