Refactor: extract resolvePostcode method and introduce explaining variables in Address

[akanksharaut2662-rgb]

Summary

Two small refactoring improvements in Address.java:

1. Extracted a private resolvePostcode() method shared by zipCode(), postcode(), and eircode()
2. Introduced explaining variables for magic numbers in latitude() and longitude()

Reason for Refactoring:

• zipCode(), postcode(), and eircode() had identical method bodies causing code duplication. Any future change would need to be made in three places
• latitude() and longitude() used raw numeric literals (180, 90, 360) with no explanation of what they represent geographically

Changes Made:

1. Address.java - Extract Method
   Extracted duplicated postcode resolution logic from zipCode(), postcode(), and eircode() into a shared private method resolvePostcode().

2. Address.java - Introduce Explaining Variables
   Replaced magic numbers in latitude() and longitude() with clearly named variables. These variables clarify the meaning of the numeric values used in the geographic calculations.

Testing:

1. No behavior change
2. All existing tests pass

Notes:

This PR contains only structural refactoring improvements to improve readability and maintainability without altering application behavior.

[what-the-diff]

PR Summary

• Centralizing Postcode Retrieval
  The process to fetch postcode information was used in multiple places. This PR has improved the system by centralizing this in a new method called resolvePostcode(). This helps in maintaining the code more effectively by eliminating repetition.

• Enhanced Geolocation Calculations
  The system used to calculate latitude and longitude has been updated. Instead of using hard-to-understand numerical values, we have switched to using understandable named constants like latitudeRange, latitudeOffset, longitudeRange, longitudeOffset. This enhances the readability of our code and makes it easier to maintain or modify these values in the future.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.44%. Comparing base (66aeb85) to head (9fa80a2).
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Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1777      +/-   ##
============================================
+ Coverage     92.37%   92.44%   +0.06%     
- Complexity     3448     3451       +3     
============================================
  Files           339      339              
  Lines          6794     6801       +7     
  Branches        670      670              
============================================
+ Hits           6276     6287      +11     
+ Misses          353      351       -2     
+ Partials        165      163       -2     

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[Copilot]

Pull request overview

Refactors Address provider methods to reduce duplication and improve readability without changing behavior.

Changes:

• Extracted shared postcode generation logic into a private resolvePostcode() helper used by zipCode(), postcode(), and eircode().
• Replaced numeric literals in latitude() and longitude() with explaining local variables.

[bodiam]

AI PR