using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DocumentFormat.OpenXml.Spreadsheet;

namespace GB5Shared.FileUpload
{
    public class FileStorage
    {
        private readonly string _root;

        public FileStorage()
        {
            // WINDOWS UNC PATH TO SERVER B
            _root = @"\\172.16.200.39\E$\Unisoft\GB5Index";
            Directory.CreateDirectory(_root);
        }

        public async Task<string> SaveAsync(Stream stream, string fileName, string folder)
        {
            try
            {
                var id = Guid.NewGuid().ToString();

                var dir = Path.Combine(_root, folder);
                Directory.CreateDirectory(dir);

                var fullPath = Path.Combine(dir, $"{id}_{fileName}");

                using var fs = new FileStream(
                    fullPath,
                    FileMode.Create,
                    FileAccess.Write,
                    FileShare.None
                );

                await stream.CopyToAsync(fs);
                return id;
            }
            catch (Exception ex)
            {
                throw new Exception("Error saving file", ex);
            }
        }
    }
    public class UploadResponse
    {
        public bool Success { get; set; }
        public string FileId { get; set; } = "";
        public string Message { get; set; } = "";

        public static UploadResponse Ok(string id) =>
            new() { Success = true, FileId = id, Message = "File saved" };

        public static UploadResponse Fail(string msg) =>
            new() { Success = false, Message = msg };
    }
}