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var PostsDAO = require('../posts').PostsDAO
, sanitize = require('validator').sanitize; // Helper to sanitize form input
/* The ContentHandler must be constructed with a connected db */
function ContentHandler (db) {
"use strict";
var posts = new PostsDAO(db);
this.displayMainPage = function(req, res, next) {
"use strict";
posts.getPosts(10, function(err, results) {
"use strict";
if (err) return next(err);
return res.render('blog_template', {
title: 'blog homepage',
username: req.username,
myposts: results
});
});
}
this.displayMainPageByTag = function(req, res, next) {
"use strict";
var tag = req.params.tag;
posts.getPostsByTag(tag, 10, function(err, results) {
"use strict";
if (err) return next(err);
return res.render('blog_template', {
title: 'blog homepage',
username: req.username,
myposts: results
});
});
}
this.displayPostByPermalink = function(req, res, next) {
"use strict";
var permalink = req.params.permalink;
posts.getPostByPermalink(permalink, function(err, post) {
"use strict";
if (err) return next(err);
if (!post) return res.redirect("/post_not_found");
// init comment form fields for additional comment
var comment = {'name': req.username, 'body': "", 'email': ""}
return res.render('entry_template', {
title: 'blog post',
username: req.username,
post: post,
comment: comment,
errors: ""
});
});
}
this.handleNewComment = function(req, res, next) {
"use strict";
var name = req.body.commentName;
var email = req.body.commentEmail;
var body = req.body.commentBody;
var permalink = req.body.permalink;
// Override the comment with our actual user name if found
if (req.username) {
name = req.username;
}
if (!name || !body) {
// user did not fill in enough information
posts.getPostByPermalink(permalink, function(err, post) {
"use strict";
if (err) return next(err);
if (!post) return res.redirect("/post_not_found");
// init comment form fields for additional comment
var comment = {'name': name, 'body': "", 'email': ""}
var errors = "Post must contain your name and an actual comment."
return res.render('entry_template', {
title: 'blog post',
username: req.username,
post: post,
comment: comment,
errors: errors
});
});
return;
}
// even if there is no logged in user, we can still post a comment
posts.addComment(permalink, name, email, body, function(err, updated) {
"use strict";
if (err) return next(err);
if (updated == 0) return res.redirect("/post_not_found");
return res.redirect("/post/" + permalink);
});
}
this.displayPostNotFound = function(req, res, next) {
"use strict";
return res.send('Sorry, post not found', 404);
}
this.displayNewPostPage = function(req, res, next) {
"use strict";
if (!req.username) return res.redirect("/login");
return res.render('newpost_template', {
subject: "",
body: "",
errors: "",
tags: "",
username: req.username
});
}
function extract_tags(tags) {
"use strict";
var cleaned = [];
var tags_array = tags.split(',');
for (var i = 0; i < tags_array.length; i++) {
if ((cleaned.indexOf(tags_array[i]) == -1) && tags_array[i] != "") {
cleaned.push(tags_array[i].replace(/\s/g,''));
}
}
return cleaned
}
this.handleNewPost = function(req, res, next) {
"use strict";
var title = req.body.subject
var post = req.body.body
var tags = req.body.tags
if (!req.username) return res.redirect("/signup");
if (!title || !post) {
var errors = "Post must contain a title and blog entry";
return res.render("newpost_template", {subject:title, username:req.username, body:post, tags:tags, errors:errors});
}
var tags_array = extract_tags(tags)
// looks like a good entry, insert it escaped
var escaped_post = sanitize(post).escape();
// substitute some <br> for the paragraph breaks
var formatted_post = escaped_post.replace(/\r?\n/g,'<br>');
posts.insertEntry(title, formatted_post, tags_array, req.username, function(err, permalink) {
"use strict";
if (err) return next(err);
// now redirect to the blog permalink
return res.redirect("/post/" + permalink)
});
}
this.handleLike = function(req, res, next) {
"use strict";
var permalink = req.body.permalink;
permalink = sanitize(permalink).escape();
var comment_ordinal = req.body.comment_ordinal;
posts.getPostByPermalink(permalink, function(err, post) {
"use strict";
if (err) return next(err);
if (!post) return res.redirect("/post_not_found");
// it all looks good. increment the ordinal
posts.incrementLikes(permalink, comment_ordinal, function(err, post) {
"use strict";
if (err) return next(err);
// now redirect to the blog permalink
return res.redirect("/post/" + permalink)
});
});
}
}
module.exports = ContentHandler;
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