// app/api/branches/[branch]/[year]/months/route.js
import { NextResponse } from "next/server";
import { listMonths } from "@/lib/storage";

/**
 * GET /api/branches/[branch]/[year]/months
 *
 * Returns the list of month folders for a given branch and year.
 * Example: /api/branches/NL01/2024/months → { months: ["01", "02", ...] }
 */
export async function GET(request, ctx) {
	const { branch, year } = await ctx.params;
	console.log("[/api/branches/[branch]/[year]/months] params:", {
		branch,
		year,
	});

	if (!branch || !year) {
		return NextResponse.json(
			{ error: "branch oder year fehlt" },
			{ status: 400 }
		);
	}

	try {
		const months = await listMonths(branch, year);

		return NextResponse.json({ branch, year, months });
	} catch (error) {
		console.error("[/api/branches/[branch]/[year]/months] Error:", error);

		return NextResponse.json(
			{ error: "Fehler beim Lesen der Monate: " + error.message },
			{ status: 500 }
		);
	}
}