using Dpz.Core.Entity.Base;
using Dpz.Core.Entity.Base.Indexes;

namespace Dpz.Core.Public.Entity;

/// <summary>
/// 代码文件系统实体
/// </summary>
public class CodeFileSystemEntry : BaseEntity, IIndexedEntity<CodeFileSystemEntry>
{
    /// <summary>
    /// 完整路径分段
    /// </summary>
    public required List<string> PathSegments { get; set; } = [];

    /// <summary>
    /// 名称
    /// </summary>
    public required string Name { get; set; }

    /// <summary>
    /// 父级路径分段（根目录为空集合）
    /// </summary>
    public List<string> ParentPathSegments { get; set; } = [];

    /// <summary>
    /// 是否为目录
    /// </summary>
    public bool IsDirectory { get; set; }

    /// <summary>
    /// 扩展名（目录为空）
    /// </summary>
    public string? Extension { get; set; }

    /// <summary>
    /// 大小（目录为空）
    /// </summary>
    public long? Size { get; set; }

    /// <summary>
    /// 文件哈希（目录为空）
    /// </summary>
    public string? Hash { get; set; }

    /// <summary>
    /// 文件内容类型（目录为 Unknown）
    /// </summary>
    public CodeFileContentType CodeFileContentType { get; set; }

    /// <summary>
    /// 文件内容（目录为空）
    /// </summary>
    public string? FileContent { get; set; }

    /// <summary>
    /// 代码语言
    /// </summary>
    public string? CodeLanguage { get; set; }

    /// <summary>
    /// 标签
    /// </summary>
    public List<string> Tags { get; set; } = [];

    /// <summary>
    /// 创建时间
    /// </summary>
    [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
    public DateTime CreatedTime { get; set; }

    /// <summary>
    /// 最后修改时间
    /// </summary>
    [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
    public DateTime LastWriteTime { get; set; }

    /// <summary>
    /// 最后更新时间（数据更新时间）
    /// </summary>
    [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
    public DateTime LastUpdateTime { get; set; }

    /// <summary>
    /// 描述
    /// </summary>
    public string? Description { get; set; }

    /// <summary>
    /// AI分析结果
    /// </summary>
    public string? AiAnalyzeResult { get; set; }

    /// <summary>
    /// AI分析时间
    /// </summary>
    [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
    public DateTime? AiAnalyzeTime { get; set; }

    /// <summary>
    /// AI分析对应的文件哈希
    /// </summary>
    public string? AiAnalyzeHash { get; set; }

    /// <inheritdoc />
    public static IReadOnlyList<EntityIndexDefinition> GetIndexDefinitions() =>
        [
            // PathSegments 索引（路径查询）
            new()
            {
                Name = "idx_path_segments",
                Fields = [EntityIndexField.Ascending<CodeFileSystemEntry>(x => x.PathSegments)],
            },
            // ParentPathSegments 索引（查询子项）
            new()
            {
                Name = "idx_parent_path_segments",
                Fields =
                [
                    EntityIndexField.Ascending<CodeFileSystemEntry>(x => x.ParentPathSegments),
                ],
            },
            // Name 索引（名称搜索）
            new()
            {
                Name = "idx_name",
                Fields = [EntityIndexField.Ascending<CodeFileSystemEntry>(x => x.Name)],
            },
            // IsDirectory + ParentPathSegments 复合索引（查询目录下的文件）
            new()
            {
                Name = "idx_is_directory_parent_path",
                Fields =
                [
                    EntityIndexField.Ascending<CodeFileSystemEntry>(x => x.IsDirectory),
                    EntityIndexField.Ascending<CodeFileSystemEntry>(x => x.ParentPathSegments),
                ],
            },
        ];
}