var http = require('http');
var https = require('https');
var fs = require('fs');
var lwip = require('lwip');


/*
* Skin retrieval methods are based on @jomo's CLI Crafatar implementation.
* https://github.com/jomo/Crafatar
*/
module.exports = {
	get_profile: function(uuid, callback) {
		https.get("https://sessionserver.mojang.com/session/minecraft/profile/" + uuid, function(res) {
			if (res.statusCode == "204") {
				callback(null);
				return null;
			}
			res.on('data', function(d) {
				var profile = JSON.parse(d);
				if (profile.error) callback(null);
				callback(profile);
			});
			
		}).on('error', function(e) {
			console.error(e);
		});
	},

	skin_url: function(profile) {
		var url = null;
		if (profile && profile.properties) {
			profile.properties.forEach(function(prop) {
				if (prop.name == 'textures') {
					var json = Buffer(prop.value, 'base64').toString();
					var props = JSON.parse(json);
					url = props.textures.SKIN.url;
				}
			});
		}
		return url;
	},

	skin_file: function(url, filename, callback) {
		var file = fs.createWriteStream(filename);
		http.get(url, function(res) {
			res.on('data', function(data) {
				file.write(data);
			}).on('end', function() {
				file.end();
				callback();
			});
		});
	},
	extract_face: function(infile, size, callback) {
		lwip.open(infile, function(err, image){
			image.batch()
			.crop(8,8,15,15)
			.resize(size, size, "nearest-neighbor")
			.toBuffer('png', function(err, buffer){
				callback(buffer);
			});
		});
	}
};