<?php
if (!defined('_ECRIRE_INC_VERSION')) {
return;
}

/***************************************
* Importation du JSON des chapitres
* et des autres informations (durée, taille, etc)
***************************************/
include_spip('inc/actions');

function action_importer_emission_dist($arg = null) {

	if (!$arg) {
		$securiser_action = charger_fonction('securiser_action', 'inc');
		$arg = $securiser_action();
	}
	$id_article = $arg;
	$texteReponse = libreavous_import_run($id_article);
	ajax_retour($texteReponse, false);
}
	
function libreavous_import_run($id_article) {
	$existant = sql_select("podcast_code","spip_articles","id_article=".$id_article);
	if ($existant and sql_count($existant)>0) {
		$r = sql_fetch($existant);
		$code_emission = $r["podcast_code"];
		if(strlen($code_emission) == 0) {
			return "Le code de l'émission n'est pas renseigné";
		}
	} else {
		return "Émission inconnue = ".$id_article;
	}
	$erreurs = array();
	$logs = array();
	$json = false;
	$podcast_duree = "";
	$ogg_size = "";
    $mp3_size = "";
    try {
		$jsonUrl = "https://forge.april.org/libreavous/lav-outils/raw/branch/master/podcasts/config/lav-".$code_emission.".json";
		$jsonContents = file_get_contents($jsonUrl);
		if ($jsonContents === false) {
			$erreurs[] = "Erreur d'accès au fichier JSON :".$jsonUrl;
		} else {
			$json = json_decode($jsonContents, true);
			if (!$json) {
				$erreurs[] = "JSON incorrect :".$jsonUrl;
			}
		}
	} catch (Exception $e) {
		 $erreurs[] = $e->getMessage();
    }
	try {
		$podcast_duree = libreavous_import_getDuration($code_emission, null);
	} catch (Exception $e) {
		 $erreurs[] = $e->getMessage();
    }
	try {
		$ogg_size = libreavous_import_getSize($code_emission, null, "ogg");
	} catch (Exception $e) {
		 $erreurs[] = $e->getMessage();
    }
    try {
		$mp3_size = libreavous_import_getSize($code_emission, null, "mp3");
	} catch (Exception $e) {
		 $erreurs[] = $e->getMessage();
    }
    $chapitres = array();
	if (array_key_exists("chapters", $json)) {
		$chapters = $json["chapters"];
		$count = count($chapters);
		if ($count > 0) {
			$duree_sujetlong = 30 * 60;
			$sujetlongIndex = -1;
			for($i = 0; $i < $count; $i++) {
				$chapter = $chapters[$i];
				$chapter["type"] = "";
				$debutSecondes = libreavous_import_toSeconde($chapter["start_timestamp"]);
				$finSecondes = libreavous_import_toSeconde($chapter["end_timestamp"]);
				if ($debutSecondes === false) {
					$erreurs[] = "start_timestamp incorrect : ".$chapter["start_timestamp"];
				} else if ($finSecondes  === false) {
					$erreurs[] = "end_timestamp incorrect : ".$chapter["end_timestamp"];
				} else if ($debutSecondes == $finSecondes) {
					$erreurs[] = "start_timestamp et end_timestamp identiques : ".$chapter["end_timestamp"];
				} else {
					$duree = $finSecondes - $debutSecondes;
					if ($duree > $duree_sujetlong) {
						$sujetlongIndex = $i;
						$duree_sujetlong = $duree;
					}
					$chapter["duree"] = $duree;
				}
				
				if (!array_key_exists("chapter_title", $chapter)) {
					$chapter["chapter_title"] = "";
					$erreurs[] = "Titre de chapitre manquant";
				}
				$chapter["ogg_size"] = "";
				$chapter["mp3_size"] = "";
				if (!array_key_exists("short_chapter_name", $chapter)) {
					$chapter["short_chapter_name"] = "";
					$erreurs[] = "Nom de fichier manquant";
				} else {
					try {
						$chapter["ogg_size"] = libreavous_import_getSize($code_emission, $chapter["short_chapter_name"], "ogg");
					} catch (Exception $e) {
						$erreurs[] = $e->getMessage();
					}
					try {
						$chapter["mp3_size"] = libreavous_import_getSize($code_emission, $chapter["short_chapter_name"], "mp3");
					} catch (Exception $e) {
						$erreurs[] = $e->getMessage();
					}
				}
				$chapter["chronique"]="";
				$chapitres[] = $chapter;
			}
			for($i = 0; $i < count($chapitres); $i++) {
				if ($i == $sujetlongIndex) {
					$chapitres[$i]["type"] = "SL";
				} else {
					$array = libreavous_import_checkType($chapitres[$i]);
					$chapitres[$i]["type"] = $array[0];
					if (count($array) > 1) {
						$chapitres[$i]["chronique"] = $array[1];
					}
				}
			}
		}
	}
	$emissionArray = array(
		'podcast_duree' =>$podcast_duree,
		'podcast_mp3' => $mp3_size,
		'podcast_ogg' => $ogg_size
	);
	$logs[] = sql_updateq("spip_articles", $emissionArray, "id_article=".$id_article,'','',false);
	sql_updateq("spip_articles", $emissionArray, "id_article=".$id_article);
	foreach ($chapitres as $chapitre) {
		$code_chapitre = $chapitre["short_chapter_name"];
		$chapitreArray = array(
			'titre' => $chapitre["chapter_title"],
			'code' => $code_chapitre,
			'id_article' => $id_article,
			'code_fichier' => $chapitre["short_chapter_name"],
			'code_podcast' => $code_emission,
			'debut' => $chapitre["start_timestamp"],
			'fin' => $chapitre["end_timestamp"],
			'type_sujet' => $chapitre["type"],
			'chronique' => $chapitre["chronique"],
			'mp3' => $chapitre["mp3_size"],
			'ogg' => $chapitre["ogg_size"]
		);
		$chapitreExistant = sql_select("id_chapitre","spip_chapitres",array("id_article=".$id_article, "code=".sql_quote($code_chapitre)));
		if ($chapitreExistant and sql_count($chapitreExistant)>0) {
			$r = sql_fetch($chapitreExistant);
			$id_chapitre = $r["id_chapitre"];
			$logs[] = sql_updateq("spip_chapitres", $chapitreArray, "id_chapitre=".$id_chapitre,'','',false);
			sql_updateq("spip_chapitres", $chapitreArray, "id_chapitre=".$id_chapitre);
		} else {
			$logs[] = sql_insertq("spip_chapitres", $chapitreArray, '', '', false);
			$id_nouveau_chapitre = sql_insertq("spip_chapitres", $chapitreArray);
		}
	}
	$texteReponse = "<p>Émission traitée : ". $code_emission." / ".$titre_emission."</p>";
	if (count($erreurs) > 0) {
		$texteReponse .= "<h2>Erreurs</h2>";
		$texteReponse .= "<ul>";
		foreach ($erreurs as $erreur) {
			$texteReponse .= "<li><p>".$erreur."</p></li>";
		}
		$texteReponse .= "</ul>";
	}
	if (count($logs) > 0) {
		$texteReponse .= "<h2>Requêtes effectuées</h2>";
		$texteReponse .= "<ul>";
		foreach ($logs as $log) {
			$texteReponse .= "<li><p>".$log."</p></li>";
		}
		$texteReponse .= "</ul>";
	}
	return $texteReponse;
}

function libreavous_import_getDuration($code_emission, $code_sujet) {
	$fileName = "libre-a-vous-".$code_emission;
	if ($code_sujet) {
		$fileName .= "-".$code_sujet;
	}
	$fileName .= ".ogg.duration";
	return libreavous_import_getMediaFileContent($code_emission, $fileName);
}

function libreavous_import_getSize($code_emission, $code_sujet, $extension) {
	$fileName = "libre-a-vous-".$code_emission;
	if ($code_sujet) {
		$fileName .= "-".$code_sujet;
	}
	$fileName .= ".".$extension.".size";
	return libreavous_import_getMediaFileContent($code_emission, $fileName);
}

function libreavous_import_getMediaFileContent($code, $fileName) {
	$url = "https://media.april.org/audio/radio-cause-commune/libre-a-vous/emissions/".$code."/".$fileName;
	$contents = file_get_contents($url);
	$resultat = trim($contents);
	if (strlen($resultat) == 0) {
		throw new Exception("Fichier manquant ou vide : ".$url);
	}
    return $resultat;
}

function libreavous_import_toSeconde($time) {
	$test = preg_match('/^(\d+):(\d+):(\d+)/', $time, $matches);
	if ($test !== false) {
		return ($matches[1] * 60 * 60) + ($matches[2] * 60) + ($matches[3]);
	} else {
		return false;
	}	
}

function libreavous_import_checkType($chapitre) {
	$code = $chapitre["short_chapter_name"];
	$result = array();
	if ($code == "annonces") {
		$result[] = "AN";
	} else {
		$idx = strpos($code, "chronique-");
		if ($idx === 0) {
			$result[] = "CH";
			$nom_chronique = substr($code, strlen("chronique-"));
			$result[] = $nom_chronique;
		} else {
			$result[] = "SC";
		}
	}
	return $result;
}