<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        // 1. Preguntamos si la tabla NO existe antes de crearla
        if (!Schema::hasTable('suppliers')) {
            Schema::create('suppliers', function (Blueprint $table) {
                $table->id();
                $table->string('business_name');
                $table->string('rfc')->nullable();
                $table->string('email')->nullable();
                $table->string('phone')->nullable();
                $table->string('address')->nullable();
                $table->string('postal_code')->nullable();
                $table->text('notes')->nullable();
                $table->timestamps();
            });
        }

        if (!Schema::hasColumn('inventory_movements', 'supplier_id')) {
            Schema::table('inventory_movements', function (Blueprint $table) {
                $table->foreignId('supplier_id')
                      ->nullable()
                      ->after('warehouse_to_id')
                      ->constrained('suppliers')
                      ->onDelete('restrict');
                $table->index(['supplier_id', 'movement_type']);
            });
        }
    }

    public function down(): void
    {
        Schema::table('inventory_movements', function (Blueprint $table) {
            if (Schema::hasColumn('inventory_movements', 'supplier_id')) {
                $table->dropForeign(['supplier_id']);
                $table->dropIndex(['supplier_id', 'movement_type']);
                $table->dropColumn('supplier_id');
            }
        });

        Schema::dropIfExists('suppliers');
    }
};