using Microsoft.AspNetCore.Mvc;
using StitcherApi.Models;
using StitcherApi.Services;

namespace StitcherApi.Controllers;

public static class ImageController
{
    public static void MapImageEndpoints(this IEndpointRouteBuilder app)
    {
        var group = app.MapGroup("/api/image");

        group.MapPost(
            "/generate",
            async (
                [FromBody] GenerateImageRequest request,
                [FromServices] IImageService imageService
            ) =>
            {
                try
                {
                    var imageBytes = await imageService.GenerateImageAsync(request);
                    return Results.File(imageBytes, "image/png");
                }
                catch (FileNotFoundException ex)
                {
                    return Results.Problem(
                        detail: ex.Message,
                        statusCode: StatusCodes.Status404NotFound
                    );
                }
                catch (ArgumentException ex)
                {
                    return Results.Problem(
                        detail: ex.Message,
                        statusCode: StatusCodes.Status400BadRequest
                    );
                }
                catch (Exception)
                {
                    // In a real app, log the exception here.
                    return Results.Problem(
                        detail: "An internal error occurred.",
                        statusCode: StatusCodes.Status500InternalServerError
                    );
                }
            }
        );
    }
}