<?php

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

return new class extends Migration
{
	/**
	 * Run the migrations.
	 *
	 * @return void
	 */
	public function up()
	{
		Schema::table('techniques', function (Blueprint $table) {
			$table->string('name')->nullable()->default(null)->change();
		});
		Schema::create('technique_chapter', function (Blueprint $table) {
			$table->id();
			$table->foreignId('parent_id')->references('id')->on('techniques')->constrained();
			$table->foreignId('child_id')->references('id')->on('techniques')->constrained();
			$table->integer('level')->default(2);
			$table->integer('order')->default(0);
			$table->timestamps();
		});
	}

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