Tomblooで自動タグ付加

タグ付けとか面倒なわりにLivedoor Clipではタグからしか検索できないみたいで。他の人が付けたタグを見て自動でタグ付ける。

addAround(LivedoorClip, 'post', function(proceed, args){
	var ps  = args[0];
	var url = "http://api.clip.livedoor.com/json/comments?" + queryString({
			link: ps.itemUrl,
			all : 1
		});

	return loadJSONDoc(url).addCallback(function(res){
		if(!res.isSuccess)
			return proceed(args);

		res.Comments.getTags = function(len, threshold){
			var tags = {
				add: function(tag){
					if(tag in tags)
						tags[tag]++;
					else
						tags[tag] = 1;
				},

				toArray: function(){
					var a = [{
						name    : x,
						count   : this[x],
						toString: function(){
							return this.count.toString()
						}
					} for(x in this) if(typeof this[x] == "number")];

					a.sort();
					a.reverse();

					return a;
				}
			};

			for each(let x in this) if(x.tags){
				for each(let tag in x.tags)
					tags.add(tag)
			}

			var r = tags.toArray();

			if(len)
				r.length = len;

			if(threshold)
				r = [tag for each(tag in r) if(tag.count >= threshold)];

			return [tag.name for each(tag in r)];
		};

		ps.tags = res.Comments.getTags(3, 2);

		return proceed(args);
	});
});