<?php

  class mw_sources_waveforms extends mw_controller{

  /*
  
    des actions disponibles en ligne de commande pour génerer des waveforms
    si sox est executable sur le systeme via php
  
    ### action make
    ---------------
  
    php cli.php sources/waveforms/make from=http://domaine.archive.tld archive_root=/fs/path/to/archive/ id=<id_source>
  
  
    genere la waveforme de la source d'id <id_source>
  
    options :
  
      waveform_fg=RRVVBB couleur (notation hexa sans #) de la waveforme
  
      waveform_bg=RRVVBB couleur (notation hexa sans #) du fond (par defaut transparent)
  
  
    ### action make_all
    -------------------
  
    php cli.php sources/waveforms/make_all from=http://domaine.archive.tld archive_root=/fs/path/to/archive/


    genere toutes les waveformes
  
    options :
  
      update=1 force la generation même si une image existe deja
  
      waveform_fg=RRVVBB couleur (notation hexa sans #) de la waveforme
  
      waveform_bg=RRVVBB couleur (notation hexa sans #) du fond (par defaut transparent)
  
  */

    public function validate(){
      if(PHP_SAPI != "cli"){
        return "utilisation en ligne de commande uniquement";
      }
      return true;
    }

    public function make(){
      $env = $this->env();
      $data = $env->data();
      $id_source = $_GET[$env->param("id")];
      $base_url = $_GET[$env->param("from")];
      $document_root = $_GET[$env->param("archive_root")];
      $foreground = isset($_GET[$env->param("waveform_fg")]) ? $_GET[$env->param("waveform_fg")] : "383838";
      $background = isset($_GET[$env->param("waveform_bg")]) ? $_GET[$env->param("waveform_bg")] : null;
      if(!$data->init_waveform_dirs()){
        debug("impossible de creer les dossiers pour les waveforms");
        exit;
      }
      if(($source = $data->source($id_source, true)) === false){
        debug("impossible de lire les informations de la source");
        exit;
      }
      $audio_files = array();
      $no_files = array();
      if(isset($source["documents"])){
        $documents = array(
          "flac" => false,
          "wav" => false,
          "ogg" => false,
          "mp3" => false
        );
        $source_documents = $source["reference"] ? $source["reference"]["documents"] : $source["documents"];
        foreach($source_documents as $document){
          $file_name = false;
          if(substr(urldecode($document["url"]), 0, strlen($base_url)) == $base_url){
            $file_name = $document_root.substr(urldecode($document["url"]), strlen($base_url));
            if(!file_exists($file_name)){
              $file_name = false;
            }
          }
          if($file_name){
            if(strtolower(substr($document["url"], -5)) === ".flac"){
              $documents["flac"] = $file_name;
            }
            if(strtolower(substr($document["url"], -4)) === ".wav"){
              $documents["wav"] = $file_name;
            }
            if(strtolower(substr($document["url"], -4)) === ".ogg"){
              $documents["ogg"] = $file_name;
            }
            if(strtolower(substr($document["url"], -4)) === ".mp3"){
              $documents["mp3"] = $file_name;
            }
          }
        }
        if($documents["flac"]) $audio_files[$source["id"]] = $documents["flac"];
        elseif($documents["wav"]) $audio_files[$source["id"]] = $documents["wav"];
        elseif($documents["ogg"]) $audio_files[$source["id"]] = $documents["ogg"];
        elseif($documents["mp3"]) $audio_files[$source["id"]] = $documents["mp3"];
        else $no_files[$source["id"]] = $source["titre"];
      }
      foreach($audio_files as $id_source => $audio_file){
        if(
          !$data->audio_to_png(
            array(
              "audio_file" => $audio_file,
              "png_file" => $env->path("content")."waveforms/".$id_source.".png",
              "foreground" => "#".$foreground,
              "background" => $background ? "#".$background : ""
            )
          )
        ){
          if(!$data->sox_exists()){
            debug("impossible d'executer la commande sox sur le systeme");
          }
          else{
            debug("impossible de generer le png pour la source id ".$id_source);
          }
        }
      }
    }

    public function make_all(){
      $env = $this->env();
      $data = $env->data();
      $base_url = $_GET[$env->param("from")];
      $document_root = $_GET[$env->param("archive_root")];
      $UPDATE = isset($_GET[$env->param("update")]) ? $_GET[$env->param("update")] : false;
      $foreground = isset($_GET[$env->param("waveform_fg")]) ? $_GET[$env->param("waveform_fg")] : "383838";
      $background = isset($_GET[$env->param("waveform_bg")]) ? $_GET[$env->param("waveform_bg")] : null;
      if(!$data->init_waveform_dirs()){
        debug("impossible de creer les dossiers pour les waveforms");
        exit;
      }
      $sources = $data->sources(array());
      $audio_files = array();
      $no_files = array();
      foreach($sources["list"] as $source){
        $png_file = $env->path("content")."waveforms/".$source["id"].".png";
        if(file_exists($png_file) && !$UPDATE) continue;
        if(isset($source["documents"])){
          $documents = array(
            "flac" => false,
            "wav" => false,
            "ogg" => false,
            "mp3" => false
          );
          $source_documents = $source["reference"] ? $source["reference"]["documents"] : $source["documents"];
          foreach($source_documents as $document){
            $file_name = false;
            if(substr(urldecode($document["url"]), 0, strlen($base_url)) == $base_url){
              $file_name = $document_root.substr(urldecode($document["url"]), strlen($base_url));
              if(!file_exists($file_name)){
                $file_name = false;
              }
            }
            if($file_name){
              if(strtolower(substr($document["url"], -5)) === ".flac"){
                $documents["flac"] = $file_name;
              }
              if(strtolower(substr($document["url"], -4)) === ".wav"){
                $documents["wav"] = $file_name;
              }
              if(strtolower(substr($document["url"], -4)) === ".ogg"){
                $documents["ogg"] = $file_name;
              }
              if(strtolower(substr($document["url"], -4)) === ".mp3"){
                $documents["mp3"] = $file_name;
              }
            }
          }
          if($documents["flac"]) $audio_files[$source["id"]] = $documents["flac"];
          elseif($documents["wav"]) $audio_files[$source["id"]] = $documents["wav"];
          elseif($documents["ogg"]) $audio_files[$source["id"]] = $documents["ogg"];
          elseif($documents["mp3"]) $audio_files[$source["id"]] = $documents["mp3"];
          else $no_files[$source["id"]] = $source["titre"];
        }
      }
      foreach($audio_files as $id_source => $audio_file){
        if(
          !$data->audio_to_png(
            array(
              "audio_file" => $audio_file,
              "png_file" => $env->path("content")."waveforms/".$id_source.".png",
              "foreground" => "#".$foreground,
              "background" => $background ? "#".$background : ""
            )
          )
        ){
          if(!$data->sox_exists()){
            debug("impossible d'executer la commande sox sur le systeme");
          }
          else{
            debug("impossible de generer le png pour la source id ".$id_source);
          }
        }
      }
    }

  }