<?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
    {
        Schema::table('stock_transfers', function (Blueprint $table) {
            $table->foreignId('stock_batch_id')->nullable()->after('product_variant_id')->constrained('stock_batches')->nullOnDelete();
            // Discrete serial rows being moved between branches — a transfer moves
            // specific units, not a quantity, so this is a list of product_serials.id.
            $table->json('serial_ids')->nullable()->after('stock_batch_id');
        });
    }

    public function down(): void
    {
        Schema::table('stock_transfers', function (Blueprint $table) {
            $table->dropColumn('serial_ids');
            $table->dropConstrainedForeignId('stock_batch_id');
        });
    }
};
