<?php

    /**
     * Feed Widget Interface
     *
     * @version 1.0
     * @author Md. Rayhan Chowdhury
     * @package rayFeedReader
     * @license GPL
     */
    interface RayFeedWidget_Interface{
        /**
         * Public widget method
         *
         * @param <type> $data
         * @param <type> $options
         * @return string html
         */
        public function widget($data, $options = array());
    }

    /**
     * Widget Plugin Class for RayFeedReader
     *
     * Render html widget for feed reader based on options
     *
     * config options
     *  - array
     *      - widget:
     *          - optional string
     *          - value 'brief' or 'compact' or 'detail'
     *      - showTitle
     *          - boolean
     *          - whether add blog title or not.
     *
     * @version 1.0
     * @author Md. Rayhan Chowdhury
     * @package rayFeedReader
     * @license GPL
     */
    class RayFeedWidget implements RayFeedWidget_Interface{

        /**
         * HTML widget structure
         *
         * @var array
         * @access public
         */
        public $html = array('brief' => "<div class=\"feed-item feed-brief\">\n
                                            <div class=\"feed-item-title\">\n
                                                <h3><a href='%s'>%s</a></h3>\n
                                                <div class='feed-item-date'>%s</div>\n
                                            </div>\n
                                            <div class=\"feed-item-description\">%s</div>\n
                                        </div>",
            
                                'compact' => "<div class=\"feed-item feed-compact\">\n
                                    <div class=\"feed-item-title\">\n
                                        <h3><a href='%s'>%s</a></h3>\n
                                        <div class='feed-item-date'>%s</div>\n
                                    </div>\n
                                </div>",

                                'detail' => "<div class=\"feed-item feed-detail\">\n
                                    <div class=\"feed-item-title\">\n
                                        <h3><a href='%s'>%s</a></h3>\n
                                        <div class='feed-item-date'>%s</div>\n
                                    </div>\n
                                    <div class=\"feed-item-content\">%s</div>\n
                                </div>",
                            );
        
        /**
         * Return html widget based rendered by widget class
         *
         * @param <type> $data
         * @param <type> $options
         * @return <type>
         */
        function widget($data, $options = array('widget' => 'brief')) {
            switch ($options['widget']) {

                case 'compact':
                    return $this->widgetCompact($data, $options);
                    break;

                case 'detail':
                    return $this->widgetDetail($data, $options);
                    break;
                
                case 'brief':
                default:
                    return $this->widgetBrief($data, $options);
                    break;
            }
        }

        /**
         * Render feed widget with title and date only
         *
         * @param <type> $data
         * @param <type> $options
         * @return <type> 
         */
        function widgetCompact($data, $options = array()) {
            if (empty($data['items'])) {
              return false;
            }

            $out = array();
            foreach ($data['items'] as $item) {
                if (empty($item['date'])) {
                    $item['date'] = '';
                }
                $out[] = sprintf($this->html['compact'], $item['link'], $item['title'], $item['date']);

            }

            $title = '';
            if (empty($options['showtitle'])) {
                $title = sprintf("<div class='feed-title'><h2>%s</h2><hr>%s</div>\n", $data['title'], $data['description']);
            }

            $out = "<div class='feed-container'>\n"  . $title . join(" \n", $out) . "</div>";

            return $out;
        }

        /**
         * Render feed widget with title, date & description
         *
         * @param <type> $data
         * @param <type> $options
         * @return <type> 
         */
        function widgetBrief($data, $options = array()) {
            if (empty($data['items'])) {
              return false;
            }

            $out = array();

            foreach ($data['items'] as $item) {
                if (empty($item['date'])) {
                    $item['date'] = '';
                }

                if (empty($item['description'])) {
                        $item['description'] = $item['content'];
                }
                
                $out[] = sprintf($this->html['brief'], $item['link'], $item['title'], $item['date'], $item['description']);

            }
            
            $title = '';
            if (empty($options['showtitle'])) {
                $title = sprintf("<div class='feed-title'><h2>%s</h2><hr>%s</div>\n", $data['title'], $data['description']);
            }

            $out = "<div class='feed-container'>\n"  . $title . join(" \n", $out) . "</div>";
            

            return $out;
        }

        /**
         * Render blog widget with title, date & content
         *
         * @param <type> $data
         * @param <type> $options
         * @return <type> 
         */
        function widgetDetail($data, $options = array()) {
            if (empty($data['items'])) {
              return false;
            }

            $out = array();
            foreach ($data['items'] as $item) {
                if (empty($item['date'])) {
                    $item['date'] = '';
                }
                if (empty($item['content'])) {
                    $item['content'] = $item['description'];
                }
                $out[] = sprintf($this->html['detail'], $item['link'], $item['title'], $item['date'], $item['content']);

            }
            
            $title = '';
            if (empty($options['showtitle'])) {
                $title = sprintf("<div class='feed-title'><h2>%s</h2><hr>%s</div>\n", $data['title'], $data['description']);
            }

            $out = "<div class='feed-container'>\n"  . $title . join(" \n", $out) . "</div>";

            return $out;
        }
    }
?>