import { eq, desc } from "drizzle-orm";
import { db, teacherContent } from "@/lib/db";

export async function listTeacherContent(userId: string) {
  return db
    .select()
    .from(teacherContent)
    .where(eq(teacherContent.userId, userId))
    .orderBy(desc(teacherContent.createdAt));
}

export async function findTeacherContentById(id: string) {
  const [row] = await db.select().from(teacherContent).where(eq(teacherContent.id, id));
  return row ?? null;
}

export async function insertTeacherContent(data: {
  userId: string;
  topic: string;
  content: Record<string, unknown>;
  explorationId?: string;
  status?: string;
}) {
  const [row] = await db
    .insert(teacherContent)
    .values({
      userId: data.userId,
      explorationId: data.explorationId,
      topic: data.topic,
      content: data.content,
      status: data.status ?? "active",
    })
    .returning();
  return row;
}

export async function updateTeacherContent(
  id: string,
  data: Partial<{
    status: string;
    completedNote: string;
    completedAt: Date;
  }>
) {
  const [row] = await db
    .update(teacherContent)
    .set(data)
    .where(eq(teacherContent.id, id))
    .returning();
  return row;
}