using Bootstrap.DataAccess;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System;
using System.IO;
using System.Threading.Tasks;

namespace Bootstrap.Admin.Controllers.Api
{
    /// <summary>
    /// 
    /// </summary>
    [Route("api/[controller]")]
    [ApiController]
    public class ProfilesController : ControllerBase
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="env"></param>
        /// <param name="files"></param>
        /// <returns></returns>
        [HttpPost]
        public async Task<JsonResult> Post([FromServices]IHostingEnvironment env, IFormCollection files)
        {
            var previewUrl = string.Empty;
            long fileSize = 0;
            var userName = User.Identity.Name;
            var error = string.Empty;
            var fileName = string.Empty;
            if (User.IsInRole("Administrators")) userName = "default";
            if (files.Files.Count > 0)
            {
                var uploadFile = files.Files[0];
                var webSiteUrl = DictHelper.RetrieveIconFolderPath();
                fileName = string.Format("{0}{1}", userName, Path.GetExtension(uploadFile.FileName));
                var fileUrl = string.Format("{0}{1}", webSiteUrl, fileName);
                var filePath = Path.Combine(env.WebRootPath, webSiteUrl.Replace("~", string.Empty).Replace("/", "\\").TrimStart('\\') + fileName);
                var fileFolder = Path.GetDirectoryName(filePath);
                fileSize = uploadFile.Length;
                if (!Directory.Exists(fileFolder)) Directory.CreateDirectory(fileFolder);
                using (var fs = new FileStream(filePath, FileMode.Create))
                {
                    await uploadFile.CopyToAsync(fs);
                }
                previewUrl = string.Format("{0}?q={1}", Url.Content(fileUrl), DateTime.Now.Ticks);
                UserHelper.SaveUserIconByName(userName, fileName);
            }
            else
            {
                // delete file
                fileName = files["key"];
                if (!fileName.Equals("default.jpg"))
                {
                    fileName = Path.Combine(env.WebRootPath, $"images\\uploader\\{fileName}");
                    try
                    {
                        if (System.IO.File.Exists(fileName)) System.IO.File.Delete(fileName);
                        fileName = "default.jpg";
                        UserHelper.SaveUserIconByName(userName, fileName);
                    }
                    catch (Exception ex)
                    {
                        error = ex.Message;
                    }
                }
            }
            return new JsonResult(new
            {
                error = string.IsNullOrEmpty(error) ? error : $"服务器端错误-{error}",
                initialPreview = new string[] { previewUrl },
                initialPreviewConfig = new object[] {
                    new { caption = "新头像", size = fileSize, showZoom = true, key = fileName }
                },
                append = false
            });
        }
    }
}