/**
 * JavaScript functions for Vote extension.
 *
 * TODO: Should refactor this into a jQuery widget.
 * The widget should get a PageID in its constructor so it can work on any page
 * for any page and with multiple instances per page.
 *
 * @constructor
 *
 * @author Jack Phoenix <jack@countervandalism.net>
 * @author Daniel A. R. Werner < daniel.a.r.werner@gmail.com >
 */
var IUT = function IUT() {
	this.clearRatingTimer = null;
	this.voted_new = [];
	this.id = 0;
	this.last_id = 0;
	this.imagePath = mw.config.get( 'wgExtensionAssetsPath' ) + '/VoteNY/images/';

	/**
	 * Called when voting through the green square voting box
	 *
	 * @param TheVote
	 * @param PageID Integer: internal ID number of the current article
	 */
	this.clickVote = function( TheVote, PageID ) {
		( new mw.Api() ).postWithToken( 'edit', {
			action: 'iusethis',
			format: 'json',
			what: 'vote',
			pageId: PageID,
			voteValue: TheVote
		} ).done( function( data ) {
			$( '#PollVotes' ).html( data.iusethis.result );
			$( '#Answer' ).html(
				'<a href="javascript:void(0);" class="vote-unvote-link">' +
				mediaWiki.msg( 'iusethis-unvote-link' ) + '</a>'
			);
		} );
	};

	/**
	 * Called when removing your vote through the green square voting box
	 *
	 * @param PageID Integer: internal ID number of the current article
	 */
	this.unVote = function( PageID ) {
		( new mw.Api() ).postWithToken( 'edit', {
			action: 'voteny',
			format: 'json',
			what: 'delete',
			pageId: PageID
		} ).done( function( data ) {
			$( '#PollVotes' ).html( data.iusethis.result );
			$( '#Answer' ).html(
				'<a href="javascript:void(0);" class="vote-vote-link">' +
				mediaWiki.msg( 'iusethis-link' ) + '</a>'
			);
		} );
	};

	this.startClearRating = function( id, rating, voted ) {
		var voteNY = this;
		this.clearRatingTimer = setTimeout( function() {
			voteNY.clearRating( id, 0, rating, voted );
		}, 200 );
	};

	this.clearRating = function( id, num, prev_rating, voted ) {
		if ( this.voted_new[id] ) {
			voted = this.voted_new[id];
		}
	};

	this.updateRating = function( id, num, prev_rating ) {
		if ( this.clearRatingTimer && this.last_id == id ) {
			clearTimeout( this.clearRatingTimer );
		}
		this.clearRating( id, num, prev_rating );
		for ( var x = 1; x <= num; x++ ) {
			$( '#rating_' + id + '_' + x ).attr( 'src', this.imagePath + 'star_voted.gif' );
		}
		this.last_id = id;
	};
};

// TODO: Make event handlers part of a widget as described in the VoteNY's TODO and reduce this
//       code to instantiating such a widget for the current wiki page if required.
$( function() {
	var vote = new IUT();

	// Green voting box's link
	$( '.vote-action' ).on( 'click', '> a', function( event ) {
		if ( $( this ).hasClass( 'vote-unvote-link' ) ) {
			vote.unVote( mw.config.get( 'wgArticleId' ) );
		} else {
			vote.clickVote( 1, mw.config.get( 'wgArticleId' ) );
		}
	} );

} );