Add digit handling for country-specific currencies

[kohe]

All Submissions:

• Does your code follow the WooCommerce Sniffs variant of WordPress coding standards?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?
• Will this change require new documentation or changes to existing documentation?

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Changes proposed in this Pull Request:

This pull request adds digit handling for country-specific currencies, addressing an issue with Japanese Yen (JPY) credit card transactions. It ensures correct handling for currencies that do not require division by 100.

Closes # .

Steps to test the changes in this Pull Request:

1. Attempt a credit card transaction using Japanese Yen.
2. Verify that the amount is not divided by 100 and is processed correctly.
3. Test with other currencies to ensure no regression.

Changelog entry

Add - Digit handling for country-specific currencies to prevent incorrect division by 100 for currencies like Japanese Yen.

[dkotter]

Looks like some formatting issues here that need cleaned up, likely a tabs vs spaces thing

[kohe]

Replaced spaces with tabs. Please review when you have a moment.

[dkotter]

There are some additional lint errors that need cleaned up. See https://github.com/woocommerce/woocommerce-square/actions/runs/13407493861/job/37497707380?pr=288

[kohe]

I have fixed the code to resolve the lint errors. Please review it again.

[qasumitbagthariya]

QA Update: ⚠️

@kohe

I created a Japan sandbox and attempted to reproduce the issue, but I wasn't able to replicate it.

I purchased a product priced at 100, reviewed the order page, and also checked the Square transaction. The amount wasn't split or altered—it remained 100 as expected, and I didn't notice any discrepancies.

Please correct me if I’m missing something, and if possible, could you provide detailed steps to reproduce the issue?

Screen.Recording.2025-02-24.at.6.12.03.PM.mov

Testing Environment

• WordPress: 6.7.2
• Theme: Twenty Twenty-Four 1.3
• WooCommerce - 9.6.2
• PHP: 8.0.30
• Web Server: Nginx 1.20.2
• Browser: Chrome
• OS: macOS 15.2
• Square Branch: trunk

[kohe]

@qasumitbagthariya Thank you for checking. The error doesn't occur with 100 yen because it's divisible by 100. Please try making a payment with an amount that isn't divisible by 100, such as 90 yen or 150 yen. Since these would contain decimal points when processed, Square should reject these transactions.