"use strict";

var Subscribable = require("./subscribable");

var StateMachine = Subscribable.inherit({
    className: "StateMachine",
    constructor: function (initialState, graph) {
        Subscribable.fn.constructor.call(this);
        
        this._state = initialState;
        this._graph = graph;
    },
    manipulation: function (name) {
        var newState = this._graph[this._state][name];
        if (newState) {
            var oldState = this._state;
            this._state = newState;
            
            this.trigger("stateChanged", {
                newState: newState,
                manipulation: name,
                oldState: oldState
            });
        } else {
            this.trigger("stateMissed");
        }
    },
    state: function () {
        return this._state;
    }
});

module.exports = StateMachine;