Add solution for gin challenge-2-middleware by imankhodadi

[imankhodadi]

gin challenge-2-middleware Solution

Submitted by: @imankhodadi
Package: gin
Challenge: challenge-2-middleware

Description

This PR contains my solution for gin challenge-2-middleware.

Changes

• Added solution file to packages/gin/challenge-2-middleware/submissions/imankhodadi/solution.go

Testing

• Solution passes all test cases
• Code follows Go best practices

Thank you for reviewing my submission! 🚀

[coderabbitai]

Walkthrough

A new Gin-based HTTP API implementation for article management with in-memory storage, authentication, rate limiting, and CRUD endpoints. Includes middleware stack for request IDs, logging, CORS, authorization, rate limiting, and error handling.

Changes

Cohort / File(s)	Summary
Article Management API packages/gin/challenge-2-middleware/submissions/imankhodadi/solution.go	New implementation of a Gin HTTP server with Article and APIResponse data models. Includes middleware stack (RequestID, Logging, Auth, CORS, RateLimit, ContentType, ErrorHandler), CRUD handlers for articles, authentication via API key, per-IP rate limiting (100 req/min), admin-only stats endpoint, and thread-safe in-memory article storage.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• Add solution for gin challenge-2-middleware by Kinsue  #898: Implements identical Article service with the same middleware stack, CRUD handlers, authentication, and rate limiting logic in the same package path.
• Add gin challenge 2 solution by father-frog #658: Adds nearly identical Gin solution file with matching Article/APIResponse types and middleware/handler implementations in the same challenge directory.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 5.56% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: adding a solution for the gin challenge-2-middleware by imankhodadi.
Description check	✅ Passed	The description is directly related to the changeset, explaining the solution submission, the file location, and testing status.

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