Codex Interview Practice

A .NET interview practice repository used for coding exercises, API design, pull request workflows, and AI-assisted code review using Codex.

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🚀 Current Project

Minimal ASP.NET Core Web API for Order Management.

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✨ Features

• Create order
• Get all orders
• Get order by id
• Delete order
• Swagger (OpenAPI) integration
• Service layer with validation
• Clean minimal API design

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🛠 Tech Stack

• C#
• ASP.NET Core Web API
• Swagger / OpenAPI
• VS Code
• Git & GitHub
• Codex (AI-assisted code review)

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📁 Project Structure

src/
  InterviewPracticeApi/
tests/
AGENTS.md
README.md
.gitignore
codex-interview-practice.sln

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▶️ Run Locally

dotnet restore
dotnet run --project src/InterviewPracticeApi/InterviewPracticeApi.csproj

Then open Swagger:

https://localhost:xxxx/swagger

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📡 API Endpoints

GET /

Health endpoint

GET /orders

Returns all orders

GET /orders/{id}

Returns order by id

POST /orders

Creates a new order

Example request:

{
  "customerName": "Kiran",
  "productName": "Laptop",
  "amount": 75000
}

DELETE /orders/{id}

Deletes order by id

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🤖 Codex Review Workflow

This project demonstrates AI-assisted code review using Codex.

Workflow

1. Create feature branch
2. Implement changes
3. Push code to GitHub
4. Open Pull Request
5. Run Codex review
6. Apply improvements
7. Re-run review

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🔍 What Codex Reviews

• Code quality
• API design
• Validation and error handling
• HTTP status code correctness
• Performance considerations
• Interview-level improvements

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🧪 Example Codex Prompts

Review this pull request for:
- API design
- validation gaps
- status code correctness
- code quality

Act as a senior .NET backend engineer and review this PR.

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📸 API Demo

📸 Codex Review Summary

📸 Detailed Review Output

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💡 Purpose

This repository is designed to simulate a real engineering workflow:

1. Write code
2. Push changes
3. Open Pull Request
4. Review using Codex
5. Improve code based on feedback

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🎯 Why This Project Matters

• Demonstrates real-world backend development
• Shows clean API design practices
• Highlights code review workflow
• Integrates AI-assisted engineering (Codex)
• Useful for senior .NET interview preparation