<?php

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

class CreateBlocsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        if (Schema::hasTable('blocs')) {
            return;
        }

        Schema::create('blocs', function (Blueprint $table) {
            $table->increments('id')->comment('集团ID');
            $table->string('sn', 32)->comment('集团编号');
            $table->string('name', 32)->comment('集团名称');
            $table->string('shorthand', 32)->comment('英文简称');
            $table->tinyInteger('carrier_operator')->unsigned()->default(255)->comment('运营商(0:联通 1:移动 2:电信)');
            $table->timestamps();
            $table->softDeletes();

            $table->unique(['sn', 'deleted_at']);
            $table->index('name');
            $table->index('carrier_operator');

            $table->comment('卡源集团');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('blocs');
    }
}