using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using TEAMModelOS.SDK.DI;
using TEAMModelOS.SDK.Models.Cosmos.BI;
using Azure.Storage.Blobs.Models;
using Azure;
using Azure.Storage.Sas;
using System.Linq;
using Azure.Storage.Blobs.Specialized;
using System.Web;

namespace TEAMModelOS.SDK.Models.Service
{
    public class BatchCopyFileService
    {
        /// <summary>
        /// 执行批量复制操作方法
        /// </summary>
        /// <param name="_dingDing"></param>
        /// <param name="_azureStorage"></param>
        /// <param name="batchCopyFile"></param>
        /// <returns></returns>
        public static async Task<int> CopyFile(DingDing _dingDing,AzureStorageFactory _azureStorage, BatchCopyFile batchCopyFile) 
        {

            try
            {
                List<Task<CopyFromUriOperation>> filelist = new();   //可复制256M以上文件
                //List<Task<Response<BlobCopyInfo>>> filelist = new();  //复制256M以下文件
                var azureClient = _azureStorage.GetBlobContainerClient($"{batchCopyFile.blobCntr}");//获取容器连接地址

                //先删除原有的文件
                List<Task<Response<bool>>> DelList = new();
                await foreach (BlobItem blobItem in azureClient.GetBlobsAsync(BlobTraits.None, BlobStates.None, $"yxpt/{batchCopyFile.newFileName}/"))
                {
                    DelList.Add(azureClient.GetBlobBaseClient(blobItem.Name).DeleteIfExistsAsync());
                }

                if (DelList.Count <= 256)
                {
                    await Task.WhenAll(DelList);
                }
                else
                {
                    int pages = (DelList.Count + 255) / 256;
                    for (int i = 0; i < pages; i++)
                    {
                        List<Task<Response<bool>>> delList = DelList.Skip((i) * 256).Take(256).ToList();
                        await Task.WhenAll(delList);
                    }
                }

                //查询目录下所有容器路径
                await foreach (BlobItem blobItem in azureClient.GetBlobsAsync(BlobTraits.None, BlobStates.None, $"yxpt/{batchCopyFile.oldFileName}/"))
                {
                    string newurl = $"{blobItem.Name}".Replace($"/{batchCopyFile.oldFileName}/", $"/{batchCopyFile.newFileName}/");//替换成新的容器路径
                    var urlSas = _azureStorage.GetBlobSAS($"{batchCopyFile.blobCntr}", blobItem.Name, BlobSasPermissions.Read | BlobSasPermissions.List);   //获取容器sas和有效期
                    filelist.Add(azureClient.GetBlobClient(newurl).StartCopyFromUriAsync(new Uri(urlSas.fullUri)));    //可复制256M以上文件
                    //filelist.Add(azureClient.GetBlobClient(newurl).SyncCopyFromUriAsync(new Uri(urlSas)));  //添加复制文件到集合执行复制操作  复制256M以下文件
                }
                if (filelist.Count <= 256)
                {
                    await Task.WhenAll(filelist);
                }
                else
                {
                    int pages = (filelist.Count + 255) / 256;
                    for (int i = 0; i < pages; i++)
                    {
                        List<Task<CopyFromUriOperation>> rspBlobCopyInfos = filelist.Skip((i) * 256).Take(256).ToList(); //可复制256M以上文件
                        //List<Task<Response<BlobCopyInfo>>> rspBlobCopyInfos = filelist.Skip((i) * 256).Take(256).ToList(); //复制256M以下文件
                        await Task.WhenAll(rspBlobCopyInfos);
                    }
                }

                return 200;
            }
            catch (Exception ex)
            {
                await _dingDing.SendBotMsg($"{Environment.GetEnvironmentVariable("Option:Location")}-Batch-CopyFile \n {ex.Message}\n{ex.StackTrace}", GroupNames.醍摩豆服務運維群組);
                return -1;
            }
        }

        /// <summary>
        /// 修复研修平台多人使用个账户，分开账户复制文件时使用
        /// </summary>
        /// <param name="_azureStorage"></param>
        /// <param name="blobName"></param>
        /// <param name="oldFile"></param>
        /// <param name="oldId"></param>
        /// <param name="newId"></param>
        /// <returns></returns>
        public static async Task<int> SingleCopyFile(AzureStorageFactory _azureStorage, string blobName, string oldFile, string oldId, string newId)
        {
            try
            {
                var azureClient = _azureStorage.GetBlobContainerClient($"{blobName}");//获取容器连接地址
                string newurl = oldFile.Substring(oldFile.IndexOf($"{blobName}/") + $"{blobName}/".Length).Replace($"{oldId}", $"{newId}");//替换成新的容器路径
                string oldFileName = oldFile.Substring(oldFile.IndexOf($"{blobName}/") + $"{blobName}/".Length);
                var urlSas = _azureStorage.GetBlobSAS($"{blobName}", $"{HttpUtility.UrlDecode(oldFileName)}", BlobSasPermissions.Read | BlobSasPermissions.List);   //获取容器sas和有效期
                //var respCopy =  azureClient.GetBlobClient(HttpUtility.UrlDecode(newurl)).SyncCopyFromUri(new Uri(urlSas));    //可复制256M以下文件
                var respCopy1 = await azureClient.GetBlobClient(HttpUtility.UrlDecode(newurl)).StartCopyFromUriAsync(new Uri(urlSas.fullUri));    //可复制256M以上文件

                if (!string.IsNullOrEmpty($"{respCopy1.Id}"))
                    return 200;
                else
                    return 400;
            }
            catch(Exception ex)
            {
                return 400;
            }
        }

    }
}