feat(wangamail-csharp, wangapayfast-csharp): add initial implementations for email and payment processing clients#40
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…ons for email and payment processing clients - Introduced `GraphMailClient` and `GraphMailClientBuilder` for sending emails via Microsoft Graph API. - Added `PayFastClient` and `PayFastClientBuilder` for building PayFast checkout payloads and signatures. - Implemented models for email and payment requests, including validation and error handling. - Created unit tests for both clients to ensure functionality and error handling. - Added README files for both libraries to provide usage instructions and features.
…TP helpers - Added `ItnNotification` class for parsing and verifying ITN payloads. - Introduced `PayFastHttpHelpers` for post-back validation and generating payment identifiers. - Enhanced `PayFastClient` with methods for ITN signature generation and verification. - Updated `PayFastModels` to include `ItnPaymentStatus` enum and `OnsiteProcessResponse` model. - Expanded README with ITN and HTTP helper usage examples. - Added unit tests for ITN signature verification and post-back validation.
…nverter - Removed the JsonStringEnumMemberName attribute from BodyType enum. - Implemented BodyTypeJsonConverter for custom serialization and deserialization of BodyType values. - Updated MessageBody to use the new BodyTypeJsonConverter for ContentType property. - Modified project file to exclude test files from compilation.
…Microsoft Graph API - Introduced `GraphMailClient` for sending emails with app registration credentials. - Added data models for email payloads, including `Message`, `MessageBody`, `Recipient`, and `SendMailRequest`. - Implemented error handling with custom exceptions: `ConfigError` and `GraphAPIError`. - Created a CLI entry point for manual checks and environment variable support. - Added unit tests to validate email payload structure. - Included package metadata and usage instructions in README.
- Introduced `System.Text.Json` namespace to `GraphModels.cs` for enhanced JSON handling capabilities.
- Modified the test commands in both `wangamail-csharp.yml` and `wangapayfast-csharp.yml` workflows to replace `--no-build` with `--no-restore`, improving efficiency by avoiding unnecessary restore operations during testing.
- Added `Xunit` namespace to `GraphModelsTests.cs` for unit testing support. - Updated project file to exclude test files from compilation, improving build efficiency.
…istency - Changed the hash conversion method in `PayFastClient` to use `Convert.ToHexString(hash).ToLowerInvariant()` for consistent lowercase output in both signature generation methods.
- Added `Xunit` namespace to `PayFastClientTests.cs` to support unit testing functionality.
- Updated `BuildSignaturePayload` and `BuildItnSignaturePayload` methods in `PayFastClient` from internal to public access, allowing for broader usage in external contexts.
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Mar 26, 2026
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GraphMailClientandGraphMailClientBuilderfor sending emails via Microsoft Graph API.PayFastClientandPayFastClientBuilderfor building PayFast checkout payloads and signatures.