<?php 

function thumbnail_menu(){
    $items['admin/config/thumbnail'] = array (
		'title'=>t('PDF thumbnail'),
		'type' => MENU_LOCAL_TASK,
		'access callback'=>'user_access',
        'access arguments' => array('thumbnail_admin'),
		'page callback' => 'drupal_get_form',
		'page arguments' => array('thumbnail_admin_settings'),
		'file' => 'thumbnail.admin.inc',
		'file path' => drupal_get_path('module', 'thumbnail'),
	);
    $items['thumbnail/debug'] = array (
		'title'=>t('PDF thumbnail'),
		'type' => MENU_LOCAL_TASK,
		'access callback'=>'user_access',
        'access arguments' => array('thumbnail_admin'),
		'page callback' => 'thumbnail_debug',
	);
	return $items;
}


function thumbnail_permission() {
  return array(
    'thumbnail_admin' => array(
      'title' => t('Thumbnail admin'),
      'description' => t("Allow user to administrate the Thumbnail client"),
    )
  );
}

function thumbnail_get_thumbnail($url){
    $conf = thumbnail_get_conf();
    if(empty($conf)){
        drupal_set_message("Le module thumbnail n'est pas configuré", "warning");
        return false;
    }
    //dsm($conf);
    $request['output']='json';
    $request['pdf']=$url;
    $request['format']='png';
    $json = thumbnail_get_file($conf['thumbnail_url'], $request, 320);
    return json_decode($json);
}

function thumbnail_save_thumbnail($thumbnail){
    if(isset($thumbnail->thumbnail) && $thumbnail->thumbnail!=''){
        $conf = thumbnail_get_conf();
        file_prepare_directory($conf['thumbnail_local_store'], FILE_CREATE_DIRECTORY);
        $destination = $conf['thumbnail_local_store'].'/'.drupal_basename($thumbnail->thumbnail);
        $data = drupal_http_request($thumbnail->thumbnail);
        if((integer)$data->code < 400){
            $file = file_save_data($data->data, $destination);
            return $file;
        }
    }
    return false;
}

//Cette fonction permet d'aller chercher un fichier à distance
function thumbnail_get_file($url, $post_request, $timeout=45){
	//file_get_contents pose des problèmes de time out on utilise donc préférentiellelement curl 
	if(in_array  ('curl', get_loaded_extensions())){
		$ch = curl_init();
			curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS,$post_request);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); //tps max d'execution du service
			curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); //tps max de connexion au service en seconde
			$r = curl_exec($ch);
		curl_close($ch);
        return $r;
	}
    else return $false;
	//return sandre_removeBOM($r);
}

function thumbnail_debug(){    
    $node = node_load(231);
    //$uri = $node->field_file['und'][0]['uri'];
    //dsm(url(, array('absolute'=>true)));
    //$url = file_create_url($uri);
    //dsm($url);

    if(isset($node->field_document_distant) && !empty($node->field_document_distant['und'])){
        foreach($node->field_document_distant['und'] as $delta=>$link){
            if(strtolower(substr($link['url'], -3))=='pdf'){
                dsm($node);
                $info = thumbnail_get_thumbnail($link['url']);
                dsm($info);
                /*
                $file = thumbnail_save_thumbnail($info);
                if($file){  
                    $node->field_page_de_garde['und'][0] = (array)$file;
                    node_save($node);
                }
                */
                break;
            }
        }
    }
    return "debug";
}


//Fonction de chargement de la configuration du module
function thumbnail_get_conf(){
	return variable_get('thumbnail_configurations', array());
}
//Fonction d'enregistrement de la configuration du module
function thumbnail_set_conf($conf){
	return variable_set('thumbnail_configurations', $conf);
}