advance

app/(protected)/courses/[slug]/learn/actions.ts

@@ -0,0 +1,92 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requireUser } from "@/lib/auth/requireUser";
+import { db } from "@/lib/prisma";
+
+type ToggleLessonCompleteInput = {
+  courseSlug: string;
+  lessonId: string;
+};
+
+export async function toggleLessonComplete({ courseSlug, lessonId }: ToggleLessonCompleteInput) {
+  const user = await requireUser();
+
+  if (!user?.id) {
+    return { success: false, error: "Unauthorized" };
+  }
+
+  const lesson = await db.lesson.findUnique({
+    where: { id: lessonId },
+    select: {
+      id: true,
+      module: {
+        select: {
+          courseId: true,
+          course: {
+            select: {
+              slug: true,
+            },
+          },
+        },
+      },
+    },
+  });
+
+  if (!lesson || lesson.module.course.slug !== courseSlug) {
+    return { success: false, error: "Lesson not found" };
+  }
+
+  const enrollment = await db.enrollment.findUnique({
+    where: {
+      userId_courseId: {
+        userId: user.id,
+        courseId: lesson.module.courseId,
+      },
+    },
+    select: { id: true },
+  });
+
+  if (!enrollment) {
+    return { success: false, error: "Not enrolled in this course" };
+  }
+
+  const existingProgress = await db.userProgress.findUnique({
+    where: {
+      userId_lessonId: {
+        userId: user.id,
+        lessonId,
+      },
+    },
+    select: {
+      id: true,
+      isCompleted: true,
+    },
+  });
+
+  const nextCompleted = !existingProgress?.isCompleted;
+
+  if (existingProgress) {
+    await db.userProgress.update({
+      where: { id: existingProgress.id },
+      data: {
+        isCompleted: nextCompleted,
+        finishedAt: nextCompleted ? new Date() : null,
+        lastPlayedAt: new Date(),
+      },
+    });
+  } else {
+    await db.userProgress.create({
+      data: {
+        userId: user.id,
+        lessonId,
+        isCompleted: true,
+        finishedAt: new Date(),
+      },
+    });
+  }
+
+  revalidatePath(`/courses/${courseSlug}/learn`);
+
+  return { success: true, isCompleted: nextCompleted };
+}