129 lines
3.7 KiB
JavaScript
Executable File
129 lines
3.7 KiB
JavaScript
Executable File
import moment from 'moment';
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import { unDasherize } from '../utils';
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import { observeMethod } from '../utils/rx';
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const foundationDate = 1413298800000;
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const time48Hours = 172800000;
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function hotRank(timeValue, rank) {
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/*
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* Hotness ranking algorithm: http://amix.dk/blog/post/19588
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* tMS = postedOnDate - foundationTime;
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* Ranking...
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* f(ts, 1, rank) = log(10)z + (ts)/45000;
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*/
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var z = Math.log(rank) / Math.log(10);
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var hotness = z + (timeValue / time48Hours);
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return hotness;
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}
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function sortByRank(a, b) {
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return hotRank(b.timePosted - foundationDate, b.rank) -
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hotRank(a.timePosted - foundationDate, a.rank);
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}
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module.exports = function(app) {
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const router = app.loopback.Router();
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const Story = app.models.Story;
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const findStory = observeMethod(Story, 'find');
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const findOneStory = observeMethod(Story, 'findOne');
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const query = {
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order: 'timePosted DESC',
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limit: 1000
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};
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const storiesData$ = findStory(query)
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.map(stories => {
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const sliceVal = stories.length >= 100 ? 100 : stories.length;
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return stories.sort(sortByRank).slice(0, sliceVal);
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})
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.shareReplay();
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const redirectToNews = (req, res) => res.redirect('/news');
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const deprecated = (req, res) => res.sendStatus(410);
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router.get('/news', showNews);
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router.post('/news/userstories', deprecated);
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router.get('/news/hot', hotJSON);
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router.get('/news/feed', RSSFeed);
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router.get('/stories/hotStories', hotJSON);
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router.get('/stories/submit', redirectToNews);
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router.get('/stories/submit/new-story', redirectToNews);
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router.post('/stories/preliminary', deprecated);
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router.post('/stories/', deprecated);
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router.post('/stories/search', deprecated);
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router.get('/news/:storyName', returnIndividualStory);
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router.post('/stories/upvote/', deprecated);
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router.get('/stories/:storyName', replaceStoryWithNews);
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app.use(router);
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function showNews(req, res) {
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res.render('news/deprecated', { title: 'Camper News' });
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}
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function replaceStoryWithNews(req, res) {
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var url = req.originalUrl.replace(/^\/stories/, '/news');
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return res.redirect(url);
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}
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function hotJSON(req, res, next) {
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storiesData$.subscribe(
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stories => res.json(stories),
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next
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);
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}
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function RSSFeed(req, res, next) {
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storiesData$.subscribe(
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data => {
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res.set('Content-Type', 'text/xml');
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res.render('news/feed', {
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title: 'FreeCodeCamp Camper News RSS Feed',
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description: 'RSS Feed for FreeCodeCamp Top 100 Hot Camper News',
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url: 'http://www.freecodecamp.com/news',
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FeedPosts: data
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});
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},
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next
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);
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}
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function returnIndividualStory(req, res, next) {
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var dashedName = req.params.storyName;
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var storyName = unDasherize(dashedName);
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findOneStory({ where: { storyLink: storyName } }).subscribe(
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function(story) {
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if (!story) {
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req.flash('errors', {
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msg: "404: We couldn't find a story with that name. " +
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'Please double check the name.'
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});
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return res.redirect('/news');
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}
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var dashedNameFull = story.storyLink.toLowerCase()
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.replace(/\s+/g, ' ')
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.replace(/\s/g, '-');
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if (dashedNameFull !== dashedName) {
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return res.redirect('../stories/' + dashedNameFull);
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}
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return res.render('news/index', {
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title: story.headline || 'news',
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link: story.link,
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originalStoryLink: dashedName,
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author: story.author,
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rank: story.upVotes.length,
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id: story.id,
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timeAgo: moment(story.timePosted).fromNow(),
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image: story.image,
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storyMetaDescription: story.metaDescription
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});
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},
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next
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);
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}
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};
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