using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Dpz.Core.Public.ViewModel;
using Dpz.Core.Public.ViewModel.Response;

namespace Dpz.Core.Service.RepositoryService;

public interface ICodeFileSystemEntryService
{
    /// <summary>
    /// 根据路径分段查找文件系统实体
    /// </summary>
    /// <param name="pathSegments">路径分段列表（null 或空表示根目录）</param>
    /// <param name="cancellationToken">取消令牌</param>
    /// <returns>匹配的响应模型，不存在则返回 null</returns>
    Task<CodeFileSystemEntryResponse?> FindByPathAsync(
        IReadOnlyCollection<string>? pathSegments,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 根据路径分段查找文件系统实体（绕过缓存，读取最新数据库状态）
    /// </summary>
    /// <param name="pathSegments">路径分段列表（null 或空表示根目录）</param>
    /// <param name="cancellationToken">取消令牌</param>
    /// <returns>匹配的响应模型，不存在则返回 null</returns>
    Task<CodeFileSystemEntryResponse?> FindByPathWithoutCacheAsync(
        IReadOnlyCollection<string>? pathSegments,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 获取指定父路径下的所有子项
    /// </summary>
    /// <param name="parentPathSegments">父路径分段列表（null 或空表示根目录）</param>
    /// <param name="cancellationToken">取消令牌</param>
    /// <returns>子项响应列表</returns>
    Task<List<CodeFileSystemEntryResponse>> GetChildrenAsync(
        IReadOnlyCollection<string>? parentPathSegments,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 根据关键字搜索文件/目录名称（忽略大小写）
    /// </summary>
    /// <param name="keyword">搜索关键字</param>
    /// <param name="cancellationToken">取消令牌</param>
    /// <returns>匹配的响应列表</returns>
    Task<List<CodeFileSystemEntryResponse>> SearchAsync(
        string keyword,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 保存描述
    /// </summary>
    /// <param name="path">路径分段</param>
    /// <param name="name">文件或目录名称</param>
    /// <param name="description">描述</param>
    /// <param name="cancellationToken">取消令牌</param>
    /// <returns>是否保存成功</returns>
    Task<bool> SaveDescriptionAsync(
        string[]? path,
        string name,
        string? description,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 保存AI分析结果
    /// </summary>
    /// <param name="path">路径分段</param>
    /// <param name="name">文件名称</param>
    /// <param name="analyzeResult">分析结果</param>
    /// <param name="analyzedHash">源文件 hash</param>
    /// <param name="cancellationToken">取消令牌</param>
    Task SaveAiAnalyzeResultAsync(
        string[]? path,
        string name,
        string analyzeResult,
        string? analyzedHash = null,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 判断是否需要触发AI分析
    /// </summary>
    /// <param name="path"></param>
    /// <param name="name"></param>
    /// <param name="codeContainer"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<bool> ShouldAnalyzeAsync(
        string[]? path,
        string? name,
        CodeContainer? codeContainer,
        CancellationToken cancellationToken = default
    );

    /// <summary>
    /// 全量同步文件系统到数据库：扫描本地文件与 DB 记录比对，执行增删改操作
    /// </summary>
    /// <param name="cancellationToken">取消令牌</param>
    Task SyncAsync(CancellationToken cancellationToken = default);
}