/**
 * FIXME: Document this controller !
 */

function StorageController() {

    /**
     * FIXME: Document this method !
     * @param options
     * @returns {boolean}
     */
    this.initController = function(options) {

        this._simpleStorage = window.localStorage;
        if (!this._simpleStorage) {
            return false;
        }

        if (options.contextId) {
            this._contextId = options.contextId;
        }

        this.setContextData({});
    };

    /**
     * FIXME: Document this method
     */
    this.getContextData = function() {

        var contextData = this._simpleStorage.getItem(this._dbPrefix + this._contextId);
        return JSON.parse(contextData);
    };

    /**
     * FIXME: document this method !
     * @param contextDataValue
     */
    this.setContextData = function(contextDataValue) {

        var contextDataKey = this._dbPrefix + this._contextId;
        this._simpleStorage.setItem(contextDataKey, JSON.stringify(contextDataValue));
    };

    /**
     * FIXME: Document this method !
     */
    this.deleteContextData = function() {

        this._simpleStorage.removeItem(this._dbPrefix + this._contextId);
    };

    /**
     * FIXME: Document this method
     * @param key
     * @param value
     * @returns {boolean}
     */
    this.setValue = function(key, value) {

        if (!key) return false;

        var contextData = this.getContextData();
        contextData[key] = value;
        this.setContextData(contextData);
    };

    /**
     * FIXME: Document this method !
     * @param key
     * @returns {*}
     */
    this.getValue = function(key) {

        if (!key) return false;

        var contextData = this.getContextData();
        return (contextData[key]) ? contextData[key] : null;
    };


    /**
     * Internal properties of controller
     * @type {null}
     * @private
     */
    this._contextId = null;
    this._simpleStorage = null;

    // ss = "simple storage"
    this._dbPrefix = 'ss_';
}