Feed generator for tenki.jp

tenki-jp-feed.js

module['exports'] = function Tenkijp(hook) {
  var md5 = require("md5");
  if (md5(hook.params.magic) != "0f20e92d496b9b9a2ce77c0c5b0c24b9") {
    console.log("md5 error", hook.req.headers['user-agent'], hook.req.headers['x-forwarded-for'], hook.params.magic);
    return;
  }
  var cheerio = require("cheerio");
  var req = require("request");
  var rss = require("rss");
  var url = hook.params.url || "http://www.tenki.jp/amedas/3/14/43241.html";
  var ip = hook.req.headers['x-forwarded-for'];
  var ua = hook.req.headers['user-agent'];
  if (!ua.match(/curl|Mozilla/)) {
    console.log("user-agent error", ua, "magic", hook.params.magic);
    return;
  }
  req(url, function(error, res, body) {
    if (!error && res.statusCode == 200) {
      var $ = cheerio.load(body);
      var date = $("td.bold").eq(1),
          time = date.next(),
          deg = time.next(),
          rain = deg.next(),
          wdir = rain.next(),
          wind = wdir.next();
      var rdate = $("h3 > time").attr("datetime");
      var fragment = rdate.replace(/\D+/g, "");
      var title = $("title").text();
//      var imgurl = $("table.amedas-point-graph-table > tr:nth-child(1) > td > img").attr("src")
      var imgurl = $(".amedas-point-graph-table > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(2) > img:nth-child(1)").attr("src")
      var string = title.replace(/\(.*/, "") + " " +
        date.text() + " " +
        time.text() + " " +
        "気温" + deg.text() + "度 " +
        "降水" + "量" + rain.text() + "mm " +
        wdir.text() + "の風" +
        wind.text() + "m";
      var feed = new rss({title: title, description: title});
      feed.item({
        title: string,
        description: "<img src=" + imgurl + "></img>",
        url: url + "?" + fragment
      });
      hook.debug(ua, ip, string);
      //hook.debug(feed.xml());
      hook.res.writeHead(200, { 'Content-Type': 'text/xml' });
      hook.res.end(feed.xml());
    }
  });
}