lepton_abstract.php

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<?php
 
declare(strict_types=1);
 
abstract class LEPTON_abstract
{
    const NOT_SET_IN_INFO = "(unknown - not set in info.php)";
 
    public array $language = [];
 
    public array $parents = [];
 
    public string $module_directory = "";
 
    public string $module_name = "";
 
    public string $module_function = "";
 
    public string $module_version = "";
 
    public string $module_platform = "";
    
    public int $module_delete = 1;
 
    public string $module_author = "";
 
    public string  $module_license = "";
 
    public string $module_license_terms = "";
 
    public string $module_description = "";
 
    public string $module_guid = "";
 
    public string $module_home = "";
 
    public static $instance;
 
    public static function getInstance(mixed $value = null): object
    {
        if (null === static::$instance)
        {
            static::$instance = new static();
            static::$instance->getParents();
            static::$instance->getLanguageFile();
            static::$instance->getModuleInfo();
            static::$instance->initialize($value);
        }
        return static::$instance;
    }
 
    protected function getParents(): void
    {
        // First the class itself
        static::$instance->parents[] = get_class(static::$instance);
 
        // Now the parents
        $aTempParents = class_parents(static::$instance, true);
        foreach($aTempParents as $sParentName)
        {
            static::$instance->parents[] = $sParentName;
        }
    }
 
    protected function getModuleInfo(): void
    {
 
        foreach(static::$instance->parents as $sModuleDirectoryTop)
        {
            //  strip namespace
            $aTemp = explode("\\", $sModuleDirectoryTop);
            foreach($aTemp as $sModuleDirectory)
            {             
 
                $aMainClassNames = $this->getMainClassNames( $sModuleDirectory );
 
                foreach($aMainClassNames as $sTempModuleDirectory)
                {
                    $sLookUpPath = __DIR__."/../../modules/".$sTempModuleDirectory."/info.php";
 
                    if( file_exists($sLookUpPath) )
                    {
                        require $sLookUpPath;
                        // [1.1] mandatory information
                        static::$instance->module_name = ($module_name ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_directory = ($module_directory ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_function = ($module_function ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_version = ($module_version ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_author = ($module_author ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_license = ($module_license ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_description = ($module_description ?? self::NOT_SET_IN_INFO);
                        static::$instance->module_guid = ($module_guid ?? self::NOT_SET_IN_INFO);
 
                        // [1.2] optional information
                        if(isset($module_platform))
                        {
                            static::$instance->module_platform = $module_platform;
                        }
                        if(isset($module_delete))
                        {
                            static::$instance->module_delete = intval($module_delete);
                        }                       
                        if(isset($module_license_terms))
                        {
                            static::$instance->module_license_terms = $module_license_terms;
                        }                       
                        if(isset($module_home))
                        {
                            static::$instance->module_home = $module_home;
                        }
                        break;
                    }
                }
            }            
        }
    }
 
    protected function getLanguageFile(): void
    {
        if(defined("LEPTON_PATH"))
        {
            $aLookUpFilenames = [
                LANGUAGE."_add.php",
                LANGUAGE."_custom.php",
                LANGUAGE.".php",
                "EN_custom.php",
                "EN.php"
            ];
 
            foreach( static::$instance->parents as $sClassNameTop)
            {
                //  strip namespace
                $aTemp = explode("\\", $sClassNameTop);
                $bExitGraceful = false;
                foreach( $aTemp as $sClassName )
                {          
                    $aMainClassNames = $this->getMainClassNames( $sClassName );
 
                    foreach($aMainClassNames as $sTempModuleDirectory)
                    {
                        $lookUpPath = LEPTON_PATH."/modules/".$sTempModuleDirectory."/languages/";
 
                        $bFoundFile = false;
 
                        foreach($aLookUpFilenames as $sTempFilename)
                        {
                            if(true === file_exists( $lookUpPath.$sTempFilename ) )
                            {
                                require $lookUpPath.$sTempFilename;
                                $bFoundFile = true;
                                break;
                            }
                        }
 
                        if(false === $bFoundFile)
                        {
                            continue;
                        }
 
                        $tempName = "MOD_".strtoupper($sTempModuleDirectory);
                        if(isset(${$tempName}))
                        {
                            static::$instance->language = ${$tempName};
                            $bExitGraceful = true;
                            break;
                        }
                    }
                    
                    if(true === $bExitGraceful)
                    {
                        break;
                    }
                }
            }
        }
    }
 
    public function getHeadInfo(): array
    {
        return array(
            "title"         => "",
            "description"   => "",
            "keywords"      => ""
        );
    }
 
    protected function getMainClassNames( $sAnyClassname )
    {
        $aElements = explode("_",  $sAnyClassname);
 
        $sTempName = array_shift($aElements);
 
        $aReturnValue = array( $sTempName );
 
        foreach($aElements as $term)
        {
            $sTempName .= "_".$term;
            $aReturnValue[] = $sTempName;
        }
 
        if( 1 < count($aReturnValue) )
        {
            $aReturnValue = array_reverse( $aReturnValue );
        }
 
        return $aReturnValue;
    }
 
    public static function saveLastEditSection(int $iSectionID = 0): void
    {
        if ($iSectionID === 0)
        {
            if (true === isset($GLOBALS['section_id']))
            {
                $_SESSION['last_edit_section'] = $GLOBALS['section_id'];
            }
        } else {
            $_SESSION['last_edit_section'] = $iSectionID;
        }
    }
 
    public static function getConstants(): array
    {
        // "static::class" here does the magic
        $reflectionClass = new \ReflectionClass(static::class);
        return $reflectionClass->getConstants();
    }
 
    abstract protected function initialize();
 
    public function showmodinfo(array $modvalues = [],bool $bPrompt = true )
    {
        // create a default data set
        $showmodinfo = array(
    /* the leptoken */
            'leptoken'      => get_leptoken() // $leptoken
    /* this object including translations (THIS->language[ code ]) */
            ,"THIS"         => $this
    /* the color to be used for frames */
            ,"COLOR"        => ( $this->module_function == "page" ? "olive" : "blue" )
    /* the header title to be shown */
            ,"HEADER"       => $this->module_name
    /* the module description to be shown */
            ,"DESCRIPTION"  => ( isset( $this->module_description ) ? $this->module_description : "" )
    /* the full url to the image to be shown */
            ,"IMAGE_URL"    => LEPTON_URL."/modules/".$this->module_directory. "/icon.png"
    /* array of buttons to be shown (or not) and how */
            ,"BUTTONS"      => array(
                /*
                 * Listed below are the 4 default buttons, but additional buttons can be added in $modvalues
                 *
                 * Supported attributes:
                 *  AVAILABLE   => true (show active), false (show as no) or hide (do not show, default if not available or empty);
                 *  URL         => url for support details/contact (required when AVAILABLE => true, otherwise not used)
                 *  TITLE       => title to be shown for support button if not default
                 *  ICON        => icon to be shown if not hide
                 */
                 "LIVE_SUPPORT" => array( "AVAILABLE"   => false
                                            ,"URL"      => ""
                                            ,"TITLE"    => ""
                                            ,"ICON"     => "call square"
                                        )
                ,"FORUM_SUPPORT"=> array( "AVAILABLE"   => true
                                            ,"URL"      => "https://forum.lepton-cms.org/viewforum.php?f=14"    // LEPTON forum for addons
                                            ,"TITLE"    => ""
                                            ,"ICON"     => "align left"
                                        )
                ,"README"       => array( "AVAILABLE"   => "hide"
                                            ,"URL"      => ""
                                            ,"TITLE"    => ""
                                            ,"ICON"     => "book"
                                        )
                ,"HELP"         => array( "AVAILABLE"   => "hide"
                                            ,"URL"      => ""
                                            ,"TITLE"    => ""
                                            ,"ICON"     => "question"
                                        )
                )
    /* the data to be shown in sequence added. Also, spacers with unique key can be added.
     * values can also be a link
     * empty values are not shown
     * also spacers can be added, but key must be unique
     */
            ,"INFO"         => array()
        );
        if ( isset( $this->module_version ) && empty( $this->module_version ) === false )
            { $showmodinfo[ "INFO" ][ "module_version" ]    = $this->module_version; }
        if ( isset( $this->module_platform ) && empty( $this->module_platform ) === false )
            { $showmodinfo[ "INFO" ][ "module_platform" ]   = $this->module_platform; }
        if ( isset( $this->module_guid ) && empty( $this->module_guid ) === false )
            { $showmodinfo[ "INFO" ][ "module_guid" ]       = $this->module_guid; }
        if ( isset( $this->module_author ) && empty( $this->module_author ) === false )
            { $showmodinfo[ "INFO" ][ "module_author" ]     = $this->module_author; }
        if ( isset( $this->module_license ) && empty( $this->module_license ) === false )
        {
            $showmodinfo[ "INFO" ][ "S1" ]              = "spacer2";
            $showmodinfo[ "INFO" ][ "module_license" ]  = $this->module_license;
            if ( isset( $this->module_license_terms ) && empty( $this->module_license_terms ) === false )
            {
                $showmodinfo[ "INFO" ][ "module_license" ]  .= "<br />" . $this->module_license_terms;
            }
        }
        if ( isset( $this->module_home ) && empty( $this->module_home ) === false )
        {
            $showmodinfo[ "INFO" ][ "S2" ]              = "spacer2";
            if ( strpos ( $this->module_home , "href" ) == 0 )
            {
                $showmodinfo[ "INFO" ][ "module_home" ]     = "<a href='".$this->module_home."' >".$this->module_home."</a>";
            }
            else
            {
                $showmodinfo[ "INFO" ][ "module_home" ]     = $this->module_home;
            }
        }
        // additional info values are normally not shown or are already used explicitly
 
        // [1] load input params if available and merge with the default data set
        if ( ( is_null( $modvalues ) === false )    // ist gesetzt
            && ( is_array( $modvalues ) === true )  // ist ein array
            && ( !empty( $modvalues ) )             // ist NICHT leer
        )
        {
            $showmodinfo = array_replace_recursive( $showmodinfo, $modvalues );
        }
 
        // prepare needed libraries
        $oTWIG = lib_twig_box::getInstance();
 
        // create & render twig template engine
        $sSource = $oTWIG->render(
             "@theme/showmodinfo.lte"
            ,$showmodinfo
        );
        
        if( true === $bPrompt )
        {
            echo $sSource;
 
            return true;
        } else {
            return $sSource;
        }
    }
 
        
    public function getEditorSettings()
    {
        // [1] base class name
        $sBaseClassName = $this->parents[0];
        
        // [2] custom class?
        $sCustom = (class_exists( $sBaseClassName."_settings_custom", true)) ? "_custom" : "";
        // [2.1] class exists?
        if(class_exists($sBaseClassName."_settings".$sCustom, true))
        {
            //  [2.2] try to get instance of the class
            return eval("return ".$sBaseClassName."_settings".$sCustom."::getInstance();");    
        }
        else
        {   
            //  [2.3] class not exists - return NULL
            return NULL;
        }
    }
    
    public function getAdditionalClass( string $basename="settings", string $classname="") : mixed
    {
        // [1] Basename
        if($classname === "")
        {
            $classname = $this->parents[0];
        }
        
        // [2] Custom?
        $custom = (class_exists($classname."_".$basename."_custom", true)) ? "_custom" : "";
        
        // [3] class exists?
        if( class_exists( $classname."_".$basename.$custom, true))
        {
            return eval("return ".$classname."_".$basename.$custom."::getInstance();");
        }
        else
        {
            return NULL;
        }
    }
}