/**
 * File: CMSMain.EditForm.js
 */
import $ from 'jquery';
import i18n from 'i18n';

$.entwine('ss', function($){
	/**
	 * Class: .cms-edit-form :input[name=ClassName]
	 * Alert the user on change of page-type. This might have implications
	 * on the available form fields etc.
	 */
	$('.cms-edit-form :input[name=ClassName]').entwine({
		// Function: onchange
		onchange: function() {
			alert(i18n._t('CMS.ALERTCLASSNAME'));
		}
	});

	/**
	 * Class: .cms-edit-form input[name=Title]
	 *
	 * Input validation on the Title field
	 */
	$('.cms-edit-form input[name=Title]').entwine({
		// Constructor: onmatch
		onmatch : function() {
			var self = this;

			self.data('OrigVal', self.val());

			var form = self.closest('form');
			var urlSegmentInput = $('input:text[name=URLSegment]', form);
			var liveLinkInput = $('input[name=LiveLink]', form);

			if (urlSegmentInput.length > 0) {
				self._addActions();
				this.bind('change', function(e) {
					var origTitle = self.data('OrigVal');
					var title = self.val();
					self.data('OrigVal', title);

					// Criteria for defining a "new" page
					if (
						urlSegmentInput.val().indexOf(urlSegmentInput.data('defaultUrl')) === 0
						&& liveLinkInput.val() == ''
					) {
						self.updateURLSegment(title);
					} else {
						$('.update', self.parent())
							.show()
							.parent('.form__field-holder')
							.addClass('input-group');
					}

					self.updateRelatedFields(title, origTitle);
					self.updateBreadcrumbLabel(title);
				});
			}

			this._super();
		},
		onunmatch: function() {
			this._super();
		},

		/**
		 * Function: updateRelatedFields
		 *
		 * Update the related fields if appropriate
		 * (String) title The new title
		 * (Stirng) origTitle The original title
		 */
		updateRelatedFields: function(title, origTitle) {
			// Update these fields only if their value was originally the same as the title
			this.parents('form').find('input[name=MetaTitle], input[name=MenuTitle]').each(function() {
				var $this = $(this);
				if($this.val() == origTitle) {
					$this.val(title);
					// Onchange bubbling didn't work in IE8, so .trigger('change') couldn't be used
					if($this.updatedRelatedFields) $this.updatedRelatedFields();
				}
			});
		},

		/**
		 * Function: updateURLSegment
		 *
		 * Update the URLSegment
		 * (String) title
		 */
		updateURLSegment: function(title) {
			var urlSegmentInput = $('input:text[name=URLSegment]', this.closest('form'));
			var urlSegmentField = urlSegmentInput.closest('.field.urlsegment');
			var updateURLFromTitle = $('.update', this.parent());
			urlSegmentField.update(title);
			if (updateURLFromTitle.is(':visible')) {
				updateURLFromTitle
					.hide()
					.parent('.form__field-holder')
					.removeClass('input-group');
			}
		},

		/**
		 * Function: updateBreadcrumbLabel
		 *
		 * Update the breadcrumb
		 * (String) title
		 */
		updateBreadcrumbLabel: function(title) {
			var pageID = $('.cms-edit-form input[name=ID]').val();
			var panelCrumb = $('span.cms-panel-link.crumb');
			if (title && title != "") {
				panelCrumb.text(title);
			}
		},

		/**
		 * Function: _addActions
		 *
		 * Utility to add update from title action
		 *
		 */
		_addActions: function() {
			var self = this;
			var	updateURLFromTitle;

			// update button
			updateURLFromTitle = $('<button />', {
				'class': 'update btn btn-outline-secondary form__field-update-url',
				'text': i18n._t('CMS.UpdateURL'),
				'type': 'button',
				'click': function(e) {
					e.preventDefault();
					self.updateURLSegment(self.val());
				}
			});

			// insert elements
			updateURLFromTitle.insertAfter(self);
			updateURLFromTitle.hide();
		}
	});

	/**
	 * Class: .cms-edit-form .parentTypeSelector
	 *
	 * ParentID field combination - mostly toggling between
	 * the two radiobuttons and setting the hidden "ParentID" field
	 */
	$('.cms-edit-form .parentTypeSelector').entwine({
		// Constructor: onmatch
		onmatch : function() {
			var self = this;
			this.find(':input[name=ParentType]').bind('click', function(e) {self._toggleSelection(e);});
			this.find('.TreeDropdownField').bind('change', function(e) {self._changeParentId(e);});

			this._changeParentId();
			this._toggleSelection();

			this._super();
		},
		onunmatch: function() {
			this._super();
		},

		/**
		 * Function: _toggleSelection
		 *
		 * Parameters:
		 *  (Event) e
		 */
		_toggleSelection: function(e) {
			var selected = this.find(':input[name=ParentType]:checked').val(),
				holder = this.find('#Form_EditForm_ParentID_Holder');
			// reset parent id if 'root' radiobutton is selected
			if(selected == 'root') this.find(':input[name=ParentID]').val(0);
			// otherwise use the old value
			else this.find(':input[name=ParentID]').val(this.find('#Form_EditForm_ParentType_subpage').data('parentIdValue'));
			// toggle tree dropdown based on selection
			if(selected != 'root') {
				holder.slideDown(400, function() {
					$(this).css('overflow', 'visible');
				});
			} else {
				holder.slideUp();
			}
		},

		/**
		 * Function: _changeParentId
		 *
		 * Parameters:
		 *  (Event) e
		 */
		_changeParentId: function(e) {
			var value = this.find(':input[name=ParentID]').val();
			// set a data attribute so we know what to use in _toggleSelection
			this.find('#Form_EditForm_ParentType_subpage').data('parentIdValue', value);
		}
	});

  /**
   * Class: .cms-edit-form .btn-toolbar #Form_EditForm_action_rollback
   *
   * A "rollback" to a specific version needs user confirmation.
   */
  $('.cms-edit-form .btn-toolbar #Form_EditForm_action_doRollback, .cms-edit-form .btn-toolbar #Form_EditForm_action_rollback').entwine({

    /**
     * Function: onclick
     *
     * Parameters:
     *  (Event) e
     */
    onclick: function(e) {
      // Skip if disabled
      if (this.is(':disabled')) {
        e.preventDefault();
        return false;
      }

      // Check if a version is selected
      const version = this
        .parents('form:first')
        .find(':input[name=Version]')
        .val();

      // Assign message based on version
      const message = version
        ? i18n.sprintf(
            i18n._t(
              'CMS.RollbackToVersion',
              'Do you really want to roll back to version #%s of this page?'
            ),
            version
        )
        : i18n._t(
          'CMS.ConfirmRestoreFromLive',
          'Are you sure you want to revert draft to when the page was last published?'
        );

      // Skip if cancelled
      if(!confirm(message)) {
        e.preventDefault();
        return false;
      }

      // Add a loading indicator and continue
      this.parents('form:first').addClass('loading');
      return this._super(e);
    }
  });

	/**
	 * Class: .cms-edit-form .btn-toolbar #Form_EditForm_action_archive
	 *
	 * Informing the user about the archive action while requiring confirmation
	 */
	$('.cms-edit-form .btn-toolbar #Form_EditForm_action_archive').entwine({

		/**
		 * Function: onclick
		 *
		 * Parameters:
		 *  (Event) e
		 */
		onclick: function(e) {
			var form = this.parents('form:first'), message = '';
			message = form.find('input[name=ArchiveWarningMessage]')
				.val()
				.replace(/\\n/g, '\n');

			if(confirm(message)) {
        // Add a loading indicator and continue
        this.parents('form:first').addClass('loading');
				return this._super(e);
			}
      return false;
		}
	});

	/**
	 * Class: .cms-edit-form .btn-toolbar #Form_EditForm_action_restore
	 *
	 * Informing the user about the archive action while requiring confirmation
	 */
	$('.cms-edit-form .btn-toolbar #Form_EditForm_action_restore').entwine({

		/**
		 * Function: onclick
		 *
		 * Parameters:
		 *  (Event) e
		 */
		onclick: function(e) {
			var form = this.parents('form:first'),
				version = form.find(':input[name=Version]').val(),
				message = '',
				toRoot = this.data('toRoot');
			message = i18n.sprintf(
				i18n._t(toRoot ? 'CMS.RestoreToRoot' : 'CMS.Restore'),
				version
			);
			if(confirm(message)) {
        // Add a loading indicator and continue
        this.parents('form:first').addClass('loading');
				return this._super(e);
			}
			return false;
		}
	});

	/**
	 * Class: .cms-edit-form .btn-toolbar #Form_EditForm_action_unpublish
	 * Informing the user about the unpublish action while requiring confirmation
	 */
	$('.cms-edit-form .btn-toolbar #Form_EditForm_action_unpublish').entwine({

		/**
		 * Function: onclick
		 *
		 * Parameters:
		 *  (Event) e
		 */
		onclick: function(e) {
			var form = this.parents('form:first'), version = form.find(':input[name=Version]').val(), message = '';
			message = i18n.sprintf(
				i18n._t('CMS.Unpublish'),
				version
			);
			if(confirm(message)) {
        // Add a loading indicator and continue
        this.parents('form:first').addClass('loading');
				return this._super(e);
			}
			return false;
		}
	});

	/**
	 * Enable save buttons upon detecting changes to content.
	 * "changed" class is added by jQuery.changetracker.
	 */
  $('.cms-edit-form.changed').entwine({
    onmatch: function(e) {
      // Update all buttons with alternate text
      this.find('button[data-text-alternate]').each(function() {
        const button = $(this);
        const buttonTitle = button.find('.btn__title');

        // Set alternate-text
        const alternateText = button.data('textAlternate');
        if (alternateText) {
          button.data('textStandard', buttonTitle.text());
          buttonTitle.text(alternateText);
        }

        // Extra classes can be declared explicitly (legacy)
        const alternateClasses = button.data('btnAlternate');
        if (alternateClasses) {
          button.data('btnStandard', button.attr('class'));
          button.attr('class', alternateClasses);
          button
            .removeClass('btn-outline-secondary')
            .addClass('btn-primary');
        }

        // Extra classes can also be specified as add / remove
        const alternateClassesAdd = button.data('btnAlternateAdd');
        if (alternateClassesAdd) {
          button.addClass(alternateClassesAdd);
        }
        const alternateClassesRemove = button.data('btnAlternateRemove');
        if (alternateClassesRemove) {
          button.removeClass(alternateClassesRemove);
        }
      });

			this._super(e);
		},
		onunmatch: function(e) {
      this.find('button[data-text-alternate]').each(function() {
        const button = $(this);
        const buttonTitle = button.find('.btn__title');

        // Revert extra classes
        const standardText = button.data('textStandard');
        if (standardText) {
          buttonTitle.text(standardText);
        }

        // Extra classes can be declared explicitly (legacy)
        const standardClasses = button.data('btnStandard');
        if (standardClasses) {
          button.attr('class', standardClasses);
          button
            .addClass('btn-outline-secondary')
            .removeClass('btn-primary');
        }

        // Extra classes can also be specified as add / remove
        // Note: Reverse of onMatch
        const alternateClassesAdd = button.data('btnAlternateAdd');
        if (alternateClassesAdd) {
          button.removeClass(alternateClassesAdd);
        }
        const alternateClassesRemove = button.data('btnAlternateRemove');
        if (alternateClassesRemove) {
          button.addClass(alternateClassesRemove);
        }
      });

			this._super(e);
		}
	});

	$('.cms-edit-form .btn-toolbar button[name=action_publish]').entwine({
		/**
		 * Bind to ssui.button event to trigger stylistic changes.
		 */
		onbuttonafterrefreshalternate: function() {
			if (this.data('showingAlternate')) {
				this.addClass('btn-primary');
        this.removeClass('btn-secondary');
			}
			else {
				this.removeClass('btn-primary');
        this.addClass('btn-secondary');
			}
		}
	});

	$('.cms-edit-form .btn-toolbar button[name=action_save]').entwine({
		/**
		 * Bind to ssui.button event to trigger stylistic changes.
		 */
		onbuttonafterrefreshalternate: function() {
			if (this.data('showingAlternate')) {
				this.addClass('btn-primary');
        this.removeClass('btn-secondary');
			}
			else {
				this.removeClass('btn-primary');
        this.addClass('btn-secondary');
			}
		}
	});

	/**
	 * Class: .cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked
	 *
	 * Showing the "Page location" "Parent page" chooser only when the "Sub-page underneath a parent page"
	 * radio button is selected
	 */
	$('.cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked').entwine({
		onmatch: function() {
			this.redraw();
			this._super();
		},
		onunmatch: function() {
			this._super();
		},
		redraw: function() {
			var treeField = $('.cms-edit-form.CMSPageSettingsController #Form_EditForm_ParentID_Holder');
			if ($(this).attr('id') == 'Form_EditForm_ParentType_root') treeField.slideUp();
			else treeField.slideDown();
		},
		onclick: function() {
			this.redraw();
		}
	});

	//trigger an initial change event to do the initial hiding of the element, if necessary
	if ($('.cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked').attr('id') == 'Form_EditForm_ParentType_root') {
		$('.cms-edit-form.CMSPageSettingsController #Form_EditForm_ParentID_Holder').hide(); //quick hide on first run
	}
});