using System;
using System.IO;
using Newtonsoft.Json;
using Amazon;
using Amazon.Runtime;
using Amazon.S3;
using S3Demo.Model;
using S3Demo.Model.Uploader;
using Ksat.Supplyment.Library.Model;
using Ksat.Supplyment.Library.Uploader;
using Ksat.Supplyment.Library.Model.Uploader;
using System.Threading.Tasks;
using System.Threading;

namespace S3Demo
{
    public class Run
    {
        //private static string url = "http://172.17.204.180:9000/api/tri/trackin";
        private static BasicAWSCredentials credentials = new BasicAWSCredentials("admin", "admin123.");
        //private static BasicAWSCredentials credentials = new BasicAWSCredentials("Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");
        private static string bucketName = "minio/test";
        // 受监控的目录，完整目录如："D:\ClientDir\line01\AOI\20211129\133055851SN001.png"
        private static string[] paths = { @"D:\ClientDir" };
        private static string suffix = "*.png";

        /// <summary>
        /// https://docs.aws.amazon.com/sdkfornet/v3/apidocs/items/S3/TS3Config.html
        /// https://blog.csdn.net/tw_tangliang/article/details/118669099
        /// https://github.com/awsdocs/aws-doc-sdk-examples/blob/main/dotnetv3/S3/UploadFileMPUHighLevelAPIExample/UploadFileMPUHighLevelAPIExample/UploadFileMPUHighLevelAPI.cs
        /// </summary>

        // 通过IP + Port方式
        private static AmazonS3Config conf = new AmazonS3Config()
        {
            UseHttp = true,
            ProxyHost = "http://192.168.60.132",
            ProxyPort = 9000,
            RegionEndpoint = RegionEndpoint.USEast1
        };
        // 通过固定域名的方式
        //private static AmazonS3Config conf = new AmazonS3Config()
        //{
        //    ServiceURL = "https://play.min.io",
        //    ForcePathStyle = true
        //};
        public static AmazonS3Client client = new AmazonS3Client(credentials, conf);

        public static void Main()
        {
            try
            {
                #region 目录监控
                foreach (var path in paths)
                {
                    FileSystemWatcher watch = new FileSystemWatcher()
                    {
                        Path = path,
                        Filter = suffix,
                        IncludeSubdirectories = true,
                        NotifyFilter = NotifyFilters.LastAccess
                                     | NotifyFilters.LastWrite
                                     | NotifyFilters.FileName
                                     | NotifyFilters.DirectoryName,
                    };
                    watch.Created += OnCreated;
                    watch.Error += OnError;
                    // 开始监控
                    watch.EnableRaisingEvents = true;
                }
                #endregion

                #region 保存至数据库
                //string s3Flag = ObjectModel.Putobjectswithtags(bucketName, S3Path, e.FullPath, tags, credentials, conf).Result;
                //if (s3Flag.Equals("OK"))
                //{
                //保存至数据库
                //using (var dev = new CodeFirstDbContext())
                //    {
                //        dev.UploadFinishs.Add(new UploadFinish()
                //        {
                //            UploaderID = lineName,
                //            Tag = sn,
                //            CreateAt = dt_fomat,
                //            RetryAt = DateTime.ParseExact(now, "yyyyMMddHHmmssfff", System.Globalization.CultureInfo.CurrentCulture),
                //            RetryCount = 1,
                //            RequestData = S3Path
                //        });
                //        int dbFlag = dev.SaveChanges();//1: 保存至数据库成功，否则保存失败
                //        //TODO: 请求接口
                //        //ReqData req = new ReqData();
                //        //RespData resp = new RespData();
                //        //req.s3Flag = s3Flag;
                //        //req.dbFlag = dbFlag;
                //        //resp = JsonConvert.DeserializeObject<RespData>(HttpModel.PostUrl(url, JsonConvert.SerializeObject(req)));
                //        //Console.WriteLine("resp: " + resp.code + " " + resp.message);
                //    }

                //Console.WriteLine("S3对象存储路径: " + bucketName + "/" + S3Path);
                //}
                //else
                //{
                //    Console.WriteLine("上传未完成");
                //}

                //Uploader<string> uploader = new Uploader<string>("字符串测试", new UploaderOperator());
                //for (var i = 0; i < 5; i++)
                //{
                //    uploader.AddUploadRequest($"hello{i}", $"tag{i}");
                //}
                #endregion

                #region S3相关测试
                /*
                //creating Bucket
                //await CreateBucket.CreatingBucket("minio/bu29", credentials, conf);

                //upload Dir
                string dirPath = @"C:\Users\song\Pictures\Saved Pictures\";
                string suffix = "*.png";
                //await UploadDirMPUHighLevelAPI.Uploaderdir(bucketName, dirPath, suffix, credentials, conf);

                //upload File
                string keyName = "logo.png";
                //await UploadFileMPUHighLevelAPI.Uploaderfile(bucketName, keyName, dirPath, credentials, conf);

                //list Objects
                //await ListObjects.Listingobjects(bucketName, credentials, conf);

                //upload Object With Tag
                string filaPath = @"C:\Users\song\Pictures\Saved Pictures\" + keyName;
                String[] tags = new String[] { "SN123456", DateTime.Now.ToString("yyyy-MM-dd'T'HH:mm:sszzz"), "AB023" };
                //await ObjectModel.Putobjectswithtags(bucketName, keyName, filaPath, tags, credentials, conf);

                //read Object
                //await ObjectModel.Readobjectdata(bucketName, keyName, credentials, conf);

                //isExist Bucket
                //从"minio/test"中取出存储桶名
                var _bucketName = bucketName.Split('/')[1];
                //此处传入bucketName: "test"
                //var flag = await BucketModel.isExistBucket(_bucketName, credentials, conf);
                //if (flag)
                //{
                //    Console.WriteLine("exist");
                //}
                //else
                //{
                //    Console.WriteLine("not exist");
                //    //docker创建buckeyt时此处传入BucketName: "minio/test"
                //    //play.min.io创建buckeyt时传入BucketName: "test"
                //    await BucketModel.CreateBucket(bucketName, credentials, conf);
                //}

                ////删除桶：docker删除桶"minio/test"; play.min.io删除桶"test"
                //await new AmazonS3Client(credentials, conf).DeleteBucketAsync(bucketName);
                //Console.WriteLine("delete bucket " + bucketName);
                */
                #endregion
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Main: {ex.Message}");
            }

            Console.ReadKey();
        }
        #region 上传测试
        public class UploaderOperator : IUploaderOperator<string>
        {
            public string ConvertCacheToRequest(string cache)
            {
                return cache;
            }

            public string ConvertRequestToCachel(string requestData)
            {
                return requestData;
            }

            public bool ShouldRetryRequest(UploadModel<string> requestModel, out string cancelReason)
            {
                cancelReason = null;
                if (requestModel.RetryCount >= 2)
                {
                    cancelReason = "已经两次fail了";
                    return false;
                }
                return true;
            }

            public bool ShouldStartRequest(UploadModel<string> requestModel, out string cancelReason)
            {
                cancelReason = null;
                return true;
            }

            public IUploaderRequest<string> UploadData(string data)
            {
                var request = new UploadRequest();
                request.RequestData = data;
                return request;
            }
        }
        public class UploadRequest : IUploaderRequest<string>
        {
            private string mRequestData;
            public string RequestData { get => mRequestData; set => mRequestData = value; }

            public event UploadFinishHandler UploadFinish;

            public void Start()
            {
                Console.WriteLine($"{DateTime.UtcNow.ToString("mm:ss.fff")} task {RequestData} Started");
                System.Threading.Thread.Sleep(100);
                var random = new Random();

                UploadFinish(this, random.Next() % 2 == 0, "task failed");
            }

            public void Cancel()
            {
            }
        }
        #endregion

        /// <summary>
        /// 创建文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static async void OnCreated(object sender, FileSystemEventArgs e)
        {
            Waiting(e.FullPath);
            await DisposeFile(e.FullPath);
        }
        /// <summary>
        /// 等待onCreated事件处理完成
        /// </summary>
        /// <param name="path">被创建的文件路径</param>
        private static void Waiting(string path)
        {
            try
            {
                FileInfo fi;
                fi = new FileInfo(path);
                long len1, len2;
                len2 = fi.Length;
                do
                {
                    len1 = len2;
                    Thread.Sleep(1000);//等待1秒钟
                    fi.Refresh();//这个语句不能漏了
                    len2 = fi.Length;
                } while (len1 < len2);
            }
            catch { }
        }

        /// <summary>
        /// 处理文件
        /// </summary>
        /// <param name="path">文件路径</param>
        /// <returns></returns>
        private static async Task DisposeFile(string path)
        {
            // D:\ClientDir\line01\AOI\20211129\085023891P107CN14T00001.png
            string lineName = Path.GetDirectoryName(path).Split('\\')[2];
            string equipmentName = Path.GetDirectoryName(path).Split('\\')[3];
            string date = Path.GetDirectoryName(path).Split('\\')[4];
            string fileName = Path.GetFileName(path);
            string datetime = date + fileName.Substring(0, 9);
            string dt_fomat = DateTime.ParseExact(datetime, "yyyyMMddHHmmssfff", System.Globalization.CultureInfo.CurrentCulture).ToString("yyyy-MM-dd HH:mm:ss:fff");
            string sn = fileName.Substring(9, 14);
            string now = DateTime.Now.ToString("yyyyMMddHHmmssfff");
            String[] tags = new String[] { sn, dt_fomat };
            string S3Path = lineName + "/" + equipmentName + "/" + date + "/" + fileName;
            string recv = await ObjectModel.PutObjectsWithTagsAsync(client, bucketName, S3Path, path, tags);
            Console.WriteLine("recv from S3: " + recv);
            //引入统一上传方式
            //new S3Uploader(lineName).AddUploadTask(S3Path, sn);
        }

        /// <summary>
        /// 出现错误
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void OnError(object sender, ErrorEventArgs e) =>
            PrintException(e.GetException());
        /// <summary>
        /// 打印错误
        /// </summary>
        /// <param name="ex"></param>
        private static void PrintException(Exception ex)
        {
            if (ex != null)
            {
                Console.WriteLine($"Message: {ex.Message}");
                Console.WriteLine("Stacktrace:");
                Console.WriteLine(ex.StackTrace);
                Console.WriteLine();
                PrintException(ex.InnerException);
            }
        }
    }
}