User:Lethosor/rater 0.1.js

/*
Rating Script (DF Wiki)

Improved version -- now uses jQuery, extra options (existence not guaranteed)
*/

addOnloadHook(function(){jQuery(function($){
	SCOPE = this
	var rater = {}
	function PD(e){//preventDefault
		if(e && 'preventDefault' in e && 'call' in e.preventDefault)
			e.preventDefault()
	}
	
	rater.page = {
		name: wgPageName,
		url: wgScript+'?title='+wgPageName
	}

	// Set up UI
	rater.overlay = $('<div>').css({width:'100%', height:'100%', top:0, left:0,
		position:'fixed', 'background-color':'rgba(128,128,128,0.5)', 'z-index':9999})
		.hide().appendTo('body');
	rater.box = $('<div>').css({width:'80%', height:'80%', top:'10%', left:'10%',
		position:'fixed', 'background-color':'white', 'z-index':10000, padding:'1em'})
		.hide().appendTo('body');
	rater.cancel_link = $('<a>').text('Cancel').attr('href','#rater-cancel').css({color:'red', 
		'float':'right'}).appendTo(rater.box);
	rater.box.clear = function(){
		rater.box.html('')
		rater.box.append(rater.cancel_link)
			.append($('<h2>').text('Rating '+wgPageName));
	};
	rater.box.clear();
	
	rater.cancel = function(e){
		PD(e)
		rater.overlay.stop(1,1).fadeOut(500);
		rater.box.stop(1,1).fadeOut(500);
	}; 
	$('body').on('click','a[href=#rater-cancel]',rater.cancel);
	
	// Set up link
	rater.show_link = $("<li>").append($('<span>').append(
		$("<a href='#rater-invoke'>").text('Rate')
	));
	$("#left-navigation #p-namespaces ul:nth(0)").append(rater.show_link)
	
	rater.invoke = function(e){
		PD(e);
		rater.overlay.stop(1,1).fadeIn(500);
		rater.box.stop(1,1).fadeIn(500);
		rater.box.clear()
		rater.box.append('<p>Performing automatic tests, please wait...</p>');
		rater.begin_tests();
	};
	$('body').on('click', 'a[href=#rater-invoke]', rater.invoke)
	
	/*
	Tests
	
	Usage: Specify a URL to get data from and `processor` function to extract the
	needed data
	
	*/
	var tests={};
	tests.list={}; //list of all tests
	tests.results={}; //shortcut: data[x]==lists[x].data
	
	tests.num_waiting = 0;
	
	tests.add = function(name, data_url, processor){ 
		//Note: jQuery caches Ajax requests by default, no need to here
		tests.list[name] = {data_url:data_url, processor:processor}; 
		//console.log('retrieving')
		$.get(data_url, function(data){
			tests.process(name, data);
		});
		tests.num_waiting++
	};
	tests.process = function(name,raw_data){
		result = tests.list[name].processor(raw_data);
		tests.list[name].result = tests.results[name] = result
		tests.num_waiting--
		if(tests.num_waiting <= 0){
			setTimeout(tests.all_complete, 1); //avoid stacking
		}
	};
	
	tests.all_callbacks=[]; //when all tests are done
	tests.all_complete = function(){
		for(i=0; i<tests.all_callbacks.length; i++){
			tests.all_callbacks[i]();
		}
	};
	tests.add_callback=function(func){
		tests.all_callbacks.push(func);
	};
	
	rater.begin_tests = function(){
		render_url=rater.page.url+'&action=render'
		tests.add('redlinks', render_url, function(data){
			all_links = data.match(/<a .*<\/a>/g);
			if(!all_links) return 0; //no links
			total_redlinks=0;
			$.each(all_links, function(i,link){
				if(link.match(/href=.*redlink=1/)) total_redlinks++;
			});
			return total_redlinks
		});
		tests.add('editors', rater.page.url+'&action=history&limit=250', function(data){
			all_editors = data.match(/<li>.*<\/li>/g)
			if(!all_editors) return 0; //no editors
			editors={};
			$.each(all_editors, function(i,li){
				ed = $(li).find('.mw-userlink:nth(0)').text()
				if(ed in editors) editors[ed]=0;
				editors[ed]++ 
			});
			num=0;
			for(i in editors){
				if(i in {}) continue;
				num++
			}
			return num;
		});
		tests.add('orphaned', wgScript+'/Special:WhatLinksHere/'+wgPageName, function(data){
			return !$(data).find('#mw-whatlinkshere-list').length;
		});
		tests.add('deadend', render_url, function(data){
			return !$(data).find('a[href*="'+wgScript+'"]').length;
		});
		tests.add_callback(function(){
			rater.display_test_results();
		});
	};
	
	rater.score_bool=function(v,y,n){
		if(isNaN(Number(n))) n=-y;
		return Number(v?y:n);
	};
	rater.score_int=function(v,weight,base){
		if(!base) base=0;
		return v*weight+base;
	};
	
	rater.display_test_results=function(){
		rater.box.clear();
		data=tests.results;
		for(i in data){
			if(i in {}) continue;
			rater.box.append($("<p>"+i+": "+data[i]+"</p>"));
		}
		
		
		rater.score = 0
			+rater.score_bool(data.deadend,-25)
			+rater.score_bool(data.orphaned,-50)
			+rater.score_int(data.redlinks,-5)
			+rater.score_int(data.editors,35,-30)
		;
		rater.box.append($("<p>").text("Score: "+rater.score))
	};
	
	//export
	rater.tests = tests;
	window.rater=rater
	return rater;
	
});});