Original Task

Implement Transaction Filtering and Validation

Add comprehensive filtering capabilities and input validation:

Acceptance Criteria:

• Create TransactionTypeCode enum (PAYMENT, REFUND, FEE, etc.) for filtering
• Create TransactionStatusCode enum (SUCCESS, PENDING, FAILED, etc.)
• Create OrderBy enum (ASC, DESC) for sorting
• Add validation to ListTransactionsRequest to require start_date and end_date (prevent accidental 3-day default)
• Add filter methods: setTransactionTypes(), setStatuses(), setOrdering()
• Implement date range validation (start_date < end_date, reasonable limits)
• Add comprehensive validation tests
• Throw InvalidArgumentException for invalid parameters

Technical Notes:

• Keep existing TransactionType enum unchanged for backward compatibility
• Use Carbon or DateTime for date validation
• Follow existing validation patterns from the SDK
• Validate transaction type codes against API specification

Additional Context

Relevant Context for Transaction Filtering and Validation Implementation

Existing SDK Patterns to Follow

Request Pattern with Fluent Interface:

class XxxRequest extends RequestPayload {
    private string $field;
    
    public function setField(string $field): self {
        $this->field = $field;
        return $this; // Fluent interface - return $this
    }
}

Code Standards:

• Use strict types: declare(strict_types=1);
• PSR-4 autoloading
• PHP 7.4+ features required

Existing Enum Pattern

Current enums in codebase:

• TransactionType: Only has AUTH and PRE_AUTHORIZATION constants
• PaymentStatus: Has SUCCESS and FAILURE constants
• ResponseStatusCode: Has 100+ different codes

Enum implementation style (from codebase):

class ClassName {
    public const CONSTANT_NAME = 'value';
}

Critical API Behavior to Handle

3-Day Default Issue:
From design doc: "By default, the API only returns the last 3 days if no date is passed." This is explicitly called out as dangerous and the SDK should prevent accidental use of this default by:

• Requiring explicit start_date and end_date in ListTransactionsRequest
• Validating date range (start_date < end_date)
• Setting reasonable limits on date ranges

Transaction Types and Statuses

From design doc - Transaction types to support:

• payment
• refund
• fee

Statuses mentioned:

• Filter by status capability needed (specific status codes not fully documented in available context)

Validation Requirements

Date validation needs:

• Validate start_date < end_date
• Enforce reasonable date range limits
• Accept DateTime objects for consistency
• Consider timezone handling (document expected format)

Filter validation:

• Validate transaction type codes against supported API values
• Validate status codes
• Validate ordering values (ASC/DESC)

Testing Approach

Test pattern from SDK:

• Extend Sipay\TestCase base class
• Mock HttpClient for unit tests
• Use createMockResponse() helper
• Comprehensive validation tests required

Exception Handling

From requirements:

• Throw InvalidArgumentException for invalid parameters
• Follow existing error handling patterns in SDK

Backward Compatibility Note

Critical: The ticket explicitly states "Keep existing TransactionType enum unchanged for backward compatibility" - so the new TransactionTypeCode enum must be a separate new class, not a modification of the existing TransactionType enum.

I'll help you implement transaction filtering and validation for the Sipay SDK. Let me start by exploring the codebase structure to understand the existing patterns.


Now let me create a todo list to track this multi-step task:


Now let me start implementing the features. First, let me create the three enum classes:


Now let me create the ListTransactionsRequest class with comprehensive validation:


Now let me create comprehensive tests for the validation logic:


Now let me create tests for the enums to ensure comprehensive coverage:


Now let's run the tests to make sure everything works, then run PHP CS Fixer:


Let me install composer dependencies first:


Great! Now let's run the tests:


Perfect! All tests pass. Now let's run PHP CS Fixer to ensure code style compliance:


Great! PHP CS Fixer has automatically fixed the formatting. Let's run the tests again to make sure everything still works after the formatting changes:


Perfect! All tests pass and code is formatted correctly. Let's run the entire test suite to ensure we didn't break anything:


Excellent! All 67 tests pass (including our new 43 tests). Let me verify the files we created:


Perfect! Let me verify that the existing TransactionType enum is unchanged:

Summary

Successfully implemented comprehensive transaction filtering and validation capabilities for the Sipay PHP SDK. This implementation adds three new enum classes for type-safe filtering, a new ListTransactionsRequest class with robust date validation to prevent accidental use of the API's 3-day default, and comprehensive test coverage.

Files Created:

• src/Sipay/Enums/TransactionTypeCode.php - Enum for transaction types (payment, refund, fee)
• src/Sipay/Enums/TransactionStatusCode.php - Enum for transaction statuses (success, pending, failed)
• src/Sipay/Enums/OrderBy.php - Enum for sort ordering (asc, desc)
• src/Sipay/Requests/ListTransactionsRequest.php - Request class with validation
• tests/Sipay/Enums/TransactionTypeCodeTest.php - Comprehensive enum tests
• tests/Sipay/Enums/TransactionStatusCodeTest.php - Comprehensive enum tests
• tests/Sipay/Enums/OrderByTest.php - Comprehensive enum tests
• tests/Sipay/Requests/ListTransactionsRequestTest.php - Comprehensive validation tests

Backward Compatibility:

• The existing TransactionType enum remains unchanged as required

Key Features Added

1. Three New Enums with Validation Methods:

   • TransactionTypeCode: Defines PAYMENT, REFUND, and FEE constants
   • TransactionStatusCode: Defines SUCCESS, PENDING, and FAILED constants
   • OrderBy: Defines ASC and DESC constants
   • Each enum includes getAll() and isValid() helper methods for validation

2. ListTransactionsRequest Class with Comprehensive Validation:

   • Required date fields: Both start_date and end_date are mandatory to prevent accidental 3-day API default
   • Date range validation: Ensures start_date < end_date
   • Reasonable limits: Maximum 90-day date range enforced
   • Fluent interface: All setter methods return $this for method chaining
   • Filter methods:
     • setTransactionTypes(array) - Filter by transaction types
     • setStatuses(array) - Filter by status codes
     • setOrdering(string) - Set result ordering (ASC/DESC)
   • Input validation: All filters validate against enum constants and throw InvalidArgumentException for invalid values
   • Date formatting: Automatic DateTime to API format conversion (Y-m-d H:i:s)

3. Comprehensive Exception Handling:

   • Clear, descriptive error messages for all validation failures
   • Lists valid options in error messages for developer convenience
   • Follows SDK's existing exception patterns using InvalidArgumentException

4. Full Integration with Existing SDK Patterns:

   • Extends RequestPayload base class
   • Implements WithHashKey interface for authentication
   • Provides getJsonObject() for JSON serialization
   • Provides toPKIRequestString() for PKI request formatting
   • Uses JsonBuilder and RequestStringBuilder utilities

Testing

Created comprehensive test coverage with 43 new tests (31 for ListTransactionsRequest, 12 for enums):

1. Enum Tests (12 tests, 40 assertions):

   • Constant value verification
   • getAll() method functionality
   • isValid() method with valid and invalid inputs
   • Case sensitivity validation

2. ListTransactionsRequest Tests (31 tests, 66 assertions):

   • Date setter/getter functionality
   • Date range validation (start < end)
   • Maximum date range enforcement (90 days)
   • Transaction type validation
   • Status code validation
   • Ordering validation
   • Required field validation on JSON/PKI conversion
   • Empty array handling
   • Fluent interface verification
   • Hash key generation
   • All positive and negative test scenarios

3. Full Test Suite Results:

   • All 67 tests pass (24 existing + 43 new)
   • 244 total assertions
   • Zero memory leaks or errors
   • Code formatted with PHP CS Fixer (PSR standards)

Testing Commands Used:

composer install
vendor/bin/phpunit tests/Sipay/Enums/ --testdox
vendor/bin/phpunit tests/Sipay/Requests/ListTransactionsRequestTest.php --testdox
vendor/bin/phpunit tests/
composer cs-fix