Update examples/with-javascript-express

Author: gionatamettifogo

examples/with-javascript-express/.env.example

@@ -1,2 +1,2 @@
-# connection string for chinook.db on sqlitecloud.io
-CHINOOK_URL="sqlitecloud://user:password@host.sqlite.cloud:8860/chinook.db"
+# connection string for your database node on sqlitecloud.io
+DATABASE_URL="sqlitecloud://user:password@host.sqlite.cloud:8860"

examples/with-javascript-express/README.md

@@ -1,18 +1,12 @@
 ## Getting Started
 
-First, run the development server:
+This example shows how to use @sqlitecloud/drivers in a simple Javascript express http server.
+
+To run the example:
 
 ```bash
+npm install
 npm run start
 ```
 
-Open [http://localhost:3000/api/hello](http://localhost:3000) with your browser to see the result.
-
-You can start editing the API route by modifying `routes/index.js`.
-
-## Learn More
-
-To learn more about Next.js, take a look at the following resources:
-
-- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
-- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+Open [http://localhost:3000/](http://localhost:3000/) with your browser to see the result.

examples/with-javascript-express/app.js

@@ -1,31 +1,28 @@
-var createError = require('http-errors')
-var express = require('express')
-var path = require('path')
+//
+// Using @sqlitecloud/drivers inside an Express app with Javascript
+//
 
-var tracksRouter = require('./routes/index')
+var sqlitecloud = require('@sqlitecloud/drivers')
+require('dotenv').config()
+var DATABASE_URL = process.env.DATABASE_URL
+console.assert(DATABASE_URL, 'DATABASE_URL environment variable not set in .env')
 
+var express = require('express')
+var http = require('http')
 var app = express()
-
 app.use(express.json())
-app.use(express.urlencoded({ extended: false }))
 
-app.use('/', tracksRouter)
-app.use('/api/hello', tracksRouter)
-
-// catch 404 and forward to error handler
-app.use(function (req, res, next) {
-  next(createError(404))
+/* http://localhost:3001/ returns chinook tracks as json */
+app.get('/', async function (req, res, next) {
+  var database = new sqlitecloud.Database(DATABASE_URL)
+  var tracks = await database.sql`USE DATABASE chinook.sqlite; SELECT * FROM tracks LIMIT 20;`
+  res.send({ tracks })
 })
 
-// error handler
-app.use(function (err, req, res, next) {
-  // set locals, only providing error in development
-  res.locals.message = err.message
-  res.locals.error = req.app.get('env') === 'development' ? err : {}
-
-  // render the error page
-  res.status(err.status || 500)
-  res.render('error')
+const port = process.env.PORT || 3000
+var server = http.createServer(app)
+server.listen(port, () => {
+  console.log(`Server is running on http://localhost:${port}/`)
 })
 
 module.exports = app