<?php
namespace MaxButtons;
defined('ABSPATH') or die('No direct access permitted');

// new class for the future.
class maxUtils
{

	protected static $timings = array();
	protected static $time_operations = array();
	protected static $timer = 0;


	/** Callback for array filter to prepend namepaces. **/
	public static function array_namespace($var)
	{
		$namespace = __NAMESPACE__ . '\\'; // PHP 5.3
		return ($namespace . $var);
	}

	public static function namespaceit($var)
	{
		$namespace = __NAMESPACE__ . '\\'; // PHP 5.3
		return $namespace . $var;
	}

	// central ajax action handler
	public static function ajax_action()
	{
		$status = 'error';

		$plugin_action = isset($_POST['plugin_action']) ? sanitize_text_field($_POST['plugin_action']) : '';
		$nonce = isset($_POST['nonce']) ? $_POST['nonce'] : false;
		$message = __( sprintf("No Handler found for action %s ", $plugin_action), 'maxbuttons');


		if (! wp_verify_nonce($nonce, 'maxajax') )
		{
			$message = __('Nonce not verified (' . $nonce . ')', 'maxbuttons');
		}
		else
		{
			do_action('maxbuttons/ajax/' . $plugin_action, $_POST);
		}

		/*echo json_encode( array( 'status' => $status,
								 'message' => $message,
							    )
						); */

		wp_send_json_error( array('message' => $message) );

	}

	public static function translit($string)
	{
		require_once(MB()->get_plugin_path() . "assets/libraries/url_slug.php");

   $string = mb_url_slug($string, array("transliterate" => true));

		return $string;
	}

	public static function selectify($name, $array, $selected, $target = '', $class = '')
	{
		// optional target for js updating
		if ($target != '' )
			$target = " data-target='$target' ";
		if ($class != '')
			$class = " class='$class' ";
		$output = "<select name='$name' id='$name' $target $class>";

		foreach($array as $key => $value)
		{
			$output .= "<option value='$key' " . selected($key, $selected, false) . ">$value</option>";
		}
		$output .= "</select>";

		return $output;

	}


	static function hex2rgba($color, $opacity) {
		// Grab the hex color and remove #
		$hex = str_replace("#", "", $color);

		// Convert hex to rgb
		if(strlen($color) == 3) {
			// If in the #fff variety
			$r = hexdec(substr($hex, 0, 1).substr($hex, 0, 1));
			$g = hexdec(substr($hex, 1, 1).substr($hex, 1, 1));
			$b = hexdec(substr($hex, 2, 1).substr($hex, 2, 1));
		} else {
			// If in the #ffffff variety
			$r = hexdec(substr($hex, 0, 2));
			$g = hexdec(substr($hex, 2, 2));
			$b = hexdec(substr($hex, 4, 2));
		}

		// The array of rgb values
		$rgb_array = array($r, $g, $b);

		// Catch for opacity when the button has not been saved
		if($opacity == '') {
			$alpha = 1;
		} else {
			// Alpha value in decimal when an opacity has been set
			$alpha = $opacity / 100;
		}

		// The rgb values separated by commas
		$rgb = implode(", ", $rgb_array);

		// Spits out rgba(0, 0, 0, 0.5) format
		return 'rgba(' . $rgb . ', ' . $alpha . ')';
	}

	static function strip_px($value) {
		return rtrim( intval($value), 'px');
	}

	static function generate_font_sizes($start, $end, $step  = 1)
	{
		$sizes = array();

		for ($i = $start; $i <= $end; $i += $step)
		{
			$sizes[$i] = $i;

		}
		return $sizes;

	}


	static function get_media_query($get_option = 1)
	{

		$queries = array("phone" =>  "only screen and (max-width : 480px)",
					"phone_land" => "only screen and (min-width : 321px) and (max-width : 480px)",
				  	"phone_portrait" => " only screen and (max-width : 320px)",
				  	"ipad" => "only screen and (min-width : 768px) and (max-width : 1024px)",
				  	"medium_phone" => "only screen and (min-width: 480px) and (max-width: 768px)",
				  	"ipad_land" => "only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape)",
				  	"ipad_portrait" => "only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait)",
				  	"desktop" => "only screen and (min-width : 1224px)",
				  	"large_desktop" => "only screen and (min-width : 1824px)",
					   );

		 $query_names = array(
						  	"phone" => __("Small phones","maxbuttons"),
						  	"phone_land" => __("Small phones (landscape)","maxbuttons"),
						  	"phone_portrait" => __("Small phones (portrait)","maxbuttons"),
						  	"medium_phone" => __("Medium-size (smart)phone","maxbuttons"),
						  	"ipad" => __("Ipad (all) / Large phones","maxbuttons"),
						  	"ipad_land" => __("Ipad landscape","maxbuttons"),
						  	"ipad_portrait" => __("Ipad portrait","maxbuttons"),
						  	"desktop" => __("Desktop","maxbuttons"),
						  	"large_desktop" => __("Large desktops","maxbuttons"),
						  	"custom" => __("Custom size","maxbuttons"),
						  	);

		$query_descriptions = array(
							"phone" => __("Optimized for small smartphones ( screen sizes under 480px )","maxbuttons"),
							"phone_land" => __("Optimzed for small smartphones in landscape and higher ( screen sizes 321px - 480px)","maxbuttons"),
							"phone_portrait" => __("Optimized for small phones ( screen size max 320px )","maxbuttons"),
							"ipad" => __("Optimized for devices between 768px and 1024px","maxbuttons"),
							"medium_phone" => __("Optimized for medium sizes devices between 480px and 768px","maxbuttons"),
							"ipad_land" => __("Optimized for devices between 768px and 1024px in landscape","maxbuttons"),
							"ipad_portrait" => __("Optimized for deviced between 768px and 1024 in portrait","maxbuttons"),
							"desktop" => __("Desktop screens from 1224px","maxbuttons"),
							"large_desktop" => __("Large desktop screens, from 1824px","maxbuttons"),
							"custom" => __("Set your own breakpoints","maxbuttons"),
							);


		switch($get_option)
		{
			case 1:
				return $query_names;
			break;
			case 2:
				return $queries;
			break;
			case 3:
				return $query_descriptions;
			break;
		}

	}

	static function get_buttons_table_name($old = false)
	{
		self::addTime('Legacy Function call : get_buttons_table_name');
		return self::get_table_name($old);
	}

	static function get_table_name($old = false) {
		global $wpdb;
		if ($old)
			return $wpdb->prefix . 'maxbuttons_buttons';
		else
			return $wpdb->prefix . 'maxbuttonsv3';
	}

	static function get_collection_table_name() {
		global $wpdb;
		return $wpdb->prefix . 'maxbuttons_collections';

	}

	static function get_coltrans_table_name() {
		global $wpdb;
		return $wpdb->prefix . 'maxbuttons_collections_trans';

	}

	/* Replacement function for Wordpress' transients and problematic name length.  */
	static function get_transient($name)
	{
		global $wpdb;
//		self::removeExpiredTrans();

		if ($name == '')
			return false;

		$table = self::get_coltrans_table_name();

		$sql = "SELECT value FROM $table where name= '%s' ";
		$sql = $wpdb->prepare($sql, $name);

		$var = $wpdb->get_var($sql);

		if (is_null($var))
			$var = false;

		return $var;

	}


	static function set_transient($name, $value , $expire = -1 )
	{
		global $wpdb;


		if ($expire == -1 )
			$expire = HOUR_IN_SECONDS * 4;

		if ($name == '')
			return false;

		$expire_time = time() + $expire;

		$table = self::get_coltrans_table_name();

		// prevent doubles, remove any present by this name
		self::delete_transient($name);

		$wpdb->insert($table,
			array("name" => $name,
				  "value" => $value,
				  "expire" => $expire_time
		 	),
		 	array("%s","%s","%d"));


	}

	static function delete_transient($name)
	{
		global $wpdb;


		$table = self::get_coltrans_table_name();
		$wpdb->delete($table, array("name" => $name), array('%s') );

	}

	static function removeExpiredTrans()
	{
		global $wpdb;

		$table = self::get_coltrans_table_name();
		$sql = "DELETE FROM $table WHERE expire <  UNIX_TIMESTAMP(NOW())";
		$return = $wpdb->query($sql);

		if($return === false)
		{
			$error = "Database error " . $wpdb->last_error;
			MB()->add_notice('error', $error);
			$install = MB()->getClass('install');
			$install->create_database_table();
		}

	}

	/** Function will try to unload any FA scripts other than MB from WP. In case of conflict */
	/* 7.0 note - this function is currently not in use due to dynamic font library loading */
	static function fixFAConflict()
	{
		$forcefa = get_option('maxbuttons_forcefa');

		if ($forcefa != '1')
			return;

		global $wp_styles;

		$our_fa_there = false;

		foreach($wp_styles->registered as $script => $details)
		{
 			if ($script == 'mbpro-font-awesome')
 			{
 				$our_fa_there = true;

 				break;
 			}
		}

		// fix nothing on pages where we are not loading.
		if (! $our_fa_there)
		{
			return;
		}

		// Loop through all registered styles and remove any that appear to be Font Awesome.
		foreach ( $wp_styles->registered as $script => $details ) {
			$src = isset($details->src) ? $details->src : false;

 			if ($script == 'mbpro-font-awesome')
 			{
 				$mbpro_src = $src;
 				continue; // exclude us
 			}

			// look at script handle

			if ( false !== strpos( $script, 'fontawesome' ) || false !== strpos( $script, 'font-awesome' ) ) {
				wp_dequeue_style( $script );
			}
			// look at file source
			if ($src && ( false !== strpos($src, 'font-awesome') || false !== strpos($src, 'fontawesome') ) )
			{
				wp_dequeue_style( $script );
			}

		}

		// This is a fix specific for NGGallery since they load their scripts weirdly / wrongly, but do check for the presence of a style named 'fontawesome' .
		wp_register_style('fontawesome', $src);

	}


	static function timeInit()
	{
		if ( ! defined('MAXBUTTONS_BENCHMARK') || MAXBUTTONS_BENCHMARK !== true)
			return;

		self::$timer = microtime(true);

		if (is_admin())
			add_filter("admin_footer",array(self::namespaceit('maxUtils'), "showTime"), 100);
		else
			add_action("wp_footer",array(self::namespaceit('maxUtils'), "showTime"));

	}

	static function addTime($msg)
	{
		if ( ! defined('MAXBUTTONS_BENCHMARK') || MAXBUTTONS_BENCHMARK !== true)
			return;


		self::$timings[] = array("msg" => $msg,"time" => microtime(true));
	}

	static function startTime($operation)
	{
		if ( ! defined('MAXBUTTONS_BENCHMARK') || MAXBUTTONS_BENCHMARK !== true)
			return;

		self::$time_operations[$operation][] = array("start" => microtime(true),
												   "end" => 0,
													 'memory_start' => memory_get_usage(),
											);

	}

	static function endTime($operation)
	{
		if ( ! defined('MAXBUTTONS_BENCHMARK') || MAXBUTTONS_BENCHMARK !== true)
			return;

		$timedcount = count(self::$time_operations[$operation]);
		for ($i = 0; $i < $timedcount; $i++)
		{
			if (self::$time_operations[$operation][$i]["end"] == 0)
			{
				self::$time_operations[$operation][$i]["end"] = microtime(true);
				self::$time_operations[$operation][$i]["memory_end"] = memory_get_usage();
				break;
			}
		}

	}

	public static function convert_memory($size)
	{
		    $unit=array('b','kb','mb','gb','tb','pb');
		    return @round($size/pow(1024,($i=floor(log($size,1024)))),2).' '.$unit[$i];
	}

	public static function showTime()
	{
		if ( ! defined('MAXBUTTONS_BENCHMARK') || MAXBUTTONS_BENCHMARK !== true)
		return;

			$timer = self::$timer;
			$text = '';
			$text .=  "<div id='mb-timer'>";
			$text .= "<p><strong>Timed Operations</strong></p>";

			foreach(self::$time_operations as $operation => $operations)
			{
				foreach($operations as $index => $data)
				{
					$start = $data["start"];
					$end = $data["end"];
					$duration = $end - $start;
					$mem_start = $data['memory_start'];
					$mem_end = $data['memory_end'];


					$text .= "<span class='first'>$duration</span>
							  <span class='second'>$operation</span>
							  <span class='third'>"  . self::convert_memory($mem_start) . " - " . self::convert_memory($mem_end) . "</span><br />
							 ";
				}
			}


			$text .= "<p><strong>" . __("MaxButtons Loading Time:","maxbuttons") . "</strong></p>";
			$prev_time =0;

			$time_array = array();

			foreach(self::$timings as $timing)
			{
				$cum = ($timing["time"] - $prev_time);
				$text .= "<span class='first'>" . ($timing["time"] - $timer) . "</span><span class='second'> " . $timing["msg"] . "</span><span class='third'>$cum</span> <br /> ";
				//$time_array[$cum] = $timing["msg"];
				$prev_time = $timing["time"];
			}

			/*ksort($time_array);

			$text .= "<br><br><strong>By time taken:</strong><br>";
			foreach($time_array as $timeline)
			{
				$text .= "$timeline <br />";
			}
		*/
			$text .= "</div> ";
			$text .= "<style>#mb-timer { margin-left: 180px; }
					#mb-timer span {
						display: inline-block;
						font-size: 12px;
					}
					#mb-timer span.first {
						width: 170px;
					}
					#mb-timer span.second {
						width: 300px;
					}
					#mb-timer span.third {
						width: 150px;
					}
					</style>";

			echo $text;


			//return $filter . $text;
	}
}
