wat/dist/spider/github.js

Community-controlled cheat sheets for every coder.

'use strict';

var mdast = require('mdast');
var stripBadges = require('mdast-strip-badges');
var util = require('../util');

var github = {

  getPage: function getPage(searchResult, callback) {
    callback = callback || {};
    var self = this;

    var details = this.parseSearchLink(searchResult.link);
    var readmeUrl = this.getRepoReadmeUrl(details);

    function request(urls, cb) {
      var url = urls.shift();
      if (url) {
        util.fetchRemote(url, function (err, data) {
          var results = undefined;
          if (!err) {
            var md = mdast().use(stripBadges);
            results = md.process(data);
            results = self.app.cosmetician.markdownToTerminal(data, {
              lineWidth: function lineWidth() {
                return process.stdout.columns - 2;
              }
            });
            cb(undefined, results);
          } else {
            request(urls, cb);
          }
        });
      } else {
        cb('Not found.');
      }
    }

    request([readmeUrl.upper, readmeUrl.lower, readmeUrl.title, readmeUrl.out], callback);
  },

  parseSearchLink: function parseSearchLink(url) {
    var res = String(url).split('//github.com/')[1];
    var result = {};
    if (res) {
      var parts = String(res).split('/') || [];
      var owner = parts[0];
      var _name = parts[1];
      if (owner && _name) {
        result = { owner: owner, name: _name };
      }
    }
    return result;
  },

  getRepoReadmeUrl: function getRepoReadmeUrl(repo) {
    var result = undefined;
    if (repo) {
      result = {
        upper: 'https://raw.githubusercontent.com/' + repo.owner + '/' + repo.name + '/master/README.md',
        title: 'https://raw.githubusercontent.com/' + repo.owner + '/' + repo.name + '/master/Readme.md',
        lower: 'https://raw.githubusercontent.com/' + repo.owner + '/' + repo.name + '/master/readme.md',
        out: 'https://raw.githubusercontent.com/' + repo.owner + '/' + repo.name + '/master/readme.markdown'
      };
    }
    return result;
  }
};

module.exports = function (app) {
  github.app = app;
  return github;
};