// src/Webshop.Infrastructure/Services/LocalFileStorageService.cs
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using System;
using System.IO;
using System.Threading.Tasks;
using Webshop.Domain.Interfaces;

namespace Webshop.Infrastructure.Services
{
    public class LocalFileStorageService : IFileStorageService
    {
        private readonly IWebHostEnvironment _env;
        private readonly IHttpContextAccessor _httpContextAccessor;

        public LocalFileStorageService(IWebHostEnvironment env, IHttpContextAccessor httpContextAccessor)
        {
            _env = env;
            _httpContextAccessor = httpContextAccessor;
        }

        public async Task<string> SaveFileAsync(Stream fileStream, string fileName, string contentType)
        {
            // Erstelle einen eindeutigen Dateinamen, um Kollisionen zu vermeiden
            var fileExtension = Path.GetExtension(fileName);
            var uniqueFileName = $"{Guid.NewGuid()}{fileExtension}";

            // Definiere den Speicherort im wwwroot-Ordner
            var uploadsFolderPath = Path.Combine(_env.WebRootPath, "uploads");
            if (!Directory.Exists(uploadsFolderPath))
            {
                Directory.CreateDirectory(uploadsFolderPath);
            }

            var filePath = Path.Combine(uploadsFolderPath, uniqueFileName);

            // Speichere den Stream in die Datei
            await using (var outputStream = new FileStream(filePath, FileMode.Create))
            {
                await fileStream.CopyToAsync(outputStream);
            }

            // Erstelle die öffentliche URL
            var request = _httpContextAccessor.HttpContext.Request;
            var baseUrl = $"{request.Scheme}://{request.Host}";
            var fileUrl = $"{baseUrl}/uploads/{uniqueFileName}";

            return fileUrl;
        }
    }
}