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Generate API Documentation

Generate comprehensive API documentation for ASP.NET Core Web API endpoints.

Documentation Requirements:

Endpoint Summary

• Clear, concise summary (one line)
• Detailed description (2-3 sentences explaining purpose and use case)
• Tags for grouping related endpoints

Parameters

• Path parameters with types and descriptions
• Query parameters with defaults and examples
• Request body schema with property descriptions
• Mark required vs optional parameters clearly

Response Documentation

• Success response (200, 201, etc.) with example JSON
• Error responses (400, 404, 500) with example error messages
• Schema definitions for complex objects

Request/Response Examples

• Realistic example data using BudgetWise domain
• Show actual expense descriptions, categories, amounts
• Include edge cases in examples (empty lists, null values)

Security & Authentication

• Note if endpoint requires authentication
• Specify required permissions or roles

ASP.NET Core API Standards

• Use camelCase for JSON properties
• Include pagination details for list endpoints
• Document rate limiting if applicable
• Mention any deprecation warnings

Example Structure:

paths:
  /api/expenses/{id}:
    get:
      summary: Get expense by ID
      description: Retrieves detailed information about a specific expense including amount, category, date, and notes
      tags:
        - Expenses
      parameters:
        - name: id
          in: path
          required: true
          description: Unique identifier of the expense (GUID)
          schema:
            type: string
            format: uuid
      responses:
        200:
          description: Expense found successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Expense'
              example:
                id: "3fa85f64-5717-4562-b3fc-2c963f66afa6"
                userId: "demo-user-001"
                description: "Grocery shopping at Whole Foods"
                amount: 127.50
                category: "Food & Dining"
                date: "2024-12-08T10:30:00Z"
                notes: "Weekly groceries"
                createdAt: "2024-12-08T10:35:00Z"
        404:
          description: Expense not found
          content:
            application/json:
              example:
                message: "Expense with ID 3fa85f64-5717-4562-b3fc-2c963f66afa6 not found"

Generate complete API documentation (Swagger/OpenAPI format) for the selected ASP.NET Core controller method.