import { NextResponse } from 'next/server';
import { PrismaClient } from '@prisma/client';

const prisma = new PrismaClient();

export async function GET() {
    try {
        const genres = await prisma.genre.findMany({
            orderBy: { name: 'asc' },
            include: {
                _count: {
                    select: { songs: true }
                }
            }
        });
        return NextResponse.json(genres);
    } catch (error) {
        console.error('Error fetching genres:', error);
        return NextResponse.json({ error: 'Internal Server Error' }, { status: 500 });
    }
}

export async function POST(request: Request) {
    try {
        const { name } = await request.json();

        if (!name || typeof name !== 'string') {
            return NextResponse.json({ error: 'Invalid name' }, { status: 400 });
        }

        const genre = await prisma.genre.create({
            data: { name: name.trim() },
        });

        return NextResponse.json(genre);
    } catch (error) {
        console.error('Error creating genre:', error);
        return NextResponse.json({ error: 'Internal Server Error' }, { status: 500 });
    }
}

export async function DELETE(request: Request) {
    try {
        const { id } = await request.json();

        if (!id) {
            return NextResponse.json({ error: 'Missing id' }, { status: 400 });
        }

        await prisma.genre.delete({
            where: { id: Number(id) },
        });

        return NextResponse.json({ success: true });
    } catch (error) {
        console.error('Error deleting genre:', error);
        return NextResponse.json({ error: 'Internal Server Error' }, { status: 500 });
    }
}