Implement Comprehensive File Upload Error Handling

[Vuk7912]

Implement Comprehensive File Upload Error Handling

Description

Task

Implement comprehensive upload error handling, create robust error handling for various upload scenarios including file type mismatches, size limits, and storage errors.

Acceptance Criteria

• Must support validation for file types specified in ALLOWED_FILE_TYPES
• File size must be limited to MAX_FILE_SIZE (10MB)
• Maximum file upload count restricted to MAX_FILE_COUNT (5 files)
• Detailed error messages must be returned for each validation failure
• Appropriate HTTP status codes must be used for different error scenarios
• Error handling must not expose sensitive system information

Summary of Work

This pull request introduces robust error handling for file upload scenarios, providing detailed and informative error responses for various potential upload failures.

Key Enhancements:

• Developed custom error classes for different upload scenarios
• Implemented strict file type, size, and count validations
• Created granular error handling middleware
• Provided clear, informative error messages

Implementation Details:

1. Created custom error classes in upload-errors.ts:

   • UploadError (base class)
   • FileSizeLimitError
   • FileTypeError
   • FileCountLimitError

2. Enhanced upload error handling middleware to:

   • Validate file types against allowed list
   • Enforce file size limitations
   • Restrict maximum file count
   • Provide detailed error responses

3. Improved error logging and reporting mechanisms

Changes Made

• Enhanced fileErrorHandler to provide more detailed error context
• Expanded upload-errors.ts with comprehensive error classes
• Added specific error handling for file type, size, and count limitations
• Implemented granular error responses for different upload failure scenarios
• Created custom error classes to distinguish between different types of upload errors

Tests

• Verify file type validation prevents unsupported file uploads
• Confirm file size limit is strictly enforced
• Test maximum file count restriction
• Validate error messages for different upload failure scenarios
• Ensure appropriate HTTP status codes are returned for specific errors

Signatures

Staking Key

3oBzgQ4y8YtmkxYGkse1fKKefi25twpMKU9BBdsYtjDQ: 6J1LeHHsMUqcxXMWPGB7CaD1HXg5eM15XxECk3hrR3o4dad2nQk4VSXa2Sn5UjvrFqrU36GdmWXpb6uob99my1pKLZCrE2o2TrvSeXJCqKF6C2PUxshMwhnYwAdkqA4L3rjeK7CcuSJdaAGaoSUDRE4nxi3mzcuYpbPvoQBAp2VhpwDcQwceBJRVFuEK1fnxkudd83pTw2oWkimUU3F4Gh1vPrkkyyfGxfzrj7Q8PcLmrnonDqGCuromtdLaWdABtoySa7qtbDk6yPrgDbTCQbUwiJqANkPAaYuDQh17YaGhUPqwzSYDhcA3GLm6bE7E5NKsmRipVVtxGEtk91GkP1gyhAXi8ZdNS598hbD6GiLdV4tUJpEXavMCrdwLmHUvdpQx9ctRUZZAHwqEPVrwD1RL5JMMKEhHN

Public Key

4WA5vRJLthsg6sJqVc6DQuRkGzvoxZ11SkqzwbqxCo2V: 3niPnUJpamBJuQ3G2bFcXDHzxzDKvLNGHVp4bp7k59h1P3VkiEtqYHZ89c63qEUYXYAN5MK4zBbtuxC1dkGmtMfStTBaa7dxL23bddp5tSffvWLR5121gWHxUB5Z1Ebw7RnM5iQNc3PUsga8DGGKSjYdmCxf1QekXpADsT5hkJmtY9ZZBAK8zXdCfhGhmDzoUxfTqjLcRN8NXLMpomFDPYRYWtM4deSLzLcsnHhoNBKpZufQ2pfPpsdt33bV8i5vQKZEj1ACjF2YGJJ1Whw7par9vpammiPAyV9zDMHNY7on6rYWMnnq9ohQdE6QLBoTR6MZ3z4nXsCTAiP5hUJ86ZC1CBpZzbSoyPbjA5ZMGb92R2mTdn6nRV9XizHSRKWsmrzmH6i5huf2oVU6XaZZa4HNWzVh164pc