var redis = require('redis');

var interval = 3600 * 1000;
var key_prefix = 'kamehame';

function beat(redis_client) {
    var redis_key = key_prefix + '.gw:' + config.globals.gateway_name
    
    var data = {
        gateway_name: config.globals.gateway_name,
        admin_port: config.globals.admin_port,
        expresso_port: config.globals.expresso_port,
    };
    
    try {
        var value = JSON.stringify(data)
        
        redis_client.set(redis_key, value);
        redis_client.expire(key, interval * 2);
        
        redis_client.publish(redis_key, value);
    } 
    catch (err) {
    }
}

function start(config) {
    var redis_client = redis.createClient(config.globals.redis_port, config.globals.redis_host);
    
    beat(redis_client);
    setInterval(beat, interval, redis_client);
}