feat: topic api

src/server/api/routers/topic.ts

@@ -1,9 +1,30 @@
 import { eq } from "drizzle-orm";
-import {
-  createTRPCRouter,
-  protectedProcedure,
-  publicProcedure,
-} from "~/server/api/trpc";
-import { topics } from "~/server/db/schema";
+import { z } from "zod";
+import { createTRPCRouter, protectedProcedure } from "~/server/api/trpc";
+import { lessonToTopic, topics } from "~/server/db/schema";
 
-export const topicRouter = createTRPCRouter({});
+export const topicRouter = createTRPCRouter({
+  getAllLessonTopics: protectedProcedure
+    .input(z.object({ lessonId: z.number() }))
+    .query(async ({ ctx, input }) => {
+      return await ctx.db.query.lessonToTopic.findMany({
+        where: eq(lessonToTopic.lessonId, input.lessonId),
+        with: { topic: true },
+      });
+    }),
+  getTopic: protectedProcedure
+    .input(
+      z.object({
+        topicId: z.number(),
+        includeExercises: z.boolean().optional().default(false),
+      }),
+    )
+    .query(async ({ ctx, input }) => {
+      const exercises = input.includeExercises ? true : undefined;
+      return await ctx.db.query.topics.findFirst({
+        where: eq(topics.topicId, input.topicId),
+        with: { exercises },
+        // with: { exercises: { with: { exercise: { with: { topics: true } } } } },
+      });
+    }),
+});