<?php

  class mw_app{

    var $env;
    var $path_file;
    var $pathes;
    var $config_file;
    var $config;
    var $bdd;
    var $error;
    var $DO_SETUP;

    function mw_app($path_file, $DO_SETUP = true){
      $this->DO_SETUP = $DO_SETUP;
      $this->path_file = $path_file;
      $this->pathes = array();
      $this->config_file = "";
      $this->config = array();
      $this->bdd = array();
      $this->error = false;
    }

    function set_env(&$env){
      $this->env =& $env;
    }

    function env(){
      return $this->env;
    }

    function init(){
      if(!$this->init_pathes()) return false;
      if(!$this->init_config()) return false;
      if(!$this->init_env()) return false;
      if($this->config_file) return true;
      if($this->DO_SETUP) $this->setup();
      return false;
    }

    function init_pathes(){
      if(($n = strpos($_SERVER["REQUEST_URI"], "?")) !== false){
        $_SERVER["REQUEST_URI"] = substr($_SERVER["REQUEST_URI"], 0, $n);
      }
      $web_path = explode("/", preg_replace('#/+#','/',$_SERVER["REQUEST_URI"]));
      $this->pathes["web"] = "";
      for($i = 0; $i < count($web_path) - 1; $i++) $this->pathes["web"] .= $web_path[$i]."/";
      if(
            !$this->path_file
        ||  !file_exists($this->path_file)
      ){
        $this->error("le fichier des chemins est introuvable");
        return false;
      }
      require_once $this->path_file;
      if(
            !isset($PATHES)
        ||  !is_array($PATHES)
      ){
        $this->erreur("variable PATHES non defini");
        return false;
      }
      foreach($PATHES as $path_name => $path_value){
        $this->pathes[$path_name] = $path_value;
        $this->pathes[$path_name] .= $path_value && substr($path_value, -1) != "/" ? "/" : "";
      }
      if(
            !isset($this->pathes["mw_dir"])
        ||  !isset($this->pathes["mw_path"])
        ||  !isset($this->pathes["content"])
      ){
        $this->error("variable PATHES incomplete");
        return false;
      }
      if(
            !file_exists($this->pathes["content"])
        ||  !is_dir($this->pathes["content"])
      ){
        $this->error("dossier content introuvable");
        return false;
      }
      if(!is_writable($this->pathes["content"])){
        $this->error("Php ne peut pas ecrire dans le dossier content");
        return false;
      }
      return true;
    }

    function init_config(){
      if(file_exists($config_file = $this->pathes["content"]."config/config.php")){
        $this->config_file = $config_file;
        require_once $this->config_file;
        if(
              isset($CONFIG)
          &&  is_array($CONFIG)
        ){
          foreach($CONFIG as $config_name => $config_value){
            $this->config[$config_name] = $config_value;
          }
        }
        if(
              isset($bdd)
          &&  is_array($bdd)
        ){
          foreach($bdd as $bdd_key => $bdd_value){
            $this->bdd[$bdd_key] = $bdd_value;
          }
        }
      }
      else{
        if(!$this->DO_SETUP){
          $this->error("fichier config.php manquant");
          return false;
        }
      }
      return true;
    }

    function init_env(){
      if(
            !($sxml_class_file = (file_exists($this->pathes["mw_dir"]."libs/sxml.php") ? $this->pathes["mw_dir"]."libs/sxml.php" : ""))
        ||  !($empty_class_file = (file_exists($this->pathes["mw_dir"]."libs/empty_class.php") ? $this->pathes["mw_dir"]."libs/empty_class.php" : ""))
        ||  !($env_class_file = (file_exists($this->pathes["mw_dir"]."env/mw_env.php") ? $this->pathes["mw_dir"]."env/mw_env.php" : ""))
      ){
        $this->error("des fichiers sont introuvables. impossible d'initialiser l'environnement");
        return false;
      }
      if(!class_exists("sxml")) require_once $sxml_class_file;
      if(!class_exists("empty_class")) require_once $empty_class_file;
      if(!class_exists("mw_env")) require_once $env_class_file;
      if(
            !class_exists("sxml")
        ||  !class_exists("empty_class")
        ||  !class_exists("mw_env")
      ){
        $this->error("des classes sont introuvables. impossible d'initialiser l'environnement");
        return false;
      }
      $env = new mw_env(true);
      $this->set_env($env);
      $env->load_modules($this->pathes["mw_dir"], "env/modules/");
      $env->set_config_file($this->config_file);
      $env->set_PATHES($this->pathes);
      $env->init_plugins();
      $env->load_config($this->bdd, $this->config);
      $env->init();
      return true;
    }

    function run($etat = "", $params = array(), $valid_role = true){
      $env = $this->env();
      if(!is_callable(array($env, "run"))) return false;
      $env->run(
        $etat ?
           $etat
        :  (isset($_GET[$env->param("e")]) ? $_GET[$env->param("e")] : ""),
        $params,
        $valid_role
      );
      return true;
    }
  
    function display(){
      $env = $this->env();
      if($env->etat_is_valid()){
        $template = $env->get_template();
        $layout = $env->init_layout();
        $template->render_layout($layout);
      }
    }

    function setup(){
      $env = $this->env();
      $etat = isset($_GET[$env->param("e")]) ? $_GET[$env->param("e")] : "install";
      $env->run($etat, array(), false);
      $this->display();
      exit;
    }

    function error($content){
      $this->error = $content;
    }

    function show_error(){
      echo $this->error;
    }

  }