fix: Added Locale.ENGLISH to SimpleDateFormat for parsing the Last-Modified HTTP header

[kuaikuai]

Added Locale.ENGLISH to SimpleDateFormat for parsing the Last-Modified HTTP header. This makes the date parsing locale - specific to English, avoiding possible parsing issues caused by default locale differences.

[gemini-code-assist]

Summary of Changes

Hello @kuaikuai, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the reliability of date parsing within the GoFeatureFlagApi by explicitly setting the locale to English when interpreting the Last-Modified HTTP header. This ensures that date strings, which are standardized to an English format in HTTP, are correctly parsed regardless of the JVM's default locale, thereby preventing unexpected parsing failures and improving the stability of the API's interaction with HTTP responses.

Highlights

• Locale Specification for Date Parsing: Explicitly added Locale.ENGLISH to the SimpleDateFormat constructor used for parsing the Last-Modified HTTP header.
• Improved Robustness: This change prevents potential ParseException errors that could arise from variations in the default system locale when interpreting date strings from HTTP headers, ensuring consistent parsing behavior.

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[gemini-code-assist]

Code Review

This pull request correctly addresses a potential locale-dependent parsing issue for the Last-Modified HTTP header by specifying Locale.ENGLISH. This is a good improvement. My review includes a suggestion to further modernize the code by replacing the legacy SimpleDateFormat with the java.time API, which is more robust and thread-safe. This would improve the code's maintainability and reliability.

[thomaspoignant]

@kuaikuai thanks for this PR, there is a formatter issue that blocks the CI could you have a look?

Also I've seen the gemini review and this implementation is probably better to what I've written.
If you have some time and willing to contribute to the provider by changing that it would be awesome.

If you can't this is not a problem, you can just fix the formatting part, and we can release a new version of the provider, and I will work on updating the way to read the headers later.

[thomaspoignant]

/gemini review

[gemini-code-assist]

Code Review

This pull request addresses a potential bug in parsing the Last-Modified HTTP header by replacing the locale-sensitive SimpleDateFormat with the modern java.time API. The use of DateTimeFormatter.RFC_1123_DATE_TIME is a robust solution that correctly handles the date format as specified in RFC 1123, making the parsing independent of the default system locale. This is a significant improvement in correctness and code quality. While the PR title and description mention adding Locale.ENGLISH to SimpleDateFormat, the implemented change to use java.time is a superior approach. I have one minor suggestion regarding code style.

[kuaikuai]

@kuaikuai thanks for this PR, there is a formatter issue that blocks the CI could you have a look?

Also I've seen the gemini review and this implementation is probably better to what I've written. If you have some time and willing to contribute to the provider by changing that it would be awesome.

If you can't this is not a problem, you can just fix the formatting part, and we can release a new version of the provider, and I will work on updating the way to read the headers later.

I submitted the code directly through the GitHub web interface, so it’s not easy to ensure proper formatting. I’ll make some adjustments to fix this. ^_^