"use strict";

angular.module("iisland").factory('user_service', ['$http', '$interval', function($http, $interval) {

	var current_state = {
		state : {
			transient : {
				"sound" : true,
				"app" : ""
			}
		}
	};
	var state_subscribers =  {};
	var logged_in = false;
	var jernej = 1;
	var state_update_call = function() {
		//console.log("JERNEJ: state_update_call");
		if (current_state.user) {
			$("body").addClass("iisland_logged_in");
			$("body").removeClass("iisland_not_logged_in");
		} else {
			$("body").removeClass("iisland_logged_in");
			$("body").addClass("iisland_not_logged_in");
		}

		angular.forEach(state_subscribers, function(subscriber) {
			try {
				subscriber(current_state);
			} catch(e) {
				//console.error("ERROR WHILE UPDATING STATE:", e);
			}
		});
	};

	var s4 = function() {
		return (((1+Math.random())*0x10000)|0).toString(16).substring(1);
	};

	var send_email = function(email, jezik) {
        return $http.post("/api/iisland_login/send_email", {"email" : email, "jezik" : jezik}).then(function(response){
			return(response);
		});
    };

    var confirm_and_login_user = function(token) {
		return $http.get("/api/iisland_login/confirm_and_login_user/" + token).then(function(response) {
			if (response.data.code === "error") {
				return response;
			} else {
				$("#iisland .landing").addClass("hide");
				current_state.user = response.data.message.user;
				var transient = angular.copy(current_state.state.transient);
				current_state.state = response.data.message.state;
				current_state.state.transient = transient;
				if(current_state.user !== undefined){
					logged_in = true;
				} else{
					current_state.user = {};
					current_state.user.error = response.data.message;
				}
				state_update_call();
				return response;
			}
		});
    };

 	var check_login = function() {
        return $http.post("/api/iisland_login/check_login", {}).then(function(response){
        	if(response.data){
        		if(response.data.user){
        			$("#iisland .landing").addClass("hide");
	        		current_state.user = response.data.user;
					var transient = angular.copy(current_state.state.transient);
					current_state.state = response.data.state;
					current_state.state.transient = transient;
				}
				else {//not logged in
					current_state.user = undefined;
					//current_state.user.error = {};
				}
			}
			state_update_call();
            return response;
        });
    };

	var logout_user = function() {
		$("#iisland .landing").addClass("hide");
		$http.post("/api/iisland_login/logout_user", {}).then(function(){
			current_state.user = undefined;
			current_state.state = {
				transient : current_state.state.transient
			};
			logged_in = false;
			state_update_call();

			//setTimeout(function() {location.reload();}, 1000);
		});

	};

	var login_user = function(email, pw, jezik) {
		return $http.post("/api/iisland_login/login_user_web", {"email" : email, "pw" : pw, "jezik" : jezik}).then(function(response){
			if (response.data.code === "error") {
				return response;
			} else {
				$("#iisland .landing").addClass("hide");
				current_state.user = response.data.message.user;
				var transient = angular.copy(current_state.state.transient);
				current_state.state = response.data.message.state;
				current_state.state.transient = transient;

				if(current_state.user !== undefined){
					logged_in = true;
				} else{
					current_state.user = {};
					current_state.user.error = response.data.message;
				}
				state_update_call();
				return response;
			}
		});
	};

	var register_user = function(email, pw, nick, fb_profil, send_novice, jezik, ep_num, story_state) {

		//console.error("KLEN: USER SERVICE register_user()  story_state: "+story_state);
			
		return $http.post("/api/iisland_login/register_user", {
			"email" : email,
			"pw" : pw,
			"nick" : nick,
			"fb_profil" : fb_profil,
			"send_novice" : send_novice,
			"jezik" : jezik,
			"ep_num" : ep_num,
			"story_state" : story_state
						
		}).then(function(response){
			return response;
		});
	};

	var state_subscribe = function(callback) {
		//console.info("user_service", "got subscription");
		var ID = s4();
		state_subscribers[ID] = callback;
		//state_subscribers[ID](angular.copy(current_state));
		try {
			callback(current_state);
		} catch (e) {

		}

		return(ID);
	};

	var state_unsubscribe = function(which) {
		if (state_subscribers[which]) {
			state_subscribers.splice(which, 1);
			return(true);
		} else {
			return(false);
		}
	};

	var silent_state_update = function(key, value) {
		current_state.state[angular.copy(key)] = angular.copy(value);
		var new_state = angular.copy(current_state.state);
		if(new_state.hasOwnProperty('transient')){
			delete(new_state.transient);
		}
		$http.post("/api/iisland_login/save_state", {"email" : current_state.user.email, "state" : new_state}).then(function(){
			return true;
		});
	};

	var state_update = function(key, value) {
		var state_before = angular.copy(current_state);
		//console.info("state_update12", key, value, state_before.state);
		if (current_state.user != undefined) {
			////console.info("state changed, NAREDIL1"+ current_state.state.transient.sound);
			silent_state_update(key, value);
			//jernej = jernej + 1;
			//current_state.state.transient.jernej = jernej;
			////console.info("state changed, NAREDIL2" + current_state.state.transient.sound);

		}
		else{
			current_state.state[angular.copy(key)] = angular.copy(value);
		}
		if (!angular.equals(current_state.state, state_before.state)) {
			//console.info("state changed, notifying", current_state.state,state_before.state);
			state_update_call();
		} else {
			//console.info("state not changed, skip notify", current_state.state,state_before.state);
			state_update_call();//Jernej to je samo začasni hack, vedno začne s false in potem ni razlike, zdaj vedno pošljem state change, tudi če ni spremembe
		}
	};

	$interval(function() {
		check_login();
	}, 60 * 1000);

	check_login();

	return {
		state_subscribe: state_subscribe,
		state_unsubscribe:state_unsubscribe,
		state_update:state_update,
		login_user: login_user,
		register_user: register_user,
		confirm_and_login_user: confirm_and_login_user,
		logout_user: logout_user,
		send_email: send_email,
		check_login: check_login
	};
}]);