feat: create new label

src/server/api/routers/label.ts

@@ -0,0 +1,54 @@
+import { z } from "zod";
+import { and, eq, isNull } from "drizzle-orm";
+
+import { cards, cardsToLabels, labels } from "~/server/db/schema";
+import { generateUID } from "~/utils/generateUID";
+
+import {
+  createTRPCRouter,
+  publicProcedure,
+} from "~/server/api/trpc";
+
+export const labelRouter = createTRPCRouter({
+  create: publicProcedure
+    .input(
+      z.object({
+        name: z.string().min(1).max(36),
+        cardPublicId: z.string().min(12),
+        colourCode: z.string().length(7),
+      }),
+    )
+    .mutation(({ ctx, input }) => {
+      const userId = ctx.session?.user.id;
+
+      if (!userId) return;
+
+      return ctx.db.transaction(async (tx) => {
+        const card = await tx.query.cards.findFirst({
+          where: and(eq(cards.publicId, input.cardPublicId), isNull(cards.deletedAt)),
+          with: {
+            list: {
+              with: {
+                board: true
+              }
+            }
+          }
+        });
+
+        if (!card) return;
+
+        const newLabel = await tx.insert(labels).values({
+          publicId: generateUID(),
+          name: input.name,
+          colourCode: input.colourCode,
+          createdBy: userId,
+          boardId: card.list.boardId,
+        });
+
+        return tx.insert(cardsToLabels).values({
+          cardId: card.id,
+          labelId: Number(newLabel.insertId),
+        });
+      })
+    }),
+});