vbbs/app/Models/Mode.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;

use App\Classes\Frame as FrameClass;
use App\Classes\Frame\Ansi as AnsiFrame;
use App\Classes\Frame\Videotex as VideotexFrame;

use App\Classes\Server;
use App\Classes\Server\Ansi as AnsiServer;
use App\Classes\Server\Videotex as VideotexServer;

class Mode extends Model
{
	public function frames()
	{
		return $this->hasMany(Frame::class);
	}

	/**
	 * Return a frame class for the Model
	 *
	 * @param Model $o
	 * @return FrameClass
	 * @throws \Exception
	 */
	public function frame(Model $o): FrameClass
	{
		switch (strtolower($this->name)) {
			case 'ansi':
				return new AnsiFrame($o);
			case 'videotex':
				return new VideotexFrame($o);
			default:
				throw new \Exception('Unknown Frame type: '.$mo->name);
		}
	}

	/**
	 * Fetch a specific frame from the DB
	 *
	 * @param int $frame
	 * @param string $index
	 * @param Server $so
	 * @return FrameClass
	 * @throws \Exception
	 */
	public function frameLoad(int $frame,string $index,Server $so): FrameClass
	{
		return $this->frame(
			// Return our internal test frame.
		($frame == '999' and $index == 'a')
				? $so->testFrame()
				: $this->frames()
					->where('frame','=',$frame)
					->where('index','=',$index)
					->firstOrFail()
		);
	}

	/**
	 * Return our server instance
	 */
	public function server()
	{
		switch (strtolower($this->name)) {
			case 'ansi': return new AnsiServer($this);
			case 'videotex': return new VideotexServer($this);

			default:
				throw new \Exception('Unknown server type: '.$this->name);
		}
	}
}