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

export async function GET(request: NextRequest) {
  try {
    const sql = getDb();
    const { searchParams } = new URL(request.url);
    const search = searchParams.get("search") || "";

    let rows;
    if (search) {
      rows = await sql(
        `SELECT * FROM suppliers
         WHERE name ILIKE $1 OR code ILIKE $1 OR email ILIKE $1 OR contact_person ILIKE $1
         ORDER BY name ASC`,
        [`%${search}%`]
      );
    } else {
      rows = await sql(`SELECT * FROM suppliers ORDER BY name ASC`);
    }

    return NextResponse.json(rows);
  } catch (error) {
    console.error("[v0] Suppliers GET error:", error);
    return NextResponse.json(
      { error: error instanceof Error ? error.message : "Failed to fetch suppliers" },
      { status: 500 }
    );
  }
}

export async function POST(request: NextRequest) {
  try {
    const sql = getDb();
    const body = await request.json();
    const { name, code, email, phone, address, contact_person, country, currency, notes } = body;

    if (!name || !code) {
      return NextResponse.json({ error: "Name and code are required" }, { status: 400 });
    }

    const rows = await sql(
      `INSERT INTO suppliers (name, code, email, phone, address, contact_person, country, currency, notes)
       VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
       RETURNING *`,
      [name, code, email || null, phone || null, address || null, contact_person || null, country || "", currency || "EUR", notes || null]
    );

    return NextResponse.json(rows[0], { status: 201 });
  } catch (error) {
    console.error("[v0] Suppliers POST error:", error);
    return NextResponse.json(
      { error: error instanceof Error ? error.message : "Failed to create supplier" },
      { status: 500 }
    );
  }
}