/* jshint onevar: false, smarttabs: true */
/* global sharing_loading_icon */

(function($) {
	$( document ).ready(function() {
		function enable_share_button() {
			$( '.preview a.sharing-anchor' ).unbind( 'mouseenter mouseenter' ).hover( function() {
				if ( $( this ).data( 'hasappeared' ) !== true ) {
					var item     = $( '.sharing-hidden .inner' );
					var original = $( this ).parents( 'li' );

					// Create a timer to make the area appear if the mouse hovers for a period
					var timer = setTimeout( function() {
						$( item ).css( {
							left: $( original ).position().left + 'px',
							top: $( original ).position().top + $( original ).height() + 3 + 'px'
						} ).slideDown( 200, function() {
							// Mark the item as have being appeared by the hover
							$( original ).data( 'hasappeared', true ).data( 'hasoriginal', true ).data( 'hasitem', false );

							// Remove all special handlers
							$( item ).mouseleave( handler_item_leave ).mouseenter( handler_item_enter );
							$( original ).mouseleave( handler_original_leave ).mouseenter( handler_original_enter );

							// Add a special handler to quickly close the item
							$( original ).click( close_it );
						} );

						// The following handlers take care of the mouseenter/mouseleave for the share button and the share area - if both are left then we close the share area
						var handler_item_leave = function() {
							$( original ).data( 'hasitem', false );

							if ( $( original ).data( 'hasoriginal' ) === false ) {
								var timer = setTimeout( close_it, 800 );
								$( original ).data( 'timer2', timer );
							}
						};

						var handler_item_enter = function() {
							$( original ).data( 'hasitem', true );
							clearTimeout( $( original ).data( 'timer2' ) );
						};

						var handler_original_leave = function() {
							$( original ).data( 'hasoriginal', false );

							if ( $( original ).data( 'hasitem' ) === false ) {
								var timer = setTimeout( close_it, 800 );
								$( original ).data( 'timer2', timer );
							}
						};

						var handler_original_enter = function() {
							$( original ).data( 'hasoriginal', true );
							clearTimeout( $( original ).data( 'timer2' ) );
						};

						var close_it = function() {
							item.slideUp( 200 );

							// Clear all hooks
							$( original ).unbind( 'mouseleave', handler_original_leave ).unbind( 'mouseenter', handler_original_enter );
							$( item ).unbind( 'mouseleave', handler_item_leave ).unbind( 'mouseenter', handler_item_leave );
							$( original ).data( 'hasappeared', false );
							$( original ).unbind( 'click', close_it );
							return false;
						};
					}, 200 );

					// Remember the timer so we can detect it on the mouseout
					$( this ).data( 'timer', timer );
				}
			}, function() {
				// Mouse out - remove any timer
				clearTimeout( $( this ).data( 'timer' ) );
				$( this ).data( 'timer', false );
			} );
		}

		function update_preview() {
			var button_style = $( '#button_style' ).val();

			// Clear the live preview
			$( '#live-preview ul.preview li' ).remove();

			// Add label
			if ( $( '#save-enabled-shares input[name=visible]' ).val() || $( '#save-enabled-shares input[name=hidden]' ).val() ) {
				$( '#live-preview ul.preview' ).append( $( '#live-preview ul.archive .sharing-label' ).clone() );
			}

			// Re-insert all the enabled items
			$( 'ul.services-enabled li' ).each( function() {
				if ( $( this ).hasClass( 'service' ) ) {
					var service = $( this ).attr( 'id' );
					$( '#live-preview ul.preview' ).append( $( '#live-preview ul.archive li.preview-' + service ).clone() );
				}
			} );

			// Add any hidden items
			if ( $( '#save-enabled-shares input[name=hidden]' ).val() ) {
				// Add share button
				$( '#live-preview ul.preview' ).append( $( '#live-preview ul.archive .share-more' ).parent().clone() );

				$( '.sharing-hidden ul li' ).remove();

				// Add hidden items into the inner panel
				$( 'ul.services-hidden li' ).each( function( /*pos, item*/ ) {
					if ( $( this ).hasClass( 'service' ) ) {
						var service = $( this ).attr( 'id' );
						$( '.sharing-hidden .inner ul' ).append( $( '#live-preview ul.archive .preview-' + service ).clone() );
					}
				} );

				enable_share_button();
			}

			$( '#live-preview div.sharedaddy' ).removeClass( 'sd-social-icon' );
			$( '#live-preview li.advanced' ).removeClass( 'no-icon' );

			// Button style
			if ( 'icon' === button_style ) {
				$( '#live-preview ul.preview div span' ).html( '&nbsp;' ).parent().addClass( 'no-text' ); // Remove text label
				$( '#live-preview div.sharedaddy' ).addClass( 'sd-social-icon' );
			} else if ( 'official' === button_style ) {
				$( '#live-preview ul.preview .advanced' ).each( function( /*i*/ ) {
					if ( !$( this ).hasClass( 'preview-press-this' ) && !$( this ).hasClass( 'preview-email' ) && !$( this ).hasClass( 'preview-print' ) && !$( this ).hasClass( 'share-custom' ) ) {
						$( this ).find( '.option a span' ).html( '' ).parent().removeClass( 'sd-button' ).parent().attr( 'class', 'option option-smart-on' );
					}
				} );
			} else if ( 'text' === button_style ) {
				$( '#live-preview li.advanced' ).addClass( 'no-icon' );
			}

		}

		window.sharing_option_changed = function() {
			var item = this;

			// Loading icon
			$( this ).parents( 'li:first' ).css( 'backgroundImage', 'url("' + sharing_loading_icon + '")' );

			// Save
			$( this ).parents( 'form' ).ajaxSubmit( function( response ) {
				if ( response.indexOf( '<!---' ) >= 0 ) {
					var button = response.substring( 0, response.indexOf( '<!--->' ) );
					var preview = response.substring( response.indexOf( '<!--->' ) + 6 );

					if ( $( item ).is( ':submit' ) === true ) {
						// Update the DOM using a bit of cut/paste technology

						$( item ).parents( 'li:first' ).replaceWith( button );
					}

					$( '#live-preview ul.archive li.preview-' + $( item ).parents( 'form' ).find( 'input[name=service]' ).val() ).replaceWith( preview );
				}

				// Update preview
				update_preview();

				// Restore the icon
				$( item ).parents( 'li:first' ).removeAttr( 'style' );
			} );

			if ( $( item ).is( ':submit' ) === true ) {
				return false;
			}
			return true;
		};

		function showExtraOptions( service ) {
			jQuery( '.' + service + '-extra-options' ).css( { backgroundColor: '#ffffcc' } ).fadeIn();
		}

		function hideExtraOptions( service ) {
			jQuery( '.' + service + '-extra-options' ).fadeOut( 'slow' );
		}

		function save_services() {
			$( '#enabled-services h3 img' ).show();

			// Toggle various dividers/help texts
			if ( $( '#enabled-services ul.services-enabled li.service' ).length > 0 ) {
				$( '#drag-instructions' ).hide();
			}
			else {
				$( '#drag-instructions' ).show();
			}

			if ( $( '#enabled-services li.service' ).length > 0 ) {
				$( '#live-preview .services h2' ).hide();
			}
			else {
				$( '#live-preview .services h2' ).show();
			}

			// Gather the modules
			var visible = [], hidden = [];

			$( 'ul.services-enabled li' ).each( function() {
				if ( $( this ).hasClass( 'service' ) ) {
					// Ready for saving
					visible[visible.length] = $( this ).attr( 'id' );
					showExtraOptions( $( this ).attr( 'id' ) );
				}
			} );

			$( 'ul.services-available li' ).each( function() {
				if ( $( this ).hasClass( 'service' ) ) {
					hideExtraOptions( $( this ).attr( 'id' ) );
				}
			} );

			$( 'ul.services-hidden li' ).each( function() {
				if ( $( this ).hasClass( 'service' ) ) {
					// Ready for saving
					hidden[hidden.length] = $( this ).attr( 'id' );
					showExtraOptions( $( this ).attr( 'id' ) );
				}
			} );

			// Set the hidden element values
			$( '#save-enabled-shares input[name=visible]' ).val( visible.join( ',' ) );
			$( '#save-enabled-shares input[name=hidden]' ).val( hidden.join( ',' ) );

			update_preview();

			// Save it
			$( '#save-enabled-shares' ).ajaxSubmit( function() {
				$( '#enabled-services h3 img' ).hide();
			} );
		}

		$( '#enabled-services .services ul' ).sortable( {
			receive: function( /*event, ui*/ ) {
				save_services();
			},
			stop: function() {
				save_services();
				$( 'li.service' ).enableSelection();   // Fixes a problem with Chrome
			},
			over: function( /*event, ui*/ ) {
				$( this ).find( 'ul' ).addClass( 'dropping' );

				// Ensure the 'end-fix' is at the end
				$( '#enabled-services li.end-fix' ).remove();
				$( '#enabled-services ul' ).append( '<li class="end-fix"></li>' );
			},
			out: function( /*event, ui*/ ) {
				$( this ).find( 'ul' ).removeClass( 'dropping' );

				// Ensure the 'end-fix' is at the end
				$( '#enabled-services li.end-fix' ).remove();
				$( '#enabled-services ul' ).append( '<li class="end-fix"></li>' );
			},
			helper: function( event, ui ) {
				ui.find( '.advanced-form' ).hide();

				return ui.clone();
			},
			start: function( /*event, ui*/ ) {
				// Make sure that the advanced section is closed
				$( '.advanced-form' ).hide();
				$( 'li.service' ).disableSelection();   // Fixes a problem with Chrome
			},
			placeholder: 'dropzone',
			opacity: 0.8,
			delay: 150,
			forcePlaceholderSize: true,
			items: 'li',
			connectWith: '#available-services ul, #enabled-services .services ul',
			cancel: '.advanced-form'
		} );

		$( '#available-services ul' ).sortable( {
			opacity: 0.8,
			delay: 150,
			cursor: 'move',
			connectWith: '#enabled-services .services ul',
			placeholder: 'dropzone',
			forcePlaceholderSize: true,
			start: function() {
				$( '.advanced-form' ).hide();
			}
		} );

		// Accessibility keyboard shortcurts
		$( '.service' ).on( 'keydown', function ( e ) {

			// Reposition if one of the directional keys is pressed
		    switch ( e.keyCode ) {
		        case 13: keyboardDragDrop( $( this ) ); break; // Enter
		        case 32: keyboardDragDrop( $( this ) ); break; // Space
		        case 37: keyboardChangeOrder( $( this ), 'left' ); break; // Left
		        case 39: keyboardChangeOrder( $( this ), 'right' ); break; // Right
		        default: return true; // Exit and bubble
		    }

		    e.preventDefault();
		});

		function keyboardChangeOrder( $this, dir ) {

			var thisParent = $this.parent(),
				thisParentsChildren = thisParent.find( 'li' ),
				thisPosition = thisParentsChildren.index( $this ) + 1,
				totalChildren = thisParentsChildren.length - 1,
				thisService;

			// No need to be able to sort order for the "Available Services" section
			if ( thisParent.hasClass( 'services-available' ) ) {
				return;
			}

			if ( 'left' === dir ) {
				if ( 1 === thisPosition ) {
					return;
				}

				// Find service to left
				var prevSibling = $this.prev();

				// Detach this service from DOM
				thisService = $this.detach();

				// Move it to the appropriate area and add focus back to service
				prevSibling.before( thisService );

				// Add focus
				prevSibling.prev().focus();
			}

			if ( 'right' === dir ) {
				if ( thisPosition === totalChildren ) {
					return;
				}

				// Find service to left
				var nextSibling = $this.next();

				// Detach this service from DOM
				thisService = $this.detach();

				// Move it to the appropriate area and add focus back to service
				nextSibling.after( thisService );

				// Add focus
				nextSibling.next().focus();
			}
			
			//Save changes
			save_services();
		}

		function keyboardDragDrop( $this ) {

			var dropzone,
				thisParent = $this.parent();

			// Rotate through 3 available dropzones
			if ( thisParent.hasClass( 'services-available' ) ) {
				dropzone = 'services-enabled';
			} else if ( thisParent.hasClass( 'services-enabled' ) ) {
				dropzone = 'services-hidden';
			} else {
				dropzone = 'services-available';
			}

			// Detach this service from DOM
			var thisService = $this.detach();

			// Move it to the appropriate area and add focus back to service
			$( '.' + dropzone ).prepend( thisService ).find( 'li:first-child' ).focus();
			
			//Save changes
			save_services();
		}

		// Live preview 'hidden' button
		$( '.preview-hidden a' ).click( function() {
			$( this ).parent().find( '.preview' ).toggle();
			return false;
		} );

		// Add service
		$( '#new-service form' ).ajaxForm( {
				beforeSubmit: function() {
					$( '#new-service-form .error' ).hide();
					$( '#new-service-form img' ).show();
					$( '#new-service-form input[type=submit]' ).prop( 'disabled', true );
				},
				success: function( response ) {
					$( '#new-service-form img' ).hide();

					if ( ( '' + response ) === '1' ) {
						$( '#new-service-form .inerror' ).removeClass( 'inerror' ).addClass( 'error' );
						$( '#new-service-form .error' ).show();
						$( '#new-service-form input[type=submit]' ).prop( 'disabled', false );
					}
					else {
						document.location = document.location.href.replace( /&create_new_service=true/i, '' );
					}
				}
			}
		);

		function init_handlers() {
			$( '#services-config a.remove' ).unbind( 'click' ).click( function() {
				var form = $( this ).parent().next();

				// Loading icon
				$( this ).parents( 'li:first' ).css( 'backgroundImage', 'url("' + sharing_loading_icon + '")' );

				// Save
				form.ajaxSubmit( function( /*response*/ ) {
					// Remove the item
					form.parents( 'li:first' ).fadeOut( function() {
						$( this ).remove();

						// Update preview
						update_preview();
					} );
				} );

				return false;
			} );
		}

		$( '#button_style' ).change( function() {
			update_preview();
			return true;
		} ).change();

		$( 'input[name=sharing_label]' ).blur( function() {
			$('#live-preview h3.sd-title').text( $( '<div/>' ).text( $( this ).val() ).html() );
		} );

		init_handlers();
		enable_share_button();
	} );
})( jQuery );
