import { NextRequest, NextResponse } from "next/server";
import { auth } from "@/lib/auth";
import {
	getUserNotifications,
	markNotificationsAsRead,
	getUnreadNotificationCount,
} from "@/lib/notifications";

export async function GET(request) {
	try {
		const session = await auth();

		if (!session?.user?.id) {
			return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
		}

		const { searchParams } = new URL(request.url);
		const includeRead = searchParams.get("includeRead") === "true";
		const limit = parseInt(searchParams.get("limit") || "50");
		const offset = parseInt(searchParams.get("offset") || "0");

		const notifications = await getUserNotifications(session.user.id, {
			includeRead,
			limit,
			offset,
		});

		const unreadCount = await getUnreadNotificationCount(session.user.id);

		return NextResponse.json({
			notifications,
			unreadCount,
			hasMore: notifications.length === limit,
		});
	} catch (error) {
		console.error("Error fetching notifications:", error);
		return NextResponse.json(
			{ error: "Internal server error" },
			{ status: 500 }
		);
	}
}

export async function PATCH(request) {
	try {
		const session = await auth();

		if (!session?.user?.id) {
			return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
		}

		const body = await request.json();
		const { action, notificationIds } = body;

		if (action === "markAsRead") {
			await markNotificationsAsRead(session.user.id, notificationIds);
			const unreadCount = await getUnreadNotificationCount(session.user.id);

			return NextResponse.json({
				success: true,
				unreadCount,
			});
		}

		return NextResponse.json({ error: "Invalid action" }, { status: 400 });
	} catch (error) {
		console.error("Error updating notifications:", error);
		return NextResponse.json(
			{ error: "Internal server error" },
			{ status: 500 }
		);
	}
}