<?php
/*
Plugin Name: Amazon Product In a Post Plugin
Plugin URI: http://fischercreativemedia.com/wordpress-plugins/amazon-affiliate-product-in-a-post/
Description: Quickly add a formatted Amazon Product (image, pricing and buy button, etc.) to a post, page, custom post type or text widget by using just the Amazon product ASIN (ISBN-10). Great for writing product reviews or descriptions to help monetize your posts and add content that is relevant to your site. You can also customize the styles for the product data. Remember to add your Amazon Affiliate ID on the <a href="admin.php?page=apipp_plugin_admin">options</a> page or you will not get credit for product sales. Requires signup for an Amazon Affiliate Account and Product Advertising API Keys which are currently FREE from Amazon.
Author: Don Fischer
Author URI: http://www.fischercreativemedia.com/
Version: 3.5.2
    Copyright (C) 2009-2013 Donald J. Fischer
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    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.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

// Variables
	global $public_key;
	global $private_key; 
	global $aws_partner_id;
	global $aws_eatra_pages;
	global $aws_plugin_version;
	global $aws_plugin_dbversion;
	global $aws_partner_locale;
	global $thedefaultapippstyle;
	global $amazonhiddenmsg;
	global $amazonerrormsg;
	global $apipphookexcerpt;
	global $apipphookcontent;
	global $apippopennewwindow;
	global $apippnewwindowhtml;
	global $encodemode;
	global $appip_text_lgimage;
	global $appip_text_listprice; 
	global $appip_text_newfrom; 
	global $appip_text_usedfrom;
	global $appip_text_instock;
	global $appip_text_outofstock; 
	global $appip_text_author;
	global $appip_text_starring;
	global $appip_text_director;
	global $appip_text_reldate;
	global $appip_text_preorder;
	global $appip_text_releasedon;
	global $appip_text_notavalarea;
	global $appip_text_manufacturer;
	global $appip_text_ESRBAgeRating;
	global $appip_text_feature;
	global $appip_text_platform;
	global $appip_text_genre;
	global $buyamzonbutton;
	global $addestrabuybutton;
	global $awspagequery;
	global $apip_language;
	global $appuninstall;
	global $appuninstallall;
	global $validEncModes;
	
	register_activation_hook(__FILE__,'appip_install');
	register_deactivation_hook(__FILE__,'appip_deinstall');
	
// MISC Settings, etc.
	//session_start();	
    //if(!isset($_SESSION['Amazon-PIPP-Cart-HMAC'])) $_SESSION['Amazon-PIPP-Cart-HMAC'] = '';
    //if(!isset($_SESSION['Amazon-PIPP-Cart-Encoded-HMAC'])) $_SESSION['Amazon-PIPP-Cart-Encoded-HMAC']='';
    //if(!isset($_SESSION['Amazon-PIPP-Cart-ID'])) $_SESSION['Amazon-PIPP-Cart-ID']='';

	//allow those that can not use file_get_contents() to use Curl instead.		
	if(get_option('appip_amazon_usefilegetcontents')==''){update_option('appip_amazon_usefilegetcontents','1');}
	if(get_option('appip_amazon_usecurl')==''){update_option('appip_amazon_usecurl','0');}
	if(get_option('apipp_API_call_method')=='' && get_option('appip_amazon_usecurl')=='0'){
		update_option('apipp_API_call_method','0');}
	elseif(get_option('apipp_API_call_method')=='' && get_option('appip_amazon_usecurl')!='1'){
		update_option('apipp_API_call_method','1');
	}
	
	$appipitemnumber	= 0;
	$awspagequery		= '';
	$public_key 		= get_option('apipp_amazon_publickey'); //Developer Public AWS Key Removed
	$private_key 		= get_option('apipp_amazon_secretkey'); //Developer Secret AWS Key Removed
	$appuninstall 		= get_option('apipp_uninstall'); //Uninstall database and options
	$appuninstallall	= get_option('apipp_uninstall_all'); //Uninstall shortcodes in pages an posts
	$aws_partner_id		= get_option('apipp_amazon_associateid'); //Amazon Partner ID 
	$awsPageRequest 	= 1;
	$aws_plugin_version = "3.5.2";
	$aws_plugin_dbversion = '3.5.2';
	$amazonhiddenmsg 	= get_option('apipp_amazon_hiddenprice_message'); //Amazon Hidden Price Message
	$amazonerrormsg 	= get_option('apipp_amazon_notavailable_message'); //Amazon Error No Product Message
	$apipphookexcerpt 	= get_option('apipp_hook_excerpt'); //Hook the excerpt?
	$apipphookcontent 	= get_option('apipp_hook_content'); //Hook the content?
	$apippopennewwindow = get_option('apipp_open_new_window'); //open in new window?
	$aws_eatra_pages 	= '';
	$aws_eatra_pages 	= '"ItemPage"=>"'.$awspagequery.'",';
	$thereapippstyles 	= get_option("apipp_product_styles_default"); 
	$apippnewwindowhtml	= '';
	$apip_getmethod 	= get_option('apipp_API_call_method');
	$apip_usefileget 	= '0';
	$apip_usecurlget	= '0';
	$encodemode 		= get_option('appip_encodemode'); //UTF-8 will be default
	$validEncModes 		= array('ISO-8859-1','ASCII','ISO-8859-2','ISO-8859-3','ISO-8859-4','ISO-8859-5','ISO-8859-6','ISO-8859-7','ISO-8859-8','ISO-8859-9','ISO-8859-10','ISO-8859-15','ISO-2022-JP','ISO-2022-JP-2','ISO-2022-KR','UTF-8','UTF-16');
	
	// api get method defaults/check
	if($apip_getmethod=='0'){
		$apip_usefileget = '1';
	}
	if($apip_getmethod=='1'){
		$apip_usecurlget = '1';
	}
	if($apip_getmethod==''){
		$apip_usefileget = '1'; //set default if not set
	}
	
	//Encode Mode
	if(get_option('appip_encodemode')==''){
		update_option('appip_encodemode','UTF-8'); //set default to UTF-8
		$encodemode="UTF-8";
	}
	
	//backward compat.
	if(!function_exists('mb_convert_encoding')){
		function mb_convert_encoding($etext='', $encodemode='', $encis=''){
			return $etext;
		}
	}	
	if(!function_exists('mb_detect_encoding')){
		function mb_detect_encoding($etext='', $encodemode=array(),$encstrict = false){
			return $etext;
		}
	}	
	if(!function_exists('mb_detect_order')){
		function mb_detect_order(){
			return array('ASCII','ISO-8859-1','UTF-8');
		}
	}	
	
	// Change encoding if needed via GET -  use http://yoursite.com/?resetenc=UTF-8 or http://yoursite.com/?resetenc=ISO-8859-1 - this will be the mode you want the text OUTPUT as.
	if(isset($_GET['resetenc'])){
		if(in_array(strtoupper($_GET['resetenc']),$validEncModes)){
			update_option('appip_encodemode',strtoupper($_GET['resetenc']));
			$encodemode = strtoupper($_GET['resetenc']);
		}
	}
	if($apippopennewwindow==true){
		$apippnewwindowhtml=' target="amazonwin" ';
	}
	if($amazonerrormsg==''){
		$amazonerrormsg='Product Unavailable.';
	}
	if($amazonhiddenmsg==''){
		$amazonhiddenmsg='Visit Amazon for Price.';
	}
	if($aws_partner_locale==''){
		//update_option('apipp_amazon_locale','com'); //set default to US
		//$aws_partner_locale='com';
	}
	if($aws_partner_id==''){
		$aws_partner_id = ""; //Amazon Partner ID - if one is not set up, plugin will not output product!!
	}
	if($public_key==''){
		$public_key = "";  //Developer Public AWS Key Removed 3.5.1
	}
	if($private_key==''){
		$private_key = ""; //Developer Secret AWS Key Removed 3.5.1
	}
	if(isset($_GET['awspage'])){ //future item for search results
		if(is_numeric($_GET['awspage'])){
			$awspagequery = (int)$wpdb->escape($_GET['awspage']);
		}
	}
	if(isset($_GET['awsclearcache'])){ //future item for search results
		if(is_numeric($_GET['awsclearcache'])&& $_GET['awsclearcache'] == '1'){
			global $wpdb;
			$checksql= "DELETE FROM ".$wpdb->prefix."amazoncache;";
			$result = $wpdb->query($checksql);
		}
	}
	if($awspagequery>1){ //future item for search results
		$awsPageRequest = $awspagequery;
	}
	if(trim(get_option("apipp_product_styles")) == ''){ //reset to default styles if user deletes styles in admin
		update_option("apipp_product_styles",$thedefaultapippstyle);
	}
	if(trim(get_option("apipp_amazon_debugkey")) == ''){ //generate debug key
		$randomkey = md5(uniqid(get_bloginfo('url').time(), true));
		update_option("apipp_amazon_debugkey",$randomkey);
	}

// Filters & Hooks
	add_filter('the_content', 'aws_prodinpost_filter_content', 10); //hook content - we will filter the override after
	add_filter('the_excerpt', 'aws_prodinpost_filter_excerpt', 10); //hook excerpt - we will filter the override after 
	add_action('wp_head','aws_prodinpost_addhead',10); //add styles to head
	add_action('wp','add_appip_jquery'); //enqueue scripts
	add_action('admin_head','aws_prodinpost_addadminhead',10); //add admin styles to admin head
	//add_action('wp','aws_prodinpost_cartsetup', 1, 2); //Future Item
	add_action( 'plugin_action_links_' . plugin_basename(__FILE__),'apipp_filter_plugin_actions' );
	add_filter( 'plugin_row_meta',  'apipp_filter_plugin_links', 10, 2 );

	function apipp_filter_plugin_actions($links){$new_links = array();$new_links[] = '<a href="admin.php?page=apipp-main-menu">Getting Started</a>';return array_merge($links,$new_links );}
	function apipp_filter_plugin_links($links, $file){if ( $file == plugin_basename(__FILE__) ){$links[] = '<a href="admin.php?page=apipp-main-menu">Getting Started</a>';$links[] = '<a href="admin.php?page=apipp_plugin-shortcode">Shortcode Usage</a>';$links[] = '<a href="admin.php?page=apipp_plugin-faqs">FAQs</a>';$links[] = '<a target="_blank" href="http://fischercreativemedia.com/donations/">Donate</a>';}return $links;}

	
// Warnings Quickfix
	if(get_option('apipp_hide_warnings_quickfix')==true){
		 ini_set("display_errors", 0); //turns off error display
	}

// Includes
	require_once("inc/amazon-product-in-a-post-activation.php"); 		//Install and Uninstall hooks
	require_once("inc/amazon-product-in-a-post-functions.php"); 		//Functions
	require_once("inc/sha256.inc.php"); 								//required for php4
	require_once("inc/aws_signed_request.php"); 						//major workhorse for plugin
	require_once("inc/amazon-product-in-a-post-tools.php"); 			//edit box for plugin
	require_once("inc/amazon-product-in-a-post-options.php"); 			//admin options for plugin
	require_once("inc/amazon-product-in-a-post-translations.php"); 		//translations for plugin
	require_once("inc/amazon-product-in-a-post-styles-product.php"); 	//styles for plugin
	require_once("inc/amazon-product-in-a-post-shortcodes.php"); 		//shortcodes for plugin


	$thisstyleversion	=	get_option('apipp_product_styles_default_version');
	//upgrade check. Lets me add/change the default style etc to fix/add new items during updrages.
	if($thisstyleversion != "1.9" || get_option("apipp_product_styles_default")==''){
		if(get_option("apipp_product_styles_default")==''){update_option("apipp_product_styles_default",$thedefaultapippstyle);}
		update_option("apipp_product_styles_default_version","1.9");
		//add the new element style to their custom ones - so at least it has the default functionality. They can change it after if they like
		$apipp_product_styles_cust_temp = get_option("apipp_product_styles");
 		if($apipp_product_styles_cust_temp!=''){
 			update_option("apipp_product_styles",$apipp_product_styles_cust_temp."\n".".amazon-manufacturer{color : #666;font-size : 12px;}"."\n".".amazon-ESRB{color : #666;font-size : 12px;}"."\n".".amazon-feature{color : #666;font-size : 12px;}"."\n".".amazon-platform{color : #666;font-size : 12px;}"."\n".".amazon-system{color : #666;font-size : 12px;}"."\n");
 		}
		if( get_option("apipp_amazon_notavailable_message") == ''){update_option("apipp_amazon_notavailable_message","This item is may not be available in your area. Please click the image or title of product to check pricing & availability.");} //default message
		if( get_option("apipp_amazon_hiddenprice_message") == ''){update_option("apipp_amazon_hiddenprice_message","Price Not Listed");} //default message - done
		if( get_option("apipp_hook_content") == ''){update_option("apipp_hook_content","1");} //default is yes - done
		if( get_option("apipp_hook_excerpt") == ''){update_option("apipp_hook_excerpt","0");}//default is no - done
		if( get_option("apipp_open_new_window") == ''){update_option('apipp_open_new_window',"0");} //default is no - newoption added at 1.6 - done
	}

add_action('admin_menu', 'llkl_js_libs'); 
function llkl_js_libs() {
	if ( $_GET['page'] == "appip-layout-styles" ) {
		wp_enqueue_script('jquery');
		wp_enqueue_script('jquery-ui-core');
		wp_enqueue_script('jquery-ui-sortable');
	}
}