<?php

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

class CreateAnalyticsTable extends Migration
{

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('analytics', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('seconds')->default(0);

            $table->integer('course_id')->unsigned()->index();
            $table->foreign('course_id')->references('id')->on('courses')->onDelete('cascade');
            $table->integer('slide_id')->unsigned()->index();
            $table->foreign('slide_id')->references('id')->on('slides')->onDelete('cascade');

            if (Module::has('Students')) {
                if (!Schema::hasTable('students')) {
                    Artisan::call('module:migrate', ['module' => 'Students']);
                }
                $table->integer('student_id')->unsigned()->index();
                $table->foreign('student_id')->references('id')->on('students')->onDelete('cascade');
            }

            $table->timestamps();
            $table->softDeletes();
        });
    }

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

}