create crud api code

Author: ohdoking

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/node
+# Edit at https://www.toptal.com/developers/gitignore?templates=node
+
+### Node ###
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+
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+.cache/
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+# End of https://www.toptal.com/developers/gitignore/api/node

db.js

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+const mysql = require("mysql2");
+const dotenv = require("dotenv");
+
+dotenv.config();
+
+const connection = mysql.createConnection({
+  host: process.env.DB_HOST,
+  user: process.env.DB_USER,
+  password: process.env.DB_PASSWORD,
+  database: process.env.DB_NAME
+});
+
+// Connect to MySQL
+connection.connect((err) => {
+  if (err) {
+    console.error("Database connection failed:", err);
+    return;
+  }
+  console.log("Connected to MySQL");
+
+  // Create database if not exists
+  connection.query(
+    `CREATE DATABASE IF NOT EXISTS ${process.env.DB_NAME}`,
+    (err) => {
+      if (err) {
+        console.error("Database creation failed:", err);
+        return;
+      }
+      console.log("Database ready");
+
+      // Connect to the newly created database
+      const db = mysql.createConnection({
+        host: process.env.DB_HOST,
+        user: process.env.DB_USER,
+        password: process.env.DB_PASSWORD,
+        database: process.env.DB_NAME,
+      });
+
+      db.connect((err) => {
+        if (err) {
+          console.error("Database selection failed:", err);
+          return;
+        }
+
+        // Create table if not exists
+        db.query(
+          `CREATE TABLE IF NOT EXISTS words (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            word VARCHAR(255) NOT NULL
+          )`,
+          (err) => {
+            if (err) {
+              console.error("Table creation failed:", err);
+              return;
+            }
+            console.log("Table ready");
+          }
+        );
+      });
+    }
+  );
+});
+
+module.exports = connection;

index.js

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+require("dotenv").config();
+require("./db"); // Ensures database setup runs before starting the server
+
+const express = require("express");
+const wordsRouter = require("./routes/words");
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.use(express.json());
+
+// Health Check
+app.get("/health", (req, res) => {
+  res.json({ status: "healthy" });
+});
+
+// Word Routes
+app.use("/api/words", wordsRouter);
+
+app.listen(PORT, () => {
+    console.log(`Server running on http://localhost:${PORT}`);
+  });

models/wordModel.js

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+const pool = require("../db");
+
+const getAllWords = async () => {
+  const [rows] = await pool.promise().query("SELECT * FROM words");
+  return rows;
+};
+
+const getWordById = async (id) => {
+  const [rows] = await pool.promise().query("SELECT * FROM words WHERE id = ?", [id]);
+  return rows[0];
+};
+
+const insertWord = async (word) => {
+  const [result] = await pool.promise().query("INSERT INTO words (word) VALUES (?)", [word]);
+  return { id: result.insertId, word };
+};
+
+const updateWord = async (id, word) => {
+  await pool.promise().query("UPDATE words SET word = ? WHERE id = ?", [word, id]);
+  return getWordById(id);
+};
+
+const deleteWord = async (id) => {
+  const [result] = await pool.promise().query("DELETE FROM words WHERE id = ?", [id]);
+  return result.affectedRows > 0;
+};
+
+module.exports = {
+  getAllWords,
+  getWordById,
+  insertWord,
+  updateWord,
+  deleteWord
+};