import { NextRequest, NextResponse } from 'next/server';
import { db } from '@/lib/db';

export async function GET(
    req: NextRequest,
    context: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await context.params;
        const result = await db.query('SELECT * FROM merchants WHERE id = $1 LIMIT 1', [id]);
        const data = result.rows[0];

        if (!data) {
            return NextResponse.json({ error: 'Merchant not found' }, { status: 404 });
        }

        return NextResponse.json(data);
    } catch (err: any) {
        return NextResponse.json(
            { error: `Internal Server Error: ${err.message}` },
            { status: 500 }
        );
    }
}

export async function PATCH(
    req: NextRequest,
    context: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await context.params;
        const { name, webhook_url, payment_provider, provider_config, fee_percent } = await req.json();

        if (!name) {
            return NextResponse.json(
                { error: 'Firma adı zorunludur.' },
                { status: 400 }
            );
        }

        const result = await db.query(
            'UPDATE merchants SET name = $1, webhook_url = $2, payment_provider = $3, provider_config = $4, fee_percent = $5 WHERE id = $6 RETURNING *',
            [name, webhook_url, payment_provider, provider_config, fee_percent || 1.0, id]
        );
        const data = result.rows[0];

        if (!data) {
            return NextResponse.json({ error: 'Update failed or merchant not found' }, { status: 500 });
        }

        return NextResponse.json(data);
    } catch (err: any) {
        return NextResponse.json(
            { error: `Internal Server Error: ${err.message}` },
            { status: 500 }
        );
    }
}

export async function DELETE(
    req: NextRequest,
    context: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await context.params;
        await db.query('DELETE FROM merchants WHERE id = $1', [id]);

        return NextResponse.json({ success: true });
    } catch (err: any) {
        return NextResponse.json(
            { error: `Internal Server Error: ${err.message}` },
            { status: 500 }
        );
    }
}