/**
 * 用户相关模拟数据 - 框架版
 */
import type {
  LoginParams,
  LoginResult,
  CaptchaResult,
  UserInfo
} from '@/types'

// 模拟验证码
const captchaCodes: Map<string, string> = new Map()

// 模拟用户数据
const mockUsers: Array<{ username: string; password: string; userInfo: UserInfo }> = [
  {
    username: 'admin',
    password: '123456',
    userInfo: {
      id: 1,
      username: 'admin',
      nickname: '超级管理员',
      avatar: 'https://api.dicebear.com/7.x/avataaars/svg?seed=admin',
      email: 'admin@example.com',
      phone: '13800138000',
      role: 'admin',
      permissions: ['*'],
      createTime: '2024-01-01 00:00:00',
      lastLoginTime: new Date().toLocaleString()
    }
  },
  {
    username: 'user',
    password: '123456',
    userInfo: {
      id: 2,
      username: 'user',
      nickname: '普通用户',
      avatar: 'https://api.dicebear.com/7.x/avataaars/svg?seed=user',
      email: 'user@example.com',
      phone: '13900139000',
      role: 'user',
      permissions: ['read'],
      createTime: '2024-06-01 00:00:00',
      lastLoginTime: new Date().toLocaleString()
    }
  }
]

// 生成随机验证码
function generateCaptcha(): string {
  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789'
  let code = ''
  for (let i = 0; i < 4; i++) {
    code += chars.charAt(Math.floor(Math.random() * chars.length))
  }
  return code
}

// 生成SVG验证码图片
function generateCaptchaSvg(code: string): string {
  const colors = ['#f56a00', '#7265e6', '#ffbf00', '#00a2ae', '#1890ff']
  let svg = `<svg xmlns="http://www.w3.org/2000/svg" width="120" height="40" viewBox="0 0 120 40">`
  svg += `<rect width="120" height="40" fill="#f0f2f5"/>`
  
  // 添加干扰线
  for (let i = 0; i < 4; i++) {
    const x1 = Math.random() * 120
    const y1 = Math.random() * 40
    const x2 = Math.random() * 120
    const y2 = Math.random() * 40
    const color = colors[Math.floor(Math.random() * colors.length)]
    svg += `<line x1="${x1}" y1="${y1}" x2="${x2}" y2="${y2}" stroke="${color}" stroke-width="1"/>`
  }
  
  // 添加验证码文字
  for (let i = 0; i < code.length; i++) {
    const x = 15 + i * 25
    const y = 28 + Math.random() * 6 - 3
    const rotate = Math.random() * 30 - 15
    const color = colors[Math.floor(Math.random() * colors.length)]
    svg += `<text x="${x}" y="${y}" fill="${color}" font-size="22" font-weight="bold" transform="rotate(${rotate} ${x} ${y})">${code[i]}</text>`
  }
  
  svg += `</svg>`
  return `data:image/svg+xml;base64,${btoa(svg)}`
}

// 模拟延迟
function delay(ms: number): Promise<void> {
  return new Promise(resolve => setTimeout(resolve, ms))
}

// 获取验证码
export async function mockGetCaptcha(): Promise<CaptchaResult> {
  await delay(300)
  const captchaKey = 'captcha_' + Date.now()
  const code = generateCaptcha()
  captchaCodes.set(captchaKey, code)
  
  // 5分钟后过期
  setTimeout(() => captchaCodes.delete(captchaKey), 5 * 60 * 1000)
  
  return {
    captchaKey,
    captchaImage: generateCaptchaSvg(code)
  }
}

// 登录
export async function mockLogin(params: LoginParams): Promise<LoginResult> {
  await delay(500)
  
  // 验证验证码
  const storedCode = captchaCodes.get(params.captchaKey)
  if (!storedCode || storedCode.toUpperCase() !== params.captcha.toUpperCase()) {
    throw new Error('验证码错误')
  }
  
  // 验证用户
  const user = mockUsers.find(
    u => u.username === params.username && u.password === params.password
  )
  
  if (!user) {
    throw new Error('用户名或密码错误')
  }
  
  // 删除已使用的验证码
  captchaCodes.delete(params.captchaKey)
  
  return {
    token: 'mock_token_' + Date.now(),
    refreshToken: 'mock_refresh_token_' + Date.now(),
    expires: Date.now() + 24 * 60 * 60 * 1000,
    userInfo: user.userInfo
  }
}

// 获取用户信息
export async function mockGetUserInfo(): Promise<UserInfo> {
  await delay(200)
  return mockUsers[0]!.userInfo
}