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DysonNetwork.Shared/Models/CloudFileIndex.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
+
+namespace DysonNetwork.Shared.Models;
+
+[Index(nameof(Path), nameof(AccountId))]
+public class SnCloudFileIndex : ModelBase
+{
+    public Guid Id { get; init; } = Guid.NewGuid();
+
+    /// <summary>
+    /// The path of the file,
+    /// only store the parent folder.
+    /// With the trailing slash.
+    ///
+    /// Like /hello/here/ not /hello/here/text.txt or /hello/here
+    /// Or the user home folder files, store as /
+    ///
+    /// Besides, the folder name should be all query-safe, not contains % or
+    /// other special characters that will mess up the pgsql query
+    /// </summary>
+    [MaxLength(8192)]
+    public string Path { get; init; } = null!;
+
+    [MaxLength(32)] public string FileId { get; init; } = null!;
+    public SnCloudFile File { get; init; } = null!;
+    public Guid AccountId { get; init; }
+    [NotMapped] public SnAccount? Account { get; init; }
+}