From 3fa25e9c0b33baa8ecf7a3cb62990200e042a585 Mon Sep 17 00:00:00 2001
From: Serhii Kusyi <sergijkusij@gmail.com>
Date: Mon, 11 May 2026 17:14:27 +0300
Subject: [PATCH] Add case converter server

---
 .github/workflows/test.yml-template | 23 +++++++++
 package-lock.json                   |  8 ++--
 package.json                        |  2 +-
 src/createServer.js                 | 74 +++++++++++++++++++++++++++--
 4 files changed, 99 insertions(+), 8 deletions(-)
 create mode 100644 .github/workflows/test.yml-template

diff --git a/.github/workflows/test.yml-template b/.github/workflows/test.yml-template
new file mode 100644
index 000000000..bb13dfc45
--- /dev/null
+++ b/.github/workflows/test.yml-template
@@ -0,0 +1,23 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test
diff --git a/package-lock.json b/package-lock.json
index fa582c7e6..5cb08f3fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "license": "GPL-3.0",
       "devDependencies": {
         "@mate-academy/eslint-config": "latest",
-        "@mate-academy/scripts": "^1.8.6",
+        "@mate-academy/scripts": "^2.1.3",
         "eslint": "^8.57.0",
         "eslint-plugin-jest": "^28.6.0",
         "eslint-plugin-node": "^11.1.0",
@@ -1467,9 +1467,9 @@
       }
     },
     "node_modules/@mate-academy/scripts": {
-      "version": "1.8.6",
-      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.8.6.tgz",
-      "integrity": "sha512-b4om/whj4G9emyi84ORE3FRZzCRwRIesr8tJHXa8EvJdOaAPDpzcJ8A0sFfMsWH9NUOVmOwkBtOXDu5eZZ00Ig==",
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-2.1.3.tgz",
+      "integrity": "sha512-a07wHTj/1QUK2Aac5zHad+sGw4rIvcNl5lJmJpAD7OxeSbnCdyI6RXUHwXhjF5MaVo9YHrJ0xVahyERS2IIyBQ==",
       "dev": true,
       "dependencies": {
         "@octokit/rest": "^17.11.2",
diff --git a/package.json b/package.json
index a6c885a1d..b70296ae9 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^2.1.3",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-node": "^11.1.0",
diff --git a/src/createServer.js b/src/createServer.js
index 89724c920..327c6a4a4 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -1,3 +1,71 @@
-// Write code here
-// Also, you can create additional files in the src folder
-// and import (require) them here
+const http = require('http');
+const { convertToCase } = require('./convertToCase');
+
+function createServer() {
+  const server = http.createServer((req, res) => {
+    res.setHeader('Content-Type', 'application/json');
+
+    const [path, queryString = ''] = req.url.split('?');
+
+    const textToConvert = path.slice(1);
+    const params = new URLSearchParams(queryString);
+    const toCase = params.get('toCase');
+
+    const errors = [];
+
+    if (!textToConvert) {
+      errors.push({
+        message:
+          'Text to convert is required. ' +
+          'Correct request is: "/<TEXT_TO_CONVERT>?toCase=<CASE_NAME>".',
+      });
+    }
+
+    if (!toCase) {
+      errors.push({
+        message:
+          '"toCase" query param is required. ' +
+          'Correct request is: "/<TEXT_TO_CONVERT>?toCase=<CASE_NAME>".',
+      });
+    }
+
+    const supportedCases = ['SNAKE', 'KEBAB', 'CAMEL', 'PASCAL', 'UPPER'];
+
+    if (toCase && !supportedCases.includes(toCase)) {
+      errors.push({
+        message:
+          'This case is not supported. ' +
+          'Available cases: SNAKE, KEBAB, CAMEL, PASCAL, UPPER.',
+      });
+    }
+
+    if (errors.length > 0) {
+      res.statusCode = 400;
+
+      return res.end(
+        JSON.stringify({
+          errors,
+        }),
+      );
+    }
+
+    const result = convertToCase(textToConvert, toCase);
+
+    res.statusCode = 200;
+
+    return res.end(
+      JSON.stringify({
+        originalCase: result.originalCase,
+        targetCase: toCase,
+        originalText: textToConvert,
+        convertedText: result.convertedText,
+      }),
+    );
+  });
+
+  return server;
+}
+
+module.exports = {
+  createServer,
+};