/*  _____________________________________________________________________________
 * |                                                                             |
 * |                    === WARNING: GLOBAL GADGET FILE ===                      |
 * |                  Changes to this page affect many users.                    |
 * | Please discuss changes on the talk page or on ] before editing. |
 * |_____________________________________________________________________________|
 *
 * Imported from version 1.0 as of 17:18, 9 April 2011 (UTC) from ]
 * Adds a "Citation bot" link to the toolbox, and a button beneath edit fields, see ]
 */

// @Version 1.0 - Adds an "Expand citations" link to the toolbox, and a button beneath edit fields.
// @Version 1.1 - Modify gadget to use jQuery and Citation Bot's new gadgetapi on Tool Labs
// @Version 1.2 - Make use of new oojs-ui widget style

var $spinnerspan;
var cbButton;

function addCBToToolbox() {
	if ( mw.config.get( 'wgCanonicalNamespace' ) !== 'Special' ) {
		var pTb = document.getElementById("p-tb");
		if ( !pTb ) {
			return;
		}
		var escPageName = encodeURIComponent( mw.config.get( 'wgPageName' ));
		mw.util.addPortletLink("p-tb", "//citations.toolforge.org/process_page.php?edit=toolbar&slow=1&page="+escPageName, 'Expand citations', 't-citationbot', "Expand citations and fix common formatting errors");
	}
}


// Add a citation bot button next to the "Show changes" button
function addCitationButton() {
	if ( document.getElementById( 'wpDiff' ) ) {
		var diff = document.getElementById( 'wpDiffWidget' );
		cbButton = new OO.ui.ButtonWidget();

		cbButton.setElementId( 'wpCitations' )
		.setIcon( 'articleCheck' )
		.setLabel( 'Citations' )
		.setFlags( 'secondary' );

		cbButton.on( 'click', function () {
			$.ajax( {
				timeout: 600000, // thousandths of a second, so 10 minutes
				type: 'POST',
				url: 'https://citations.toolforge.org/gadgetapi.php?slow=1',
				data: {
					text: $( '#wpTextbox1' ).textSelection( 'getContents' ),
					summary: $( '#wpSummary' ).textSelection( 'getContents' )
				},
				beforeSend: function() {
					$( cbButton.$element ).replaceWith( $spinnerspan );
				},
				success: function( data ) {
					expandedText = data.expandedtext;
					editSummary = data.editsummary;
					$( '#loader' ).replaceWith( cbButton.$element );
					if ( expandedText ) {
						// Populate text box with received expanded text
						$( '#wpTextbox1' ).textSelection( 'setContents', expandedText );
						// Populate edit summary textbox with received edit summary
						$( '#wpSummary' ).textSelection( 'setContents', editSummary );
						// Click 'Show preview' button
						$( '#wpDiff' ).click();
					} else {
						$( '#loader' ).replaceWith( cbButton.$element );
						alert( 'Error: Replacement text empty' );
					}
				},
				error: function( data ) {
					$( '#loader' ).replaceWith( cbButton.$element );
					alert( 'Error: Citations request failed' );
				}
			} );
		} );
		
		cbButton.$element.insertBefore( $(diff.nextSibling) );
	}
}

// Add a button to allow expanding citations in the text in the edit textbox
mw.hook( 'wikipage.editform' ).add( function() {
	if( !$spinnerspan ) {
		$spinnerspan = $( '<span id="loader"></span>');
	}
	if ( document.images ) {
		// Loading gif when Citations request is processing
		var spinner = new Image();
		spinner.src = "//upload.wikimedia.org/wikipedia/commons/4/42/Loading.gif";
		$spinnerspan.append( spinner );
	}
	if( $('#wpCitations').length === 0 ){
		mw.loader.using(  ).then( addCitationButton );
	}
} );

// Add a toolbox button that runs Citation Bot on the most recent saved revision of the page
if ( $.inArray( mw.config.get( 'skin' ),  ) !== -1 ) {
  $( addCBToToolbox );
}