<?php

namespace App\Libraries;

use \Carbon\Carbon;
use Illuminate\Http\Request;

class ParameterHelper
{

	/**
	 * Validate if there's a start and limit parameter for pagination
	 * @param  array  $request 
	 * @return array
	 */
	public static function validatePagination($request = [])
	{
		$parameter = [];
		foreach ($request as $key => $value) {
			if ($key == 'page_size') {
				$parameter['page_size'] = $value;
			}
			if ($key == 'page') {
				$parameter['page'] = $value;
			}
		}
		return $parameter;
	}

	/**
	 * Validate and prepare sorting order of model based on query string parameter
	 * @param  Request $request 
	 * @return array
	 */
	public static function prepareSortingParameter(Request $request)
	{
		$response = [];
                
		if ($request->has('_sort_by') && $request->has('_sort_order')) {
			if ($request->get('_sort_by') != '') {
				$response['field'] = $request->get('_sort_by');
			}
			if ($request->get('_sort_order') != '') {
				$response['sort_order'] = $request->get('_sort_order');
			}
		}
                
		return $response;
	}

	/**
	 * Prepare simple search parameters that will be used for eloquent
	 * @param  array  $fields 
	 * @param  string $value  
	 * @return array
	 */
	public static function prepareSimpleSearchParameter($fields = [], $value = '')
	{
		$response = [];
		foreach ($fields as $field) {
			$response[] = [$field, 'LIKE', '%'.$value.'%'];
		}
		return $response;
	}

	/**
	 * Prepare parameter for multiple storing of resource with timestamp
	 * @param  array  $request 
	 * @return array
	 */
	public static function prepareMultipleResource($request = [])
	{
		$parameters = [];
		foreach ($request as $param) {
			foreach ($param as $key => $value) {
				$resource[$key] = $value;
			}
			$resource['created_at'] = Carbon::now();
			$resource['updated_at'] = Carbon::now();
			$parameters[] = $resource;
		}	
		return $parameters;
	}
    
    /**
	 * Validate and prepare grouping of model based on query string parameter
	 * @param  Request $request 
	 * @return array
	 */
	public static function prepareGroupingParameter(Request $request)
	{
		$response = [];
		if ($request->has('group_by')) {
			if ($request->get('group_by') != '') {
				$response['group_by'] = $request->get('group_by');
			}
		}
		return $response;
	}

	public static function validateStartEndDate($params)
	{
		if($params['date_start'] != null && $params['date_end'] != null)
		{
			if(strtotime($params['date_start']) > strtotime($params['date_end']))
				return true;
		}

		return false;
	}	
}