✨ File uploading

DysonNetwork.Sphere/Storage/CloudFile.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
+using NodaTime;
+
+namespace DysonNetwork.Sphere.Storage;
+
+public class RemoteStorageConfig
+{
+    public string Id { get; set; } = string.Empty;
+    public string Label { get; set; } = string.Empty;
+    public string Region { get; set; } = string.Empty;
+    public string Bucket { get; set; } = string.Empty;
+    public string Endpoint { get; set; } = string.Empty;
+    public string SecretId { get; set; } = string.Empty;
+    public string SecretKey { get; set; } = string.Empty;
+    public bool EnableSigned { get; set; }
+    public bool EnableSsl { get; set; }
+    public string? ImageProxy { get; set; }
+    public string? AccessProxy { get; set; }
+}
+
+public class CloudFile : BaseModel
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+    [MaxLength(1024)] public string Name { get; set; } = string.Empty;
+    [MaxLength(4096)] public string? Description { get; set; }
+    [Column(TypeName = "jsonb")] public Dictionary<string, object>? FileMeta { get; set; } = null!;
+    [Column(TypeName = "jsonb")] public Dictionary<string, object>? UserMeta { get; set; } = null!;
+    [Column(TypeName = "jsonb")] List<CloudFileSensitiveMark> SensitiveMarks { get; set; } = new();
+    [MaxLength(256)] public string? MimeType { get; set; }
+    [MaxLength(256)] public string? Hash { get; set; }
+    public long Size { get; set; }
+    public Instant? UploadedAt { get; set; }
+    [MaxLength(128)] public string? UploadedTo { get; set; }
+
+    // Metrics
+    // When this used count keep zero, it means it's not used by anybody, so it can be recycled
+    public int UsedCount { get; set; } = 0;
+
+    [JsonIgnore] public Account.Account Account { get; set; } = null!;
+}
+
+public enum CloudFileSensitiveMark
+{
+    Language,
+    SexualContent,
+    Violence,
+    Profanity,
+    HateSpeech,
+    Racism,
+    AdultContent,
+    DrugAbuse,
+    AlcoholAbuse,
+    Gambling,
+    SelfHarm,
+    ChildAbuse,
+    Other
+}