Implement Comprehensive Error Handling for Product Search Endpoint

[HermanKoii]

Implement Comprehensive Error Handling for Product Search Endpoint

Description

Task

Add comprehensive error handling for search endpoint

Acceptance Criteria

• Implements comprehensive error handling
• Provides clear, informative error responses
• Validates all input parameters
• Uses custom error classes with appropriate status codes

Summary of Work

Overview

This pull request adds robust error handling to the product search functionality, ensuring clear and informative error responses for various search scenarios.

Changes Made

• Enhanced error handling in SearchService.search() method
• Created custom error classes in searchErrors.ts
• Implemented comprehensive input validation
• Added specific error types for different search failure scenarios

Implementation Details

Error Classes (src/searchErrors.ts)

• Base SearchError with standardized error handling
• InvalidQueryError: Handles empty or malformed queries
• EmptyResultError: Manages scenarios with no matching products
• SearchParamError: Validates search parameter constraints

Search Service Improvements (src/searchService.ts)

• Input validation for search query
• Length validation for search terms (2-100 characters)
• Filtering by term and category with case-insensitive matching
• Minimum results validation
• Throwing specific error types for different failure modes

Error Handling Scenarios

1. Empty search query
2. Search term too short/long
3. No products matching the search criteria
4. Insufficient results compared to minimum required
5. Invalid search parameters

Testing Approach

• Validate error throwing for various input scenarios
• Ensure correct error messages and status codes
• Test boundary conditions and edge cases

Notes

• Error messages are descriptive and helpful for debugging
• Maintains a consistent error response structure
• Easily extensible for future search functionality improvements

Changes Made

• Created custom error classes in searchErrors.ts
• Enhanced input validation in SearchService
• Added specific error handling for different search scenarios
• Implemented informative error messages

Tests

• Verify error thrown for empty search query
• Check validation for search term length
• Test error handling for no matching products
• Validate minimum results constraint
• Ensure correct error status codes

Signatures

Staking Key

G79TK8ccVx11JCsStBY85thohoSCm5eDwACAVju4z7bj: T9MyWnKG4RGzbgqKfMewUcwGc7AxXjy8T68B3bzpubN4S46FQMYPzFC12sBAkNiLa5Ebv8r9tzjU7gEMPK29umYuqzCwv1YMNQ94dVwcJ3j88ejQfuXVjiDW1zzkPcLkn7VfREVypC54Rp5qZNrQdYqeSXFkUMCQNEUWHrWmRFRtEApkbq48BieKDogWsKkxMMLJVFXpyUZtHu6CDnG4hvNQyxT9XDQPZhJBtNi6ynd9Xj6EHtDwvWbkCVGE4J1DVPeZH4Lvuk1qpQEjuSNkwAWDFJ7YjEoocCQqkqi3qDFLXCdbVLxMSgJnL7VX9BGHf8wcom5tBB419jUNKtg2uah3QSna7AuDhCQ93DUReuuMKyyX5y9W6UzAcjUzZvpp17QmEiWWzRcjwcSyxqhbMyGRGo1TzX8ds2

Public Key

3Zfb8hhM5g8ZC7nqNKELNBByLSP56s6gqGNc8RWB6PgP: WTeVRz9bK36DXEUdshWnCuAGTmCGU2KJXrSaANf7sTZ18Pp3Fr9NEoR666T87gSBKzi6AdK1hRqk7TpjDoTG65u7Q6RYXq9V2K48ppdSXKCCehEe5r9WCvVaqWNjcJc2p9izTGp1FFap4KkWAPfbEQZEM352YPWHGU2aAepFVrPWnCn6WvPjABxuDKG6PtX47SjmfQNWHF33AV7fzDxWG7M1znPSEwELQThxFajy8WZA9bfZvJGRvP53yvfe1pjJh7cJaX6gntevchDtLqsn2uDhnP491Y6TjYbf7JdUEfDiq4hoxPegkt5G2ipmMgUKoHLEraEyyMd8q25vRonjV6jnNa2i7yMPbMRGgANEGfnFag7By99wKco28ebYMMHU1wcxs8t7JaaAadvcoi7M3hZjCnEhrpNFUG