* Use DateTime.UtcNow consistently instead of DateTime.Now to avoid timezone issues when comparing times.
* In App.cs, handle the scenario where HeartBeatInterval is 0 more explicitly to avoid incorrect alert generation.
* In App.cs, log or provide more informative error when HeartBeatInterval parsing fails.
* Add comments to clarify the logic regarding EmailSent flag usage.
* In Program.cs, change 'Builder' to 'HostBuilder' or clarify the Builder class usage; it seems unusual to name it 'Builder'.
* In Program.cs, the use of GetAwaiter().GetResult() can cause deadlocks in some scenarios; use async/await consistently.
* Add cancellation support in async methods if possible (not critical but recommended as best practice).
* Minor code style: consider using explicit class declaration instead of record-like primary constructor for App if more methods or fields are expected in the future.
These changes improve code clarity, robustness, and future maintainability.
* HeartBeatClient/Core/App.cs: Use DateTime.UtcNow instead of DateTime.Now for time comparison to avoid issues with time zones and daylight saving.
* HeartBeatClient/Core/App.cs: Simplify GetLastUpdateDate method by removing unnecessary list and returning single ResultModel directly.
* HeartBeatClient/Core/App.cs: Add null check after parsing heartBeatInterval to handle invalid configurations gracefully.
* HeartBeatClient/Core/App.cs: Consider injecting ILogger for proper logging instead of silent fallback to string.Empty for connection string.
* HeartBeatClient/Core/App.cs: Mark constants or magic strings as readonly static or move to configuration for easier management.
* HeartBeatClient/Program.cs: Use logging instead of Console.WriteLine for exception details to align with best practices in .NET apps.
* HeartBeatClient/Program.cs: Make sure Syncfusion license key is securely stored, e.g. environment variable or secure vault instead of hardcoded string.
* HeartBeatClient/Program.cs: Add ConfigureAwait(false) in awaited calls if library is used in non-UI context for performance.
* Add null checks and validations for configuration values to prevent exceptions if configuration is missing or invalid.
* Set IsBodyHtml property based on EmailModel to allow HTML emails.
* Dispose of attachments after sending the email to prevent resource leaks.
* Use asynchronous SendMailAsync method instead of synchronous Send to avoid blocking.
* Add exception handling for better resilience and logging opportunities.
* Validate email addresses before adding to avoid potential exceptions.
* Consider configuring EnableSsl based on configuration instead of hardcoding.
Changed file: HeartBeatClient/Services/EmailGeneratorService.cs
