<?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('slave_sites', function (Blueprint $table) {
            // 1. 先把那个重名的唯一索引给我卸了！
            $table->dropUnique(['sCode']);
        });

        Schema::table('slave_sites', function (Blueprint $table) {
            // 2. 重新冲锋：修改长度并重新建立唯一约束
            $table->string('sCode', 100)->unique()->change();
        });
    }

    public function down(): void
    {
        Schema::table('slave_sites', function (Blueprint $table) {
            // 撤退逻辑：按需写
            $table->string('sCode', 255)->change();
        });
    }
};