namespace Dpz.Core.Service.RepositoryService;

/// <summary>
/// AI聊天服务接口
/// </summary>
public interface IAiChatService
{
    /// <summary>
    /// 创建新会话
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId"></param>
    /// <param name="sessionName">会话名称</param>
    /// <param name="modelType">当前会话的模型</param>
    /// <returns>会话信息</returns>
    Task<VmAiChatSession> CreateSessionAsync(
        string userId,
        string sessionId,
        string sessionName,
        string modelType
    );

    /// <summary>
    /// 获取用户的会话列表
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <returns>会话列表</returns>
    Task<List<VmAiChatSession>> GetSessionListAsync(string userId);

    /// <summary>
    /// 删除会话（软删除）
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <returns></returns>
    Task<bool> DeleteSessionAsync(string userId, string sessionId);

    /// <summary>
    /// 获取会话详情
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <returns>会话信息</returns>
    Task<VmAiChatSession?> GetSessionAsync(string userId, string sessionId);

    /// <summary>
    /// 保存AI聊天记录（用户消息）
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <param name="message">消息内容</param>
    /// <param name="sender">发送人信息</param>
    /// <returns></returns>
    Task SaveUserMessageAsync(string userId, string sessionId, string message, VmUserInfo sender);

    /// <summary>
    /// 保存AI聊天记录（AI回复）
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <param name="message">消息内容</param>
    /// <param name="aiUser">AI用户信息</param>
    /// <returns></returns>
    Task SaveAiMessageAsync(string userId, string sessionId, string message, VmUserInfo aiUser);

    /// <summary>
    /// 获取会话的聊天记录
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <param name="pageIndex">页码</param>
    /// <param name="pageSize">每页条数</param>
    /// <returns>聊天记录</returns>
    Task<IPagedList<VmAiChatRecord>> GetSessionMessagesAsync(
        string sessionId,
        int pageIndex,
        int pageSize
    );

    /// <summary>
    /// 更新会话名称
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <param name="newName">新名称</param>
    /// <returns></returns>
    Task<bool> UpdateSessionNameAsync(string userId, string sessionId, string newName);

    /// <summary>
    /// 更新会话的AI模型类型
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <param name="sessionId">会话ID</param>
    /// <param name="modelType">模型类型（AiModel枚举的整数值转换为字符串）</param>
    /// <returns></returns>
    Task<bool> UpdateSessionModelTypeAsync(string userId, string sessionId, string modelType);

    /// <summary>
    /// 删除聊天记录(软删除)
    /// </summary>
    /// <param name="messageId">消息ID</param>
    /// <param name="account">账号</param>
    /// <returns></returns>
    Task<ResponseResult> DeleteMessageAsync(string messageId, string account);
}