var request = require('request'),
		querystring = require('querystring');

var Note = function(key){
	this.key = key;
}
Note.prototype = new process.EventEmitter();

var SimpleNote = function(email, passwd){
	this.email = email;
	this.passwd = passwd;
	this.encoded_body = (new Buffer(this.toQuery({email:this.email,password:this.passwd}))).toString("base64");
	this.token = undefined;
	this.baseURL = "https://simple-note.appspot.com/api";

	var Auth = function(){};
	Auth.prototype = new process.EventEmitter();

	this.auth = new Auth();
	this.auth.on('login', function(){
		request({uri:this.baseURL+'/login', method:'POST', body:this.encoded_body}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				this.token = bdy;
			}
		}.bind(this));
	}.bind(this));
	
	this.auth.on('connected', function(fn){
		var timer = setInterval(function(){
			if(this.token!=undefined){
				fn();
				clearInterval(timer);
			}
		}.bind(this), 1000);
	}.bind(this));
	
	this.auth.emit('login');
	this.auth.emit('connected', function(){return true}.bind(this));
	
	return this
}

SimpleNote.prototype.list = function(cbk){
	var self = this;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/index?'+this.toQuery({email:this.email, auth:this.token}), method:'GET'}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				var jsn = JSON.parse(bdy);
				if(cbk) cbk(jsn);
			}else{ throw err }
		});
	}.bind(self));
}

SimpleNote.prototype.search = function(q, cbk){
	var self = this;
	var results = 10;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/search?'+this.toQuery({email:this.email, auth:this.token, query:q, results:results}), method:'GET'}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				var jsn = JSON.parse(bdy);
				if(cbk) cbk(jsn);
			}else{ throw err }
		});
	}.bind(self));
}

SimpleNote.prototype.get = function(key,cbk){
	var self = this;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/note?'+this.toQuery({email:this.email, auth:this.token, key:key}), method:'GET'}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				if(cbk) cbk(bdy);
			}else{ throw err }
		});
	}.bind(self));
};

SimpleNote.prototype.getNote = function(key){
	var self = this;
	var note = new Note(key);
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/note?'+this.toQuery({email:this.email, auth:this.token, key:key}), method:'GET'}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				note.content = bdy;
				note.emit('load');
			}else{ throw err }
		});
	}.bind(self));
	return note
}

SimpleNote.prototype.create = function(content,cbk){
	var self = this;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/note?'+this.toQuery({email:this.email, auth:this.token}), method:'POST', body:this.toBase64(content)}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				if(cbk) cbk(bdy);
			}else{ throw err }
		});
	}.bind(self));
};

SimpleNote.prototype.update = function(key, content, cbk){
	var self = this;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/note?'+this.toQuery({email:this.email, auth:this.token, key:key}), method:'POST', body:this.toBase64(content)}, function(err,res,bdy){
		if(!err && res.statusCode==200){
			if(cbk) cbk(bdy);
		}else{ throw err }
		});
	}.bind(self));
}

SimpleNote.prototype.delete = function(key,cbk){
	var self = this;
	self.auth.emit('connected', function(){
		request({uri:this.baseURL+'/delete?'+this.toQuery({email:this.email, auth:this.token, key:key}), method:'GET'}, function(err,res,bdy){
			if(!err && res.statusCode==200){
				if(cbk) cbk(bdy);
			}else{ throw err }
		});
	}.bind(self));
}

SimpleNote.prototype.toQuery = function(obj){
	return querystring.stringify(obj)
}

SimpleNote.prototype.toBase64 = function(str){
	return (new Buffer(str)).toString('base64')
}