using ReleaseHelper.Models;
using ReleaseHelper.Utils;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace ReleaseHelper.Services
{
    public static class Release
    {
        /// <summary>
        /// 设置更新进度
        /// </summary>
        /// <param name="max"></param>
        /// <param name="now"></param>
        public delegate void DeleSetProgress(int max, int now);


        public static async Task<string> ReleaseApplication(string username, string password, double version, 
            string objFilename, string targetOssPath, DeleSetProgress deleSetProgress)
        {
            string res = "";
            int max = 4, now=0;
            List<string> localFilenames = new List<string>() { objFilename, GetUpdateInfoFilename(objFilename) };
            // 生成版本信息文件
            await SaveLocalUpdateInfo(objFilename, version);
            deleSetProgress(max, ++now);
            // 登录
            await Login(username, password);
            deleSetProgress(max, ++now);
            // 上传相应文件到OSS服务器
            foreach (string f in localFilenames)
            {
                if (!AliyunOss.SimpleUpload($"{targetOssPath}/{Path.GetFileName(f)}", f))
                {
                    res = $"{f} 更新失败！";
                }
                deleSetProgress(max, ++now);
            }
            // 退出登录
            Logout();
            return res;
        }

        //private static async Task
        public static async Task<Models.UpdateInfo> GetLatestVersionInfo(string ossUri)
        {
            return await Api.GetUpdateInfo(ossUri);
        }

        private static async Task SaveLocalUpdateInfo(string objFilename, double version)
        {
            await Task.Run(() =>
            {
                string f = GetUpdateInfoFilename(objFilename);
                UpdateInfo info = new UpdateInfo
                {
                    MD5 = FileExtensions.FileMd5(objFilename),
                    Version = version
                };
                FileExtensions.WriteAllText(f, Json.Encode(info), Encoding.UTF8);
            });
        }

        private static string GetUpdateInfoFilename(string ObjFilename)
        {
            return Regex.Replace(ObjFilename, "\\.[^.]{2,5}$", ".txt", RegexOptions.IgnoreCase);
        }


        private static async Task Login(string username, string password)
        {
            await Api.Login(username, password);
            //await Api.GetAliyunAccess();
        }

        private static void Logout()
        {
            Variables.Variables.RequestHeaders["Authorization"] = "";
            AliyunOss.ClearAccess();
        }

    }
}