<?php

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

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
		Schema::create('versions', function (Blueprint $table) {
			$table->id();
			$table->timestamp('created_at',0)->nullable();
			$table->string('version');

			$table->index(['version']);
		});

		foreach (DB::table('site_versions')->select(['version',DB::raw('MIN(created_at) AS created_at')])->groupBy('version')->cursor() as $o) {
			$oo = new \App\Models\Version;
			$oo->created_at = $o->created_at;
			$oo->version = $o->version;
			$oo->save();
		}

		Schema::table('site_versions', function (Blueprint $table) {
			$table->bigInteger('version_id')->nullable();
			$table->foreign('version_id')->references('id')->on('versions');
			$table->dropColumn(['updated_at']);
		});

		foreach (DB::table('versions')->select(['id','version'])->cursor() as $o) {
			DB::table('site_versions')->where('version',$o->version)->update(['version_id'=>$o->id]);
		}

		Schema::table('site_versions', function (Blueprint $table) {
			$table->dropColumn(['version']);
		});

		Schema::table('sites', function (Blueprint $table) {
			$table->dropColumn(['updated_at']);
		});
	}

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
		throw new \Exception('Cant go back');
    }
};