dbot/modules/link/link.js

104 lines
3.6 KiB
JavaScript

/**
* Module Name: Link
* Description: Stores recent channel links, with commands to retrieve
* information about links.
*/
var request = require('request'),
_ = require('underscore')._,
ent = require('ent');
var link = function(dbot) {
this.urlRegex = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
this.links = {};
this.fetchTitle = function(event, link) {
request(link, function(error, response, body) {
if(!error && response.statusCode == 200) {
body = body.replace(/(\r\n|\n\r|\n)/gm, " ");
var title = body.valMatch(/<title>(.*)<\/title>/, 2);
if(title && title.length < 140) {
event.reply(ent.decode(title[1]).trim());
}
}
});
};
var commands = {
'~title': function(event) {
var link = this.links[event.channel.name];
if(!_.isUndefined(event.params[1])) {
var urlMatches = event.params[1].match(this.urlRegex);
if(urlMatches !== null) {
link = urlMatches[0];
}
}
this.fetchTitle(event, link);
},
'~xkcd': function(event) {
var comicId = event.params[1] || "";
if(comicId == "*") {
request("http://xkcd.com/info.0.json", function(error, response, body){
try {
if(response.statusCode == "200") {
data = JSON.parse(body);
event.params[1] = (Math.floor(Math.random() * data.num) + 1);
dbot.commands['~xkcd'](event);
}
} catch(err) { };
});
} else {
if(comicId !== "") {
comicId = comicId + "/";
}
var link = "http://xkcd.com/"+comicId+"info.0.json";
request(link, function(error, response, body) {
try {
if (response.statusCode == "200") {
data = JSON.parse(body);
event.reply(dbot.t("xkcd",data));
} else {
event.reply(dbot.t("no-hits"));
}
} catch(err) { };
});
}
},
'~ud': function(event) {
var query = event.input[1];
var reqUrl = 'http://api.urbandictionary.com/v0/define?term=' + encodeURI(query);
request(reqUrl, function(error, response, body) {
try {
var result = JSON.parse(body);
if(_.has(result, 'result_type') && result.result_type != 'no_results') {
event.reply(query + ': ' + result.list[0].definition.split('\n')[0]);
} else {
event.reply(event.user + ': No definition found.');
}
} catch(err) { }
});
}
};
commands['~ud'].regex = [/~ud (.+)/, 2];
this.commands = commands;
this.listener = function(event) {
var urlMatches = event.message.match(this.urlRegex);
if(urlMatches !== null) {
this.links[event.channel.name] = urlMatches[0];
if(dbot.config.link.autoTitle == true) {
this.fetchTitle(event, urlMatches[0]);
}
}
}.bind(this);
this.on = 'PRIVMSG';
};
exports.fetch = function(dbot) {
return new link(dbot);
};