138 lines
3.0 KiB
PHP
138 lines
3.0 KiB
PHP
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<?php
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namespace api\core;
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use \error\core\Error;
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use \error\core\Err;
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class Config{
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/* (1) Attributes
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---------------------------------------------------------*/
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/* (1) Static */
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private static $inst = null; // singleton instance
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private static function config_path(){ return __ROOT__.'/config/modules.json'; }
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public static $allowed_http_methods = [ "GET", "POST", "PUT", "DELETE" ];
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/* (2) Instance */
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private $raw;
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public $index;
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public $error;
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/* (2) Private constructor
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*
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* @path<String> Configuration path
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*
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---------------------------------------------------------*/
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private function __construct($path=null){
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// Set default error
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$this->error = new Error(Err::Success);
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/* (1) Access file content
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---------------------------------------------------------*/ {
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/* (1) Vérification existence fichier config */
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if( !file_exists($path) )
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return $this->error->set(Err::UnreachableResource);
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/* (2) Lecture fichier config */
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$conf = @file_get_contents($path);
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/* (3) Si erreur lecture */
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if( $conf === false )
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return $this->error->set(Err::UnreachableResource);
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/* (4) Parsage json */
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$this->raw = json_decode( $conf, true );
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/* (5) Gestion de l'erreur de parsage */
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if( $this->raw == null )
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return $this->error->set(Err::ParsingFailed, 'json');
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}
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/* (2) Construction de l'index des chemins
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---------------------------------------------------------*/ {
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/* (1) Initialisation */
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$this->index = [];
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$ref = [ '/' => array_merge($this->raw) ];
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/* (2) Tant qu'il reste des @ref à traiter */
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while( count($ref) > 0 ){
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/* (2.1) For each ref */
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foreach($ref as $ref_path=>$ref_children){
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/* (2.2) For each children */
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foreach($ref_children as $path=>$method_or_subpath){
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/* (2.2.1) If is an HTTP method -> add to index */
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if( in_array($path, self::$allowed_http_methods) ){
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/* (2.2.1.1) If no index for this path -> add it */
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if( !isset($this->index[$ref_path]) )
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$this->index[$ref_path] = [];
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/* (2.2.1.2) Add the HTTP method definition */
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$this->index[$ref_path][$path] = $method_or_subpath;
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/* (2.2.2) If a sub path -> add it to next refs to process */
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}else{
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if( $ref_path == '/' )
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$ref["$ref_path$path"] = $method_or_subpath;
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else
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$ref["$ref_path/$path"] = $method_or_subpath;
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}
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}
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/* (2.3) In all cases -> remove current from ref */
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unset($ref[$ref_path]);
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}
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}
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}
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}
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/* (3) Static singleton 'get-or-create'
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*
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* @return inst<Config> Configuration singleton
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*
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---------------------------------------------------------*/
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public static function get(){
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/* (1) If @inst already exists -> return singleton */
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if( self::$inst instanceof Config )
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return self::$inst;
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/* (2) If @inst not set -> create singleton and return it */
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self::$inst = new self( self::config_path() );
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return self::$inst;
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}
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}
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