Add CORS middleware and user database schema

- Implemented CORS middleware in the project to handle cross-origin requests. - Added necessary files for the CORS package including README, LICENSE, and history documentation. - Created a SQL schema for the users table with appropriate fields and constraints. - Inserted mock data into the users table for testing purposes.
2025-07-21 17:38:25 +02:00
parent 46fa608a47
commit e4bceb8258
24 changed files with 1644 additions and 29 deletions
--- a/backend/.env
+++ b/backend/.env
@@ -0,0 +1,4 @@
+DB_HOST=mysql
+DB_USER=root
+DB_PASSWORD=D7Ze0lwV9hMrNQHdz1Q8yi0MIQuOO8
+DB_NAME=bikelane
--- a/backend/database.js
+++ b/backend/database.js
@@ -0,0 +1,142 @@
+import mysql from "mysql2";
+import dotenv from "dotenv";
+import { error } from "console";
+dotenv.config();
+
+// Create a MySQL connection pool using environment variables for configuration
+const pool = mysql
+  .createPool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_NAME,
+  })
+  .promise();
+
+// Function to authenticate a user by username and password
+export async function loginUser(username, password) {
+  // Query the users table for a matching username and password
+  const [result] = await pool.query(
+    "SELECT * FROM users WHERE username = ? AND password = ?",
+    [username, password]
+  );
+
+  // If a user is found, return success and user data
+  if (result.length > 0) {
+    console.log("User found: ", result[0].username, " ", result[0].id);
+    return { success: true, user: result[0] };
+  } else {
+    // If no user is found, return failure message
+    console.error(`Invalid username or password!; ${result[0]}`);
+    return { success: false, message: "Invalid username or password" };
+  }
+}
+
+// Function to create a new user in the database
+export async function createUser(
+  username,
+  first_name,
+  last_name,
+  password,
+  email
+) {
+  try {
+    // Insert a new user record into the users table
+    const [result] = await pool.query(
+      "INSERT INTO users (username, first_name, last_name, password, email) VALUES (?, ?, ?, ?, ?)",
+      [username, first_name, last_name, password, email]
+    );
+
+    console.log("User created successfully!");
+    return { success: true, message: "User created successfully!" };
+  } catch (error) {
+    // Handle errors during user creation
+    console.log("Error creating user: ", error);
+    return { success: false, message: "Error creating user!" };
+  }
+}
+
+// Function to update an existing user's information
+export async function updateUser(
+  username,
+  first_name,
+  last_name,
+  password,
+  email
+) {
+  try {
+    // Update user details based on username
+    const [result] = await pool.query(
+      "UPDATE users SET first_name = ?, last_name = ?, password = ?, email = ? WHERE username = ?",
+      [first_name, last_name, password, email, username]
+    );
+    const resultOfquery = result.affectedRows;
+
+    // If a user was updated, return success
+    if (resultOfquery > 0) {
+      console.log("User updated successfully!");
+      return {
+        success: true,
+        message: "User updated successfully!",
+        resultOfquery: result,
+      };
+    }
+
+    // If no user was updated, return failure
+    if (resultOfquery === 0) {
+      console.log("Error updating user!");
+      return {
+        success: false,
+        message: "Error updating user!",
+        resultOfquery: null,
+      };
+    }
+  } catch (err) {}
+}
+
+// Function to delete a user from the database
+export async function deleteUser(
+  username,
+  first_name,
+  last_name,
+  password,
+  email
+) {
+  try {
+    // Delete user based on username and password
+    const [result] = await pool.query(
+      "DELETE FROM users WHERE username = ?  AND password = ?",
+      [username, password]
+    );
+    const resultOfquery = result.affectedRows;
+
+    // If a user was deleted, return success
+    if (resultOfquery > 0) {
+      console.log("User deleted successfully!");
+      return {
+        success: true,
+        message: "User deleted successfully!",
+        resultOfquery: result,
+      };
+    }
+
+    // If no user was deleted, return failure
+    if (resultOfquery === 0) {
+      console.log("Error deleting user!");
+      return {
+        success: false,
+        message: "Error deleting user!",
+        resultOfquery: null,
+      };
+    }
+  } catch (err) {}
+}
+
+export async function getAllUsers() {
+  try {
+    const [data] = await pool.query("SELECT * FROM users;");
+    return { result: data, success: true };
+  } catch (err) {
+    return { result: err, success: false };
+  }
+}
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -9,8 +9,11 @@
      "version": "1.0.0",
      "license": "ISC",
      "dependencies": {
+        "cors": "^2.8.5",
+        "dotenv": "^17.2.0",
        "ejs": "^3.1.10",
-        "express": "^5.1.0"
+        "express": "^5.1.0",
+        "mysql2": "^3.14.2"
      }
    },
    "node_modules/accepts": {
@@ -47,6 +50,15 @@
      "integrity": "sha512-htCUDlxyyCLMgaM3xXg0C0LW2xqfuQ6p05pCEIsXuyQ+a1koYKTuBMzRNwmybfLgvJDMd0r1LTn4+E0Ti6C2AA==",
      "license": "MIT"
    },
+    "node_modules/aws-ssl-profiles": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/aws-ssl-profiles/-/aws-ssl-profiles-1.1.2.tgz",
+      "integrity": "sha512-NZKeq9AfyQvEeNlN0zSYAaWrmBffJh3IELMZfRpJVWgrpEbtEpnjvzqBPf+mxoI287JohRDoa+/nsfqqiZmF6g==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
    "node_modules/balanced-match": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -200,6 +212,19 @@
        "node": ">=6.6.0"
      }
    },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "license": "MIT",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
    "node_modules/debug": {
      "version": "4.4.1",
      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.1.tgz",
@@ -217,6 +242,15 @@
        }
      }
    },
+    "node_modules/denque": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/denque/-/denque-2.1.0.tgz",
+      "integrity": "sha512-HVQE3AAb/pxF8fQAoiqpvg9i3evqug3hoiwakOyZAwJm+6vZehbkYXZ0l4JxS+I3QxM97v5aaRNhj8v5oBhekw==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.10"
+      }
+    },
    "node_modules/depd": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
@@ -226,6 +260,18 @@
        "node": ">= 0.8"
      }
    },
+    "node_modules/dotenv": {
+      "version": "17.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.2.0.tgz",
+      "integrity": "sha512-Q4sgBT60gzd0BB0lSyYD3xM4YxrXA9y4uBDof1JNYGzOXrQdQ6yX+7XIAqoFOGQFOTK1D3Hts5OllpxMDZFONQ==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://dotenvx.com"
+      }
+    },
    "node_modules/dunder-proto": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz",
@@ -431,6 +477,15 @@
        "url": "https://github.com/sponsors/ljharb"
      }
    },
+    "node_modules/generate-function": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/generate-function/-/generate-function-2.3.1.tgz",
+      "integrity": "sha512-eeB5GfMNeevm/GRYq20ShmsaGcmI81kIX2K9XQx5miC8KdHaC6Jm0qQ8ZNeGOi7wYB8OsdxKs+Y2oVuTFuVwKQ==",
+      "license": "MIT",
+      "dependencies": {
+        "is-property": "^1.0.2"
+      }
+    },
    "node_modules/get-intrinsic": {
      "version": "1.3.0",
      "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz",
@@ -571,6 +626,12 @@
      "integrity": "sha512-hvpoI6korhJMnej285dSg6nu1+e6uxs7zG3BYAm5byqDsgJNWwxzM6z6iZiAgQR4TJ30JmBTOwqZUw3WlyH3AQ==",
      "license": "MIT"
    },
+    "node_modules/is-property": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/is-property/-/is-property-1.0.2.tgz",
+      "integrity": "sha512-Ks/IoX00TtClbGQr4TWXemAnktAQvYB7HzcCxDGqEZU6oCmb2INHuOoKxbtR+HFkmYWBKv/dOZtGRiAjDhj92g==",
+      "license": "MIT"
+    },
    "node_modules/jake": {
      "version": "10.9.2",
      "resolved": "https://registry.npmjs.org/jake/-/jake-10.9.2.tgz",
@@ -589,6 +650,36 @@
        "node": ">=10"
      }
    },
+    "node_modules/long": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",
+      "integrity": "sha512-mNAgZ1GmyNhD7AuqnTG3/VQ26o760+ZYBPKjPvugO8+nLbYfX6TVpJPseBvopbdY+qpZ/lKUnmEc1LeZYS3QAA==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/lru-cache": {
+      "version": "7.18.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-7.18.3.tgz",
+      "integrity": "sha512-jumlc0BIUrS3qJGgIkWZsyfAM7NCWiBcCDhnd+3NNM5KbBmLTgHVfWBcg6W+rLUsIpzpERPsvwUP7CckAQSOoA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/lru.min": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/lru.min/-/lru.min-1.1.2.tgz",
+      "integrity": "sha512-Nv9KddBcQSlQopmBHXSsZVY5xsdlZkdH/Iey0BlcBYggMd4two7cZnKOK9vmy3nY0O5RGH99z1PCeTpPqszUYg==",
+      "license": "MIT",
+      "engines": {
+        "bun": ">=1.0.0",
+        "deno": ">=1.30.0",
+        "node": ">=8.0.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wellwelwel"
+      }
+    },
    "node_modules/math-intrinsics": {
      "version": "1.1.0",
      "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -658,6 +749,38 @@
      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
      "license": "MIT"
    },
+    "node_modules/mysql2": {
+      "version": "3.14.2",
+      "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-3.14.2.tgz",
+      "integrity": "sha512-YD6mZMeoypmheHT6b2BrVmQFvouEpRICuvPIREulx2OvP1xAxxeqkMQqZSTBefv0PiOBKGYFa2zQtY+gf/4eQw==",
+      "license": "MIT",
+      "dependencies": {
+        "aws-ssl-profiles": "^1.1.1",
+        "denque": "^2.1.0",
+        "generate-function": "^2.3.1",
+        "iconv-lite": "^0.6.3",
+        "long": "^5.2.1",
+        "lru.min": "^1.0.0",
+        "named-placeholders": "^1.1.3",
+        "seq-queue": "^0.0.5",
+        "sqlstring": "^2.3.2"
+      },
+      "engines": {
+        "node": ">= 8.0"
+      }
+    },
+    "node_modules/named-placeholders": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/named-placeholders/-/named-placeholders-1.1.3.tgz",
+      "integrity": "sha512-eLoBxg6wE/rZkJPhU/xRX1WTpkFEwDJEN96oxFrTsqBdbT5ec295Q+CoHrL9IT0DipqKhmGcaZmwOt8OON5x1w==",
+      "license": "MIT",
+      "dependencies": {
+        "lru-cache": "^7.14.1"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
    "node_modules/negotiator": {
      "version": "1.0.0",
      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-1.0.0.tgz",
@@ -667,6 +790,15 @@
        "node": ">= 0.6"
      }
    },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
    "node_modules/object-inspect": {
      "version": "1.13.4",
      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.4.tgz",
@@ -834,6 +966,11 @@
        "node": ">= 18"
      }
    },
+    "node_modules/seq-queue": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/seq-queue/-/seq-queue-0.0.5.tgz",
+      "integrity": "sha512-hr3Wtp/GZIc/6DAGPDcV4/9WoZhjrkXsi5B/07QgX8tsdc6ilr7BFM6PM6rbdAX1kFSDYeZGLipIZZKyQP0O5Q=="
+    },
    "node_modules/serve-static": {
      "version": "2.2.0",
      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-2.2.0.tgz",
@@ -927,6 +1064,15 @@
        "url": "https://github.com/sponsors/ljharb"
      }
    },
+    "node_modules/sqlstring": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/sqlstring/-/sqlstring-2.3.3.tgz",
+      "integrity": "sha512-qC9iz2FlN7DQl3+wjwn3802RTyjCx7sDvfQEXchwa6CWOx07/WVfh91gBmQ9fahw8snwGEWU3xGzOt4tFyHLxg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
    "node_modules/statuses": {
      "version": "2.0.2",
      "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.2.tgz",
--- a/backend/package.json
+++ b/backend/package.json
@@ -12,7 +12,10 @@
  "license": "ISC",
  "description": "",
  "dependencies": {
+    "cors": "^2.8.5",
+    "dotenv": "^17.2.0",
    "ejs": "^3.1.10",
-    "express": "^5.1.0"
+    "express": "^5.1.0",
+    "mysql2": "^3.14.2"
  }
 }
--- a/backend/server.js
+++ b/backend/server.js
@@ -1,15 +1,46 @@
 //statics
 import express from "express";
+import cors from "cors";
 const app = express();
 const port = 5002;
+import {
+  loginUser,
+  createUser,
+  updateUser,
+  deleteUser,
+  getAllUsers,
+} from "./database.js";

 //view engine ejs
 app.set("view engine", "ejs");

+app.use(express.json());
+
+app.use(cors());
+
 app.get("/", (req, res) => {
  res.render("index.ejs");
 });

+app.post("/api/login", async (req, res) => {
+  console.log(req.body);
+
+  loginUser(req.body.username, req.body.password)
+    .then((result) => {
+      if (result.success) {
+        res.status(200).json(result);
+      } else {
+        res.status(401).json(result);
+      }
+    })
+    .catch((err) => {
+      console.error("Error logging in:", err);
+      res
+        .status(500)
+        .json({ success: false, message: "Internal server error" });
+    });
+});
+
 app.listen(port, () => {
  console.log(`Server is running at http://localhost:${port}`);
 });