Implement CVGenerator: Clean Architecture .NET Core CV/Resume Generator with PDF Templates

[Copilot]

Implements a .NET Core API for generating professional CV/resume PDFs from structured user data using selectable templates.

Architecture

Clean Architecture with 4 layers:

• Domain: Core entities (CV, PersonalInfo, Education, WorkExperience, Skill, Certification) and service interfaces
• Application: DTOs, FluentValidation validators, AutoMapper profiles, orchestration services
• Infrastructure: QuestPDF-based PDF generation with 3 templates (Modern, Classic, Creative)
• API: RESTful endpoints with Swagger/OpenAPI documentation

Dependencies flow inward: API → Infrastructure → Application → Domain

Key Components

Domain Layer

public interface ICVGeneratorService
{
    Task<byte[]> GeneratePdfAsync(CV cv, CVTemplate template);
}

public enum CVTemplate { Modern, Classic, Creative }

Application Layer

• Validation: Comprehensive rules (email format, date ranges, GPA bounds, URL validation)
• Mapping: AutoMapper profiles for DTO ↔ Entity conversion
• Services: CVService orchestrates validation, mapping, and PDF generation

Infrastructure Layer

Three QuestPDF templates with distinct layouts:

• Modern: Single-column, blue accents, professional
• Classic: Traditional centered layout, black/white, formal
• Creative: Two-column sidebar, purple accents, modern

API Endpoints

POST /api/cv/generate     # Generate PDF from CV data + template selection
GET  /api/cv/templates    # List available templates with descriptions
GET  /api/cv/health       # Health check

Technical Stack

• .NET 8.0 / ASP.NET Core Web API
• AutoMapper 12.0.1 (matching versions for DI extensions)
• FluentValidation 12.1.1
• QuestPDF 2025.7.4
• Swagger/OpenAPI

Code Quality

• Constants extracted for layout dimensions and validation limits
• Proper async/await throughout
• Structured error responses with validation details
• XML documentation for public APIs
• CodeQL scan: 0 vulnerabilities

Documentation

• README.md: Getting started, API reference, technology stack
• ARCHITECTURE.md: Clean Architecture details, SOLID principles, data flow
• API-EXAMPLES.md: Complete examples (curl, PowerShell, JavaScript, Python)

Original prompt

Design a .NET Core app called CVGenerator to collect user data, validate it, map it, and generate CVs using selectable templates. Use Clean Architecture, SOLID, DI, DTOs, AutoMapper, FluentValidation, and a PDF engine like QuestPDF. Provide folder structure, models, services, API endpoints, template examples, and best-practice code.

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