606 lines
16 KiB
JavaScript
Executable File
606 lines
16 KiB
JavaScript
Executable File
var Rx = require('rx'),
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nodemailer = require('nodemailer'),
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assign = require('object.assign'),
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sanitizeHtml = require('sanitize-html'),
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moment = require('moment'),
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mongodb = require('mongodb'),
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debug = require('debug')('freecc:cntr:story'),
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utils = require('../utils'),
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observeMethod = require('../utils/rx').observeMethod,
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saveUser = require('../utils/rx').saveUser,
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saveInstance = require('../utils/rx').saveInstance,
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MongoClient = mongodb.MongoClient,
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secrets = require('../../config/secrets');
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var foundationDate = 1413298800000;
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var time48Hours = 172800000;
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var unDasherize = utils.unDasherize;
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var dasherize = utils.dasherize;
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var getURLTitle = utils.getURLTitle;
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var transporter = nodemailer.createTransport({
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service: 'Mandrill',
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auth: {
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user: secrets.mandrill.user,
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pass: secrets.mandrill.password
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}
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});
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function sendMailWhillyNilly(mailOptions) {
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transporter.sendMail(mailOptions, function(err) {
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if (err) {
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console.log('err sending mail whilly nilly', err);
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console.log('logging err but not carring');
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}
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});
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}
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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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function cleanData(data, opts) {
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var options = assign(
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{},
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{
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allowedTags: [],
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allowedAttributes: []
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},
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opts || {}
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);
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return sanitizeHtml(data, options).replace(/";/g, '"');
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}
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module.exports = function(app) {
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var router = app.loopback.Router();
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var User = app.models.User;
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var findUserById = observeMethod(User, 'findById');
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var findOneUser = observeMethod(User, 'findOne');
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var Story = app.models.Story;
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var findStory = observeMethod(Story, 'find');
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var findOneStory = observeMethod(Story, 'findOne');
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var findStoryById = observeMethod(Story, 'findById');
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var countStories = observeMethod(Story, 'count');
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var Comment = app.models.Comment;
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var findCommentById = observeMethod(Comment, 'findById');
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router.get('/stories/hotStories', hotJSON);
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router.get('/stories/comments/:id', comments);
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router.post('/stories/comment/', commentSubmit);
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router.post('/stories/comment/:id/comment', commentOnCommentSubmit);
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router.put('/stories/comment/:id/edit', commentEdit);
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router.get('/stories/submit', submitNew);
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router.get('/stories/submit/new-story', preSubmit);
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router.post('/stories/preliminary', newStory);
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router.post('/stories/', storySubmission);
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router.get('/news/', hot);
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router.post('/stories/search', getStories);
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router.get('/news/:storyName', returnIndividualStory);
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router.post('/stories/upvote/', upvote);
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router.get('/stories/:storyName', redirectToNews);
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app.use(router);
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function redirectToNews(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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var query = {
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order: 'timePosted DESC',
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limit: 1000
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};
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findStory(query).subscribe(
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function(stories) {
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var sliceVal = stories.length >= 100 ? 100 : stories.length;
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var data = stories.sort(sortByRank).slice(0, sliceVal);
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res.json(data);
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},
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next
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);
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}
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function hot(req, res) {
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return res.render('stories/index', {
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title: 'Hot stories currently trending on Camper News',
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page: 'hot'
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});
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}
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function submitNew(req, res) {
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return res.render('stories/index', {
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title: 'Submit a new story to Camper News',
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page: 'submit'
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});
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}
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function preSubmit(req, res) {
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var data = req.query;
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var cleanedData = cleanData(data.url);
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if (data.url.replace(/&/g, '&') !== cleanedData) {
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req.flash('errors', {
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msg: 'The data for this post is malformed'
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});
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return res.render('stories/index', {
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page: 'stories/submit'
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});
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}
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var title = data.title || '';
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var image = data.image || '';
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var description = data.description || '';
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return res.render('stories/index', {
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title: 'Confirm your Camper News story submission',
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page: 'storySubmission',
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storyURL: data.url,
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storyTitle: title,
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storyImage: image,
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storyMetaDescription: description
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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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var username = req.user ? req.user.username : '';
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// true if any of votes are made by user
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var userVoted = story.upVotes.some(function(upvote) {
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return upvote.upVotedByUsername === username;
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});
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res.render('stories/index', {
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title: story.headline,
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link: story.link,
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originalStoryLink: dashedName,
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originalStoryAuthorEmail: story.author.email || '',
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author: story.author,
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description: story.description,
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rank: story.upVotes.length,
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upVotes: story.upVotes,
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comments: story.comments,
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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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page: 'show',
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storyMetaDescription: story.metaDescription,
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hasUserVoted: userVoted
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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 getStories(req, res, next) {
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MongoClient.connect(secrets.db, function(err, database) {
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if (err) {
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return next(err);
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}
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database.collection('stories').find({
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'$text': {
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'$search': req.body.data ? req.body.data.searchValue : ''
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}
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}, {
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headline: 1,
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timePosted: 1,
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link: 1,
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description: 1,
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rank: 1,
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upVotes: 1,
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author: 1,
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comments: 1,
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image: 1,
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storyLink: 1,
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metaDescription: 1,
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textScore: {
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$meta: 'textScore'
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}
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}, {
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sort: {
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textScore: {
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$meta: 'textScore'
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}
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}
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}).toArray(function(err, items) {
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if (err) {
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return next(err);
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}
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if (items !== null && items.length !== 0) {
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return res.json(items);
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}
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return res.sendStatus(404);
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});
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});
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}
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function upvote(req, res, next) {
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var id = req.body.data.id;
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var story$ = findStoryById(id).shareReplay();
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story$.flatMap(function(story) {
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// find story author
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return findUserById(story.author.userId);
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})
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.flatMap(function(user) {
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// if user deletes account then this will not exist
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if (user) {
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user.progressTimestamps.push(Date.now());
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}
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return saveUser(user);
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})
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.flatMap(function() {
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req.user.progressTimestamps.push(Date.now());
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return saveUser(req.user);
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})
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.flatMap(function() {
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return story$;
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})
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.flatMap(function(story) {
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debug('upvoting');
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story.rank += 1;
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story.upVotes.push({
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upVotedBy: req.user.id,
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upVotedByUsername: req.user.username
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});
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return saveInstance(story);
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})
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.subscribe(
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function(story) {
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return res.send(story);
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},
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next
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);
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}
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function comments(req, res, next) {
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var id = req.params.id;
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findCommentById(id).subscribe(
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function(comment) {
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res.send(comment);
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},
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next
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);
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}
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function newStory(req, res, next) {
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if (!req.user) {
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return next(new Error('Must be logged in'));
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}
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var url = req.body.data.url;
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var cleanURL = cleanData(url);
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if (cleanURL !== url) {
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req.flash('errors', {
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msg: "The URL you submitted doesn't appear valid"
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});
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return res.json({
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alreadyPosted: true,
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storyURL: '/stories/submit'
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});
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}
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if (url.search(/^https?:\/\//g) === -1) {
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url = 'http://' + url;
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}
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findStory({ where: { link: url } })
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.map(function(stories) {
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if (stories.length) {
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return {
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alreadyPosted: true,
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storyURL: '/stories/' + stories.pop().storyLink
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};
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}
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return {
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alreadyPosted: false,
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storyURL: url
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};
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})
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.flatMap(function(data) {
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if (data.alreadyPosted) {
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return Rx.Observable.just(data);
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}
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return Rx.Observable.fromNodeCallback(getURLTitle)(data.storyURL)
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.map(function(story) {
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return {
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alreadyPosted: false,
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storyURL: data.storyURL,
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storyTitle: story.title,
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storyImage: story.image,
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storyMetaDescription: story.description
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};
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});
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})
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.subscribe(
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function(story) {
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if (story.alreadyPosted) {
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req.flash('errors', {
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msg: "Someone's already posted that link. Here's the discussion."
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});
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}
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res.json(story);
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},
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next
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);
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}
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function storySubmission(req, res, next) {
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var data = req.body.data;
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if (!req.user) {
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return next(new Error('Not authorized'));
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}
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var storyLink = data.headline
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.replace(/[^a-z0-9\s]/gi, '')
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.replace(/\s+/g, ' ')
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.toLowerCase()
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.trim();
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var link = data.link;
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if (link.search(/^https?:\/\//g) === -1) {
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link = 'http://' + link;
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}
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var query = {
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storyLink: {
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like: ('^' + storyLink + '(?: [0-9]+)?$'),
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options: 'i'
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}
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};
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var savedStory = countStories(query)
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.flatMap(function(storyCount) {
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// if duplicate storyLink add unique number
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storyLink = (storyCount === 0) ?
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storyLink :
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storyLink + ' ' + storyCount;
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var link = data.link;
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if (link.search(/^https?:\/\//g) === -1) {
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link = 'http://' + link;
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}
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var newStory = new Story({
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headline: cleanData(data.headline),
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timePosted: Date.now(),
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link: link,
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description: cleanData(data.description),
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rank: 1,
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upVotes: [({
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upVotedBy: req.user.id,
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upVotedByUsername: req.user.username
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})],
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author: {
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picture: req.user.picture,
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userId: req.user.id,
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username: req.user.username,
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email: req.user.email
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},
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comments: [],
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image: data.image,
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storyLink: storyLink,
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metaDescription: data.storyMetaDescription,
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originalStoryAuthorEmail: req.user.email
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});
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return saveInstance(newStory);
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});
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req.user.progressTimestamps.push(Date.now());
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return saveUser(req.user)
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.flatMap(savedStory)
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.subscribe(
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function(story) {
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res.json({
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storyLink: dasherize(story.storyLink)
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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 commentSubmit(req, res, next) {
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var data = req.body.data;
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if (!req.user) {
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return next(new Error('Not authorized'));
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}
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var sanitizedBody = cleanData(data.body);
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if (data.body !== sanitizedBody) {
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req.flash('errors', {
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msg: 'HTML is not allowed'
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});
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return res.send(true);
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}
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var comment = new Comment({
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associatedPost: data.associatedPost,
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originalStoryLink: data.originalStoryLink,
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originalStoryAuthorEmail: data.originalStoryAuthorEmail,
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body: sanitizedBody,
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rank: 0,
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upvotes: 0,
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author: {
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picture: req.user.picture,
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userId: req.user.id,
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username: req.user.username,
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email: req.user.email
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},
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comments: [],
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topLevel: true,
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commentOn: Date.now()
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});
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commentSave(comment, findStoryById).subscribe(
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function() {},
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next,
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function() {
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res.send(true);
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}
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);
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}
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function commentOnCommentSubmit(req, res, next) {
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var data = req.body.data;
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if (!req.user) {
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return next(new Error('Not authorized'));
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}
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var sanitizedBody = cleanData(data.body);
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if (data.body !== sanitizedBody) {
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req.flash('errors', {
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msg: 'HTML is not allowed'
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});
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return res.send(true);
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}
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var comment = new Comment({
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associatedPost: data.associatedPost,
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body: sanitizedBody,
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rank: 0,
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upvotes: 0,
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originalStoryLink: data.originalStoryLink,
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originalStoryAuthorEmail: data.originalStoryAuthorEmail,
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author: {
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picture: req.user.picture,
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userId: req.user.id,
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username: req.user.username,
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email: req.user.email
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},
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comments: [],
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topLevel: false,
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commentOn: Date.now()
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});
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commentSave(comment, findCommentById).subscribe(
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function() {},
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next,
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function() {
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res.send(true);
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}
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);
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}
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function commentEdit(req, res, next) {
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findCommentById(req.params.id)
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.doOnNext(function(comment) {
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if (!req.user && comment.author.userId !== req.user.id) {
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throw new Error('Not authorized');
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}
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})
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.flatMap(function(comment) {
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var sanitizedBody = cleanData(req.body.body);
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if (req.body.body !== sanitizedBody) {
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req.flash('errors', {
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msg: 'HTML is not allowed'
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});
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}
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comment.body = sanitizedBody;
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comment.commentOn = Date.now();
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return saveInstance(comment);
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})
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.subscribe(
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function() {
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res.send(true);
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},
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next
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);
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}
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function commentSave(comment, findContextById) {
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return saveInstance(comment)
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.flatMap(function(comment) {
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// Based on the context retrieve the parent
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// object of the comment (Story/Comment)
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return findContextById(comment.associatedPost);
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})
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.flatMap(function(associatedContext) {
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if (associatedContext) {
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associatedContext.comments.push(comment.id);
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}
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// NOTE(berks): saveInstance is safe
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// it will automatically call onNext with null and onCompleted if
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// argument is falsey or has no method save
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return saveInstance(associatedContext);
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})
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.flatMap(function(associatedContext) {
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// Find the author of the parent object
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// if no username
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var username = associatedContext && associatedContext.author ?
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associatedContext.author.username :
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null;
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var query = { where: { username: username } };
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return findOneUser(query);
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})
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// if no user is found we don't want to hit the doOnNext
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// filter here will call onCompleted without running through the following
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// steps
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.filter(function(user) {
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return !!user;
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})
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// if this is called user is guarenteed to exits
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|
// this is a side effect, hence we use do/tap observable methods
|
|
.doOnNext(function(user) {
|
|
// If the emails of both authors differ,
|
|
// only then proceed with email notification
|
|
if (
|
|
comment.author &&
|
|
comment.author.email &&
|
|
user.email &&
|
|
(comment.author.email !== user.email)
|
|
) {
|
|
sendMailWhillyNilly({
|
|
to: user.email,
|
|
from: 'Team@freecodecamp.com',
|
|
subject: comment.author.username +
|
|
' replied to your post on Camper News',
|
|
text: [
|
|
'Just a quick heads-up: ',
|
|
comment.author.username,
|
|
' replied to you on Camper News.',
|
|
'You can keep this conversation going.',
|
|
'Just head back to the discussion here: ',
|
|
'http://freecodecamp.com/stories/',
|
|
comment.originalStoryLink,
|
|
'- the Free Code Camp Volunteer Team'
|
|
].join('\n')
|
|
});
|
|
}
|
|
});
|
|
}
|
|
};
|