<?php

class Sphere_Theme extends Sphere_Viewer {

        /**
         * Function to get the path of a given style sheet or default style sheet
         * @param <String> $fileName
         * @return <string / Boolean> - file path , false if not exists
         */
        public static function getStylePath($fileName=''){
                // Default CSS for better performance, LESS format for development.
                if(empty($fileName)) {
                        $fileName = 'style.css';
                }
                $filePath =  self::getThemePath() . '/' . $fileName;
                $fallbackPath = self::getBaseThemePath() . '/' . self::getDefaultThemeName() .'/' .'style.less' ;

                $completeFilePath = Sphere_Loader::resolveNameToPath('~'.$filePath);
                $completeFallBackPath = Sphere_Loader::resolveNameToPath('~'.$fallbackPath);

                if(file_exists($completeFilePath)){
                        return $filePath;
                }
                else if(file_exists($completeFallBackPath)){
                        return $fallbackPath;
                }
                // Exception should be thrown???
                return false;
        }

        /**
         * Function to get the image path
         * This checks image in selected theme if not in images folder if it doest nor exists either case will retutn false
         * @param <string> $imageFileName - file name with extension
         * @return <string/boolean> - returns file path if exists or false;
         */
        public static function getImagePath($imageFileName){
                $imageFilePath = self::getThemePath() . '/' . 'images' . '/' . $imageFileName;
                $fallbackPath = self::getBaseThemePath() . '/' . 'images' . '/' . $imageFileName;
                $completeImageFilePath = Sphere_Loader::resolveNameToPath('~'.$imageFilePath);
                $completeFallBackThemePath = Sphere_Loader::resolveNameToPath('~'.$fallbackPath);

                if(file_exists($completeImageFilePath)){
                        return $imageFilePath;
                }
                else if(file_exists($completeFallBackThemePath)){
                        return $fallbackPath;
                }
                return false;
        }
        /**
         * Function to get the Base Theme Path, until theme folder not selected theme folder
         * @return <string> - theme folder
         */
        public static function getBaseThemePath(){
                return 'layouts'. '/' . self::getLayoutName(). '/skins';
        }

        /**
         * Function to get the selected theme folder path
         * @return <string> -  selected theme path
         */
        public static function getThemePath($theme=''){
                if(empty($theme)) {
                        $theme = self::getDefaultThemeName();
                }

                $selectedThemePath = self::getBaseThemePath() . '/' . $theme;
                $fallBackThemePath = self::getBaseThemePath() . '/' . self::getDefaultThemeName();

                $completeSelectedThemePath = Sphere_Loader::resolveNameToPath('~'.$selectedThemePath);
                $completeFallBackThemePath = Sphere_Loader::resolveNameToPath('~'.$fallBackThemePath);

                if(file_exists($completeSelectedThemePath)){
                        return $selectedThemePath;
                }
                else if(file_exists($completeFallBackThemePath)){
                        return $fallBackThemePath;
                }
                return false;
        }

        /**
         * Function to get the default theme name
         * @return <String> - Default theme name
         */
        public static function getDefaultThemeName(){
                $currentUserModel = Users_Record_Model::getCurrentUserModel();
                $theme = $currentUserModel->get('theme');
                return empty($theme)? self::DEFAULTTHEME : $theme;
        }

    /**
     * Function to returns all skins(themes)
     * @return <Array>
     */
    public static function getAllSkins(){
        return Sphere_Util_Helper::getAllSkins();
    }

        /**
         * Function returns the current users skin(theme) path
         */
        public static function getCurrentUserThemePath() {
                $themeName = self::getDefaultThemeName();
                $baseLayoutPath = self::getBaseThemePath();
                return $baseLayoutPath. '/' .$themeName;
        }
}

function vimage_path($imageName) {
        $args = func_get_args();
        return call_user_func_array(array('Sphere_Theme', 'getImagePath'), $args);
}