70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
var fs = require('fs'); // Filesystem
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var express = require('express'); // Express
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var bodyParser = require('body-parser'); // Data conversion, JSON parsing
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// Set up Express
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var app = express();
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app.use(express.static("./")); // Serve static files from root
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app.use(express.json()); // Parse JSON in requests
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// app.use("/", (req, res, next) => // Finally send a 404 page
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// {
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// res.status(404).sendFile("404.html", {"root": "./"});
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// });
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// Root route, respond with with index.html
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app.get("/", function(req, res) {
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res.sendFile("./index.html");
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});
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// Posts route, return posts.json
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app.get("/posts", function(req, res) {
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res.json(JSON.parse(fs.readFileSync('./data/posts.json')));
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});
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// Posts route, digest received post
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app.post("/posts", function(req, res) {
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var postsFile = fs.readFileSync('./data/posts.json');
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var posts = JSON.parse(postsFile);
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var incomingData = req.body;
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if (validatePost(incomingData))
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{
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posts.unshift(incomingData);
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}
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else
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{
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res.status(400).json({"error":"Failed to validate post"});
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return;
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}
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fs.writeFile('./data/posts.json', JSON.stringify(posts), (e) => {
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if (e)
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{
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res.sendStatus(500);
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throw e;
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}
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});
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res.sendStatus(204);
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});
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// Start listening
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app.listen(8080, function (){
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console.log("Listening on port 8080");
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});
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function validatePost(post)
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{
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try
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{
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// Check types of each expected property and assume they're there
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return (typeof post.title === "string" && typeof post.author === "string" && typeof post.date === "number" && Array.isArray(post.tags) && typeof post.content === "string");
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}
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catch (e)
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{
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// Object clearly isn't what we're expecting
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return false;
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}
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}
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