using Microsoft.AspNetCore.Mvc;
using eprintServer.Requests;


namespace ImglyNanoBana.Api.Controllers
{
    [ApiController]
    [Route("api/[controller]")]
    public class UploadController : ControllerBase
    {
        private readonly IWebHostEnvironment _environment;
       ILogger<UploadController> _logger;

        public UploadController(
            IWebHostEnvironment environment,
            ILogger<UploadController> logger)
        {
            _environment = environment;
            _logger = logger;
        }

        [HttpPost("store-image")]
        public async Task<IActionResult> StoreImage([FromBody] UploadRequest request)
        {
            try
            {
                var uploadsFolder = Path.Combine(_environment.WebRootPath, "uploads");
                Directory.CreateDirectory(uploadsFolder);

                var fileName = $"{Guid.NewGuid()}.png";
                var filePath = Path.Combine(uploadsFolder, fileName);

                // Download and save image from URL or base64
                if (request.ImageUrl.StartsWith("data:"))
                {
                    var base64Data = request.ImageUrl.Split(',')[1];
                    var imageBytes = Convert.FromBase64String(base64Data);
                    await System.IO.File.WriteAllBytesAsync(filePath, imageBytes);
                }
                else
                {
                    using var httpClient = new HttpClient();
                    var imageBytes = await httpClient.GetByteArrayAsync(request.ImageUrl);
                    await System.IO.File.WriteAllBytesAsync(filePath, imageBytes);
                }

                var permanentUrl = $"{Request.Scheme}://{Request.Host}/uploads/{fileName}";

                return Ok(new UploadResponse
                {
                    PermanentUrl = permanentUrl,
                    FileName = fileName,
                    UploadedAt = DateTime.UtcNow
                });
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error storing image");
                return StatusCode(500, new { error = ex.Message });
            }
        }
    }
}