// src/Webshop.Api/Controllers/Admin/FileUploadController.cs
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Threading.Tasks;
using Webshop.Application;
using Webshop.Application.DTOs;
using Webshop.Application.Services; // Namespace für den neuen Service

namespace Webshop.Api.Controllers.Admin
{
    [ApiController]
    [Route("api/v1/admin/[controller]")]
    [Authorize(Roles = "Admin")]
    public class FileUploadController : ControllerBase
    {
        private readonly IFileUploadService _fileUploadService;

        public FileUploadController(IFileUploadService fileUploadService)
        {
            _fileUploadService = fileUploadService;
        }

        [HttpPost("upload")]
        [ProducesResponseType(typeof(FileUploadResultDto), StatusCodes.Status200OK)]
        [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
        [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status500InternalServerError)]
        public async Task<IActionResult> UploadImage(IFormFile file)
        {
            var result = await _fileUploadService.UploadFileAsync(file);

            return result.Type switch
            {
                ServiceResultType.Success => Ok(result.Value),
                ServiceResultType.InvalidInput => BadRequest(new { Message = result.ErrorMessage }),
                _ => StatusCode(StatusCodes.Status500InternalServerError, new { Message = result.ErrorMessage ?? "Ein unerwarteter Fehler ist aufgetreten." })
            };
        }
    }
}