using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Yi.Framework.Common.Models;
using Yi.Framework.Interface;
using Yi.Framework.WebCore;

namespace Yi.Framework.ApiMicroservice.Controllers
{
    [Route("api/[controller]/[action]")]
    [ApiController]
    public class FileController : ControllerBase
    {
        private IUserService _userService;
        private readonly IHostEnvironment _env;
        public FileController(IUserService userService, IHostEnvironment env)
        {
            _userService = userService;
            _env = env;
        }
        [HttpPost]
        [Authorize]
        public async Task<Result> EditIcon(IFormFile file)
        {
            try
            {
                var _user = HttpContext.GetCurrentUserInfo();
                var user_data = await _userService.GetUserById(_user.id);
                var type = "image";
                var filename = await Upload(type, file);
                user_data.icon = filename;
                await _userService.UpdateAsync(user_data);
                return Result.Success();
            }
            catch
            {
                return Result.Error();
            }
        }

        [Route("/api/{type}/{fileName}")]
        [HttpGet]
        public IActionResult Get(string type, string fileName)
        {
            try
            {
                var path = Path.Combine($"wwwroot/{type}", fileName);
                var stream = System.IO.File.OpenRead(path);
                var MimeType = Common.Helper.MimeHelper.GetMimeMapping(fileName);
                return new FileStreamResult(stream, MimeType);
            }
            catch
            {
                return new NotFoundResult();
            }
        }

        /// <summary>
        /// 该方法不对外暴露
        /// </summary>
        /// <param name="type"></param>
        /// <param name="file"></param>
        /// <returns></returns>
        private async Task<string> Upload(string type, IFormFile file)
        {
            string filename = Guid.NewGuid().ToString() + Path.GetExtension(file.FileName);
            using (var stream = new FileStream(Path.Combine($"wwwroot/{type}", filename), FileMode.CreateNew, FileAccess.Write))
            {
                await file.CopyToAsync(stream);
            }

            return filename;
        }

        [HttpGet]
        public async Task<IActionResult> ExportFile()
        {
            var userdata = await _userService.GetAllEntitiesTrueAsync();
            var userList = userdata.ToList();
            List<string> header = new() { "用户", "密码", "头像", "昵称", "邮箱", "ip", "年龄", "个人介绍", "地址", "手机", "角色" };
            var filename = Common.Helper.ExcelHelper.CreateExcelFromList(userList, header, _env.ContentRootPath.ToString());
            var MimeType = Common.Helper.MimeHelper.GetMimeMapping(filename);
            return new FileStreamResult(new FileStream(Path.Combine(_env.ContentRootPath+@"/wwwroot/Excel", filename), FileMode.Open),MimeType);
        }
    }
}