1 files changed, 37 insertions, 0 deletions
diff --git a/Server/Tag.cs b/Server/Tag.cs
new file mode 100644
index 0000000..c857c66
--- /dev/null
+++ b/Server/Tag.cs
@@ -0,0 +1,37 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace HyperBooru;
+
+public enum TagSource {
+    Internal,
+    UserTag
+}
+
+public class TagDefinition : HBObject {
+    public         TagSource           Source       { get; set; } = TagSource.Internal;
+    public         string?             Namespace    { get; set; }
+    public         string              Name         { get; set; }
+    public         string?             Alias        { get; set; }
+    public virtual List<TagDefinition> ImplicitTags { get; set; } = new();
+
+    public static explicit operator ApiModels.TagDefinition(TagDefinition tagDefinition) => new() {
+        TagDefinitionId = tagDefinition.Guid,
+        Namespace       = tagDefinition.Namespace,
+        Name            = tagDefinition.Name,
+        Alias           = tagDefinition.Alias,
+        ImplicitTags    = tagDefinition.ImplicitTags.Select(td => td.Guid).ToArray()
+    };
+}
+
+public class Tag : HBObject {
+    [ForeignKey("ObjectId")]
+    public         int           TagDefinitionId { get; set; }
+    public virtual TagDefinition TagDefinition   { get; set; }
+    public         DateTime      CreateTime      { get; set; } = DateTime.UtcNow;
+    public virtual HBObject      Target          { get; set; }
+
+    public Tag() {}
+
+    public Tag(TagDefinition tagDef) =>
+        this.TagDefinition = tagDef;
+}