init version

2025-05-09 09:04:25 -04:00
commit 5382659312
12 changed files with 1370 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+nkcs-engage.cookie.txt
+.env
--- a/17
+++ b/17
@@ -0,0 +1,17 @@
+FROM node:lts-alpine
+
+ENV NODE_ENV=production
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+WORKDIR /usr/src/app
+
+COPY package.json pnpm-lock.yaml ./
+
+RUN pnpm install --frozen-lockfile --prod
+
+COPY . .
+
+EXPOSE 3000
+
+CMD ["pnpm", "start"]
--- a/README.md
+++ b/README.md
@@ -0,0 +1,12 @@
+## How to Run
+
+copy `example.env`
+
+```bash
+cp example.env .env
+```
+
+edit `.env`
+
+`API_USERNAME` is your engage username in URL-encode.
+`API_PASSWORD` is your engage password in URL-encode.
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -0,0 +1,11 @@
+services:
+  dsas-cca-backend:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: dsas-cca-backend
+    ports:
+      - "${PORT}:${PORT}"
+    env_file:
+      - .env
+    restart: unless-stopped
--- a/engage-api/get-activity.mjs
+++ b/engage-api/get-activity.mjs
@@ -0,0 +1,306 @@
+// get-activity.mjs
+
+import axios from 'axios';
+import fs from 'fs/promises'; // Using fs.promises directly
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+// --- Replicating __dirname for ESM ---
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// --- Cookie Cache Configuration & In-Memory Cache ---
+const COOKIE_FILE_PATH = path.resolve(__dirname, 'nkcs-engage.cookie.txt');
+let _inMemoryCookie = null;
+
+// --- Custom Error for Authentication ---
+class AuthenticationError extends Error {
+    constructor(message = "Authentication failed, cookie may be invalid.", status) {
+        super(message);
+        this.name = "AuthenticationError";
+        this.status = status;
+    }
+}
+
+// --- Cookie Cache Helper Functions ---
+async function loadCachedCookie() {
+    if (_inMemoryCookie) {
+        console.log("Using in-memory cached cookie.");
+        return _inMemoryCookie;
+    }
+    try {
+        const cookieFromFile = await fs.readFile(COOKIE_FILE_PATH, 'utf8');
+        if (cookieFromFile) {
+            _inMemoryCookie = cookieFromFile;
+            console.log("Loaded cookie from file cache.");
+            return _inMemoryCookie;
+        }
+    } catch (err) {
+        if (err.code === 'ENOENT') {
+            console.log("Cookie cache file not found. No cached cookie loaded.");
+        } else {
+            console.warn("Error loading cookie from file:", err.message);
+        }
+    }
+    return null;
+}
+
+async function saveCookieToCache(cookieString) {
+    if (!cookieString) {
+        console.warn("Attempted to save an empty or null cookie. Aborting save.");
+        return;
+    }
+    _inMemoryCookie = cookieString;
+    try {
+        await fs.writeFile(COOKIE_FILE_PATH, cookieString, 'utf8');
+        console.log("Cookie saved to file cache.");
+    } catch (err) {
+        console.error("Error saving cookie to file:", err.message);
+    }
+}
+
+async function clearCookieCache() {
+    _inMemoryCookie = null;
+    try {
+        await fs.unlink(COOKIE_FILE_PATH);
+        console.log("Cookie cache file deleted.");
+    } catch (err) {
+        if (err.code !== 'ENOENT') {
+            console.error("Error deleting cookie file:", err.message);
+        } else {
+            console.log("Cookie cache file did not exist, no need to delete.");
+        }
+    }
+}
+
+async function testCookieValidity(cookieString) {
+    if (!cookieString) return false;
+    console.log("Testing cookie validity...");
+    try {
+        const url = 'https://engage.nkcswx.cn/Services/ActivitiesService.asmx/GetActivityDetails';
+        const headers = {
+            'Content-Type': 'application/json; charset=UTF-8',
+            'Cookie': cookieString,
+            'User-Agent': 'Mozilla/5.0 (Node.js DSAS-CCA get-activity Module)',
+        };
+        const payload = { "activityID": "3350" };
+        await axios.post(url, payload, { headers, timeout: 10000 });
+        console.log("Cookie test successful (API responded 2xx). Cookie is valid.");
+        return true;
+    } catch (error) {
+        console.warn("Cookie validity test failed.");
+        if (error.response) {
+            console.warn(`Cookie test API response status: ${error.response.status}. Cookie is likely invalid or expired.`);
+        } else {
+            console.warn(`Cookie test failed due to network or other error: ${error.message}`);
+        }
+        return false;
+    }
+}
+
+// --- Core API Interaction Functions ---
+async function getSessionId() {
+    const url = 'https://engage.nkcswx.cn/Login.aspx';
+    try {
+        const response = await axios.get(url, {
+            headers: { 'User-Agent': 'Mozilla/5.0 (Node.js DSAS-CCA get-activity Module)' }
+        });
+        const setCookieHeader = response.headers['set-cookie'];
+        if (setCookieHeader && setCookieHeader.length > 0) {
+            const sessionIdCookie = setCookieHeader.find(cookie => cookie.trim().startsWith('ASP.NET_SessionId='));
+            if (sessionIdCookie) {
+                console.log('Debugging - ASP.NET_SessionId created');
+                return sessionIdCookie.split(';')[0];
+            }
+        }
+        console.error("No ASP.NET_SessionId cookie found in Set-Cookie header.");
+        return null;
+    } catch (error) {
+        console.error(`Error in getSessionId: ${error.response ? `${error.response.status} - ${error.response.statusText}` : error.message}`);
+        throw error;
+    }
+}
+
+async function getMSAUTH(sessionId, userName, userPwd, templateFilePath) {
+    const url = 'https://engage.nkcswx.cn/Login.aspx';
+    try {
+        let templateData = await fs.readFile(templateFilePath, 'utf8');
+        const postData = templateData
+            .replace('{{USERNAME}}', userName)
+            .replace('{{PASSWORD}}', userPwd);
+        const headers = {
+            'Content-Type': 'application/x-www-form-urlencoded', 'Cookie': sessionId,
+            'User-Agent': 'Mozilla/5.0 (Node.js DSAS-CCA get-activity Module)',
+            'Referer': 'https://engage.nkcswx.cn/Login.aspx'
+        };
+        console.log('Debugging - Getting .ASPXFORMSAUTH');
+        const response = await axios.post(url, postData, {
+            headers, maxRedirects: 0,
+            validateStatus: (status) => status >= 200 && status < 400
+        });
+        const setCookieHeader = response.headers['set-cookie'];
+        let formsAuthCookieValue = null;
+        if (setCookieHeader && setCookieHeader.length > 0) {
+            const aspxAuthCookies = setCookieHeader.filter(cookie => cookie.trim().startsWith('.ASPXFORMSAUTH='));
+            if (aspxAuthCookies.length > 0) {
+                for (let i = aspxAuthCookies.length - 1; i >= 0; i--) {
+                    const cookieCandidateParts = aspxAuthCookies[i].split(';');
+                    const firstPart = cookieCandidateParts[0].trim();
+                    if (firstPart.length > '.ASPXFORMSAUTH='.length && firstPart.substring('.ASPXFORMSAUTH='.length).length > 0) {
+                        formsAuthCookieValue = firstPart; break;
+                    }
+                }
+            }
+        }
+        if (formsAuthCookieValue) {
+            console.log('Debugging - .ASPXFORMSAUTH cookie obtained.');
+            return formsAuthCookieValue;
+        } else {
+            console.error("No valid .ASPXFORMSAUTH cookie found. Headers:", setCookieHeader || "none");
+            return null;
+        }
+    } catch (error) {
+        if (error.code === 'ENOENT') console.error(`Error: Template file '${templateFilePath}' not found.`);
+        else console.error(`Error in getMSAUTH: ${error.message}`);
+        throw error;
+    }
+}
+
+async function getCompleteCookies(userName, userPwd, templateFilePath) {
+    console.log('Debugging - Attempting to get complete cookie string (login process).');
+    const sessionId = await getSessionId();
+    if (!sessionId) throw new Error("Login failed: Could not obtain ASP.NET_SessionId.");
+    
+    const msAuth = await getMSAUTH(sessionId, userName, userPwd, templateFilePath);
+    if (!msAuth) throw new Error("Login failed: Could not obtain .ASPXFORMSAUTH cookie.");
+    
+    return `${sessionId}; ${msAuth}`;
+}
+
+async function getActivityDetailsRaw(activityId, cookies, maxRetries = 3, timeoutMilliseconds = 20000) {
+    const url = 'https://engage.nkcswx.cn/Services/ActivitiesService.asmx/GetActivityDetails';
+    const headers = {
+        'Content-Type': 'application/json; charset=UTF-8', 'Cookie': cookies,
+        'User-Agent': 'Mozilla/5.0 (Node.js DSAS-CCA get-activity Module)',
+        'X-Requested-With': 'XMLHttpRequest'
+    };
+    const payload = { "activityID": String(activityId) };
+
+    for (let attempt = 0; attempt < maxRetries; attempt++) {
+        try {
+            const response = await axios.post(url, payload, {
+                headers, timeout: timeoutMilliseconds, responseType: 'text'
+            });
+            const outerData = JSON.parse(response.data);
+            if (outerData && typeof outerData.d === 'string') {
+                const innerData = JSON.parse(outerData.d);
+                if (innerData.isError) {
+                    console.warn(`API reported isError:true for activity ${activityId}.`);
+                    return null;
+                }
+                return response.data;
+            } else {
+                console.error(`Unexpected API response structure for activity ${activityId}.`);
+            }
+        } catch (error) {
+            if (error.response && (error.response.status === 403 || error.response.status === 401)) {
+                console.warn(`Authentication error (${error.response.status}) while fetching activity ${activityId}. Cookie may be invalid.`);
+                throw new AuthenticationError(`Received ${error.response.status} for activity ${activityId}`, error.response.status);
+            }
+            console.error(`Attempt ${attempt + 1}/${maxRetries} for activity ${activityId} failed: ${error.message}`);
+            if (error.response) {
+                 console.error(`Status: ${error.response.status}, Data (getActivityDetailsRaw): ${ String(error.response.data).slice(0,100)}...`);
+            }
+            if (attempt === maxRetries - 1) {
+                 console.error(`All ${maxRetries} retries failed for activity ${activityId}.`);
+                 throw error;
+            }
+            await new Promise(resolve => setTimeout(resolve, 1000 * (attempt + 1)));
+        }
+    }
+    return null;
+}
+
+/**
+ * Main exported function. Handles cookie caching, validation, re-authentication, and fetches activity details.
+ * @param {string} activityId - The ID of the activity to fetch.
+ * @param {string} userName - URL-encoded username.
+ * @param {string} userPwd - URL-encoded password.
+ * @param {string} [templateFileName="login_template.txt"] - Name of the login template file.
+ * @param {boolean} [forceLogin=false] - If true, bypasses cached cookie and forces a new login.
+ * @returns {Promise<object|null>} The parsed JSON object of activity details, or null on failure.
+ */
+export async function fetchActivityData(activityId, userName, userPwd, templateFileName = "login_template.txt", forceLogin = false) {
+    let currentCookie = forceLogin ? null : await loadCachedCookie();
+    
+    if (forceLogin && currentCookie) {
+        await clearCookieCache();
+        currentCookie = null;
+    }
+
+    if (currentCookie) {
+        const isValid = await testCookieValidity(currentCookie);
+        if (!isValid) {
+            console.log("Cached cookie test failed or cookie expired. Clearing cache.");
+            await clearCookieCache();
+            currentCookie = null;
+        } else {
+            console.log("Using valid cached cookie.");
+        }
+    }
+
+    if (!currentCookie) {
+        console.log(forceLogin ? "Forcing new login." : "No valid cached cookie found or cache bypassed. Attempting login...");
+        try {
+            currentCookie = await getCompleteCookies(userName, userPwd, path.resolve(__dirname, templateFileName));
+            await saveCookieToCache(currentCookie);
+        } catch (loginError) {
+            console.error(`Login process failed: ${loginError.message}`);
+            return null;
+        }
+    }
+
+    if (!currentCookie) {
+        console.error("Critical: No cookie available after login attempt. Cannot fetch activity data.");
+        return null;
+    }
+    
+    try {
+        const rawActivityDetailsString = await getActivityDetailsRaw(activityId, currentCookie);
+        if (rawActivityDetailsString) {
+            const parsedOuter = JSON.parse(rawActivityDetailsString);
+            return JSON.parse(parsedOuter.d);
+        }
+        console.warn(`No data returned from getActivityDetailsRaw for activity ${activityId}, but no authentication error was thrown.`);
+        return null;
+    } catch (error) {
+        if (error instanceof AuthenticationError) {
+            console.warn(`Initial fetch failed with AuthenticationError (Status: ${error.status}). Cookie was likely invalid. Attempting re-login and one retry.`);
+            await clearCookieCache(); 
+
+            try {
+                console.log("Attempting re-login due to authentication failure...");
+                currentCookie = await getCompleteCookies(userName, userPwd, path.resolve(__dirname, templateFileName));
+                await saveCookieToCache(currentCookie);
+                
+                console.log("Re-login successful. Retrying request for activity details once...");
+                const rawActivityDetailsStringRetry = await getActivityDetailsRaw(activityId, currentCookie);
+                if (rawActivityDetailsStringRetry) {
+                    const parsedOuterRetry = JSON.parse(rawActivityDetailsStringRetry);
+                    return JSON.parse(parsedOuterRetry.d);
+                }
+                console.warn(`Still no details for activity ${activityId} after re-login and retry.`);
+                return null;
+            } catch (retryLoginOrFetchError) {
+                console.error(`Error during re-login or retry fetch for activity ${activityId}: ${retryLoginOrFetchError.message}`);
+                return null;
+            }
+        } else {
+            console.error(`Failed to fetch activity data for ${activityId} due to non-authentication error: ${error.message}`);
+            return null;
+        }
+    }
+}
+
+// Optionally export other functions if they are meant to be used externally
+export { clearCookieCache, testCookieValidity };
--- a/engage-api/login_template.txt
+++ b/engage-api/login_template.txt
--- a/engage-api/struct-activity.mjs
+++ b/engage-api/struct-activity.mjs
@@ -0,0 +1,151 @@
+// struct-activity.mjs
+
+let clubSchema = {
+    academicYear: null,
+    category: null,
+    description: null,
+    duration: {
+        endDate: null,
+        isRecurringWeekly: null,
+        startDate: null
+    },
+    grades: {
+        max: null,
+        min: null
+    },
+    id: null,
+    isPreSignup: null,
+    isStudentLed: null,
+    materials: [],
+    meeting: {
+        day: null,
+        endTime: null,
+        location: {
+            block: null,
+            room: null,
+            site: null
+        },
+        startTime: null
+    },
+    name: null,
+    photo: null,
+    poorWeatherPlan: null,
+    requirements: [],
+    schedule: null,
+    semesterCost: null,
+    staff: [],
+    staffForReports: [],
+    studentLeaders: []
+}
+
+async function applyFields(field, structuredActivityData) {
+    switch (true) {
+        case field.fID == "academicyear":
+            structuredActivityData.academicYear = field.fData;
+            break;
+        case field.fID == "schedule":
+            structuredActivityData.schedule = field.fData;
+            break;
+        case field.fID == "category":
+            structuredActivityData.category = field.fData;
+            break;
+        case field.fID == "activityname":
+            structuredActivityData.name = field.fData;
+            break;
+        case field.fID == "day":
+            structuredActivityData.meeting.day = field.fData;
+            break;
+        case field.fID == "start":
+            structuredActivityData.meeting.startTime = field.fData;
+            break;
+        case field.fID == "end":
+            structuredActivityData.meeting.endTime = field.fData;
+            break;
+        case field.fID == "site":
+            structuredActivityData.meeting.location.site = field.fData;
+            break;
+        case field.fID == "block":
+            structuredActivityData.meeting.location.block = field.fData;
+            break;
+        case field.fID == "room":
+            structuredActivityData.meeting.location.room = field.fData;
+            break;
+        case field.fID == "staff":
+            let staff = field.fData.split(", ");
+            structuredActivityData.staff = staff;
+            break;
+        case field.fID == "runsfrom":
+            structuredActivityData.duration.startDate = field.fData;
+            break;
+        case field.fID == "runsto":
+            structuredActivityData.duration.endDate = field.fData;
+            break;
+        case field.fData == "Recurring Weekly":
+            structuredActivityData.duration.isRecurringWeekly = true;
+            break;
+        default:
+            //console.log(`No matching case for field: fID=${field.fID}, fType=${field.fType}`);
+            break;
+    }
+}
+
+async function postProcess(structuredActivityData) {
+    structuredActivityData.description = structuredActivityData.description.replaceAll("<br/>","\n");
+    if (structuredActivityData.name.search("Student-led") != -1) {
+        structuredActivityData.isStudentLed = true;
+    } else {
+        structuredActivityData.isStudentLed = false;
+    }
+    const grades = structuredActivityData.schedule.match(/G(\d+)-(\d+)/);
+    structuredActivityData.grades.min = grades[1];
+    structuredActivityData.grades.max = grades[2];
+}
+
+export async function structActivityData(rawActivityData) {
+    let structuredActivityData = JSON.parse(JSON.stringify(clubSchema));
+    let rows = rawActivityData.newRows;
+    // Load club id - "rID": "3350:1:0:0"
+    structuredActivityData.id = rows[0].rID.split(":")[0];
+    for (const rowObject of rows) {
+        for (let i = 0; i < rowObject.fields.length; i++) {
+            const field = rowObject.fields[i];
+            // Optimize: no fData, just skip
+            if (field.fData == null && field.fData == "") { continue; }
+            // Process hard cases first
+            if (field.fData == "Description") {
+                structuredActivityData.description = rowObject.fields[i + 1].fData;
+                continue;
+            } else if (field.fData == "Name To Appear On Reports"){
+                let staffForReports = rowObject.fields[i + 1].fData.split(", ");
+                structuredActivityData.staffForReports = staffForReports;
+            } else if (field.fData == "Upload Photo") {
+                structuredActivityData.photo = rowObject.fields[i + 1].fData;
+            } else if (field.fData == "Poor Weather Plan") {
+                structuredActivityData.poorWeatherPlan = rowObject.fields[i + 1].fData;
+            } else if (field.fData == "Activity Runs From") {
+                if (rowObject.fields[i + 4].fData == "Recurring Weekly") {
+                    structuredActivityData.duration.isRecurringWeekly = true;
+                } else {
+                    structuredActivityData.duration.isRecurringWeekly = false;
+                }
+            } else if (field.fData == "Is Pre Sign-up") {
+                if (rowObject.fields[i + 1].fData == "") {
+                    structuredActivityData.isPreSignup = false;
+                } else {
+                    structuredActivityData.isPreSignup = true;
+                }
+            } else if (field.fData == "Semester Cost") {
+                if (rowObject.fields[i + 1].fData == "") {
+                    structuredActivityData.semesterCost = null;
+                } else {
+                    structuredActivityData.semesterCost = rowObject.fields[i + 1].fData
+                }
+            } else {
+                // Pass any other easy cases to helper function
+                applyFields(field, structuredActivityData);
+            }
+        }
+    }
+    postProcess(structuredActivityData);
+    return structuredActivityData
+}
--- a/engage-api/struct-staff.mjs
+++ b/engage-api/struct-staff.mjs
@@ -0,0 +1,21 @@
+// struct-staff.mjs
+
+let staffs = new Map();
+
+async function updateStaffMap(staffs,lParms) {
+    for (const staff of lParms) {
+        staffs.set(staff.key, staff.val)
+    }
+}
+
+export async function structStaffData(rawActivityData) {
+    let rows = rawActivityData.newRows;
+    for (const rowObject of rows) {
+        for (const field of rowObject.fields) {
+            if (field.fID == "staff") {
+                await updateStaffMap(staffs, field.lParms);
+                return staffs;
+            }
+        }
+    }
+}
--- a/example.env
+++ b/example.env
@@ -0,0 +1,4 @@
+API_USERNAME=
+API_PASSWORD=
+PORT=3000
+FIXED_STAFF_ACTIVITY_ID=7095
--- a/main.js
+++ b/main.js
@@ -0,0 +1,105 @@
+// main.js
+import express from 'express';
+import dotenv from 'dotenv';
+import { fetchActivityData } from './engage-api/get-activity.mjs';
+import { structActivityData } from './engage-api/struct-activity.mjs';
+import { structStaffData } from './engage-api/struct-staff.mjs';
+
+// Load environment variables from .env file
+dotenv.config();
+
+// --- Configuration ---
+const USERNAME = process.env.API_USERNAME;
+const PASSWORD = process.env.API_PASSWORD;
+const PORT = process.env.PORT || 3000; // Default to port 3000 if not specified
+const FIXED_STAFF_ACTIVITY_ID = process.env.FIXED_STAFF_ACTIVITY_ID || '3350';
+
+// --- Initialize Express App ---
+const app = express();
+
+// Middleware to parse JSON request bodies (useful if you add POST/PUT later)
+app.use(express.json());
+
+// --- API Endpoints ---
+
+// GET Endpoint: Welcome message
+app.get('/', (req, res) => {
+    res.send('Welcome to the DSAS CCA API!<br/><br/>\
+        API Endpoints:<br/>\
+        GET /v1/activity/:activityId (ID must be 1-4 digits)<br/>\
+        GET /v1/staffs');
+});
+
+// GET Endpoint: Fetch structured activity data by ID
+app.get('/v1/activity/:activityId', async (req, res) => {
+    let { activityId } = req.params; // Extract activityId from URL parameter
+
+    // Validate activityId: should be 1 to 4 digits
+    if (!/^\d{1,4}$/.test(activityId)) {
+        return res.status(400).json({
+            error: 'Invalid Activity ID format. Activity ID must be 1 to 4 digits (e.g., 1, 0001, 9999).'
+        });
+    }
+
+    if (!USERNAME || !PASSWORD) {
+        console.error('API username or password not configured. Check .env file or environment variables.');
+        return res.status(500).json({ error: 'Server configuration error.' });
+    }
+
+    console.log(`Workspaceing activity details for activity ID: ${activityId}`);
+    try {
+        const activityJson = await fetchActivityData(activityId, USERNAME, PASSWORD);
+        if (activityJson) {
+            const structuredActivity = await structActivityData(activityJson);
+            res.json(structuredActivity); // Assuming structActivityData returns a JSON-friendly object
+        } else {
+            res.status(404).json({ error: `Could not retrieve details for activity ${activityId}.` });
+        }
+    } catch (error) {
+        console.error(`Error fetching activity ${activityId}:`, error);
+        res.status(500).json({ error: 'An internal server error occurred while fetching activity data.' });
+    }
+});
+
+// GET Endpoint: Fetch fixed structured staff data
+app.get('/v1/staffs', async (req, res) => {
+    if (!USERNAME || !PASSWORD) {
+        console.error('API username or password not configured. Check .env file or environment variables.');
+        return res.status(500).json({ error: 'Server configuration error.' });
+    }
+
+    console.log(`Workspaceing staff details (using fixed activity ID: ${FIXED_STAFF_ACTIVITY_ID})`);
+    try {
+        const activityJson = await fetchActivityData(FIXED_STAFF_ACTIVITY_ID, USERNAME, PASSWORD);
+        if (activityJson) {
+            const staffMap = await structStaffData(activityJson); // This returns a Map
+
+            // Convert Map to a plain object for JSON serialization
+            const staffObject = Object.fromEntries(staffMap);
+            res.json(staffObject);
+        } else {
+            res.status(404).json({ error: `Could not retrieve base data using activity ID ${FIXED_STAFF_ACTIVITY_ID} to get staff details.` });
+        }
+    } catch (error) {
+        console.error(`Error fetching staff data (for fixed activity ID ${FIXED_STAFF_ACTIVITY_ID}):`, error);
+        res.status(500).json({ error: 'An internal server error occurred while fetching staff data.' });
+    }
+});
+
+// --- Start the Server ---
+app.listen(PORT, () => {
+    console.log(`Server is running on http://localhost:${PORT}`);
+    console.log('API Endpoints:');
+    console.log(`  GET /v1/activity/:activityId (ID must be 1-4 digits)`);
+    console.log(`  GET /v1/staffs`);
+    if (!USERNAME || !PASSWORD) {
+        console.warn('Warning: API_USERNAME or API_PASSWORD is not set. Please configure them in your .env file or environment variables.');
+    }
+});
+
+// Graceful shutdown (optional but good practice)
+process.on('SIGINT', () => {
+    console.log('Server shutting down...');
+    // Perform any cleanup here
+    process.exit(0);
+});
--- a/package.json
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "dsas-cca-backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "main.js",
+  "type": "module",
+  "scripts": {
+    "start": "node main.js",
+    "dev": "node --watch main.js"
+  },
+  "dependencies": {
+    "axios": "^1.9.0",
+    "dotenv": "^16.5.0",
+    "express": "^5.1.0",
+    "node-fetch": "^3.3.2"
+  },
+  "packageManager": "pnpm@10.10.0+sha512.d615db246fe70f25dcfea6d8d73dee782ce23e2245e3c4f6f888249fb568149318637dca73c2c5c8ef2a4ca0d5657fb9567188bfab47f566d1ee6ce987815c39"
+}
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+++ b/pnpm-lock.yaml
@@ -0,0 +1,721 @@
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