// 聊天相关接口定义

export interface ChatConversation {
  id: number
  name: string
  avatar: string
  lastMessage: string
  time: string
  unreadCount?: number
}

export interface ChatMessage {
  id: number
  type: 'user' | 'ai'
  content: string
  time: string
  isAudio?: boolean
  audioDuration?: string
}

export interface Character {
  id: number
  name: string
  description: string
  icon: string
}

// Mock 数据 - 会话列表
const mockConversations: ChatConversation[] = [
  {
    id: 1,
    name: '阳光知心伴伴',
    avatar: '🎤',
    lastMessage: '因为太阳光里面其实藏着七种颜色呀...',
    time: '14:31',
    unreadCount: 2
  },
  {
    id: 2,
    name: '智慧小博士',
    avatar: '📚',
    lastMessage: '好的，我来给你讲一个关于恐龙的故事...',
    time: '昨天'
  },
  {
    id: 3,
    name: '音乐小精灵',
    avatar: '🎵',
    lastMessage: '《拔萝卜》已经唱完啦，还要听别的吗？',
    time: '昨天'
  },
  {
    id: 4,
    name: '故事大王',
    avatar: '📖',
    lastMessage: '从前有一只勇敢的小兔子...',
    time: '周一'
  },
  {
    id: 5,
    name: '英语小老师',
    avatar: '🔤',
    lastMessage: 'Apple, A-P-P-L-E, apple!',
    time: '周一'
  }
]

// Mock 数据 - 消息列表
const mockMessages: Record<number, ChatMessage[]> = {
  1: [
    {
      id: 1,
      type: 'user',
      content: '天空为什么是蓝色的呀?',
      time: '今天 14:30'
    },
    {
      id: 2,
      type: 'ai',
      content: '因为太阳光里面其实藏着七种颜色呀。当光穿过大气层的时候，蓝色的光最调皮，到处乱跑，所以我们看到的天空就是蓝色的啦!',
      time: '今天 14:31'
    },
    {
      id: 3,
      type: 'user',
      content: '给我唱一首拔萝卜吧!',
      time: '今天 15:15'
    },
    {
      id: 4,
      type: 'ai',
      content: '',
      time: '今天 15:15',
      isAudio: true,
      audioDuration: '01:45'
    }
  ],
  2: [
    {
      id: 1,
      type: 'user',
      content: '你知道恐龙吗？',
      time: '昨天 10:30'
    },
    {
      id: 2,
      type: 'ai',
      content: '当然知道！恐龙是生活在很久很久以前的大型爬行动物，有的恐龙比房子还要大呢！',
      time: '昨天 10:31'
    },
    {
      id: 3,
      type: 'user',
      content: '那给我讲一个恐龙的故事吧',
      time: '昨天 10:32'
    },
    {
      id: 4,
      type: 'ai',
      content: '好的，我来给你讲一个关于恐龙的故事...',
      time: '昨天 10:33'
    }
  ],
  3: [
    {
      id: 1,
      type: 'user',
      content: '我想听拔萝卜',
      time: '昨天 16:00'
    },
    {
      id: 2,
      type: 'ai',
      content: '',
      time: '昨天 16:01',
      isAudio: true,
      audioDuration: '02:30'
    },
    {
      id: 3,
      type: 'ai',
      content: '《拔萝卜》已经唱完啦，还要听别的吗？',
      time: '昨天 16:04'
    }
  ],
  4: [
    {
      id: 1,
      type: 'user',
      content: '给我讲个故事吧',
      time: '周一 20:00'
    },
    {
      id: 2,
      type: 'ai',
      content: '从前有一只勇敢的小兔子...',
      time: '周一 20:01'
    }
  ],
  5: [
    {
      id: 1,
      type: 'user',
      content: '苹果用英语怎么说？',
      time: '周一 18:00'
    },
    {
      id: 2,
      type: 'ai',
      content: 'Apple, A-P-P-L-E, apple!',
      time: '周一 18:01'
    }
  ]
}

// Mock 数据 - 角色信息
const mockCharacters: Record<number, Character> = {
  1: { id: 1, name: '阳光知心伴伴', description: '温柔音色 / 开朗耐心', icon: '🎤' },
  2: { id: 2, name: '智慧小博士', description: '博学多才 / 爱讲故事', icon: '📚' },
  3: { id: 3, name: '音乐小精灵', description: '歌声甜美 / 会唱儿歌', icon: '🎵' },
  4: { id: 4, name: '故事大王', description: '故事丰富 / 生动有趣', icon: '📖' },
  5: { id: 5, name: '英语小老师', description: '英语启蒙 / 发音标准', icon: '🔤' }
}

/**
 * 获取会话列表
 */
export function getConversations(): Promise<ChatConversation[]> {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve([...mockConversations])
    }, 300)
  })
}

/**
 * 获取会话消息列表
 * @param conversationId 会话ID
 */
export function getMessages(conversationId: number): Promise<ChatMessage[]> {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve(mockMessages[conversationId] || [])
    }, 300)
  })
}

/**
 * 获取角色信息
 * @param characterId 角色ID
 */
export function getCharacter(characterId: number): Promise<Character | null> {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve(mockCharacters[characterId] || null)
    }, 300)
  })
}