(function() {
    "use strict";

    var token = storage.get("token");
    var isAdmin = false;
    var username = null;

    function call(method, params) {
        params = params || {};
        //Retrieve the callbacks
        var onSuccess = params.onSuccess || noop;
        var onFailure = params.onFailure || noop;
        var onFinish = params.onFinish || noop;

        if(token) params.token = token;

        //Remove them from this object since we will just reuse it later
        delete params['onFinish'];
        delete params['onFailure'];
        delete params['onSuccess'];

        //Call to our server
        $.ajax({
            url: '/api/' + method,
            cache: false,
            dataType: 'json',
            data: params,
            complete: onFinish,
            type: 'POST',
            success: function(data) {
                if(data.success) {
                    onSuccess(data.result);
                }
                else {
                    onFailure(data);
                }
            },
            error: function() {
                onFailure({
                    error: "net_err",
                    desc: "Network error"
                });
            }
        });
    }

    function setToken(value) {
        token = value;
        storage.set('token', value);
    }

    function clearToken() {
        token = null;
        storage.set('token', null);
    }

    function noop() {}

    function addTrivialFunction(name) {
        window.nomnom[name] = function(params) {
            return call(name, params);
        }
    }

    var trivialFunctions = [
        'search',
        'view_place',
        'view_menu',
        'view_food',
        'pending_places',
        'pending_foods',
        'approve_place',
        'reject_place',
        'approve_food',
        'reject_food',
        'suggest_place',
        'suggest_food',
        'edit_place',
        'edit_food',
        'remove_place',
        'remove_food',
        'add_to_menu',
        'remove_from_menu',
        'edit_menu',
        'rate',
        'post_review',
        'view_reviews',
        'suggested_places',
        'suggested_foods',
        'view_profile',
        'similar_foods'
    ];

    //To export functions from a module, just return an object that includes them
    window.nomnom = {
        //currently, login is quite simple, in the future, we can save the token in the browser after a successful login
        login: function(params) {
            params.password = hex_md5(params.password);
            var userOnSuccess = params.onSuccess || noop;
            params.onSuccess = onSuccess;
            call('login', params);

            function onSuccess(result) {
                username = params.username;
                setToken(result.token);
                userOnSuccess(result);
            }
        },

        register: function(params) {
            params.password = hex_md5(params.password);
            call('register', params);
        },
        logout: function(params) {
            clearToken();
            call('logout', params);
        },
        isLoggedIn: function() {
            return token ? true:false;
        }
    }

    for(var i = 0; i < trivialFunctions.length; ++i)
        addTrivialFunction(trivialFunctions[i]);
})();