test connection

api/.eslintrc.js

@@ -1,17 +1,18 @@
 module.exports = {
-    "env": {
-        "browser": true,
-        "commonjs": true,
-        "es6": true
-    },
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "parserOptions": {
-        "ecmaVersion": 2018
-    },
-    "rules": {
-    }
-};
+  env: {
+    browser: false,
+    commonjs: true,
+    es6: true,
+  },
+  extends: ['eslint:recommended', 'node'],
+  globals: {
+    Atomics: 'readonly',
+    SharedArrayBuffer: 'readonly',
+  },
+  parserOptions: {
+    ecmaVersion: 2018,
+  },
+  rules: {
+    'no-unused-vars': 'warn',
+  },
+};

api/package.json

@@ -4,13 +4,17 @@
   "private": true,
   "dependencies": {
     "axios": "^0.19.0",
+    "body-parser": "^1.19.0",
     "cors": "^2.8.5",
     "cross-env": "^6.0.3",
     "eslint": "^6.8.0",
-    "express": "^4.17.1"
+    "express": "^4.17.1",
+    "mssql": "^6.0.1"
   },
   "scripts": {
-    "start": "node src/index.js"
+    "start": "nodemon src/index.js"
   },
-  "devDependencies": {}
+  "devDependencies": {
+    "nodemon": "^2.0.2"
+  }
 }

api/src/connectProcess.js

@@ -0,0 +1,13 @@
+const mssql = require('mssql');
+
+process.on('message', async connection => {
+  const { server, port, user, password } = connection;
+  try {
+    const pool = await mssql.connect({ server, port, user, password });
+    const resp = await pool.request().query('SELECT @@VERSION AS version');
+    const { version } = resp.recordset[0];
+    process.send({ version });
+  } catch (e) {
+    process.send({ error: e.message });
+  }
+});

api/src/connection.js

@@ -0,0 +1,23 @@
+const express = require('express');
+const router = express.Router();
+const { fork } = require('child_process');
+
+router.post('/test', async (req, res) => {
+  const subprocess = fork(`${__dirname}/connectProcess.js`);
+  subprocess.send(req.body);
+  subprocess.on('message', resp => res.json(resp));
+
+  //   const { server, port, user, password } = req.body;
+  //   let pool;
+  //   try {
+  //     pool = await mssql.connect({ server, port, user, password });
+  //     const resp = await pool.request().query('SELECT @@VERSION AS version');
+  //     const { version } = resp.recordset[0];
+  //     res.json({ version });
+  //   } catch (e) {
+  //     res.json({ error: e.message });
+  //   }
+  //   if (pool) await pool.close();
+});
+
+module.exports = router;

api/src/index.js

@@ -1,12 +1,16 @@
-const express = require("express");
-const cors = require("cors");
+const express = require('express');
+const  bodyParser = require('body-parser');
+const cors = require('cors');
+const connection = require('./connection');
 const app = express();
 
 app.use(cors());
+app.use(bodyParser.json());
 
-app.get("/", function(req, res) {
-  //  res.json({msg: 'This is CORS-enabled for all origins!'})
-  res.send("Hello World");
+app.get('/', (req, res) => {
+  res.send('DbGate API');
 });
 
+app.use('/connection', connection);
+
 app.listen(3000);

web/src/App.js

@@ -1,12 +1,9 @@
 import React from "react";
-import useFetch from "./useFetch";
 import "./index.css";
 import Screen from "./Screen";
 import {CurrentWidgetProvider} from "./widgets/useCurrentWidget";
 
 function App() {
-  const resp = useFetch("http://localhost:3000", {});
-  console.log("FETCH data", resp.data);
   return (
     <CurrentWidgetProvider>
       <Screen />

web/src/modals/ConnectionModal.js

@@ -1,4 +1,5 @@
 import React from 'react';
+import axios from 'axios';
 import ModalBase from './ModalBase';
 import { FormRow, FormLabel, FormValue, FormTextField, FormSubmit } from '../utility/forms';
 import { TextField } from '../utility/inputs';
@@ -6,9 +7,16 @@ import { Formik, Form } from 'formik';
 // import FormikForm from '../utility/FormikForm';
 
 export default function ConnectionModal({ modalState }) {
-  const handleSubmit = values => {
-    console.log(values);
-    modalState.close();
+  const [sqlConnectResult, setSqlConnectResult] = React.useState('Not connected');
+
+  const handleSubmit = async values => {
+    const resp = await axios.post('http://localhost:3000/connection/test', values);
+    console.log('resp.data', resp.data);
+    const { error, version } = resp.data;
+
+    setSqlConnectResult(error || version);
+
+    // modalState.close();
   };
   return (
     <ModalBase modalState={modalState}>
@@ -24,6 +32,7 @@ export default function ConnectionModal({ modalState }) {
           <FormSubmit />
         </Form>
       </Formik>
+      <div>Connect result: {sqlConnectResult}</div>
     </ModalBase>
   );
 }