Enhance tags

prisma/migrations/20251220224429_artwork_4/migration.sql

@@ -0,0 +1,5 @@
+-- AlterTable
+ALTER TABLE "ArtTag" ADD COLUMN     "parentId" TEXT;
+
+-- AddForeignKey
+ALTER TABLE "ArtTag" ADD CONSTRAINT "ArtTag_parentId_fkey" FOREIGN KEY ("parentId") REFERENCES "ArtTag"("id") ON DELETE SET NULL ON UPDATE CASCADE;

prisma/migrations/20251220231156_artwork_5/migration.sql

@@ -0,0 +1,22 @@
+-- CreateTable
+CREATE TABLE "ArtTagAlias" (
+    "id" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "alias" TEXT NOT NULL,
+    "tagId" TEXT NOT NULL,
+
+    CONSTRAINT "ArtTagAlias_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "ArtTagAlias_alias_key" ON "ArtTagAlias"("alias");
+
+-- CreateIndex
+CREATE INDEX "ArtTagAlias_alias_idx" ON "ArtTagAlias"("alias");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "ArtTagAlias_tagId_alias_key" ON "ArtTagAlias"("tagId", "alias");
+
+-- AddForeignKey
+ALTER TABLE "ArtTagAlias" ADD CONSTRAINT "ArtTagAlias_tagId_fkey" FOREIGN KEY ("tagId") REFERENCES "ArtTag"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -106,8 +106,27 @@ model ArtTag {
 
   description String?
 
+  aliases    ArtTagAlias[]
   artworks   Artwork[]
   categories ArtCategory[]
+
+  parentId String?
+  parent   ArtTag?  @relation("TagHierarchy", fields: [parentId], references: [id], onDelete: SetNull)
+  children ArtTag[] @relation("TagHierarchy")
+}
+
+model ArtTagAlias {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  alias String @unique
+
+  tagId String
+  tag   ArtTag @relation(fields: [tagId], references: [id], onDelete: Cascade)
+
+  @@unique([tagId, alias])
+  @@index([alias])
 }
 
 model Color {