<?php

namespace App\Models\Traits;

trait Documents
{
	protected $postType;

	public function getModelName()
	{
		$class						= (new \ReflectionClass($this))->getShortName();
		$class						= strtolower($class)."s";

		return $class;
	}

	public function documents()
	{
		return $this->hasMany('App\Models\Document', 'model_id')
			->where('model', $this->postType);
	}

	public function previewDocument()
	{
		return $this->hasOne('App\Models\Document', 'model_id')
			->where('is_preview', '=', 1)
			->where('model', '=', $this->type);
	}

	/**********/
	/* Scopes */
	/**********/
	public function scopeWithImages($query, $type = null)
	{
		$this->postType				= $type;

		$query						= $query->select(['posts.*', 'documents.filename'])
			->join('documents', function($join)
			{
				$join->on('model_id', '=', $this->getModelName().'.id');
				$join->where('model', '=', $this->postType);
				$join->where('is_preview', '=', true);
				$join->where('mime_type', '=', 'image/jpeg');
			});

		return $query;
	}

	public function scopeWithoutImages($query, $type = null)
	{
		$this->postType				= $type;

		$query						= $query->leftjoin('documents', function($join){
			$join->on('model_id', '=', $this->getModelName().'.id');
			$join->where('model', '=', $this->postType);
		})
			->whereNull('model_id');

		return $query;
	}

	public function scopeGetDocuments($query, $type = null)
	{
		$this->postType				= $type;
		$query						= $query->select([$this->getModelName().'.*', 'documents.filename'])
			->with('documents')
			->leftjoin('documents', function($join)
			{
				$join->on('model_id', '=', $this->getModelName().'.id');
				$join->where('is_preview', '=', true);
				$join->where('mime_type', '=', 'image/jpeg');
				if($this->postType)
				{
					$join->where('model', '=', $this->postType);
				}
			});

		return $query;
	}
}