using Microsoft.Extensions.Logging;
using StellaOps.Microservice;

namespace Examples.Inventory.Microservice.Endpoints;

/// <summary>
/// Request model for getting a single inventory item.
/// </summary>
public sealed record GetItemRequest
{
    public required string Sku { get; init; }
}

/// <summary>
/// Response model for a single inventory item with details.
/// </summary>
public sealed record GetItemResponse
{
    public required string Sku { get; init; }
    public required string Name { get; init; }
    public required string Description { get; init; }
    public required string Category { get; init; }
    public required int QuantityOnHand { get; init; }
    public required int ReorderPoint { get; init; }
    public required decimal UnitPrice { get; init; }
    public required string Location { get; init; }
    public required DateTime LastUpdated { get; init; }
}

/// <summary>
/// Endpoint for getting a single inventory item by SKU.
/// Demonstrates path parameter extraction.
/// </summary>
[StellaEndpoint("GET", "/items/{sku}", TimeoutSeconds = 10)]
public sealed class GetItemEndpoint : IStellaEndpoint<GetItemRequest, GetItemResponse>
{
    private readonly ILogger<GetItemEndpoint> _logger;

    public GetItemEndpoint(ILogger<GetItemEndpoint> logger)
    {
        _logger = logger;
    }

    public Task<GetItemResponse> HandleAsync(
        GetItemRequest request,
        CancellationToken cancellationToken)
    {
        _logger.LogInformation("Fetching inventory item {Sku}", request.Sku);

        // Simulate item lookup
        return Task.FromResult(new GetItemResponse
        {
            Sku = request.Sku,
            Name = "Widget A",
            Description = "A high-quality widget for general purpose use",
            Category = "widgets",
            QuantityOnHand = 100,
            ReorderPoint = 25,
            UnitPrice = 9.99m,
            Location = "Warehouse A, Aisle 3, Shelf 2",
            LastUpdated = DateTime.UtcNow.AddHours(-2)
        });
    }
}