Merge pull request #141 from agiledev-students-fall2023/sprint/2/spik…

…e/132/setup-backend

setup and configured backend

back-end/.env

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+FRONTEND_URL = 'http://localhost:3000'
+FRONTEND_PORT = 3000
+
+BACKEND_URL = 'http://localhost:5000'
+BACKEND_PORT = 5000
+

back-end/.eslintrc.cjs

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+module.exports = {
+  env: {
+    browser: true,
+    es2021: true,
+    node: true
+  },
+  extends: 'standard',
+  overrides: [
+    {
+      env: {
+        node: true
+      },
+      files: [
+        '.eslintrc.{js,cjs}'
+      ],
+      parserOptions: {
+        sourceType: 'script'
+      }
+    }
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module'
+  },
+  rules: {
+    'semi': [
+      'error',
+      'always'
+    ],
+    'no-var': [
+      'error',
+    ],
+    'prefer-const': ['warn', {
+      'destructuring': 'any',
+      'ignoreReadBeforeAssign': false
+    }],
+    'curly': ['warn'],
+    'eqeqeq': ['error'],
+    'no-multi-spaces': ['warn'],
+    'no-lone-blocks': ['error'],
+    'no-self-compare': ['error'],
+    'no-unused-expressions': ['error'],
+    'no-useless-call': ['error'],
+    'no-use-before-define': ['warn'],
+
+    'camelcase': ['warn', { properties: 'never' }],
+    'func-call-spacing': ['off'],
+    'no-lonely-if': ['off'],
+    'array-bracket-spacing': ['warn'],
+
+    'no-console': ['off'],
+    "space-before-function-paren": ["off"],
+    "quotes": ["off"],
+    "indent": "off"
+  }
+}

back-end/app.js

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+// IMPORTS
+import express from "express"; // ESM import style!
+import morgan from "morgan";
+import cors from "cors";
+import url from 'url';
+import path from 'path';
+// import multer from "multer"; - configure when required
+
+const app = express(); // instantiate an Express object
+
+// MIDDLEWARES
+
+// enable CORS - to allow requests from React frontend to reach the Express backend
+app.use(cors());
+
+// Later during deployment:
+// const corsOptions = {
+//     origin: 'http://localhost:3000', // allow only the React frontend to connect
+//     methods: 'GET,HEAD,PUT,PATCH,POST,DELETE',
+//     credentials: true, // allow session cookie from browser to pass through
+//     optionsSuccessStatus: 200,
+// };
+// app.use(cors(corsOptions));
+
+// serve static files from the public folders
+const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
+app.use(express.static(path.join(__dirname, 'public')));
+
+// parse JSON in the request body
+app.use(express.json());
+
+// parse urlencoded data in the request body
+app.use(express.urlencoded({ extended: true }));
+
+// log HTTP requests
+app.use(morgan("dev"));
+
+// ROUTE HANDLERS
+
+// testing function
+app.get("/", (req, res) => {
+    res.send("Hello!");
+});
+
+// testing cross origin requests - login username and password
+app.post("/api/student/login", (req, res) => {
+    console.log(req.body);
+    res.send("Hello!1");
+});
+
+// export the express app we created to make it available to other modules
+export default app;