<?php
/*
Plugin Name: Wordpress Ad Widget
Plugin URI: https://github.com/broadstreetads/wordpress-ad-widget
Description: The easiest way to place ads in your Wordpress sidebar. Go to Settings -> Ad Widget
Version: 2.6.0
Author: Broadstreet Ads
Author URI: http://broadstreetads.com
*/

require_once 'lib/Utility.php';

add_action('admin_init', array('AdWidget_Core', 'registerScripts'));
add_action('widgets_init', array('AdWidget_Core', 'registerWidgets'));
add_action('admin_menu', array('AdWidget_Core', 'registerAdmin'));

/**
 * This class is the core of Ad Widget
 */
class AdWidget_Core
{
    CONST KEY_INSTALL_REPORT = 'AdWidget_Installed';
    CONST VERSION = '2.6.0';
    CONST KEY_WELCOME = 'AdWidget_Welcome';
    
    /**
     * The callback used to register the scripts
     */
    static function registerScripts()
    {
        # Include thickbox on widgets page
        if($GLOBALS['pagenow'] == 'widgets.php')
        {
            wp_enqueue_script('thickbox');
            wp_enqueue_style('thickbox');
            wp_enqueue_script('adwidget-main',  self::getBaseURL().'assets/widgets.js');
        }
    }
    
    /**
     * The callback used to register the widget
     */
    static function registerWidgets()
    {       
        register_widget('AdWidget_HTMLWidget');
        register_widget('AdWidget_ImageWidget');
    }
    
    /**
     * Get the base URL of the plugin installation
     * @return string the base URL
     */
    public static function getBaseURL()
    {   
        return (get_bloginfo('url') . '/wp-content/plugins/ad-widget/');
    }
    
    /**
     * Register the admin settings page
     */
    static function registerAdmin()
    {
        add_options_page('Ad Widget', 'Ad Widget', 'edit_pages', 'adwidget.php', array(__CLASS__, 'adminMenuCallback'));
    }

    /**
     * The function used by WP to print the admin settings page
     */
    static function adminMenuCallback()
    {
        self::sendInstallReportIfNew();
        
        if(isset($_POST['cancel']))
            Broadstreet_Adwidget_Mini_Utility::hasAdserving(false);
        
        if(isset($_POST['subscribe']))
            Broadstreet_Adwidget_Mini_Utility::hasAdserving(true);
        
        include dirname(__FILE__) . '/views/admin.php';
    }
    
    /**
     * Makes a call to the Broadstreet service to collect information information
     *  on the blog in case of errors and other needs.
     */
    public static function sendReport($message = 'General')
    {        
        $report = "$message\n";
        $report .= get_bloginfo('name'). "\n";
        $report .= get_bloginfo('url'). "\n";
        $report .= get_bloginfo('admin_email'). "\n";
        $report .= 'WP Version: ' . get_bloginfo('version'). "\n";
        $report .= 'Plugin Version: ' . self::VERSION . "\n";
        $report .= "$message\n";

        @wp_mail('plugin@broadstreetads.com', "Report: $message", $report);
    }
    
    /**
     * Send a welcome email to the user
     */
    public static function sendWelcome()
    {
        $got_welcome = self::getOption(self::KEY_WELCOME);
        
        if($got_welcome != 'true') {
            $email   = get_bloginfo('admin_email');
            $subject = "Message from WP AdWidget";

            $body = "Thank you for using WP AdWidget! If you have any questions, reach out to kenny@broadstreetads.com.\n\n"
                    . "*One Other Thing*\n\nYou might also be interested in Selfie: http://wordpress.org/plugins/selfie :)\n\n"
                    . "It's self serve advertising that you can implement in a couple minutes.\n\n"
                    . "Best of luck!\n"
                    . "- Kenny Katzgrau\n\n"
                    . '"Our readers are perhaps our greatest untapped resource" - New York Times Innovation Report';

            self::setOption(self::KEY_WELCOME, 'true');
            
            @wp_mail($email, $subject, $body);
        }
    }

    /**
     * If this is a new installation and we've never sent a report to the
     * Broadstreet server, send a packet of basic info about this blog in case
     * issues should arise in the future.
     */
    public static function sendInstallReportIfNew()
    {        
        $install_key = self::KEY_INSTALL_REPORT;
        $upgrade_key = self::KEY_INSTALL_REPORT .'_'. self::VERSION;
        
        $installed = self::getOption($install_key);
        $upgraded  = self::getOption($upgrade_key);
 
        $sent = ($installed && $upgraded);        
        
        if($sent === FALSE)
        {            
            if(!$installed)
            {
                self::sendWelcome();
                self::sendReport("Installation");
                self::setOption($install_key, 'true');
                self::setOption($upgrade_key, 'true');
            }
            else
            {
                self::sendWelcome();
                self::sendReport("Upgrade");
                self::setOption($upgrade_key, 'true');
            }
        }
    }
    
    /**
     * Sets a Wordpress option
     * @param string $name The name of the option to set
     * @param string $value The value of the option to set
     */
    public static function setOption($name, $value)
    {
        if (get_option($name) !== FALSE)
        {
            update_option($name, $value);
        }
        else
        {
            $deprecated = ' ';
            $autoload   = 'yes';
            add_option($name, $value, $deprecated, $autoload);
        }
    }

    /**
     * Gets a Wordpress option
     * @param string    $name The name of the option
     * @param mixed     $default The default value to return if one doesn't exist
     * @return string   The value if the option does exist
     */
    public static function getOption($name, $default = FALSE)
    {
        $value = get_option($name);
        if( $value !== FALSE ) return $value;
        return $default;
    }
}


/**
 * The HTML Widget
 */
class AdWidget_HTMLWidget extends WP_Widget
{
    /**
     * Set the widget options
     */
     function AdWidget_HTMLWidget()
     {
        $widget_ops = array('classname' => 'AdWidget_HTMLWidget', 'description' => 'Place an ad code like Google ads or other ad provider');
        $this->WP_Widget('AdWidget_HTMLWidget', 'Ad: HTML/Javascript Ad', $widget_ops);
     }

     /**
      * Display the widget on the sidebar
      * @param array $args
      * @param array $instance
      */
     function widget($args, $instance)
     {
         extract($args);

         echo $before_widget;
         
         echo "<div style='text-align: center;'>{$instance['w_adcode']}</div>";

         echo $after_widget;
     }

     /**
      * Update the widget info from the admin panel
      * @param array $new_instance
      * @param array $old_instance
      * @return array
      */
     function update($new_instance, $old_instance)
     {
        $instance = $old_instance;
        
        $instance['w_adcode'] = $new_instance['w_adcode'];
        $instance['w_adv']    = $new_instance['w_adv'];
        
        /* New ad? Upload it to Broadstreet */
        if($instance['w_adcode'] && Broadstreet_Adwidget_Mini_Utility::hasAdserving()) {
            
            $advertisement_id = false;
            # New ad?
            if(is_numeric(@$instance['bs_ad_id'])) $advertisement_id = $instance['bs_ad_id'];
            
            # New advertiser?
            if(!$advertisement_id) {
                $api = Broadstreet_Adwidget_Mini_Utility::getClient();
                $adv = $api->createAdvertiser(Broadstreet_Adwidget_Mini_Utility::getNetworkID(), $instance['w_adv']);
                $instance['bs_adv_id'] = $adv->id;
            }
                
            $ad = Broadstreet_Adwidget_Mini_Utility::importHTMLAd(Broadstreet_Adwidget_Mini_Utility::getNetworkID(), 
                    $instance['bs_adv_id'], 
                    $instance['w_adcode'],
                    $advertisement_id);

            if(!$advertisement_id) {
                $instance['bs_ad_html'] = $ad->html;
                $instance['bs_ad_id']   = $ad->id;
                $instance['bs_adv_id']  = $adv->id;
            }
        }

        return $instance;
     }

     /**
      * Display the widget update form
      * @param array $instance
      */
     function form($instance) 
     {

        $defaults = array('w_adcode' => '', 'w_adv' => 'New Advertiser');
        $instance = wp_parse_args((array) $instance, $defaults);
       ?>
       <div class="widget-content">
       <p>Paste your Google ad tag, or any other ad tag in this widget below.</p>
       <p>
            <label for="<?php echo $this->get_field_id('w_adcode'); ?>">Ad Code</label>
            <textarea style="height: 100px;" class="widefat" id="<?php echo $this->get_field_id( 'w_adcode' ); ?>" name="<?php echo $this->get_field_name('w_adcode'); ?>"><?php echo $instance['w_adcode']; ?></textarea>
       </p>
       <p>
            <label for="<?php echo $this->get_field_id('w_adv'); ?>">Advertiser Name</label>
            <input class="widefat" type="text" id="<?php echo $this->get_field_id('w_adv'); ?>" name="<?php echo $this->get_field_name('w_adv'); ?>" value="<?php echo $instance['w_adv']; ?>" />
       </p>
        </div>
       <?php
     }
}
     
/**
 * This is an optional widget to display GitHub projects
 */
class AdWidget_ImageWidget extends WP_Widget
{
    /**
     * Set the widget options
     */
     function AdWidget_ImageWidget()
     {
        $widget_ops = array('classname' => 'AdWidget_ImageWidget', 'description' => 'Place an image ad with a link');
        $this->WP_Widget('AdWidget_ImageWidget', 'Ad: Image/Banner Ad', $widget_ops);
     }

     /**
      * Display the widget on the sidebar
      * @param array $args
      * @param array $instance
      */
     function widget($args, $instance)
     {
        extract($args);
         
        $link   = @$instance['w_link'];
        $img    = @$instance['w_img'];
        $resize = @$instance['w_resize'];
        $new    = @$instance['w_new'];
        $id     = rand(1, 100000);
        
        if($resize == 'yes')
        {
            $resize_s = "style='width: 100%;'";
        }
        else
        {
            $resize_s = '';
        }
        
        # There's a reason for this dumb condition
        if($new == 'yes' || $new == '')
        {
            $target = 'target="_blank"';            
        }
        else
        {
            $target = '';
        }
        
        echo $before_widget;
        
        if(!$img)
        {
            $img  = AdWidget_Core::getBaseURL() . 'assets/sample-ad.png';
            $link = 'http://adsofthefuture.com';
        }
        
        if(Broadstreet_Adwidget_Mini_Utility::hasAdserving() && is_numeric($instance['bs_ad_id']))
        {
            if($resize == 'yes') echo '<style type="text/css">.adwidget-id'.$id.' img { width: 100% !important; height: auto !important; }</style>';
            echo "<span class='adwidget-id$id'>{$instance['bs_ad_html']}</span>";
        }
        else
        {
            echo "<a $target href='$link' alt='Ad'><img $resize_s src='$img' alt='Ad' /></a>";
        }

        echo $after_widget;
     }

     /**
      * Update the widget info from the admin panel
      * @param array $new_instance
      * @param array $old_instance
      * @return array
      */
     function update($new_instance, $old_instance)
     {
        $instance = $old_instance;
        
        $changed = ($instance['w_img'] != $new_instance['w_img'] 
                    || $instance['w_link'] !== $new_instance['w_link']);

        $instance['w_link']    = $new_instance['w_link'];
        $instance['w_img']     = $new_instance['w_img'];
        $instance['w_resize']  = @$new_instance['w_resize'];
        $instance['w_new']     = @$new_instance['w_new'];
        $instance['w_adv']     = $new_instance['w_adv'];
        
        /* New ad? Upload it to Broadstreet */
        if($instance['w_img'] && $changed && Broadstreet_Adwidget_Mini_Utility::hasAdserving()) {
            
            $advertisement_id = false;
            # New ad?
            if(is_numeric(@$instance['bs_ad_id'])) $advertisement_id = $instance['bs_ad_id'];
            
            # New advertiser?
            if(!$advertisement_id) {
                $api = Broadstreet_Adwidget_Mini_Utility::getClient();
                $adv = $api->createAdvertiser(Broadstreet_Adwidget_Mini_Utility::getNetworkID(), $instance['w_adv']);
                $instance['bs_adv_id'] = $adv->id;
            }
                
            $ad = Broadstreet_Adwidget_Mini_Utility::importImageAd(Broadstreet_Adwidget_Mini_Utility::getNetworkID(), 
                    $instance['bs_adv_id'], 
                    $instance['w_img'], 
                    $instance['w_link'],
                    $advertisement_id);

            if(!$advertisement_id) {
                $instance['bs_ad_html'] = $ad->html;
                $instance['bs_ad_id']   = $ad->id;
                $instance['bs_adv_id']  = $adv->id;
            }
        }

        return $instance;
     }

     /**
      * Display the widget update form
      * @param array $instance
      */
     function form($instance) 
     {
        $link_id = $this->get_field_id('w_link');
        $img_id = $this->get_field_id('w_img');
        
        $defaults = array('w_link' => get_bloginfo('url'), 'w_img' => '', 'w_adv' => 'New Advertiser', 'w_resize' => 'no', 'w_new' => 'no');
        
		$instance = wp_parse_args((array) $instance, $defaults);
        
        $img  = $instance['w_img'];
        $link = $instance['w_link'];
        $adv  = $instance['w_adv'];

       ?>
        <div class="widget-content">
       <p style="text-align: center;" class="bs-proof">
           <?php if($instance['w_img']): ?>
                Your ad is ready.
                <br/><br/><strong>Scaled Visual:</strong><br/>
                <div class="bs-proof"><img style="width:100%;" src="<?php echo $instance['w_img'] ?>" alt="Ad" /></div><br/>
           <?php endif; ?>
           <a href="#" class="upload-button" rel="<?php echo $img_id ?>">Click here to upload a new image.</a> You can also paste in an image URL below.
           
       </p>
       <input class="widefat tag" placeholder="Image URL" type="text" id="<?php echo $img_id; ?>" name="<?php echo $this->get_field_name('w_img'); ?>" value="<?php echo htmlentities($instance['w_img']); ?>" />
       <br/><br/> 
       <p>
            <label for="<?php echo $this->get_field_id('w_link'); ?>">Ad Click Destination:</label><br/>
            <input class="widefat" type="text" id="<?php echo $this->get_field_id('w_link'); ?>" name="<?php echo $this->get_field_name('w_link'); ?>" value="<?php echo $instance['w_link']; ?>" />
        </p>
       <p>
            <label for="<?php echo $this->get_field_id('w_adv'); ?>">Advertiser Name:</label><br/>
            <input class="widefat" type="text" id="<?php echo $this->get_field_id('w_adv'); ?>" name="<?php echo $this->get_field_name('w_adv'); ?>" value="<?php echo $instance['w_adv']; ?>" />
        </p>
       <p>
           <label for="<?php echo $this->get_field_id('w_resize'); ?>">Auto Resize to Max Width? </label>
           <input type="checkbox" name="<?php echo $this->get_field_name('w_resize'); ?>" value="yes"  <?php if($instance['w_resize'] == 'yes') echo 'checked'; ?> />
       </p>
       <p>
           <label for="<?php echo $this->get_field_id('w_new'); ?>">Open in New Window? </label>
           <input type="checkbox" name="<?php echo $this->get_field_name('w_new'); ?>" value="yes"  <?php if($instance['w_resize'] == 'yes') echo 'checked'; ?> />
       </p>
       <p>
           <span style="color: green; font-weight: bold;">Tip:</span> If you're using this widget, you might also find <a target="_blank" href="http://wordpress.org/plugins/selfie">Selfie</a> useful.
       </p>
       <?php if(!Broadstreet_Adwidget_Mini_Utility::hasAdserving()): ?>
        <p>
            When you're ready for a more powerful adserver with click reporting <a target="_blank" href="#" onclick="broadstreet_upgrade(); return false;">click here</a>.
            <script language="javascript">
                if(!window.broadstreet_upgrade)
                {
                    function broadstreet_upgrade()
                    {
                        window.send_to_editor = function(html) {
                            tb_remove();
                            alert('Save any unsaved widgets and refresh this page to see new upgraded options');
                        };

                        tb_show('Broadstreet', '<?php echo bsadwidget_get_base_url('views/modal/') ?>' + '?fake=fake&width=650&height=580&TB_iframe=true');
                    }
                }
            </script>
        </p>
        <?php elseif(isset($instance['bs_ad_id'])): ?>
        <p>
            Reporting: <a target="_blank" href="#" onclick="broadstreet_reports(); return false;">View stats for clicks and views</a>
            <script language="javascript">
                if(!window.broadstreet_reports)
                {
                    function broadstreet_reports()
                    {
                        window.send_to_editor = function(html) {
                            tb_remove();
                        };

                        tb_show('Broadstreet', '<?php echo bsadwidget_get_base_url('views/modal/?step=reports&adv_id=' . @$instance['bs_adv_id'] . '&ad_id=' . @$instance['bs_ad_id']) ?>' + '&width=650&height=580&TB_iframe=true');
                    }
                }
            </script>
        </p>
        <?php endif; ?>
        </div>
       <?php
     }
}