const cache = require('memory-cache')
    ,Slack = require('./slack.js').Slack;

function SlackManager() {
}

var instance = new SlackManager();

SlackManager.prototype.getScope = function() {
    return [
        "client"
    ];
}

SlackManager.prototype.lazyGet = function(sess) {
    var key = "SLACK_" +sess.sessId
        ,val = cache.get(key);
    if (val) {
        cache.put(key, val, 1000 * 60 * 60 * 24, function(key, val) {
            instance.removed(key, val);
        });
    } else {
        val = new Slack(sess);
        cache.put(key, val, 1000 * 60 * 60 * 24, function(key, val) {
            instance.removed(key, val);
        });
    }
    return val;
}

SlackManager.prototype.removed = function(key, slack) {
    slack.close();
}

module.exports.SlackManager = instance;