var PerformEditsDialog = {};

PerformEditsDialog.launch = function(logged_in_username, max_severity) {
  var self = this;
  var elmts = this._elmts;
  var frame = this.frame;

  if (this.missingSchema) {
    return;
  }

  this._level = DialogSystem.showDialog(frame);

  this._elmts.dialogHeader.text($.i18n('perform-wikidata-edits/dialog-header'));
  this._elmts.loggedInAs.text($.i18n('perform-wikidata-edits/logged-in-as'));
  this._elmts.editSummaryLabel.text($.i18n('perform-wikidata-edits/edit-summary-label'));
  this._elmts.editSummary.attr('placeholder', $.i18n('perform-wikidata-edits/edit-summary-placeholder'));
  this._elmts.performEditsButton.text($.i18n('perform-wikidata-edits/perform-edits'));
  this._elmts.cancelButton.text($.i18n('perform-wikidata-edits/cancel'));

  var dismiss = function() {
    DialogSystem.dismissUntil(self._level - 1);
  };

  elmts.loggedInUsername
   .text(logged_in_username)
   .attr('href','https://www.wikidata.org/wiki/User:'+logged_in_username);
  
  frame.find('.cancel-button').click(function() {
     dismiss();
  });

  var hiddenIframe = $('#hiddenIframe').contents();

  if (max_severity === 'CRITICAL') {
      elmts.performEditsButton.prop("disabled",true).addClass("button-disabled");
  } else {
    elmts.performEditsButton.click(function() {
        hiddenIframe.find('body').append(
                elmts.performEditsForm.clone());
        var formCopy = hiddenIframe.find("#wikibase-perform-edits-form");
        formCopy.submit();

        if(elmts.editSummary.val().length == 0) {
            elmts.editSummary.focus();
        } else {
            Refine.postProcess(
            "wikidata",
            "perform-wikibase-edits",
            {},
            {
                summary: elmts.editSummary.val(),
            },
            { includeEngine: true, cellsChanged: true, columnStatsChanged: true },
            { onDone:
                function() {
                dismiss();
                }
            });
        }
        event.preventDefault();
    });
  }
};

PerformEditsDialog.updateEditCount = function(edit_count) {
  this._elmts.reviewYourEdits.html(
        $.i18n('perform-wikidata-edits/review-your-edits')
                .replace('{nb_edits}', edit_count));
}

PerformEditsDialog._updateWarnings = function(data) {
   var warnings = data.warnings;
   var mainDiv = this._elmts.warningsArea;

   // clear everything
   mainDiv.empty();
   PerformEditsDialog.updateEditCount(data.edit_count);

   var table = $('<table></table>').appendTo(mainDiv);
   for (var i = 0; i != warnings.length; i++) {
      var rendered = WarningsRenderer._renderWarning(warnings[i]);
      rendered.appendTo(table);
   }   
}

PerformEditsDialog.checkAndLaunch = function () {
  var self = this;
  this.frame = $(DOM.loadHTML("wikidata", "scripts/dialogs/perform-edits-dialog.html"));
  this._elmts = DOM.bind(this.frame);
  this.missingSchema = false;

  var onSaved = function() {
    ManageAccountDialog.ensureLoggedIn(function(logged_in_username) {
        if (logged_in_username) {
                var discardWaiter = DialogSystem.showBusy($.i18n('perform-wikidata-edits/analyzing-edits'));
                $.post(
                    "command/wikidata/preview-wikibase-schema?" + $.param({ project: theProject.id }),
                    { engine: JSON.stringify(ui.browsingEngine.getJSON()) },
                    function(data) {
                    discardWaiter();
                    if(data['code'] != 'error') {
                        PerformEditsDialog._updateWarnings(data);
                        PerformEditsDialog.launch(logged_in_username, data['max_severity']);
                    } else {
                        SchemaAlignmentDialog.launch(
                            PerformEditsDialog.checkAndLaunch);
                    }
                    },
                    "json"
                );
        }
    });
  };


  if (SchemaAlignmentDialog.isSetUp() && SchemaAlignmentDialog._hasUnsavedChanges) {
     SchemaAlignmentDialog._save(onSaved);
  } else {
     onSaved();
  }

};