//= require fileupload/tmpl
//= require fileupload/jquery.fileupload.js
//= require fileupload/jquery.fileupload-ui.js
//= require fileupload/jquery.fileupload-process.js
//= require fileupload/jquery.fileupload-validate.js
//= require fileupload/locale.js
//
/*jslint nomen: true */
/*global $ */


//200 MB  max file size
var max_file_size = 200000000;
var max_file_size_str = "200 MB";
//500 MB max total upload size
var max_total_file_size = 500000000;
var max_file_count = 100;
var max_total_file_size_str = "500 MB";
var first_file_after_max = '';
var filestoupload =0;

(function( $ ){
  'use strict';

  $.fn.curationConcernsUploader = function( options ) {

    // Create some defaults, extending them with any options that were provided
    // option afterSubmit: function(form, event, data)
    var settings = $.extend( { }, options);
    var files_done =0;
    var error_string ='';
    $("#fail").hide();
    $("#partial_fail").hide();
    $("#errmsg").hide();

    function uploadStopped() {
      if (files_done == filestoupload && (files_done >0)){
         var loc = $("#redirect-loc").html()
         $(location).attr('href',loc);
      } else if (error_string.length > 0){
        // an error occured
         if (files_done == 0) {
            $("#fail").show()
         } else {
            $("#partial_fail").show()
         }
         $("#errmsg").html(error_string);
         $("#errmsg").show();
      }
    }

    function uploadAdd(e, data) {
      filestoupload++;
      if ( $('#terms_of_service').is(':checked') )
        $('#main_upload_start').attr('disabled', false);
    }

    function uploadAdded(e, data) {
      if (data.files[0].error == 'acceptFileTypes'){
        $($('#fileupload .files .cancel button')[data.context[0].rowIndex]).click();
      }
      var total_sz = parseInt($('#total_upload_size').val()) + data.files[0].size;
      $('#total_upload_size').val( total_sz );
      // is file size too big
      if (data.files[0].size > max_file_size) {
        $($('#fileupload .files .cancel button')[data.context[0].rowIndex]).click();
        $("#errmsg").html(data.files[0].name + " is too big. No files over " + max_file_size_str + " can be uploaded.");
        $("#errmsg").fadeIn('slow');
      }
      // cumulative upload file size is too big
      else if( total_sz > max_total_file_size) {
        if (first_file_after_max == '') first_file_after_max = data.files[0].name;
        $($('#fileupload .files .cancel button')[data.context[0].rowIndex]).click(); 
        // artificially bump size to max so small files don't sneak in out of order.
        $('#total_upload_size').val( max_total_file_size );
        $("#errmsg").html("All files selected from " + first_file_after_max + " and after will not be uploaded because your total upload is too big. You may not upload more than " + max_total_file_size_str + " in one upload.");
        $("#errmsg").fadeIn('slow');
      }
      else if( filestoupload > max_file_count) {
        if (first_file_after_max == '') first_file_after_max = data.files[0].name;
        $($('#fileupload .files .cancel button')[data.context[0].rowIndex]).click();
        $("#errmsg").html("All files selected from " + first_file_after_max + " and after will not be uploaded because your total number of files is too big. You may not upload more than " + max_file_count + " files in one upload.");
        $("#errmsg").fadeIn('slow');
      }
    }


    function uploadDone(e, data) {
      var file = ($.isArray(data.result) && data.result[0]) || {error: 'emptyResult'};
      if (!file.error) {
        files_done++;
      } else {
        if (error_string.length > 0) {
          error_string += '<br/>';
        }
        error_string += file.error;
      }
    }

    // Takes the contextual values in the file you're uploading
    // and assign them to a value in the form that is being uploaded:
    // based off of https://github.com/blueimp/jQuery-File-Upload/wiki/How-to-submit-additional-Form-Data
    function uploadSubmit(e, data) {
      $('#relative_path').val(data.files[0].webkitRelativePath)
      if (settings.afterSubmit) {
        settings.afterSubmit(this, e, data)
      }
    }

    function uploadFail(e, data) {
      if (data.errorThrown == 'abort') {
         filestoupload--;
         if ((files_done == filestoupload)&&(files_done >0)){
             var loc = $("#redirect-loc").html()+"?file_count="+filestoupload
             $(location).attr('href',loc);
         }
         $('#total_upload_size').val( parseInt($('#total_upload_size').val()) - data.files[0].size );

      } else {
       if (error_string.length > 0) {
          error_string += '<br/>';
       }
          var responseJSON = data.jqXHR.responseJSON;
          if (data.jqXHR.status == 422) {
              var error_message = responseJSON.message + ": " + responseJSON.errors.files;
              data.errorThrown = error_message;
              error_string += error_message;
          } else {
              if (responseJSON.message) {
                  data.errorThrown = responseJSON.message;
                  error_string += responseJSON.message;
              } else {
                  error_string += data.errorThrown + ": " + data.textStatus;
              }

          }

      }
    }

    var $container = this;
    return this.each(function() {
      // Initialize the jQuery File Upload widget:
      $(this).fileupload();

      // Enable iframe cross-domain access via redirect option:
      $('#fileupload').fileupload(
          'option',
          'redirect',
          window.location.href.replace(
              /\/[^\/]*$/,
              '/cors/result.html?%s'
          )
      );

      $('#fileupload').fileupload(
          'option',
          'acceptFileTypes',
          /^[^\.].*$/i
      );

      $('#fileupload').bind("fileuploadstop", uploadStopped);

      // count the number of uploaded files to send to edit
      $('#fileupload').bind("fileuploadadd", uploadAdd);


      // check the validation on if the file type is not accepted just click cancel for the user as we do not want them to see all the hidden files
      $('#fileupload').bind("fileuploadadded", uploadAdded);

      // count the number of files completed and ready to send to edit
      $('#fileupload').bind("fileuploaddone", uploadDone);

      $('#fileupload').bind('fileuploadsubmit', uploadSubmit);


      // on fail if abort (aka cancel) decrease the number of uploaded files to send
      $('#fileupload').bind("fileuploadfail", uploadFail);

    });

  };
})( jQuery );