Migrated to knex

src/server.js

@@ -1,8 +1,11 @@
 const fastify = require('fastify')({ logger: true })
-const level = require('level')
 const { nanoid } = require('nanoid')
-
-const db = level('./db', { valueEncoding: 'json' })
+const knex = require('knex')({
+    client: 'sqlite3',
+    connection: {
+        filename: "./dev.sqlite3"
+    }
+});
 
 //Basic home route
 fastify.get('/', async (request, reply) => {
@@ -20,14 +23,19 @@ fastify.get('/yt/:id', async (req, res) => {
 })
 
 //Normal shorturls
-fastify.get('/:id', async (req, res) => {
-    try {
-        const target = await db.get(req.params.id);
-        res.redirect(302, target);
-    } catch (error) {
-        res.statusCode = 404;
+fastify.get('/:shortcode', async (req, res) => {
+    const shortcode = req.params.shortcode;
+    if (!shortcode) {
         return 404;
     }
+    const target = await knex.select('target')
+        .from('urls')
+        .where('shortcode', '=', shortcode)
+        .limit(1);
+    if (!target[0]) {
+        return 404
+    }
+    res.redirect(302, target[0].target)
 })
 
 //Create new urls
@@ -48,34 +56,39 @@ fastify.post('/new', { newUrlSchema }, async (req, res) => {
         res.statusCode = 400;
         return "Missing target";
     }
+
     if (!shortcode) {
+        const exists = await knex.select('shortcode')
+            .from('urls')
+            .where('target', '=', target)
+            .limit(1);
+        if (exists.length != 0) {
+            shortcode = exists[0].shortcode;
+            return {
+                url: `http://localhost:3000/${shortcode}`,
+                shortcode,
+                target
+            }
+        }
         shortcode = nanoid(12);
     }
     else {
-        try {
-            const exists = await db.get(shortcode);
-            if (exists) {
-                res.statusCode = 400;
-                return "Shortcode already exists, please choose another code";
-            }
-        } catch (error) {
-            if (!error.notFound) {
-                res.statusCode = 500;
-                return "Internal Server Error."
-            }
+        const exists = await knex.select('shortcode')
+            .from('urls')
+            .where('shortcode', '=', shortcode)
+            .limit(1);
+        if (exists.length != 0) {
+            res.statusCode = 400;
+            return "Shortcode already exists, please choose another code";
         }
     }
-    try {
-        await db.put(shortcode, target);
-    } catch (error) {
-        res.statusCode = 500;
-        return "DB ERROR";
-    }
+    await knex('urls').insert({target, shortcode});
+
     return {
+        url: `http://localhost:3000${shortcode}`,
         shortcode,
-        url: `http://localhost:3000/${shortcode}`,
         target
-    };
+    }
 })
 
 // Run the server!