/* global jQuery, soWidgets */

( function( $ ) {

	const setupMediaField = function( e ) {
		const $field = $( this );
		const $media = $field.find( '> .media-field-wrapper' );
		const $inputField = $field.find( '.siteorigin-widget-input' ).not( '.media-fallback-external' );
		const $externalField = $field.find( '.media-fallback-external' );

		if ( $field.attr( 'data-initialized' ) ) {
			return;
		}
		$field.attr( 'data-initialized', true );

		// Handle the media uploader.
		$media.find( '.media-upload-button' ).on( 'click', function( e ) {
			e.preventDefault();
			if ( typeof window.top.wp.media === 'undefined' ) {
				return;
			}

			const $$ = $( this );
			let frame = $( this ).data( 'frame' );

			// If the media frame already exists, reopen it.
			if ( frame ) {
				frame.open();
				return false;
			}

			// Create the media frame.
			frame = window.top.wp.media( {
				// Set the title of the modal.
				title: $$.data( 'choose' ),

				// Tell the modal to show only images.
				library: {
					type: $$.data( 'library' ).split( ',' ).map( function( v ) {
						return v.trim();
					} )
				},

				// Customize the submit button.
				button: {
					// Set the text of the button.
					text: $$.data( 'update' ),
					// Tell the button not to close the modal, since we're
					// going to refresh the page when the image is selected.
					close: false
				}
			} );

			// If there's a selected image, highlight it.
			frame.on( 'open', function() {
				const selection = frame.state().get( 'selection' );
				const selectedImage = $field.find( '.siteorigin-widget-input[type="hidden"]' ).val();
				if ( selectedImage ) {
					selection.add( window.top.wp.media.attachment( selectedImage ) );
				}
			} );

			// Store the frame.
			$$.data( 'frame', frame );

			// When an image is selected, run a callback.
			frame.on( 'select', function() {
				// Grab the selected attachment.
				const attachment = frame.state().get( 'selection' ).first().attributes;

				$field.find( '.current .thumbnail' ).attr( 'title', attachment.title );
				$field.find( '.current .title' ).html( attachment.title );
				$inputField.val( attachment.id );
				$inputField.trigger( 'change', { silent: true } );

				const $thumbnail = $field.find( '.current .thumbnail' );

				if ( typeof attachment.sizes !== 'undefined' ) {
					if ( typeof attachment.sizes.thumbnail !== 'undefined' ) {
						$thumbnail.attr( 'src', attachment.sizes.thumbnail.url ).fadeIn();
					} else {
						$thumbnail.attr( 'src', attachment.sizes.full.url ).fadeIn();
					}
				}
				else{
					$thumbnail.attr( 'src', attachment.icon ).fadeIn();
				}

				$field.find( '.media-remove-button' ).removeClass( 'remove-hide' ).attr( 'tabindex', 0 );

				frame.close();
			} );

			// Finally, open the modal.
			frame.open();
		});

		$field.find( 'a.media-remove-button' )
			.on( 'click', function( e ) {
				e.preventDefault();
				$inputField.val( '' );
				$field.find( '.current .title' ).empty();
				$inputField.trigger( 'change', { silent: true } );
				// Clear the src attribute first, then hide the thumbnail.
				const $thumbnail = $field.find( '.current .thumbnail' );
				$thumbnail.attr( 'src', '' );
				$thumbnail.fadeOut( 'fast' );
				$( this ).addClass( 'remove-hide' ).attr( 'tabindex', -1 );
			} );


		let dialog;
		let activeImportField = null;

		const reflowDialog = function() {
			if ( ! dialog ) {
				return;
			}

			const results = dialog.find( '.so-widgets-image-results' );
			if ( results.length === 0 ) {
				return;
			}

			const width = results.width(),
				perRow = Math.floor( width / 276 ),
				spare = ( width - perRow * 276 ),
				resultWidth = spare / perRow + 260;

			results.find( '.so-widgets-result-image' ).css( {
				'width' : resultWidth + 'px',
				'height' : resultWidth / 1.4 + 'px',
			} );
		};
		$( window ).on( 'resize', reflowDialog );

		const setupDialog = function( $currentField ) {
			if ( ! dialog ) {
				// Create the dialog.
				dialog = $( $('#so-widgets-bundle-tpl-image-search-dialog').html().trim() ).appendTo( window.top.document.body );
				dialog.find( '.close' ).on( 'click keyup', function( e ) {
					if ( e.type == 'keyup' && ! window.sowbForms.isEnter( e ) ) {
						return;
					}
					dialog.hide();
					// Only clear the importing class when dialog is manually closed, not during import.
					if ( ! dialog.hasClass( 'so-widgets-importing' ) ) {
						$( '.so-importing-image' ).removeClass( 'so-importing-image' );
						activeImportField = null;
					}
				} );

				const results = dialog.find( '.so-widgets-image-results' );

				const fetchImages = function( query, page ) {
					dialog.find( '.so-widgets-results-loading' ).fadeIn( 'fast' );
					dialog.find( '.so-widgets-results-loading strong' ).html(
						dialog.find( '.so-widgets-results-loading strong' ).data( 'loading' )
					);
					dialog.find( '.so-widgets-results-more' ).hide();

					$.get(
						ajaxurl,
						{
							'action' : 'so_widgets_image_search',
							'q' : query,
							'page' : page,
							'_sononce' : dialog.find( 'input[name="_sononce"]' ).val()
						},
						function( response ) {
							if ( response.error ) {
								alert( response.message );
								return;
							}

							results.removeClass( 'so-loading' );
							$.each( response.items, function( i, r ) {
								const result = $( $( '#so-widgets-bundle-tpl-image-search-result' ).html().trim() )
									.appendTo( results )
									.addClass( 'source-' + r.source );
								const img = result.find( '.so-widgets-result-image' );

								// Preload the image.
								img.css( 'background-image', 'url(' + r.thumbnail + ')' );
								img.data( 'thumbnail', r.thumbnail );
								img.data( 'preview', r.preview );

								if ( r.url ) {
									img.attr( {
										'href': r.url,
										'target': '_blank'
									} );
								}

								if ( r.full_url ) {
									img.data( {
										'full_url' : r.full_url,
										'import_signature' : r.import_signature
									} );
									img.attr( 'href', r.full_url );
								}

								if ( r.source === 'shutterstock' ) {
									img.append( $('#so-widgets-bundle-tpl-image-search-result-sponsored').html() );
								}
							} );

							if ( page === 1 ) {
								dialog.find( '#so-widgets-image-search-suggestions ul' ).empty();
								$.each( response.keywords, function( i, r ) {
									dialog.find( '#so-widgets-image-search-suggestions' ).show();
									dialog.find( '#so-widgets-image-search-suggestions ul' ).append(
										$( '<li></li>' ).append( $( '<a href="#"></a>' ).html( r ).data( 'keyword', r ) )
									);
								} );
							}

							dialog.find( '.so-widgets-results-loading' ).fadeOut( 'fast' );

							reflowDialog();
							dialog
								.find( '.so-widgets-results-more' ).show()
								.find( 'button' ).data( { 'query': query, 'page' : page + 1 } );
						}
					);
				};

				// Setup the search.
				dialog.find( '#so-widgets-image-search-form' ).on( 'submit', function( e ) {
					e.preventDefault();

					// Perform the search.
					const q = dialog.find( '.so-widgets-search-input' ).val();
					results.empty();

					if ( q !== '' ) {
						// Send the query to the server.
						fetchImages( q, 1 );
					}
				} );

				// Clicking on the related search buttons.
				dialog.on( 'click', '.so-keywords-list a', function( e ) {
					e.preventDefault();
					const $$ = $( this ).trigger( 'blur' );
					dialog.find('.so-widgets-search-input').val( $$.data( 'keyword' ) );
					dialog.find( '#so-widgets-image-search-form' ).trigger( 'submit' );
				} );

				// Clicking on the more button.
				dialog.find( '.so-widgets-results-more button' ).on( 'click', function() {
					const $$ = $( this );
					fetchImages( $$.data( 'query' ), $$.data( 'page' ) );
				} );

				let hoverTimeout;

				// Clicking on an image to import it.
				dialog.on( 'click', '.so-widgets-result-image', function( e ) {
					const $$ = $( this );
					if ( ! $$.data( 'full_url' ) ) {
						return;
					}

					e.preventDefault();

					if ( confirm( dialog.data( 'confirm-import' ) ) ) {
						dialog.addClass( 'so-widgets-importing' );

						const postId = $( '#post_ID' ).val();
						if ( postId === null ) {
							postId = '';
						}

						// Send the message to import the URL.
						$.get(
							ajaxurl,
							{
								'action' : 'so_widgets_image_import',
								'full_url' : $$.data( 'full_url' ),
								'import_signature' : $$.data( 'import_signature' ),
								'post_id' : postId,
								'_sononce' : dialog.find( 'input[name="_sononce"]' ).val()
							},
							function( response ) {
								if ( response.error === false ) {
									// This was a success.
									const $currentField = activeImportField;

									if ( $currentField && $currentField.length ) {
										// Update field.
										const $inputField = $currentField.find( '.siteorigin-widget-input' ).not( '.media-fallback-external' );
										$inputField.val( response.attachment_id );
										$inputField.trigger( 'change' );

										// Update the thumbnail.
										const $thumbnail = $currentField.find( '.current .thumbnail' );
										$thumbnail.attr( 'src', response.thumb );
										$thumbnail.fadeIn();

										$currentField.find( '.media-remove-button' )
											.removeClass( 'remove-hide' )
											.attr( 'tabindex', 0 );

										$currentField.removeClass( 'so-importing-image' );

										activeImportField = null;
									}
									dialog.hide();
								} else {
									alert( response.message );
									dialog.find( '.so-widgets-results-loading' ).hide();
								}

								// Clean up dialog state after import (success or failure).
								dialog.removeClass( 'so-widgets-importing' );
								dialog.find( '#so-widgets-image-search-frame' ).removeClass( 'so-widgets-importing' );
							}
						);

						// Clear the dialog.
						dialog.find( '.so-widgets-results-loading' ).fadeIn( 'fast' );
						dialog.find( '.so-widgets-results-loading strong' ).html(
							dialog.find( '.so-widgets-results-loading strong' ).data( 'importing' )
						);
						dialog.find( '.so-widgets-results-more' ).hide();
						dialog.find( '#so-widgets-image-search-frame' ).addClass( 'so-widgets-importing' );
					}
				} );

				// Hovering over an image to preview it.
				const previewWindow = dialog.find( '.so-widgets-preview-window' );
				dialog
					.on( 'mouseenter', '.so-widgets-result-image', function() {
						const $$ = $( this ),
							preview = $$.data( 'preview' );

						clearTimeout( hoverTimeout );

						hoverTimeout = setTimeout( function() {
							// Scale the preview sizes.
							let scalePreviewX = 1, scalePreviewY = 1;
							if ( preview[1] > $( window ).outerWidth() * 0.33 ) {
								scalePreviewX = $( window ).outerWidth() * 0.33 / preview[1];
							}
							if ( preview[2] > $( window ).outerHeight() * 0.5 ) {
								scalePreviewY = $( window ).outerHeight() * 0.5 / preview[2];
							}
							let scalePreview = Math.min( scalePreviewX, scalePreviewY );
							// Never upscale.
							if ( scalePreview > 1 ) {
								scalePreview = 1;
							}

							previewWindow.show()
								.find( '.so-widgets-preview-window-inside' )
								.css( {
									'background-image' : 'url(' + $$.data( 'thumbnail' ) + ')',
									'width' : preview[1] * scalePreview + 'px',
									'height' : preview[2] * scalePreview + 'px',
								} )
								.append( $( '<img />' ).attr( 'src', preview[0] ) );

							dialog.trigger( 'mousemove' );
						}, 1000 );

					} )
					.on( 'mouseleave', '.so-widgets-result-image', function() {
						previewWindow.hide().find( 'img' ).remove();
						clearTimeout( hoverTimeout );
					} );

				let lastX, lastY;
				dialog.on( 'mousemove', function( e ) {
					if ( e.clientX ) {
						lastX = e.clientX;
					}

					if ( e.clientY ) {
						lastY = e.clientY;
					}

					if ( previewWindow.is( ':visible' ) ) {
						const ph = previewWindow.outerHeight(),
							pw = previewWindow.outerWidth(),
							wh = $( window ).outerHeight(),
							ww = $( window ).outerWidth();


						// Calculate the top position.
						let top = lastY - ph / 2;
						top = Math.max( top, 10 );
						top = Math.min( top, wh - 10 - ph );

						// Calculate the left position.
						const left = ( lastX < ww / 2 ) ? lastX + 15 : lastX - 15 - pw;

						// Figure out where the preview needs to go.
						previewWindow.css( {
							'top': top + 'px',
							'left': left + 'px',
						} );

					}
				} );
			}

			dialog.show();
			dialog.find( '.so-widgets-search-input' ).trigger( 'focus' );
		};

		// Handle displaying the image search dialog.
		$media.find( '.find-image-button' ).on( 'click', function( e ) {
			e.preventDefault();

			// Clear any existing importing class and add it to current field.
			$( '.so-importing-image' ).removeClass( 'so-importing-image' );
			$field.addClass( 'so-importing-image' );

			// Store direct reference to the current field for later use.
			activeImportField = $field;

			setupDialog( $field );
		} );

		$inputField.on( 'change', function( event, data ) {
			if ( ! ( data && data.silent ) ) {
				const newVal = $inputField.val();
				if ( newVal) {
					const $thumbnail = $field.find( '.current .thumbnail' );
					const attachment = window.top.wp.media.attachment( newVal );
					attachment.fetch().done( function() {
						if ( attachment.has( 'sizes' ) ) {
							const sizes = attachment.get( 'sizes' );
							if ( typeof sizes.thumbnail !== 'undefined' ) {
								$thumbnail.attr( 'src', sizes.thumbnail.url ).fadeIn();
							}
							else {
								$thumbnail.attr( 'src', sizes.full.url ).fadeIn();
							}
						}
						else {
							$thumbnail.attr( 'src', attachment.get('icon') ).fadeIn();
						}
						$field.find( '.media-remove-button' ).removeClass( 'remove-hide' ).attr( 'tabindex', 0 );
					} );
				} else {
					$field.find( 'a.media-remove-button' ).trigger( 'click' );
				}

			}

			if ( typeof data == 'undefined' || ! data.external ) {
				$externalField.trigger( 'change', { internal: true } );
			}
		} );

		// Ensure both state both the media field and external field are kept up to date.
		$externalField.on( 'change', function( event, data ) {
			if (
				// Prevent direct input on external triggering the internal field.
				! $( event.currentTarget ).hasClass( 'media-fallback-external' ) &&
				(
					typeof data == 'undefined' ||
					! data.internal
				)
			) {
				$inputField.trigger( 'change', { external: true } );
			}

		} );
	};

	// If the current page isn't the site editor, set up the Media field now.
	if (
		window.top === window.self &&
		(
			typeof pagenow === 'string' &&
			pagenow !== 'site-editor'
		)
	) {
		$( document ).on( 'sowsetupformfield', '.siteorigin-widget-field-type-media', setupMediaField );
	}

	// Add support for the Site Editor.
	window.addEventListener( 'message', function( e ) {
		if ( e.data && e.data.action === 'sowbBlockFormInit' ) {
			$( '.siteorigin-widget-field-type-media' ).each( function() {
				if ( $( this ).attr( 'data-initialized' ) ) {
					return;
				}

				setupMediaField.call( this );
			} );
		}
	} );
} )( jQuery );
