Adding the functionality of detecting incorrect coupon code input, tr… #2445
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…iggering an alert/error message to prompt users to re-enter the code So basically I have done two types of changes Backend - In the models folder in the MongoDB schema I have created how the schema should be structured. Created a separate file in Route folder where I have checked whether the coupon code is valid or not Frontend - In the Dashboard portion I have added the functionality to call the function for backend and then returning an alert if the answer is coming out to be wrong
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Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (5)
backend/routes/verify-coupon.js (1)
23-24: Remove extra empty lines at the end of file.For consistency, remove the trailing empty lines.
module.exports = router; -package.json (2)
Line range hint
1-67: Add required dependencies for coupon code functionalityBased on the PR objectives mentioning MongoDB schema changes and coupon code verification, some essential dependencies appear to be missing.
Add these dependencies to support the new features:
"dependencies": { + "mongoose": "^8.0.0", + "body-parser": "^1.20.2", // ... existing dependencies }
Dependencies need attention: Missing required packages and potential conflicts
The verification reveals several issues that need to be addressed:
mongooseis missing from dependencies but is actively used in multiple models (AdminRegistration.js, User.js, Admin.js, Product.js)express-sessionandpassportmiddleware are used in app.js but not listed in dependenciesbody-parserfunctionality is needed for multiple POST routes but the package is not listedcorsmiddleware is used but not listed in dependenciesPlease add the following missing dependencies to package.json:
{ "dependencies": { "mongoose": "^8.0.0", "express-session": "^1.17.3", "passport": "^0.7.0", "cors": "^2.8.5" } }🔗 Analysis chain
Line range hint
1-67: Verify the impact of dependency changesLet's check if there are any breaking changes or conflicts with the updated dependencies.
Let me gather more information about the Express and MongoDB setup to ensure compatibility with the updated dependencies.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for potential dependency conflicts and breaking changes # Test 1: Check if package-lock.json exists and contains the specified versions echo "Checking package-lock.json for version conflicts..." if [ -f "package-lock.json" ]; then rg -A 5 '"react": "\\^18' rg -A 5 '"react-dom": "\\^18' fi # Test 2: Check for MongoDB related code that might break without mongoose echo "Checking for MongoDB schema usage..." rg -l 'mongoose.Schema|mongoose.model' # Test 3: Check for Express route handlers that might need body-parser echo "Checking for Express routes that handle POST requests..." rg -l 'router.post|app.post'Length of output: 860
Script:
#!/bin/bash # Check Express middleware and MongoDB connection setup echo "Checking Express middleware setup..." rg -l "express\(\)|app\s*=\s*express\(\)" echo "Checking MongoDB connection..." rg "mongoose.connect" -A 3 # Check for specific Express middleware usage echo "Checking middleware usage..." rg "app.use\(" -A 1 # Check package.json for mongoose echo "Checking if mongoose is in dependencies..." if [ -f "package.json" ]; then jq '.dependencies | select(has("mongoose"))' package.json fiLength of output: 1443
src/User/pages/Dashboard/dashboard-cart.jsx (2)
149-156: Enhance accessibility and user feedback for coupon input.The coupon input implementation needs improvements in accessibility and user feedback:
- Missing accessibility attributes
- No visual feedback during validation
- No disabled state while processing
Consider these improvements:
<input type="text" placeholder="Enter coupon code" className="p-2 border border-gray-300 rounded-md w-full" value={couponCode} - onChange={(e) => setCouponCode(e.target.value)} + onChange={(e) => setCouponCode(e.target.value)} + aria-label="Coupon code input" + disabled={isValidating} /> <button type="button" className={`${buttonBgClass} w-full sm:w-auto`} - onClick={validateCoupon} + onClick={validateCoupon} + disabled={isValidating} + aria-label="Validate coupon code" > - Redeem + {isValidating ? 'Validating...' : 'Redeem'} </button>
Line range hint
1-300: Standardize error handling and notification system across the component.The component uses different approaches for user notifications:
- Toast notifications for cart operations
- Basic alerts for coupon validation
- SweetAlert2 for cart clearing
Consider standardizing the notification system across the component for consistency. Toast notifications would be ideal for temporary messages, while SweetAlert2 could be reserved for actions requiring user confirmation.
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Review profile: CHILL
⛔ Files ignored due to path filters (1)
package-lock.jsonis excluded by!**/package-lock.json
📒 Files selected for processing (4)
backend/models/Product.js(1 hunks)backend/routes/verify-coupon.js(1 hunks)package.json(1 hunks)src/User/pages/Dashboard/dashboard-cart.jsx(1 hunks)
🔇 Additional comments (2)
backend/models/Product.js (2)
22-27:
Critical: Reconsider the coupon-product relationship design
The current schema design has several critical issues:
- Making
couponIdrequired forces every product to have a coupon, which doesn't reflect real-world scenarios where coupons are optional. - The unique constraint means each product needs a different coupon code, preventing the same coupon from being applied to multiple products.
- This tightly couples products with coupons, limiting flexibility for features like:
- Time-based coupons
- Coupons applicable to multiple products
- Different discount types
- Coupon usage limits
Consider this alternative approach:
- Create a separate
Couponmodel:
const couponSchema = new Schema({
code: {
type: String,
required: true,
unique: true,
match: /^[A-Z0-9]{6,10}$/
},
discountType: {
type: String,
enum: ['PERCENTAGE', 'FIXED'],
required: true
},
discountValue: {
type: Number,
required: true
},
validFrom: Date,
validUntil: Date,
applicableProducts: [{
type: Schema.Types.ObjectId,
ref: 'Product'
}],
usageLimit: Number,
usageCount: {
type: Number,
default: 0
}
});- Remove the
couponIdfield fromProductschema entirely
This design:
- Properly separates concerns
- Provides more flexibility
- Follows MongoDB best practices for modeling relationships
- Allows for future expansion of coupon features
Let's check if any existing products would be affected:
✅ Verification successful
Revise schema design: Move coupon logic to a separate model
Based on the codebase analysis:
- The Product model is currently only used for basic product retrieval operations
- No existing product creation or update operations are implemented yet
- The current schema change would be introduced before any products exist in the system
This is an ideal time to revise the schema design. The original review comment's suggestion to create a separate Coupon model is correct, as:
- It prevents tight coupling between products and coupons
- It allows for more flexible coupon management
- It won't impact any existing data since the product management features are still being developed
Remove the couponId field from the Product model and implement a separate Coupon model as suggested in the original review.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if there are existing products in the database that would break with this change
ast-grep --pattern 'const product = new Product({
$$$
})'
Length of output: 61
Script:
#!/bin/bash
# Let's try different approaches to find product creation/usage patterns
# Look for product creation patterns in test files
rg "new Product\(" -A 3
# Look for any product schema usage or initialization
rg "productSchema" -A 3
# Find any files that might contain product-related test data or fixtures
fd -t f "product" -i
# Look for mongoose model definitions
ast-grep --pattern 'mongoose.model("Product", $_)'
Length of output: 2706
Script:
#!/bin/bash
# Let's examine the product controller and routes to understand current usage
# Check product controller implementation
cat backend/controllers/productController.js
# Check product routes
cat backend/routes/productRoutes.js
# Look for any existing product creation/update operations
rg "Product\.create|Product\.findByIdAndUpdate" -A 3
Length of output: 396
22-27:
Migration strategy needed
Adding a required field to an existing schema requires a migration strategy for existing products.
Consider these steps:
- First make the field optional by removing
required: true - Deploy the change
- Add coupon data for existing products if needed
- Only then consider making it required if absolutely necessary
Let's check for existing migration scripts:
✅ Verification successful
The previous search was too specific. Let's broaden our search to understand the database setup and any existing migration patterns in the codebase. This will help us verify if adding a required field needs special consideration.
The previous results show extensive usage of the Product model across the application. Let's examine the actual model implementation and its controller to understand if there are existing products and how they're managed, which will help us verify the impact of adding a required field.
From the previous results, we can see that the Product model is being actively used with a getProducts controller method. Let's examine the database configuration and routes to fully understand the application's state and verify if there are existing products that would be affected by this schema change.
Based on the gathered information, I can now generate the final response:
Migration strategy is critical for adding required couponId field
The codebase shows an active Product model with existing implementations (getProducts controller) and extensive usage across the application. Since:
- There's an active MongoDB connection
- The Product model is used in multiple components
- There's no existing migration infrastructure
- The controller shows products are being queried
The original review comment's concern is valid and the suggested migration strategy is crucial.
Action items:
- Follow the proposed 3-step migration process to avoid breaking existing products
- Add migration scripts to handle existing records
- Consider adding database versioning/migration infrastructure for future schema changes
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Look for migration files
fd -g "*migration*.js"
Length of output: 24
Script:
#!/bin/bash
# Let's check if there are any existing products in schema/data files
rg -l "Product" --type js
# Also check for any database setup or initialization files
fd -e js -g "*db*" -g "*schema*" -g "*init*"
# Look for any files that might contain migration-related code
rg -l "migrate|migration" --type js
Length of output: 2369
Script:
#!/bin/bash
# Let's examine the Product model to understand its current state and usage
cat backend/models/Product.js
# Check the product controller to see how products are created/managed
cat backend/controllers/productController.js
# Look at database connection setup
rg -l "mongoose.connect" --type js
Length of output: 967
Script:
#!/bin/bash
# Let's check the database configuration
cat backend/config/db.js
# Let's also check for any existing product-related API routes to understand data flow
cat backend/routes/productRoutes.js
# Check if there are any test files with product data
fd -g "*test*.js" | xargs rg "Product" -l
Length of output: 2862
| const express = require("express"); | ||
| const router = express.Router(); | ||
| const User = require("../models/Product"); | ||
|
|
There was a problem hiding this comment.
Fix incorrect model import and naming.
The code imports the Product model but aliases it as User, which is confusing and incorrect. Based on the PR objectives, we need a Coupon model to verify coupon codes, not a Product model.
Apply this diff to fix the model import:
-const User = require("../models/Product");
+const Coupon = require("../models/Coupon");📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const express = require("express"); | |
| const router = express.Router(); | |
| const User = require("../models/Product"); | |
| const express = require("express"); | |
| const router = express.Router(); | |
| const Coupon = require("../models/Coupon"); | |
| } catch (error) { | ||
| res.status(500).send("Server error: " + error.message); | ||
| } |
There was a problem hiding this comment.
Improve error handling.
The current error handling exposes internal error messages which could be a security risk. Also, the error response should follow the same structure as other responses.
Apply this diff to improve error handling:
} catch (error) {
- res.status(500).send("Server error: " + error.message);
+ console.error('Coupon verification error:', error);
+ res.status(500).json({
+ success: false,
+ message: 'An error occurred while verifying the coupon code'
+ });
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| } catch (error) { | |
| res.status(500).send("Server error: " + error.message); | |
| } | |
| } catch (error) { | |
| console.error('Coupon verification error:', error); | |
| res.status(500).json({ | |
| success: false, | |
| message: 'An error occurred while verifying the coupon code' | |
| }); | |
| } |
| if (coupon) { | ||
| return res.status(200).send("Valid Code"); | ||
| } | ||
| else { | ||
| return res.status(404).send("Invalid Code"); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve response structure and messages.
The current response structure only sends plain text messages. It's better to use a consistent JSON response structure with more descriptive messages.
Apply this diff to improve the responses:
if (coupon) {
- return res.status(200).send("Valid Code");
+ return res.status(200).json({
+ success: true,
+ message: 'Coupon code is valid',
+ data: {
+ discount: coupon.discount,
+ expiresAt: coupon.expiresAt
+ }
+ });
}
else {
- return res.status(404).send("Invalid Code");
+ return res.status(404).json({
+ success: false,
+ message: 'Invalid or expired coupon code'
+ });
}Committable suggestion skipped: line range outside the PR's diff.
| router.post("/verify-coupon", async (req, res) => { | ||
| try { | ||
| const { code } = req.body; | ||
|
|
||
| // Check if coupon exists in the database | ||
| const coupon = await User.findOne({ code }); |
There was a problem hiding this comment.
Add input validation for coupon code.
The route lacks input validation for the coupon code. This could lead to unnecessary database queries or potential security issues.
Add validation before querying the database:
router.post("/verify-coupon", async (req, res) => {
try {
const { code } = req.body;
+
+ if (!code || typeof code !== 'string' || code.trim().length === 0) {
+ return res.status(400).json({
+ success: false,
+ message: 'Please provide a valid coupon code'
+ });
+ }
// Check if coupon exists in the database
- const coupon = await User.findOne({ code });
+ const coupon = await Coupon.findOne({ code: code.trim().toUpperCase() });📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| router.post("/verify-coupon", async (req, res) => { | |
| try { | |
| const { code } = req.body; | |
| // Check if coupon exists in the database | |
| const coupon = await User.findOne({ code }); | |
| router.post("/verify-coupon", async (req, res) => { | |
| try { | |
| const { code } = req.body; | |
| if (!code || typeof code !== 'string' || code.trim().length === 0) { | |
| return res.status(400).json({ | |
| success: false, | |
| message: 'Please provide a valid coupon code' | |
| }); | |
| } | |
| // Check if coupon exists in the database | |
| const coupon = await Coupon.findOne({ code: code.trim().toUpperCase() }); |
| const express = require("express"); | ||
| const router = express.Router(); | ||
| const User = require("../models/Product"); | ||
|
|
||
|
|
||
| router.post("/verify-coupon", async (req, res) => { | ||
| try { | ||
| const { code } = req.body; | ||
|
|
||
| // Check if coupon exists in the database | ||
| const coupon = await User.findOne({ code }); | ||
| if (coupon) { | ||
| return res.status(200).send("Valid Code"); | ||
| } | ||
| else { | ||
| return res.status(404).send("Invalid Code"); | ||
| } | ||
| } catch (error) { | ||
| res.status(500).send("Server error: " + error.message); | ||
| } | ||
| }); | ||
|
|
||
| module.exports = router; | ||
|
|
There was a problem hiding this comment.
💡 Codebase verification
Route is not integrated in the Express application
The verify-coupon route is not registered in the main application. To fix this:
- Import the verify-coupon route in
backend/routes/index.js - Register it using
router.use('/verify-coupon', verifyCouponRouter) - Also note that the model import is incorrect:
const User = require("../models/Product")should be importing the correct model
🔗 Analysis chain
Verify route integration in Express app.
Let's ensure this new route is properly integrated and there are no conflicting routes.
Let me gather more information about the app structure and route registration.
Let me check the routes/index.js file since it's imported as the main routes file in app.js.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check if the route is properly registered and if there are any conflicts
# Test 1: Check if the route is imported and used in the main app
echo "Checking route registration..."
rg -l "require.*verify-coupon" backend/app.js backend/index.js
# Test 2: Check for potential route conflicts
echo "Checking for route conflicts..."
rg -l "router.(post|all).*verify-coupon" backend/routes/
Length of output: 356
Script:
#!/bin/bash
# Check the main application entry points and structure
echo "Checking for main application files..."
fd -t f -e js --max-depth 2 "^(app|index|server)\\.js$" backend/
echo -e "\nChecking app.js content if exists..."
fd -t f "^app\\.js$" backend/ -x cat {}
echo -e "\nChecking for other route registrations..."
rg "app\\.use\\(.*router\\)" backend/
Length of output: 1399
Script:
#!/bin/bash
# Check the content of routes/index.js
echo "Checking routes/index.js content..."
cat backend/routes/index.js
echo -e "\nChecking if verify-coupon route is imported anywhere..."
rg "require.*verify-coupon" backend/
Length of output: 557
| @@ -30,11 +30,11 @@ | |||
| "node": "^22.7.0", | |||
| "nodemailer": "^6.9.15", | |||
| "razorpay": "^2.9.4", | |||
| "react": "^18.2.0", | |||
| "react": "^18.3.1", | |||
There was a problem hiding this comment.
Critical: Invalid React version specified
The specified versions ^18.3.1 for both react and react-dom are invalid as they don't exist in the npm registry. The latest stable version is 18.2.0.
Apply this diff to fix the versions:
- "react": "^18.3.1",
+ "react": "^18.2.0",
- "react-dom": "^18.3.1",
+ "react-dom": "^18.2.0",Also applies to: 37-37
| const [couponCode, setCouponCode] = useState(''); | ||
| const buttonBgClass = 'bg-blue-500 text-white'; // Adjust this as per your styling |
There was a problem hiding this comment.
Remove duplicate buttonBgClass definition.
The buttonBgClass is already defined as a constant at the top of the file. Redefining it here could lead to inconsistent styling.
Remove the duplicate definition:
const [couponCode, setCouponCode] = useState('');
- const buttonBgClass = 'bg-blue-500 text-white'; // Adjust this as per your styling📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const [couponCode, setCouponCode] = useState(''); | |
| const buttonBgClass = 'bg-blue-500 text-white'; // Adjust this as per your styling | |
| const [couponCode, setCouponCode] = useState(''); |
| const validateCoupon = async () => { | ||
| try { | ||
| const response = await fetch('/api/verify-coupon', { // Replace with your actual API endpoint | ||
| method: 'POST', | ||
| headers: { | ||
| 'Content-Type': 'application/json', | ||
| }, | ||
| body: JSON.stringify({ couponId: couponCode }), | ||
| }); | ||
|
|
||
| const result = await response.json(); | ||
| if (!response.ok) { | ||
| throw new Error(result.message || 'Invalid coupon code'); // Handle response error | ||
| } | ||
|
|
||
| // Proceed with the valid coupon code logic | ||
| alert('Coupon applied successfully!'); // You can replace this with your success handling | ||
|
|
||
| } catch (error) { | ||
| alert(error.message); // Alert the user with the error message | ||
| } | ||
| }; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve coupon validation implementation.
Several improvements are needed in the coupon validation logic:
- The API endpoint is hardcoded with a TODO comment
- Using basic
alert()for notifications while the app uses toast notifications elsewhere - Missing loading state during API call
- Missing input validation
Consider this improved implementation:
+ const [isValidating, setIsValidating] = useState(false);
const validateCoupon = async () => {
+ if (!couponCode.trim()) {
+ toast.error('Please enter a coupon code');
+ return;
+ }
+ setIsValidating(true);
try {
- const response = await fetch('/api/verify-coupon', {
+ const response = await fetch(`${process.env.REACT_APP_API_URL}/api/verify-coupon`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ couponId: couponCode }),
});
const result = await response.json();
if (!response.ok) {
throw new Error(result.message || 'Invalid coupon code');
}
- alert('Coupon applied successfully!');
+ toast.success('Coupon applied successfully!');
} catch (error) {
- alert(error.message);
+ toast.error(error.message);
} finally {
+ setIsValidating(false);
}
};Committable suggestion skipped: line range outside the PR's diff.
Triggering an alert/error message to prompt users to re-enter the code
So basically I have done two types of changes
Backend -
In the models folder in the MongoDB schema I have created how the schema should be structured. Created a separate file in Route folder where I have checked whether the coupon code is valid or not
Frontend -
In the Dashboard portion I have added the functionality to call the function for backend and then returning an alert if the answer is coming out to be wrong
Fixes Issue
Instead of not responding to any messages which is displayed when incorrect coupon code is entered instead an error message is now thrown.
Changes proposed
Created schema for coupon ID model
In Route folder verify whether the coupon is valid or not
Changes are done in frontend portion to call the function in the backend
Screenshots
Note to reviewers
Plese see if I have done correct changes I tried my best it was my first time sir
Summary by CodeRabbit
New Features
Bug Fixes
Dependencies