fix(openapi): merge handlers with same route and different method

[Leo-Bourbon]

🔗 Linked issue

#1350

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

In the openapi.ts file, the paths property is generated by using Object.fromEntries on the result of a map operation on handlersMeta. However, this causes unwanted behaviour : when there are sub-paths routes that only differ by their method, only the last path is present, as it has overridden the other paths information in the final paths property.

To fix this, I am now creating the paths object and merging the sub-paths using Array.reduce on handlersMeta instead. The operations inside this reduce are still the same as the ones inside the previous map implementation.
What has changed is that now instead of returning an array of the route and its path, I now check if the accumulated value, (the total paths object), has the current route as a property. If it does not, I add the route property and the corresponding route information. If it does, I merge the current route information with the information already present for this route.

Resolves #1350

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly. - N/A

[codecov]

Codecov Report

Merging #1497 (3de1978) into main (fddf57e) will increase coverage by 0.07%.
Report is 25 commits behind head on main.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1497      +/-   ##
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+ Coverage   76.25%   76.33%   +0.07%     
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  Files          73       73              
  Lines        7453     7550      +97     
  Branches      733      744      +11     
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+ Hits         5683     5763      +80     
- Misses       1769     1785      +16     
- Partials        1        2       +1     

see 10 files with indirect coverage changes

[pi0]

Thanks!