<?php
/**
 * WooThemes Media Library-driven AJAX File Uploader Module (2010-11-05)
 *
 * Slightly modified for use in the Options Framework.
 */
if ( is_admin() ) {

    // Load additional css and js for image uploads on the Options Framework page
    $of_page = 'appearance_page_options-framework';
    add_action( "admin_print_styles-$of_page", 'optionsframework_mlu_css', 0 );
    add_action( "admin_print_scripts-$of_page", 'optionsframework_mlu_js', 0 );
}

/**
 * Sets up a custom post type to attach image to.  This allows us to have
 * individual galleries for different uploaders.
 */
if ( !function_exists( 'optionsframework_mlu_init' ) ) {

    function optionsframework_mlu_init() {
        register_post_type( 'optionsframework', array(
            'labels' => array(
                'name' => __( 'Theme Options Media', 'options_framework_theme' ),
            ),
            'public' => true,
            'show_ui' => false,
            'capability_type' => 'post',
            'hierarchical' => false,
            'rewrite' => false,
            'supports' => array( 'title', 'editor' ),
            'query_var' => false,
            'can_export' => true,
            'show_in_nav_menus' => false,
            'public' => false
        ) );
    }

}

/**
 * Adds the Thickbox CSS file and specific loading and button images to the header
 * on the pages where this function is called.
 */
if ( !function_exists( 'optionsframework_mlu_css' ) ) {

    function optionsframework_mlu_css() {

        $_html = '';
        $_html .= '<link rel="stylesheet" href="' . site_url() . '/' . WPINC . '/js/thickbox/thickbox.css" type="text/css" media="screen" />' . "\n";
        $_html .= '<script type="text/javascript">
		var tb_pathToImage = "' . site_url() . '/' . WPINC . '/js/thickbox/loadingAnimation.gif";
	    var tb_closeImage = "' . site_url() . '/' . WPINC . '/js/thickbox/tb-close.png";
	    </script>' . "\n";

        echo $_html;
    }

}

/**
 * Registers and enqueues (loads) the necessary JavaScript file for working with the
 * Media Library-driven AJAX File Uploader Module.
 */
if ( !function_exists( 'optionsframework_mlu_js' ) ) {

    function optionsframework_mlu_js() {

        // Registers custom scripts for the Media Library AJAX uploader.
        wp_register_script( 'of-medialibrary-uploader', OPTIONS_FRAMEWORK_DIRECTORY . 'js/of-medialibrary-uploader.js', array( 'jquery', 'thickbox' ) );
        wp_enqueue_script( 'of-medialibrary-uploader' );
        wp_enqueue_script( 'media-upload' );
    }

}

/**
 * Media Uploader Using the WordPress Media Library.
 *
 * Parameters:
 * - string $_id - A token to identify this field (the name).
 * - string $_value - The value of the field, if present.
 * - string $_mode - The display mode of the field.
 * - string $_desc - An optional description of the field.
 * - int $_postid - An optional post id (used in the meta boxes).
 *
 * Dependencies:
 * - optionsframework_mlu_get_silentpost()
 */
if ( !function_exists( 'optionsframework_medialibrary_uploader' ) ) {

    function optionsframework_medialibrary_uploader( $_id, $_value, $_mode = 'full', $_desc = '', $_postid = 0, $_name = '' ) {

        $optionsframework_settings = get_option( 'optionsframework' );

        // Gets the unique option id
        $option_name = $optionsframework_settings['id'];

        $output = '';
        $id = '';
        $class = '';
        $int = '';
        $value = '';
        $name = '';

        $id = strip_tags( strtolower( $_id ) );
        // Change for each field, using a "silent" post. If no post is present, one will be created.
        $int = optionsframework_mlu_get_silentpost( $id );

        // If a value is passed and we don't have a stored value, use the value that's passed through.
        if ( $_value != '' && $value == '' ) {
            $value = $_value;
        }

        if ( $_name != '' ) {
            $name = $option_name . '[' . $id . '][' . $_name . ']';
        } else {
            $name = $option_name . '[' . $id . ']';
        }

        if ( $value ) {
            $class = ' has-file';
        }
        $output .= '<input id="' . $id . '" class="upload' . $class . '" type="text" name="' . $name . '" value="' . $value . '" />' . "\n";
        $output .= '<input id="upload_' . $id . '" class="upload_button button" type="button" value="' . __( 'Upload', 'optionsframeworktheme' ) . '" rel="' . $int . '" />' . "\n";

        if ( $_desc != '' ) {
            $output .= '<span class="of_metabox_desc">' . $_desc . '</span>' . "\n";
        }

        $output .= '<div class="screenshot" id="' . $id . '_image">' . "\n";

        if ( $value != '' ) {
            $remove = '<a href="javascript:(void);" class="mlu_remove button">Remove</a>';
            $image = preg_match( '/(^.*\.jpg|jpeg|png|gif|ico*)/i', $value );
            if ( $image ) {
                $output .= '<img src="' . $value . '" alt="" />' . $remove . '';
            } else {
                $parts = explode( "/", $value );
                for ( $i = 0; $i < sizeof( $parts ); ++$i ) {
                    $title = $parts[$i];
                }

                // No output preview if it's not an image.			
                $output .= '';

                // Standard generic output if it's not an image.	
                $title = __( 'View File', 'optionsframework' );
                $output .= '<div class="no_image"><span class="file_link"><a href="' . $value . '" target="_blank" rel="external">' . $title . '</a></span>' . $remove . '</div>';
            }
        }
        $output .= '</div>' . "\n";
        return $output;
    }

}

/**
 * Uses "silent" posts in the database to store relationships for images.
 * This also creates the facility to collect galleries of, for example, logo images.
 * 
 * Return: $_postid.
 *
 * If no "silent" post is present, one will be created with the type "optionsframework"
 * and the post_name of "of-$_token".
 *
 * Example Usage:
 * optionsframework_mlu_get_silentpost ( 'of_logo' );
 */
if ( !function_exists( 'optionsframework_mlu_get_silentpost' ) ) {

    function optionsframework_mlu_get_silentpost( $_token ) {

        global $wpdb;
        $_id = 0;

        // Check if the token is valid against a whitelist.
        // $_whitelist = array( 'of_logo', 'of_custom_favicon', 'of_ad_top_image' );
        // Sanitise the token.

        $_token = strtolower( str_replace( ' ', '_', $_token ) );

        // if ( in_array( $_token, $_whitelist ) ) {
        if ( $_token ) {

            // Tell the function what to look for in a post.

            $_args = array( 'post_type' => 'optionsframework', 'post_name' => 'of-' . $_token, 'post_status' => 'draft', 'comment_status' => 'closed', 'ping_status' => 'closed' );

            // Look in the database for a "silent" post that meets our criteria.
            $query = 'SELECT ID FROM ' . $wpdb->posts . ' WHERE post_parent = 0';
            foreach ( $_args as $k => $v ) {
                $query .= ' AND ' . $k . ' = "' . $v . '"';
            } // End FOREACH Loop

            $query .= ' LIMIT 1';
            $_posts = $wpdb->get_row( $query );

            // If we've got a post, loop through and get it's ID.
            if ( count( $_posts ) ) {
                $_id = $_posts->ID;
            } else {

                // If no post is present, insert one.
                // Prepare some additional data to go with the post insertion.
                $_words = explode( '_', $_token );
                $_title = join( ' ', $_words );
                $_title = ucwords( $_title );
                $_post_data = array( 'post_title' => $_title );
                $_post_data = array_merge( $_post_data, $_args );
                $_id = wp_insert_post( $_post_data );
            }
        }
        return $_id;
    }

}

/**
 * Trigger code inside the Media Library popup.
 */
if ( !function_exists( 'optionsframework_mlu_insidepopup' ) ) {

    function optionsframework_mlu_insidepopup() {

        if ( isset( $_REQUEST['is_optionsframework'] ) && $_REQUEST['is_optionsframework'] == 'yes' ) {

            add_action( 'admin_head', 'optionsframework_mlu_js_popup' );
            add_filter( 'media_upload_tabs', 'optionsframework_mlu_modify_tabs' );
        }
    }

}

if ( !function_exists( 'optionsframework_mlu_js_popup' ) ) {

    function optionsframework_mlu_js_popup() {

        $_of_title = $_REQUEST['of_title'];
        if ( !$_of_title ) {
            $_of_title = 'file';
        } // End IF Statement
        ?>
        <script type="text/javascript">
            <!--
            jQuery(function($) {
        		
                jQuery.noConflict();
        		
                // Change the title of each tab to use the custom title text instead of "Media File".
                $( 'h3.media-title' ).each ( function () {
                    var current_title = $( this ).html();
                    var new_title = current_title.replace( 'media file', '<?php echo $_of_title; ?>' );
                    $( this ).html( new_title );
        		
                } );
        		
                // Change the text of the "Insert into Post" buttons to read "Use this File".
                $( '.savesend input.button[value*="Insert into Post"], .media-item #go_button' ).attr( 'value', 'Use this File' );
        		
                // Hide the "Insert Gallery" settings box on the "Gallery" tab.
                $( 'div#gallery-settings' ).hide();
        		
                // Preserve the "is_optionsframework" parameter on the "delete" confirmation button.
                $( '.savesend a.del-link' ).click ( function () {
        		
                    var continueButton = $( this ).next( '.del-attachment' ).children( 'a.button[id*="del"]' );
                    var continueHref = continueButton.attr( 'href' );
                    continueHref = continueHref + '&is_optionsframework=yes';
                    continueButton.attr( 'href', continueHref );
        		
                } );
        		
            });
            -->
        </script>
        <?php
    }

}

/**
 * Triggered inside the Media Library popup to modify the title of the "Gallery" tab.
 */
if ( !function_exists( 'optionsframework_mlu_modify_tabs' ) ) {

    function optionsframework_mlu_modify_tabs( $tabs ) {
        $tabs['gallery'] = str_replace( __( 'Gallery', 'optionsframework' ), __( 'Previously Uploaded', 'optionsframework' ), $tabs['gallery'] );
        return $tabs;
    }

}