/**

 * Creates a dialog containing posts that can have a particular media attached

 * to it.

 *

 * @since 2.7.0

 * @output wp-admin/js/media.js

 *

 * @namespace findPosts

 *

 * @requires jQuery

 */

( function( $ ){

	window.findPosts = {

		/**

		 * Opens a dialog to attach media to a post.

		 *

		 * Adds an overlay prior to retrieving a list of posts to attach the media to.

		 *

		 * @since 2.7.0

		 *

		 * @memberOf findPosts

		 *

		 * @param {string} af_name The name of the affected element.

		 * @param {string} af_val The value of the affected post element.

		 *

		 * @return {boolean} Always returns false.

		 */

		open: function( af_name, af_val ) {

			var overlay = $( '.ui-find-overlay' );

			if ( overlay.length === 0 ) {

				$( 'body' ).append( '<div class="ui-find-overlay"></div>' );

				findPosts.overlay();

			}

			overlay.show();

			if ( af_name && af_val ) {

				// #affected is a hidden input field in the dialog that keeps track of which media should be attached.

				$( '#affected' ).attr( 'name', af_name ).val( af_val );

			}

			$( '#find-posts' ).show();

			// Close the dialog when the escape key is pressed.

			$('#find-posts-input').trigger( 'focus' ).on( 'keyup', function( event ){

				if ( event.which == 27 ) {

					findPosts.close();

				}

			});

			// Retrieves a list of applicable posts for media attachment and shows them.

			findPosts.send();

			return false;

		},

		/**

		 * Clears the found posts lists before hiding the attach media dialog.

		 *

		 * @since 2.7.0

		 *

		 * @memberOf findPosts

		 *

		 * @return {void}

		 */

		close: function() {

			$('#find-posts-response').empty();

			$('#find-posts').hide();

			$( '.ui-find-overlay' ).hide();

		},

		/**

		 * Binds a click event listener to the overlay which closes the attach media

		 * dialog.

		 *

		 * @since 3.5.0

		 *

		 * @memberOf findPosts

		 *

		 * @return {void}

		 */

		overlay: function() {

			$( '.ui-find-overlay' ).on( 'click', function () {

				findPosts.close();

			});

		},

		/**

		 * Retrieves and displays posts based on the search term.

		 *

		 * Sends a post request to the admin_ajax.php, requesting posts based on the

		 * search term provided by the user. Defaults to all posts if no search term is

		 * provided.

		 *

		 * @since 2.7.0

		 *

		 * @memberOf findPosts

		 *

		 * @return {void}

		 */

		send: function() {

			var post = {

					ps: $( '#find-posts-input' ).val(),

					action: 'find_posts',

					_ajax_nonce: $('#_ajax_nonce').val()

				},

				spinner = $( '.find-box-search .spinner' );

			spinner.addClass( 'is-active' );

			/**

			 * Send a POST request to admin_ajax.php, hide the spinner and replace the list

			 * of posts with the response data. If an error occurs, display it.

			 */

			$.ajax( ajaxurl, {

				type: 'POST',

				data: post,

				dataType: 'json'

			}).always( function() {

				spinner.removeClass( 'is-active' );

			}).done( function( x ) {

				if ( ! x.success ) {

					$( '#find-posts-response' ).text( wp.i18n.__( 'An error has occurred. Please reload the page and try again.' ) );

				}

				$( '#find-posts-response' ).html( x.data );

			}).fail( function() {

				$( '#find-posts-response' ).text( wp.i18n.__( 'An error has occurred. Please reload the page and try again.' ) );

			});

		}

	};

	/**

	 * Initializes the file once the DOM is fully loaded and attaches events to the

	 * various form elements.

	 *

	 * @return {void}

	 */

	$( function() {

		// Opens a manage media frame into the grid.

		if ( $mediaGridWrap.length && window.wp && window.wp.media ) {

			settings = _wpMediaGridSettings;

			var frame = window.wp.media({

				frame: 'manage',

				container: $mediaGridWrap,

				library: settings.queryVars

			}).open();

			// Fire a global ready event.

			$mediaGridWrap.trigger( 'wp-media-grid-ready', frame );

		}

		// Prevents form submission if no post has been selected.

		$( '#find-posts-submit' ).on( 'click', function( event ) {

			if ( ! $( '#find-posts-response input[type="radio"]:checked' ).length )

				event.preventDefault();

		});

		// Submits the search query when hitting the enter key in the search input.

		$( '#find-posts .find-box-search :input' ).on( 'keypress', function( event ) {

			if ( 13 == event.which ) {

				findPosts.send();

				return false;

			}

		});

		// Binds the click event to the search button.

		$( '#find-posts-search' ).on( 'click', findPosts.send );

		// Binds the close dialog click event.

		$( '#find-posts-close' ).on( 'click', findPosts.close );

		// Binds the bulk action events to the submit buttons.

		$( '#doaction' ).on( 'click', function( event ) {

			/*

			 * Handle the bulk action based on its value.

			 */

			$( 'select[name="action"]' ).each( function() {

				var optionValue = $( this ).val();

				if ( 'attach' === optionValue ) {

					event.preventDefault();

					findPosts.open();

				} else if ( 'delete' === optionValue ) {

					if ( ! showNotice.warn() ) {

						event.preventDefault();

					}

				}

			});

		});

		/**

		 * Enables clicking on the entire table row.

		 *

		 * @return {void}

		 */

		$( '.find-box-inside' ).on( 'click', 'tr', function() {

			$( this ).find( '.found-radio input' ).prop( 'checked', true );

		});

	});

})( jQuery );