commit 60dcb029dc0fab606d806af862c8f7c48013db84 Author: Mohan Ki Date: Mon Jul 27 13:42:18 2026 +0530 Initial commit of CK-QR Platform diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..904c0ea --- /dev/null +++ b/.gitignore @@ -0,0 +1,15 @@ +node_modules/ +.next/ +dist/ +build/ +postgres-data/ +redis-data/ +*.log +.DS_Store +.env +.env.local +.env.development +.env.test +.env.production +.idea/ +.vscode/ diff --git a/Product_Scope.md b/Product_Scope.md new file mode 100644 index 0000000..f085c7d --- /dev/null +++ b/Product_Scope.md @@ -0,0 +1,92 @@ +# Product Scope Document: CK-QR Platform + +**Project Name:** CK-QR +**Document Version:** 1.0 +**Prepared by:** Cavin Infotech Pvt. Ltd. + +## 1. Executive Summary +**Product Objective:** To develop and deploy a comprehensive, scalable SaaS platform that allows users to generate, customize, manage, and track Static and Dynamic QR codes. +**Target Audience:** Individual users, marketers, and enterprise businesses requiring centralized QR code management, custom branding, and real-time scan analytics. +**Monetization Strategy:** A freemium model where basic and dynamic generation is free (ad-supported routing), driving conversions to paid tiers for ad-free scanning, custom domains, and advanced analytics. + +## 2. Core Functional Modules (In-Scope) + +### A. User Management & Authentication +* **Authentication:** Registration/Login via Email, Google SSO, and Apple SSO. +* **Role-Based Access:** System must support Guest (unregistered), Free, Trial, Pro, and Enterprise user states. +* **Team Workspaces:** Multi-seat management for Enterprise tiers to collaborate on shared QR campaigns. + +### B. QR Code Generation Engine +* **Dynamic QR Codes:** URL routing system allowing users to update destination content post-generation without altering the printed QR image. +* **Supported Data Types:** + * *Standard/Open-Source:* URL, vCard/MeCard, Text, Email (`mailto:`), SMS (`sms:`), Phone Call (`tel:`), Wi-Fi (WPA/WEP/Hidden), Location (Geo URI), Event (vCalendar/iCalendar), and GS1 Digital Link. + * *Dynamic/Custom:* PDF/Document (including Excel/PPTX), App Store routing (OS-dependent), Image Galleries, Social Media (Link in Bio), Audio/Video (YouTube/MP3), Crypto Wallet addresses, Messaging (WhatsApp/Telegram/Line), Payments (UPI/PayPal), Forms & Surveys (Google Forms/Microsoft Forms), and Multi-URL/Conditional Routing (routing based on OS, time, location, or scan limits). + +### C. QR Customization Studio +* **Design Templates:** Library of pre-configured multiple design templates for various industries and use-cases (e.g., sleek, playful, corporate). +* **Visual Editor (Patterns & Eyes):** Advanced interface for modifying data patterns (e.g., dots, squares, rounded, liquid) and customizing corner eye/frame shapes (outer and inner eye styling). +* **Color & Branding:** Support for single colors, linear/radial gradients, background colors, and transparent backgrounds. +* **Custom Logo Integration:** Central logo placement with support for custom image uploads, social media presets (Facebook, Instagram, LinkedIn, etc.), automatic background removal behind the logo, and logo resizing/scaling. +* **Frames & Call-To-Action:** Pre-designed customizable frames with integrated call-to-action text (e.g., "Scan Me", "View Menu", "Get Wi-Fi") and editable fonts/colors. + +### D. QR Management Dashboard +* **Asset Organization:** Folders and tagging systems for campaign management. +* **Dynamic Controls:** Update destination URLs, temporarily pause campaigns (routes to a "Campaign Ended" holding page), or archive codes. +* **Bulk Operations:** Delete, categorize, or download multiple QR codes simultaneously. + +### E. Scan Analytics & Tracking +* **Metrics:** Total scans, unique devices, operating system breakdown, and location tracking (Country/City). +* **Visualization:** Time-based charts (day/week/month). +* **Data Export:** CSV exports for external reporting. +* **Integrations:** Advanced tracking integration via Google Analytics and Meta Pixel for retargeting and deeper user insights. + +### F. Web-Based QR Scanner +* **In-Browser Scanning:** A dedicated web interface utilizing device cameras (webcam/smartphone) to scan QR codes without requiring a native mobile app download. +* **Scan History:** Keeping a session or local log of recently scanned codes for the user. + +## 3. Account Tier & Subscription Architecture +The platform operates on a tiered structure, utilizing a robust downgrade logic to ensure dynamic links remain functional even if subscriptions lapse. + +| Feature / Capability | Guest / Free | Free Trial (14-Day) | Pro / Enterprise Paid | +| :--- | :--- | :--- | :--- | +| **Static QR Codes** | Unlimited | Unlimited | Unlimited | +| **Dynamic QR Codes** | Up to 5 | Unlimited | Unlimited | +| **Scan Interstitial Ads** | Yes (Ad-supported) | No Ads | No Ads | +| **Custom Domains** | CK-QR domain only | Custom subdomains | Custom domain / White-label | +| **Export Formats** | PNG, JPEG | PNG, JPEG, SVG, PDF | All + Bulk zip export | +| **File Storage Limit** | 5 MB per upload | 20 MB per upload | 100 MB - 1 GB+ per upload | + +**Trial Expiration Logic:** +When a 14-day Pro Trial expires without payment, the account is downgraded to the Free Tier. Dynamic links do not break. Instead, the routing behavior reverts to ad-supported mode (serving a 3–5 second interstitial ad before redirecting) and vector exports are locked. + +## 4. Technical Architecture & Infrastructure +To handle high-volume concurrent scans, rapid URL redirection, and secure data handling, the system will utilize a modern, highly available stack. + +* **Frontend UI:** React.js / Next.js for a responsive dashboard and SEO-optimized landing pages. +* **Backend API:** Node.js backend executing asynchronous, non-blocking requests for rapid link routing and QR generation. +* **Process Management:** PM2 will be utilized for Node.js process management, clustering, and ensuring backend zero-downtime restarts. +* **Deployment & Networking:** The application will be containerized using Docker. Nginx will serve as the reverse proxy and load balancer to manage incoming scan traffic and route it to the appropriate backend containers. +* **Database Engine:** PostgreSQL for relational user and billing data, paired with a Redis caching layer for active dynamic URLs to ensure sub-second redirection latency. +* **Storage & CDN:** AWS S3 or Cloudflare R2 for storing user-uploaded assets (logos, PDFs) and serving them globally. + +## 5. Development Phases + +* **Phase 1: Foundation & Core Engine (Weeks 1-4)** + Database schema design, Node.js API setup, authentication workflows, and the core QR generation and routing logic. +* **Phase 2: Customization Studio & Dashboard (Weeks 5-8)** + Frontend development of the React.js dashboard, visual QR customization studio, folder management, and user asset storage. +* **Phase 3: Subscription & Analytics (Weeks 9-11)** + Integration of the payment gateway (e.g., Stripe), trial expiration logic, ad-interstitial middleware, and scan analytics tracking. +* **Phase 4: Optimization & Launch (Weeks 12-14)** + Docker containerization, Nginx configuration, PM2 load testing for high-concurrency scans, QA testing, and production deployment. + +## 6. Out of Scope (Phase 1) +* Native iOS and Android mobile applications. +* Public API access for third-party developers. +* Complete white-labeling of the dashboard for enterprise resellers. + +## 7. Assumptions & Risks +* **Link Spam & Abuse:** Malicious actors may use free dynamic QRs for phishing. + * *Mitigation:* Implement automated URL scanning (e.g., Google Safe Browsing API) upon creation and enforce email verification for dynamic creation. +* **Ad-Blocker Interference:** Browser ad-blockers may prevent the ad-supported redirect logic from firing. + * *Mitigation:* Server-side routing delays rather than client-side ad rendering for free tiers. diff --git a/api/Dockerfile.dev b/api/Dockerfile.dev new file mode 100644 index 0000000..0d245bb --- /dev/null +++ b/api/Dockerfile.dev @@ -0,0 +1,16 @@ +FROM node:20-alpine + +WORKDIR /app + +COPY package*.json ./ + +RUN npm install +# Also install nodemon globally for dev hot-reloading +RUN npm install -g nodemon + +COPY . . + +EXPOSE 4001 +EXPOSE 9229 + +CMD ["nodemon", "--inspect=0.0.0.0:9229", "server.js"] diff --git a/api/db/init.sql b/api/db/init.sql new file mode 100644 index 0000000..a4eeb74 --- /dev/null +++ b/api/db/init.sql @@ -0,0 +1,20 @@ +CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; + +CREATE TABLE IF NOT EXISTS users ( + id UUID PRIMARY KEY DEFAULT uuid_generate_v4(), + email VARCHAR(255) UNIQUE NOT NULL, + password_hash VARCHAR(255) NOT NULL, + role VARCHAR(50) DEFAULT 'free', + created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP +); + +CREATE TABLE IF NOT EXISTS qr_codes ( + id UUID PRIMARY KEY DEFAULT uuid_generate_v4(), + user_id UUID REFERENCES users(id) ON DELETE CASCADE, + type VARCHAR(20) NOT NULL, -- 'static' or 'dynamic' + data_type VARCHAR(50) NOT NULL, -- 'URL', 'Wi-Fi', etc. + destination_url TEXT, + short_url_id VARCHAR(50) UNIQUE, -- Only for dynamic routing e.g. 'xyz123' + design_data JSONB, -- Custom styling + created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP +); diff --git a/api/db/migrations/01_analytics_and_admin.sql b/api/db/migrations/01_analytics_and_admin.sql new file mode 100644 index 0000000..f392066 --- /dev/null +++ b/api/db/migrations/01_analytics_and_admin.sql @@ -0,0 +1,9 @@ +CREATE TABLE IF NOT EXISTS qr_scans ( + id UUID PRIMARY KEY DEFAULT uuid_generate_v4(), + qr_code_id UUID REFERENCES qr_codes(id) ON DELETE CASCADE, + ip_address VARCHAR(45), + user_agent TEXT, + os VARCHAR(100), + device_type VARCHAR(50), + scanned_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP +); diff --git a/api/db/migrations/02_app_settings.sql b/api/db/migrations/02_app_settings.sql new file mode 100644 index 0000000..9ad79b1 --- /dev/null +++ b/api/db/migrations/02_app_settings.sql @@ -0,0 +1,15 @@ +CREATE TABLE IF NOT EXISTS app_settings ( + key VARCHAR(100) PRIMARY KEY, + value TEXT, + category VARCHAR(50), + updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP +); + +-- Insert some default keys so they show up in the UI +INSERT INTO app_settings (key, value, category) VALUES + ('icici_merchant_id', '', 'payments'), + ('icici_api_key', '', 'payments'), + ('google_safe_browsing_key', '', 'security'), + ('google_client_id', '', 'auth'), + ('apple_service_id', '', 'auth') +ON CONFLICT (key) DO NOTHING; diff --git a/api/db/migrations/03_seed_admin.sql b/api/db/migrations/03_seed_admin.sql new file mode 100644 index 0000000..30d1b41 --- /dev/null +++ b/api/db/migrations/03_seed_admin.sql @@ -0,0 +1,3 @@ +INSERT INTO users (email, password_hash, role) +VALUES ('admin@ckqr.com', '$2b$10$ezY4oBvmZUc667XCKbl98.hKicJbOG9yaV9lFbZXwbeXWgMuN7L/6', 'enterprise') +ON CONFLICT (email) DO NOTHING; diff --git a/api/middleware/auth.js b/api/middleware/auth.js new file mode 100644 index 0000000..32626d5 --- /dev/null +++ b/api/middleware/auth.js @@ -0,0 +1,22 @@ +const jwt = require('jsonwebtoken'); + +const verifyToken = (req, res, next) => { + let token = req.headers['authorization']; + + // Check cookies if no auth header + if (!token && req.cookies && req.cookies.token) { + token = req.cookies.token; + } else if (token && token.startsWith('Bearer ')) { + token = token.slice(7, 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"license": "ISC", + "dependencies": { + "camelcase": "^5.0.0", + "decamelize": "^1.2.0" + }, + "engines": { + "node": ">=6" + } + } + } +} diff --git a/api/package.json b/api/package.json new file mode 100644 index 0000000..3863260 --- /dev/null +++ b/api/package.json @@ -0,0 +1,25 @@ +{ + "name": "api", + "version": "1.0.0", + "description": "", + "main": "index.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "keywords": [], + "author": "", + "license": "ISC", + "dependencies": { + "bcryptjs": "^3.0.3", + "cookie-parser": "^1.4.7", + "cors": "^2.8.6", + "dotenv": "^17.4.2", + "express": "^5.2.1", + "jsonwebtoken": "^9.0.3", + "pg": "^8.22.0", + "qrcode": "^1.5.4", + "redis": "^6.1.0", + "shortid": "^2.2.17", + "ua-parser-js": "^2.0.10" + } +} diff --git a/api/routes/admin.js b/api/routes/admin.js new file mode 100644 index 0000000..f52b46a --- /dev/null +++ b/api/routes/admin.js @@ -0,0 +1,91 @@ +const express = require('express'); +const router = express.Router(); +const { Pool } = require('pg'); + +// In a real app, you would have an admin middleware protecting this +// const { verifyAdminToken } = require('../middleware/adminAuth'); + +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +// List all users +router.get('/users', async (req, res) => { + try { + const result = await pgPool.query('SELECT id, email, role, created_at FROM users ORDER BY created_at DESC'); + res.json(result.rows); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server Error' }); + } +}); + +// Update a user's tier +router.put('/users/:id/tier', async (req, res) => { + const { id } = req.params; + const { role } = req.body; // 'free', 'pro', 'enterprise' + + if (!['free', 'pro', 'enterprise'].includes(role)) { + return res.status(400).json({ error: 'Invalid role specified' }); + } + + try { + const result = await pgPool.query( + 'UPDATE users SET role = $1 WHERE id = $2 RETURNING id, email, role', + [role, id] + ); + + if (result.rows.length === 0) { + return res.status(404).json({ error: 'User not found' }); + } + + res.json({ message: 'User tier updated successfully', user: result.rows[0] }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server Error' }); + } +}); + +// Get all API settings +router.get('/settings', async (req, res) => { + try { + const result = await pgPool.query('SELECT * FROM app_settings ORDER BY category, key'); + res.json(result.rows); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server Error fetching settings' }); + } +}); + +// Update multiple API settings +router.put('/settings', async (req, res) => { + const { settings } = req.body; // Array of { key, value } + if (!Array.isArray(settings)) return res.status(400).json({ error: 'Invalid settings format' }); + + const client = await pgPool.connect(); + try { + await client.query('BEGIN'); + for (const setting of settings) { + await client.query( + `INSERT INTO app_settings (key, value) + VALUES ($1, $2) + ON CONFLICT (key) DO UPDATE SET value = $2, updated_at = CURRENT_TIMESTAMP`, + [setting.key, setting.value] + ); + } + await client.query('COMMIT'); + res.json({ message: 'Settings updated successfully' }); + } catch (err) { + await client.query('ROLLBACK'); + console.error(err); + res.status(500).json({ error: 'Server Error updating settings' }); + } finally { + client.release(); + } +}); + +module.exports = router; diff --git a/api/routes/analytics.js b/api/routes/analytics.js new file mode 100644 index 0000000..9133d2a --- /dev/null +++ b/api/routes/analytics.js @@ -0,0 +1,61 @@ +const express = require('express'); +const router = express.Router(); +const { Pool } = require('pg'); +const { verifyToken } = require('../middleware/auth'); + +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +router.get('/:qrCodeId', verifyToken, async (req, res) => { + const { qrCodeId } = req.params; + const userId = req.user.id; + + try { + // Ensure this user owns the QR code + const checkOwner = await pgPool.query('SELECT id FROM qr_codes WHERE id = $1 AND user_id = $2', [qrCodeId, userId]); + if (checkOwner.rows.length === 0) { + return res.status(403).json({ error: 'Unauthorized or QR code not found' }); + } + + // Get total scans + const totalQuery = await pgPool.query('SELECT COUNT(*) as total FROM qr_scans WHERE qr_code_id = $1', [qrCodeId]); + + // Get OS breakdown + const osQuery = await pgPool.query( + 'SELECT os, COUNT(*) as count FROM qr_scans WHERE qr_code_id = $1 GROUP BY os', + [qrCodeId] + ); + + // Get Device Type breakdown + const deviceQuery = await pgPool.query( + 'SELECT device_type, COUNT(*) as count FROM qr_scans WHERE qr_code_id = $1 GROUP BY device_type', + [qrCodeId] + ); + + // Get Scans over time (last 7 days grouped by date) + const timeQuery = await pgPool.query( + `SELECT DATE(scanned_at) as date, COUNT(*) as count + FROM qr_scans + WHERE qr_code_id = $1 AND scanned_at >= NOW() - INTERVAL '7 days' + GROUP BY DATE(scanned_at) ORDER BY date ASC`, + [qrCodeId] + ); + + res.json({ + totalScans: parseInt(totalQuery.rows[0].total), + osBreakdown: osQuery.rows, + deviceBreakdown: deviceQuery.rows, + timeline: timeQuery.rows + }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server Error fetching analytics' }); + } +}); + +module.exports = router; diff --git a/api/routes/auth.js b/api/routes/auth.js new file mode 100644 index 0000000..38c36c9 --- /dev/null +++ b/api/routes/auth.js @@ -0,0 +1,86 @@ +const express = require('express'); +const router = express.Router(); +const bcrypt = require('bcryptjs'); +const jwt = require('jsonwebtoken'); +const { Pool } = require('pg'); + +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +const JWT_SECRET = process.env.JWT_SECRET || 'supersecret123'; + +// Register +router.post('/register', async (req, res) => { + const { email, password } = req.body; + if (!email || !password) return res.status(400).json({ error: 'Email and password required' }); + + try { + const checkUser = await pgPool.query('SELECT id FROM users WHERE email = $1', [email]); + if (checkUser.rows.length > 0) return res.status(400).json({ error: 'User already exists' }); + + const salt = await bcrypt.genSalt(10); + const hash = await bcrypt.hash(password, salt); + + const newUser = await pgPool.query( + 'INSERT INTO users (email, password_hash, role) VALUES ($1, $2, $3) RETURNING id, email, role', + [email, hash, 'free_trial'] + ); + + const token = jwt.sign({ id: newUser.rows[0].id, email: newUser.rows[0].email, role: newUser.rows[0].role }, JWT_SECRET, { expiresIn: '14d' }); + res.cookie('token', token, { httpOnly: true, maxAge: 14 * 24 * 60 * 60 * 1000, secure: false, sameSite: 'lax' }); + + res.status(201).json({ message: 'User registered', user: newUser.rows[0] }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error' }); + } +}); + +// Login +router.post('/login', async (req, res) => { + const { email, password } = req.body; + if (!email || !password) return res.status(400).json({ error: 'Email and password required' }); + + try { + const userQuery = await pgPool.query('SELECT * FROM users WHERE email = $1', [email]); + if (userQuery.rows.length === 0) return res.status(404).json({ error: 'User not found' }); + + const user = userQuery.rows[0]; + const isMatch = await bcrypt.compare(password, user.password_hash); + if (!isMatch) return res.status(401).json({ error: 'Invalid credentials' }); + + const token = jwt.sign({ id: user.id, email: user.email, role: user.role }, JWT_SECRET, { expiresIn: '14d' }); + res.cookie('token', token, { httpOnly: true, maxAge: 14 * 24 * 60 * 60 * 1000, secure: false, sameSite: 'lax' }); + + res.json({ user: { id: user.id, email: user.email, role: user.role } }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error' }); + } +}); + +// Get Current User (Validate Session) +const { verifyToken } = require('../middleware/auth'); +router.get('/me', verifyToken, async (req, res) => { + try { + const userQuery = await pgPool.query('SELECT id, email, role FROM users WHERE id = $1', [req.user.id]); + if (userQuery.rows.length === 0) return res.status(404).json({ error: 'User not found' }); + res.json({ user: userQuery.rows[0] }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error' }); + } +}); + +// Logout +router.post('/logout', (req, res) => { + res.clearCookie('token'); + res.json({ message: 'Logged out' }); +}); + +module.exports = router; diff --git a/api/routes/payments.js b/api/routes/payments.js new file mode 100644 index 0000000..7baa438 --- /dev/null +++ b/api/routes/payments.js @@ -0,0 +1,29 @@ +const express = require('express'); +const router = express.Router(); + +// Placeholder for ICICI Payment Gateway initialization +router.post('/icici/initiate', async (req, res) => { + const { amount, plan, userId } = req.body; + + // Here you would construct the ICICI request payload, compute checksums, etc. + // and return the URL or parameters for the frontend to redirect the user to ICICI. + + console.log(`Initiating ICICI payment for user ${userId}, plan: ${plan}, amount: ${amount}`); + + res.json({ + message: 'Payment initiation logic goes here', + redirectUrl: 'https://placeholder.icicibank.com/pay' + }); +}); + +// Placeholder for ICICI Webhook/Callback +router.post('/icici/webhook', async (req, res) => { + // Here ICICI will post back payment success or failure + // We would verify the signature, and if successful, upgrade the user in the database. + + console.log('Received ICICI Webhook:', req.body); + + res.status(200).send('Webhook received'); +}); + +module.exports = router; diff --git a/api/routes/qr.js b/api/routes/qr.js new file mode 100644 index 0000000..a1c274c --- /dev/null +++ b/api/routes/qr.js @@ -0,0 +1,137 @@ +const express = require('express'); +const router = express.Router(); +const QRCode = require('qrcode'); +const shortid = require('shortid'); +const { verifyToken } = require('../middleware/auth'); +const { Pool } = require('pg'); + +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +// Get all QRs for user +router.get('/', verifyToken, async (req, res) => { + try { + const result = await pgPool.query( + `SELECT q.*, + COALESCE((SELECT COUNT(*) FROM qr_scans s WHERE s.qr_code_id = q.id), 0) as scans + FROM qr_codes q + WHERE q.user_id = $1 + ORDER BY q.created_at DESC`, + [req.user.id] + ); + res.json({ qr_codes: result.rows }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error fetching QR codes' }); + } +}); + +// Generate QR Code +router.post('/generate', verifyToken, async (req, res) => { + const { name, type, dataType, destinationUrl, designData, customSlug } = req.body; + const userId = req.user.id; + + if (!type || !dataType) { + return res.status(400).json({ error: 'Missing type or dataType' }); + } + + try { + let shortUrlId = null; + let finalQrContent = destinationUrl; + + if (type === 'dynamic') { + if (!destinationUrl) return res.status(400).json({ error: 'Destination URL is required for dynamic QR' }); + + // Allow custom slug or generate random + shortUrlId = customSlug ? customSlug.trim() : shortid.generate(); + + // Enforce uniqueness for custom slug + if (customSlug) { + const existing = await pgPool.query('SELECT id FROM qr_codes WHERE short_url_id = $1', [shortUrlId]); + if (existing.rows.length > 0) { + return res.status(409).json({ error: 'That custom link is already taken. Please choose another.' }); + } + } + + // In production, this would use the real domain (e.g. https://ck-qr.com/l/) + finalQrContent = `${process.env.BASE_URL || 'http://localhost:4001'}/l/${shortUrlId}`; + } + + const result = await pgPool.query( + `INSERT INTO qr_codes (user_id, name, type, data_type, destination_url, short_url_id, design_data) + VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING *`, + [userId, name || 'Untitled QR', type, dataType, destinationUrl, shortUrlId, designData || {}] + ); + + // Generate Image (Data URI for simple response, could be saved to S3 later) + const qrImage = await QRCode.toDataURL(finalQrContent); + + res.json({ + message: 'QR Code generated', + qrRecord: result.rows[0], + qrImage: qrImage + }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error generating QR code' }); + } +}); + +// Update QR Code (Editable Link) +router.put('/:id', verifyToken, async (req, res) => { + const { name, destinationUrl, shortUrlId } = req.body; + const qrId = req.params.id; + const userId = req.user.id; + + try { + // Verify ownership + const qrCheck = await pgPool.query('SELECT * FROM qr_codes WHERE id = $1 AND user_id = $2', [qrId, userId]); + if (qrCheck.rows.length === 0) { + return res.status(404).json({ error: 'QR Code not found or unauthorized' }); + } + + const qr = qrCheck.rows[0]; + let newShortUrlId = shortUrlId ? shortUrlId.trim() : qr.short_url_id; + + // Check if slug changed and enforce uniqueness + if (newShortUrlId !== qr.short_url_id) { + const existing = await pgPool.query('SELECT id FROM qr_codes WHERE short_url_id = $1', [newShortUrlId]); + if (existing.rows.length > 0) { + return res.status(409).json({ error: 'That custom link is already taken. Please choose another.' }); + } + } + + // Update DB + const updated = await pgPool.query( + `UPDATE qr_codes + SET name = COALESCE($1, name), + destination_url = COALESCE($2, destination_url), + short_url_id = COALESCE($3, short_url_id) + WHERE id = $4 RETURNING *`, + [name, destinationUrl, newShortUrlId, qrId] + ); + + res.json({ message: 'QR Code updated', qrRecord: updated.rows[0] }); + } catch (err) { + console.error(err); + res.status(500).json({ error: 'Server error updating QR code' }); + } +}); + +// Delete QR Code +router.delete('/:id', verifyToken, async (req, res) => { + try { + const result = await pgPool.query('DELETE FROM qr_codes WHERE id = $1 AND user_id = $2 RETURNING id', [req.params.id, req.user.id]); + if (result.rows.length === 0) return res.status(404).json({ error: 'Not found' }); + res.json({ message: 'QR Code deleted' }); + } catch (err) { + res.status(500).json({ error: 'Error deleting QR code' }); + } +}); + +module.exports = router; diff --git a/api/routes/redirect.js b/api/routes/redirect.js new file mode 100644 index 0000000..ecfbdc7 --- /dev/null +++ b/api/routes/redirect.js @@ -0,0 +1,81 @@ +const express = require('express'); +const router = express.Router(); +const { Pool } = require('pg'); +const { createClient } = require('redis'); +const UAParser = require('ua-parser-js'); + +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +const redisClient = createClient({ + url: `redis://${process.env.REDIS_HOST || 'redis'}:${process.env.REDIS_PORT || 6379}` +}); +redisClient.on('error', (err) => console.log('Redis Client Error', err)); +(async () => { + if (!redisClient.isOpen) await redisClient.connect(); +})(); + +router.get('/:shortUrlId', async (req, res) => { + const { shortUrlId } = req.params; + const cacheKey = `qr:${shortUrlId}:full`; + + try { + let qrData = null; + + // 1. Check Cache + const cachedData = await redisClient.get(cacheKey); + if (cachedData) { + qrData = JSON.parse(cachedData); + } else { + // 2. Not in cache, check DB + const result = await pgPool.query( + `SELECT q.id as qr_id, q.destination_url, u.role + FROM qr_codes q + JOIN users u ON q.user_id = u.id + WHERE q.short_url_id = $1`, + [shortUrlId] + ); + + if (result.rows.length === 0) { + return res.status(404).send('QR Code not found'); + } + + qrData = result.rows[0]; + await redisClient.setEx(cacheKey, 3600, JSON.stringify(qrData)); + } + + // 3. Track Analytics (Async so it doesn't block redirection) + const parser = new UAParser(req.headers['user-agent']); + const os = parser.getOS().name || 'Unknown'; + const deviceType = parser.getDevice().type || 'desktop'; + const ip = req.ip || req.connection.remoteAddress; + + pgPool.query( + `INSERT INTO qr_scans (qr_code_id, ip_address, user_agent, os, device_type) + VALUES ($1, $2, $3, $4, $5)`, + [qrData.qr_id, ip, req.headers['user-agent'], os, deviceType] + ).catch(err => console.error('Failed to log scan:', err)); + + // 4. Check Tier & Redirect + if (qrData.role === 'free') { + const encodedUrl = encodeURIComponent(qrData.destination_url); + // In production, this points to the real Next.js domain + const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:4000'; + return res.redirect(302, `${frontendUrl}/ad-redirect?url=${encodedUrl}`); + } else { + // Paid users skip the ad + return res.redirect(302, qrData.destination_url); + } + + } catch (err) { + console.error(err); + res.status(500).send('Server Error during redirection'); + } +}); + +module.exports = router; diff --git a/api/server.js b/api/server.js new file mode 100644 index 0000000..e82d05d --- /dev/null +++ b/api/server.js @@ -0,0 +1,78 @@ +const express = require('express'); +const cors = require('cors'); +const { Pool } = require('pg'); +const { createClient } = require('redis'); +const cookieParser = require('cookie-parser'); +require('dotenv').config(); + +const app = express(); +const port = process.env.PORT || 4001; + +app.use(cors({ origin: 'http://localhost:4000', credentials: true })); +app.use(express.json()); + +// Routes +const authRoutes = require('./routes/auth'); +const qrRoutes = require('./routes/qr'); +const redirectRoutes = require('./routes/redirect'); +const analyticsRoutes = require('./routes/analytics'); +const adminRoutes = require('./routes/admin'); +const paymentsRoutes = require('./routes/payments'); + +app.use('/api/auth', authRoutes); +app.use('/api/qr', qrRoutes); +app.use('/api/analytics', analyticsRoutes); +app.use('/api/admin', adminRoutes); +app.use('/api/payments', paymentsRoutes); +app.use('/l', redirectRoutes); + +// Postgres setup +const pgPool = new Pool({ + host: process.env.PGHOST || 'postgres', + port: process.env.PGPORT || 5432, + user: process.env.PGUSER || 'postgres', + password: process.env.PGPASSWORD || 'postgres', + database: process.env.PGDATABASE || 'ckqr', +}); + +// Redis setup +const redisClient = createClient({ + url: `redis://${process.env.REDIS_HOST || 'redis'}:${process.env.REDIS_PORT || 6379}` +}); + +redisClient.on('error', (err) => console.log('Redis Client Error', err)); + +app.get('/api/health', async (req, res) => { + let pgStatus = 'Unknown'; + let redisStatus = 'Unknown'; + + try { + const pgRes = await pgPool.query('SELECT NOW()'); + pgStatus = 'Connected'; + } catch (err) { + pgStatus = `Error: ${err.message}`; + } + + try { + if (!redisClient.isOpen) { + await redisClient.connect(); + } + await redisClient.ping(); + redisStatus = 'Connected'; + } catch (err) { + redisStatus = `Error: ${err.message}`; + } + + res.json({ + status: 'ok', + services: { + api: 'Running', + postgres: pgStatus, + redis: redisStatus + } + }); +}); + +app.listen(port, () => { + console.log(`CK-QR API listening on port ${port}`); +}); diff --git a/client b/client new file mode 160000 index 0000000..bcc39bf --- /dev/null +++ b/client @@ -0,0 +1 @@ +Subproject commit bcc39bfd52a51c60d651f80dc6b9ac20e2cd9a1d diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..7906352 --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,61 @@ +version: '3.8' + +services: + frontend: + build: + context: ./client + dockerfile: Dockerfile.dev + ports: + - "4000:4000" + volumes: + - ./client:/app + - /app/node_modules + environment: + - PORT=4000 + depends_on: + - backend + + backend: + build: + context: ./api + dockerfile: Dockerfile.dev + ports: + - "4001:4001" + - "9229:9229" + volumes: + - ./api:/app + - /app/node_modules + environment: + - PORT=4001 + - PGHOST=postgres + - PGPORT=5432 + - PGUSER=postgres + - PGPASSWORD=postgres + - PGDATABASE=ckqr + - REDIS_HOST=redis + - REDIS_PORT=6379 + depends_on: + - postgres + - redis + + postgres: + image: postgres:15-alpine + environment: + - POSTGRES_USER=postgres + - POSTGRES_PASSWORD=postgres + - POSTGRES_DB=ckqr + ports: + - "5432:5432" + volumes: + - postgres_data:/var/lib/postgresql/data + + redis: + image: redis:7-alpine + ports: + - "6379:6379" + volumes: + - redis_data:/data + +volumes: + postgres_data: + redis_data: