tweet freezer

tweet_freezer.js

function TweetFreezer(casper_instance) {
    this.casper = casper_instance;
    this.tweet_url = false;

    this.set_tweet_url = function(tweet_url) {
        this.tweet_url = tweet_url;

        return this;
    };

    /* extracts tweet id from the url */
    this.find_tweet_id = function() {
        var match = this.tweet_url.match("status/([0-9]*)?");
        if (match) {
            return match[1];
        }

        return false;
    };
    this.freeze_tweet = function () {
        console.log('freezing.');
        console.log(this.tweet_url);
        tweet_id = this.find_tweet_id();
        casper.start(this.tweet_url, function() {
            this.captureSelector( tweet_id+ ".png", '.permalink-tweet-container');
            this.echo('{"status": "success"}');
        });

        casper.run();

    };
    this.init = function() {
        tweet_url = casper.cli.get(0);
        if(typeof tweet_url == 'undefined') {
            console.log('{"status": "error"}');
            casper.exit();
        }
        this.set_tweet_url(tweet_url);
        if(!this.is_tweet_url_valid()) {
            console.log({'status': "error"});
            casper.exit();
        }

        this.freeze_tweet();

    };

    this.is_tweet_url_valid = function() {
        var match = this.tweet_url.match("https?://twitter.com/[a-zA-Z_-]+/status/[0-9]+/?");
        if(match) {
            return true;
        }

        return false;

    }

}

var casper = require("casper").create();

tweet_freezer = new TweetFreezer(casper);
tweet_freezer.init();