/*
 *  rhwebimport
 *
 *  Copyright (C) 2014-2016 Christian Pointner <equinox@helsinki.at>
 *  Copyright (C) 2015-2016 Peter Grassberger <petertheone@gmail.com>
 *
 *  This file is part of rhwebimport.
 *
 *  rhwebimport is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  any later version.
 *
 *  rhwebimport is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with rhwebimport. If not, see <http://www.gnu.org/licenses/>.
 */

'use strict';

var Rivendell = Rivendell || {};

Rivendell.Importer = function() {
  this.$el = $('#uploadModal');

  this.uploads = [];
};

Rivendell.Importer.prototype.resetModal = function() {
  $('div.modal-header h4', this.$el).text("Datei auswählen...");
  $('.modal-body', this.$el).empty().css("background-image", "url('/img/dz-backdrop.png')");
  $('#uploadModal-confirm', this.$el).attr('disabled','disabled').off('click');
};

Rivendell.Importer.prototype.openModal = function(group, groupView, createCart, newCartNumber, useMetadata) {
  createCart = typeof createCart === 'undefined' ? false : createCart;
  useMetadata = typeof useMetadata === 'undefined' ? false : useMetadata;

  this.resetModal();
  $('.modal-body', this.$el).append($('<form>'));

  var dropzone = new Dropzone('#uploadModal form', {
    url: '/rd-bin/rdxport.cgi',
    parallelUploads: 1,
    maxFilesize: 2048,
    paramName: 'FILENAME',
    uploadMultiple: false, // todo: maybe enable this?
    clickable: true,
    createImageThumbnails: false,
    acceptedFiles: '.flac,.wav,.ogg,.mp3',
    autoProcessQueue: false
  });

  this.$el.off('hide.bs.modal').on('hide.bs.modal', function() {
    dropzone.removeAllFiles(true);
    dropzone.disable();
    dropzone.destroy();
  });

  var self = this;
  dropzone.on('addedfile', function(file) {
    if (!Dropzone.isValidFile(file, dropzone.options.acceptedFiles)) {
      $('div.modal-header h4', self.$el).text('Nicht unterstützter Dateityp.');
      $('.modal-body', this.$el).css("background-image", "url('/img/dz-backdrop.png')");
      $('#uploadModal-confirm', this.$el).attr('disabled','disabled').off('click');
      return;
    }

    $('div.modal-header h4', self.$el).text(file.name);
    $('div.modal-body', self.$el).css("background-image", "url('/img/audio_file.png')");

    $('#uploadModal-confirm', self.$el).off('click').on('click', function() {
      var upload = new Rivendell.Upload(group, groupView, createCart, newCartNumber, useMetadata, dropzone);
      self.uploads.push(upload);

      self.$el.off('hide.bs.modal');
      self.$el.modal('hide');
    })
        .removeAttr('disabled').focus();
  });

  this.$el.modal({keyboard: true});
};

Rivendell.Importer.prototype.isUploading = function() {
  var $result = false;
  $.each(this.uploads, function(index, upload) {
    if (upload && upload.isUploading()) {
      $result = true;
    }
  });
  return $result;
};

Rivendell.Importer.prototype.cancelAllUploads = function() {
  $.each(this.uploads, function(index, upload){
    if (upload) {
      upload.cancel();
    }
  });
};

Rivendell.Importer.prototype.removeUpload = function(upload) {
  var self = this;
  $.each(this.uploads, function(index, currentUpload){
    if(currentUpload === upload) {
      self.uploads.splice(index, 1);
    }
  });
};

Rivendell.Upload = function(group, groupView, createCart, newCartNumber, useMetadata, dropzone) {
  this.group = group;
  this.groupView = groupView;
  this.createCart = createCart;
  this.newCartNumber = newCartNumber;
  this.useMetadata = useMetadata;
  this.dropzone = dropzone;

  this.cart = null;
  this.cut = null;

  this.import();
};

Rivendell.Upload.prototype.isUploading = function() {
  var files = this.dropzone.getUploadingFiles();
  return files.length > 0;
};

Rivendell.Upload.prototype.cancel = function() {
  this.dropzone.off(Dropzone.ERROR);
  this.dropzone.removeAllFiles(true);
  this.dropzone.disable();
  this.dropzone.destroy();

  var self = this;
  if (this.createCart && this.cart !== null) {
    rdxport.removeCart(this.cart.number, function() {
      self.group.fetchCarts();
    });
    this.cart = null;
  } else if (this.cart !== null && this.cut !== null) {
    rdxport.removeCut(this.cart.number, this.cut.number, function() {
      self.group.fetchCarts();
    });
    this.cut = null;
  }

  importer.removeUpload(this);
};

Rivendell.Upload.prototype.import = function() {
  var self = this;

  this.dropzone.off('uploadprogress').on('uploadprogress', function(file) {
    self.groupView.uploadProgress(self, file);
  });
  this.dropzone.off(Dropzone.SUCCESS).on(Dropzone.SUCCESS, function(file) {
    self.importFileUploadSuccess();
  });
  this.dropzone.off(Dropzone.ERROR).on(Dropzone.ERROR, function(file, msg, xhr) {
    self.importFileUploadError(file, msg, xhr);
  });
  // debug
  //self.importFileUploadError({cartNumber: 100000}, '<?xml version="1.0" encoding="UTF-8"?><woot><ResponseCode>123</ResponseCode><ErrorString>Fake error</ErrorString></woot>', null);

  this.addCart(function(file) {
    self.addCut(file);
  });
};

Rivendell.Upload.prototype.addCart = function(success) {
  var files = this.dropzone.getAcceptedFiles();
  var file = files[files.length - 1];

  var self = this;
  if (this.createCart) {
    rdxport.addCart(this.group.groupName, 'audio', this.newCartNumber, function(cartXML) {
      self.cart = new Rivendell.Cart(cartXML, self.group);
      success(file);
    }).fail(function() {
      //self.importFileUploadError(files[0], 'Failed to add Cart.');
    });
  } else {
    this.cart = this.group.carts[0];
    success(file);
  }
}

Rivendell.Upload.prototype.importFileUploadSuccess = function() {
  this.dropzone.off(Dropzone.ERROR);
  this.dropzone.removeAllFiles(true);
  this.dropzone.disable();
  this.dropzone.destroy();
  importer.removeUpload(this);

  this.group.fetchCarts();
};

Rivendell.Upload.prototype.importFileUploadError = function(file, msg, xhr) {
  var self = this;
  this.groupView.uploadError(this, file, msg, xhr, function() {
    self.cancel();
  });
};

Rivendell.Upload.prototype.addCut = function(file) {
  var self = this;

  rdxport.addAndEditCut(this.cart.number, {DESCRIPTION: file.name}, function(cutXml) {
    self.cut = new Rivendell.Cut(cutXml, self.cart);

    self.dropzone.on('sending', function(file, xhr, formData) {
      var cutNumber = $('cutNumber', cutXml).text();
      var cutNumberLeading = cutNumber;
      switch (cutNumber.toString().length) {
        case 0: cutNumberLeading = '000' + cutNumber; break;
        case 1: cutNumberLeading = '00' + cutNumber; break;
        case 2: cutNumberLeading = '0' + cutNumber; break;
        case 3: default: cutNumberLeading = cutNumber; break;
      }
      file.cartNumber = self.cart.number;
      file.cutNumber = cutNumberLeading;

      formData.append('COMMAND', 2);
      formData.append('LOGIN_NAME', auth_username);
      formData.append('PASSWORD', auth_token);
      formData.append('CART_NUMBER', self.cart.number);
      formData.append('CUT_NUMBER', cutNumber);
      formData.append('CHANNELS', 2);
      formData.append('NORMALIZATION_LEVEL', self.cart.normlevel);
      formData.append('AUTOTRIM_LEVEL', self.cart.trimlevel);
      formData.append('USE_METADATA', (self.useMetadata ? 1 : 0));
    });

    self.dropzone.processQueue();
    self.group.fetchCarts();

  });
};