userlike / userlike.php

userlike.php in Lime Connect (formerly Userlike) – WordPress Live Chat plugin 1.0, at userlike.php

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1	<?php
2	/*
3	Plugin Name: Userlike
4	Plugin URI: http://userlike.com
5	Description: Userlike live chat integration for Wordpress
6	Version: 1.0
7	Author: Sven Gebhardt
8	Author URI: http://userlike.com
9	License: GPL2
10
11	Copyright 2012 Sven Gebhardt <sg@unkreativ.org>
12
13	This program is free software; you can redistribute it and/or modify
14	it under the terms of the GNU General Public License, version 2, as
15	published by the Free Software Foundation.
16
17	This program is distributed in the hope that it will be useful,
18	but WITHOUT ANY WARRANTY; without even the implied warranty of
19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	GNU General Public License for more details.
21
22	You should have received a copy of the GNU General Public License
23	along with this program; if not, write to the Free Software
24	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25	*/
26
27	class UserLike {
28	static $is_enabled = false;
29	static $json;
30	static $plugin_dir;
31
32	function init(){
33	add_option("userlike_app_key");
34	add_option("userlike_secret");
35	add_option("userlike_json");
36	add_option("userlike_json_expire");
37	load_plugin_textdomain('userlike', false, dirname(plugin_basename(__FILE__)));
38	self::$is_enabled = (get_option("userlike_app_key") && get_option("userlike_secret"));
39	self::$plugin_dir = get_option('siteurl').'/'.PLUGINDIR.'/userlike/';
40	if(function_exists('current_user_can') && current_user_can('manage_options')){
41	add_action('admin_menu', array(__CLASS__, 'add_settings_page'));
42	add_filter('plugin_action_links', array(__CLASS__, 'register_actions'), 10, 2);
43	}
44
45	if(self::$is_enabled){
46	add_action('wp_footer', array(__CLASS__, 'insert_code'));
47	} else {
48	add_action('admin_notices', array(__CLASS__, 'admin_notice'));
49	}
50	}
51
52	function insert_code(){
53	/* Insert Userlike javascript code into the page */
54	if(!self::$is_enabled) return false;
55	$app_key = get_option("userlike_app_key");
56	$secret = get_option("userlike_secret");
57	$json = self::get_json();
58	echo "<script src=\"//userlike.com/static/chat/javascripts/userlike.min.js\"></script><script>userlikeInit('".$app_key."','".$secret."','".$json."');</script>";
59	}
60
61	function admin_notice(){
62	if(!self::$is_enabled)
63	echo '<div class="error"><p><strong>'.sprintf(__('Userlike integration has not been set up. Please go to the <a href="%s">plugin page</a> and enter your Userlike credentials to enable it.' ), admin_url('options-general.php?page=userlike')).'</strong></p></div>';
64	}
65
66	function add_settings_page(){
67	add_action('admin_init', array(__CLASS__, 'register_settings'));
68	add_submenu_page('options-general.php', 'Userlike', 'Userlike', 'manage_options', 'userlike', array(__CLASS__, 'settings_page'));
69	}
70
71	/* Helper Functions */
72	function get_json($force=false){
73	/*
74	Get the Userlike JSON data from cache, DB or Userlike servers (in that order).
75	Set force to true if you want this function to fetch new data regardless of the cached value.
76	Note that it will then fail if a JSON store cannot be received.
77	*/
78	if(self::$json && !$force) return self::$json;
79	if(time() < get_option("userlike_json_expire") && !$force)
80	$json = get_option("userlike_json");
81	else
82	$json = false;
83	if($json && !$force){
84	self::$json = $json;
85	return $json;
86	} else {
87	$secret = get_option("userlike_secret");
88	$ch = curl_init();
89	$timeout = 5;
90	curl_setopt($ch,CURLOPT_URL,'http://userlike.com/api/chat/widget/config?widget_key='.$secret);
91	curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
92	curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
93	$data = curl_exec($ch);
94	curl_close($ch);
95	if(preg_match("/NOT FOUND/i", $data)){
96	if($force)
97	return false;
98	else
99	return get_option("userlike_json");
100	}
101	self::$json = base64_encode($data);
102	update_option("userlike_json", self::$json);
103	update_option("userlike_json_expire", time()+21600); // expires every 6 hours
104	return self::$json;
105	}
106	}
107
108	function register_settings(){
109	register_setting('userlike', 'userlike_app_key');
110	register_setting('userlike', 'userlike_secret');
111	add_settings_section('userlike', 'Userlike', '', 'userlike');
112	}
113
114	function register_actions($links, $file){
115	$this_plugin = plugin_basename(__FILE__);
116	if($file == $this_plugin && function_exists('admin_url')){
117	$settings_link = '<a href="'.admin_url('options-general.php?page=userlike').'">'.__('Settings', 'userlike').'</a>';
118	array_unshift($links, $settings_link);
119	}
120	return($links);
121	}
122
123	function settings_page(){
124	if(self::$is_enabled){
125	if(!self::get_json(true)){
126	echo '<div id="setting-error-settings_error" class="error settings-error"><p><strong>Could not fetch configuration from Userlike. Please make sure that your credentials are correct! <a href="#" onClick="return userlikeChat();">Click here for live help</a></strong></p></div>';
127	}
128	}
129	$plugin_dir = self::$plugin_dir;
130	$in_userlike = true;
131	require_once "userlike.admin.php";
132	}
133	}
134
135	add_action('init', array('UserLike', 'init'));