<?php
/*
Plugin Name: Site Background Slider
Plugin URI: http://www.presspixels.com/release/background-slider/
Description: <a href="http://www.presspixels.com">Press Pixels</a> <a href="http://www.presspixels.com/release/background-slider/">Site Background Slider</a>  for WordPress adds <strong>Fullscreen Image Slideshows to your WebSite Background</strong>. Images are read from a specified folder, a selection of 8 different texture effects can be overlayed onto the images and the transition time between images can also be set. Settings can be found under your <strong>Appearance Menu</strong>!
Version: 1.0.8
Author: Lumo & Skashi @ Press Pixels
Author URI: http://www.presspixels.com

License: GPL2 - http://www.gnu.org/licenses/gpl.txt

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 2
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

// Make sure we don't expose any info if called directly!
if ( !function_exists( 'add_action' ) ) {
    echo "Hi there! I'm just a plugin, not much I can do when called directly.";
    exit;
}

// Version Tracking
define( 'SBS_VERSION', '1.0.8' );

// If Admin Area, add administration options page
if ( is_admin() ) require_once( dirname( __FILE__ ) . '/admin.php' );

// Class Function to filter and remove generator
class SiteBackgroundSlider {

    // Add JavaScript Files Correctly and Pass Variables
    public function javaScriptFiles() {
        global $wp_query;
        $use_jquery            = get_option( 'sbs_use_jquery', '1' );
        if( $use_jquery ) {
            wp_deregister_script('jquery');
            wp_register_script('jquery', ("http://code.jquery.com/jquery-latest.min.js"), false, '');
        }
        wp_register_script( 'jQueryNoConflict',  WP_PLUGIN_URL. "/site-background-slider/assets/jquery.noconflict.js");
        wp_register_script( 'jQueryVegas',  WP_PLUGIN_URL. "/site-background-slider/assets/jquery.vegas.js");
        if( $use_jquery ) { wp_enqueue_script( 'jquery' ); }
        wp_enqueue_script( 'jQueryNoConflict' );
        wp_enqueue_script( 'jQueryVegas' );
        $resize_images = get_option( 'sbs_resize_images', '1' );
        wp_localize_script( 'jQueryVegas', 'jQueryVegasVars', array('ResizeImages' => $resize_images ) );
    }

    // Set and build the background slider javascript string
    public function setBackgroundSlider() {
        global $wp_query;
        $use_jquery            = get_option( 'sbs_use_jquery', '1' );
        $show_load_icon        = get_option( 'sbs_show_load_icon', '1' );
        $bg_delay              = get_option( 'sbs_bg_delay', '3000' );
        $bg_timer              = get_option( 'sbs_bg_timer', '10000' );
        $img_base_path_string  = get_option( 'sbs_img_base_path_string', 'images' );
        $shuffle_images        = get_option( 'sbs_shuffle', '0' );
        $overlay_image         = get_option( 'sbs_overlay_image', 'overlay-08.png' );
        $i                     = 0;
        $img_base_path         = get_bloginfo( 'wpurl' )."/{$img_base_path_string}";
        $files                 = glob( str_replace( "\\", "/", ABSPATH."$img_base_path_string/*" ) );
        $extension_path        = plugins_url()."/site-background-slider";
        $js_add                = $js_bg = $js_preload = $js = "";
        $loading               = $show_load_icon == 1 ? "" : ", loading: false";
        $overlay               = get_option( 'sbs_show_overlay', '1' );
        $justhome              = get_option( 'sbs_just_home', '0' );

        $just_home = (bool)( get_option('sbs_just_home', '1') == 1 ? true : false );
        var_dump(is_home());
        if (($just_home && is_home()) || !$just_home) {

            if( $overlay ) {
                $overlay_txt = "
                        ('overlay', {
                        src:'{$extension_path}/assets/images/overlay/{$overlay_image}'
                        })
                        ";
            } else $overlay_txt = "";

            if( is_array($files) ) {
                if( $shuffle_images == 1 ) shuffle($files);
                foreach( $files as $file ) {
                    $filename     = explode( "/", $file );
                    $filename     = $filename[sizeof($filename)-1];
                    $js_bg       .= "{ src:'{$img_base_path}/{$filename}', fade:{$bg_delay}, delay:{$bg_timer} {$loading} },\n";
                    $js_preload  .= "preloadImg('{$img_base_path}/{$filename}');\n\n";
                    $i++;
                }
                $js .= "
                        <script type=\"text/javascript\">
                        jQuery(document).ready(function(){
                        jQuery.vegas('slideshow', {
                        backgrounds:[
                        $js_bg
                        ]
                        })$overlay_txt;
                        });
                        function preloadImg(imgPath) {
                        preloadImg = new Image();
                        preloadImg.src = imgPath;
                        }
                        </script>
                        <style type=\"text/css\">body > div { position: relative; } .vegas-loading { width: 100px; height: 100px; background: url($extension_path/assets/images/loader.gif) left bottom no-repeat; position: absolute; top: 20px; left: 20px; z-index: 131313}</style>
                        ";
                echo $js;
                }
            }
        }

    public function setBackLink() {
        echo '<p class="pressback" style="position: fixed;bottom: 5px;left: 3px;font-size: 12px;font-weight: normal;letter-spacing: 1px; normal 13px/28px sans-serif; padding:0px 5px; margin: 0px;"><a style="color: #CCC;" href="http://www.presspixels.com">Press Pixels</a><br /><a style="color: #CCC;" href="http://www.presspixels.com/release/background-slider/">Background Slider</a></p>';
    }
}

add_action('init', 'sbs_run');

function sbs_run() {
    if ( !is_admin() ) {
        add_action('wp_enqueue_scripts', array('SiteBackgroundSlider', 'javaScriptFiles'));
        add_action( 'wp_head', array('SiteBackgroundSlider', 'setBackgroundSlider') );
        if ( get_option( 'sbs_link', 0 ) == 1 ) {
            add_action( 'get_template_part_content', array('SiteBackGroundSlider', 'setBackLink') );
        }
    }
}