<?php
/*
 * Plugin Name: Paulund Envato Shortcodes
 * Version: 1
 * Plugin URI: http://www.paulund.co.uk
 * Description: Create a number of shortcodes to be used in your Wordpress themes
 * Author: Paul Underwood
 * Author URI: http://www.paulund.co.uk
 * License: GPL2 

    Copyright 2012  Paul Underwood

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License,
    version 2, as published by the Free Software Foundation. 

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details. 
*/

// Enable shortcodes in widget areas
add_filter( 'widget_text', 'do_shortcode' );

// Envato Shortcodes
add_shortcode( 'paulund_envato_popular', 'paulund_envato_popular_function' );
add_shortcode( 'paulund_envato_features', 'paulund_envato_features_function' );
add_shortcode( 'paulund_envato_new_files', 'paulund_envato_new_files_function' );
add_shortcode( 'paulund_envato_new_files_from_user', 'paulund_envato_new_files_from_user_function' );
add_shortcode( 'paulund_envato_random_new_files', 'paulund_envato_random_new_files_function' );
add_shortcode( 'paulund_envato_item', 'paulund_envato_item_function' );
add_shortcode( 'paulund_envato_user', 'paulund_envato_user_function' );

/**
 * Get popular envato files
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_popular_function( $atts, $content = null ){									
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("popular");
	$envato->Set_Category($atts["category"]);
	$envato->Display_Items();
}

/**
 * Get featured envato files
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_features_function( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("features");
	$envato->Set_Category($atts["category"]);
	$envato->Display_Items();
}

/**
 * Get new envato files
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_new_files_function( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("new-files");
	$envato->Display_Items();
}

/**
 * Get new envato files for user
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_new_files_from_user_function( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("new-files-from-user");
	$envato->Display_Items();
}

/**
 * Get random new envato files
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_random_new_files_function( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("random-new-files");
	$envato->Display_Items();
}

/**
 * Get specific envato file item
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_item_function ( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("item");
	$envato->Display_Items();
}

/**
 * Get envato files for specific user
 * 
 * @param $atts - Attributes in the shortcode
 * @param $content - Content in shortcode can be null
 */
function paulund_envato_user_function( $atts, $content = null ){
	$envato = new Paulund_Envato($atts);
	
	$envato->Set("user");
	$envato->Display_Items();
}

/**
 * The class wrapper for envato API
 */
class Paulund_Envato{

	/**
	 * Shortcode attributes
	 */
	private $atts = FALSE;
	
	/**
	 * The API URL
	 */
	private $url = FALSE;
	
	/**
	 * All items
	 */
	private $items = FALSE;
	
	/**
	 * Set debug mode
	 */
	private $debug = FALSE;
	
	/**
	 * Constructor for wrapper class
	 * 
	 * @param $atts - Shortcode attributes
	 */
	public function __construct( $atts ){
		// Set default attributes
		$this->atts = shortcode_atts(array(	
									'marketplace' 		=> '',
   									'set' 				=> '',
   									'category' 			=> '',
   									'limit' 			=> '',
   									'id' 				=> '',
   									'user' 				=> '',
   									'search' 			=> '',
   									'ref' 				=> 'paulund',
   									'buttontext'		=> 'Buy Now',
   									'displaytitle' 		=> 'true',
   									'displayimage' 		=> 'true',
									'displaysales' 		=> '',
									'displayrating' 	=> '',
									'displaycost'	 	=> 'true',
									'displaytags' 		=> '',
									'displaycategory' 	=> '',
									'displaynumberfiles'=> '',
									'displaybutton'		=> 'true',
									'debug'				=> 'false'), $atts);
		
		// If debug mode is on set class field to true							
		if($this->atts["debug"] == 'true'){
			$this->debug = TRUE;
		}
	}
	
	/**
	 * Defines which set of files we want
	 * 
	 * @param $set - Set of files
	 */
	public function Set( $set ){
		$this->atts["set"] = $set;	
	}
	
	/**
	 * Defines which category we want from set of files
	 * Used on searches such as popular which return popular last week, popular last 3 months and popular authors
	 * 
	 * @param $category - Defines category
	 */
	public function Set_Category( $category ){
		$this->atts["category"] = $category;	
	}
	
	/**
	 * Works out the URL to call by the attributes sent
	 */
	private function Set_Url( $format = ".json"){
		$url = "http://marketplace.envato.com/api/edge/";
		
		if( $this->atts["set"] != "" ){
			$url .= $this->atts["set"];
		}
		
		if( $this->atts["marketplace"] != "" ){
			$url .= ":".$this->atts["marketplace"];
		}
		
		if( $this->atts["id"] != "" ){
			$url .= ":".$this->atts["id"];
		}
		
		$url .= $format;
		
		$this->url = $url;
	}
	
	/**
	 * The main method for the class which will set the url, get the items, parse the items and display each items
	 */
	public function Display_Items(){
		
		// Set the URL
		$this->Set_Url();
		
		// Display debug messages
		if($this->debug){
			echo 'Start Display Items';
			echo '<pre>';
			print_r($this->atts);
			echo '</pre>';
		}
		
		// Extract the variables from array
		extract($this->atts);
				
		// Make sure that at least one of these are set					
		if( $id == '' && $marketplace == '' && $set == ''){
			return;
		}
		
		// Get the items
		$this->Get_Items();
		
		// Parse the correct category
		$this->Parse_Category();
		
		// Displays each item
		$this->Display_Each_Item();
	}
	
	/**
	 * Uses the Wordpress remote get function to return the json items
	 */
	public function Get_Items(){
		// Get items as json
		$json = wp_remote_get( $this->url );
		
		// Display debug messages
		if($this->debug){
			echo 'Get Items';
			echo 'URL - '.$this->url;
			echo '<pre>';
			print_r($json);
			echo '</pre>';
		}
		
		// Set the items variable with the body of the json
		$this->items = json_decode($json["body"], true);		
	}
	
	/**
	 * Parse the items to get exactly the data we want
	 */
	private function Parse_Category(){
			
		// Display debug messages
		if($this->debug){
			echo 'Parse Category';
			echo '<pre>';
			print_r($this->atts);
			print_r($parsed_items);
			echo '</pre>';
		}
		
		// Set the items
		$items = $this->items;
		
		// Get the set of items we want
		if($this->atts["set"] != ""){
			$parsed_items = $items[$this->atts["set"]];	
		}
		
		// Get the category of items we want
		if($this->atts["category"] != ""){
			$parsed_items = $parsed_items[$this->atts["category"]];
		}
		
		// Limit the items to the amount we want back
		if($this->atts["limit"] != ""){
			$parsed_items = array_slice($parsed_items, 0, $this->atts["limit"]);
		}
		
		// Display the parsed items
		if($this->debug){
			echo 'End Parse Category Display Items';
			echo '<pre>';
			print_r($parsed_items);
			echo '</pre>';
		}
		
		// Set the items variable to the new parsed items
		$this->items = $parsed_items;
	}
	
	/**
	 * Loop through all of the items to display each item
	 */
	private function Display_Each_Item(){
		
		// Display the debug messages
		if($this->debug){
			echo 'Display Each Items';
			echo '<pre>';
			print_r($this->items);
			echo '</pre>';
		}

		// Set the attributes variable
		$atts = $this->atts;
		
		// Make sure that the items are inside an array
		if(!is_array($this->items[0])){
			$this->items = array($this->items);
		}
				
		// Loop through all items to display on the page
		foreach($this->items as $item){
			$url = $item["url"]."?ref=".$atts["ref"];
			
			?><div class="paulund_envato"><?php
			
			// Display the title
			if($atts["displaytitle"] == "true"){
				$title = NULL;
				
				if(isset($item["item"])){
					$title = $item["item"];
				}
				
				if(isset($item["title"])){
					$title = $item["title"];
				}
				
				if($title != NULL){
					?><h2 class="paulund_envato_header"><?php echo $title;?></h2><?php	
				}
			}
			
			// Display image
			if($atts["displayimage"] == "true"){
				$image = NULL;
				
				if(isset($item["live_preview_url"]) && $image == NULL){
					$image = $item["live_preview_url"];
				}
				
				if(isset($item["image"]) && $image == NULL){
					$image = $item["image"];
				}
				
				if(isset($item["thumbnail"]) && $image == NULL){
					$image = $item["thumbnail"];
				}
				
				if($image != NULL){
				?>
				<a href="<?php echo $url;?>" target="_blank">
					<img class="paulund_envato_image" 
						src="<?php echo $image;?>" 
							alt="<?php echo $item["item"];?>" />
					</a>
				<?php
				}
			}
			
			// Display sales
			if($atts["displaysales"] == "true"){
				?><p class="paulund_envato_sales">Total Sales: <?php echo $item["sales"];?></p><?php
			}
			
			// Display ratings
			if($atts["displayrating"] == "true"){
				?><p class="paulund_envato_rating">Rating: <?php echo $item["rating"];?> out of 5</p><?php
			}
			
			// Display the cost
			if($atts["displaycost"] == "true"){
				?><p class="paulund_envato_cost">Price: $<?php echo $item["cost"];?></p><?php
			}
			
			// Display the tags
			if($atts["displaytags"] == "true"){
				?><p class="paulund_envato_tags">Tags: <?php echo $item["tags"];?></p><?php
			}
			
			// Display the category
			if($atts["displaycategory"] == "true"){
				?><p class="paulund_envato_category">Category: <?php echo $item["category"];?></p><?php
			}
			
			// Display the number of files
			if($atts["displaynumberfiles"] == "true"){
				?><p class="paulund_envato_number_files">Number Of Files: <?php echo $item["number_of_files"];?></p><?php
			}
					
			// Display the button
			if($atts["displaybutton"] == "true"){
				?>
				<a href="<?php echo $url; ?>" 
					target="_blank" 
					class="button paulund_envato_button">
					<?php echo $atts["buttontext"]; ?>
					</a>
				<?php	
			}
			
			?>
			
			</div>
			
			<?php

		}
	}
}
?>