/** @type Config */
var CONFIG;

/** @constructor */
function Config(configData) {
    this.deviceId = null;

    this.services = {};

    // Load global configurations
    for (var i =0, nbConfig = configData.length; i < nbConfig; i++)
        if (configData[i]["service"] === null && configData[i]["device"] === null)
            this.mergeConfig(JSON.parse(configData[i]["config"]));
}

Config.prototype.mergeConfig = function(configData) {
    if (configData["services"])
        for (var i in configData["services"]) {
            this.services[i] = configData["services"][i];
        }
};

/** @return {string|undefined} */
Config.prototype.getEmojiProvider = function() {
    for (var i in this.services) {
        var emojiProvider = this.services[i]["emojiProvider"];
        if (emojiProvider && isValidEmojiProvider(emojiProvider))
            return emojiProvider;
    }
};