using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Linq;
using TEAMModelOS.SDK.Module.AzureCosmosDB.Configuration;
using TEAMModelOS.SDK.Module.AzureCosmosDB.Interfaces;
using Microsoft.Azure.Documents.Client;
using Microsoft.Azure.Documents;
using TEAMModelOS.SDK.Helper.Security.AESCrypt;
using TEAMModelOS.SDK.Context.Exception;
using Microsoft.Azure.Documents.Linq;
using TEAMModelOS.SDK.Helper.Query.LinqHelper;
using System.Reflection;
using Microsoft.Azure.Cosmos;
using Microsoft.Azure.CosmosDB.BulkExecutor;
using Microsoft.Azure.CosmosDB.BulkExecutor.BulkImport;
using System.Threading;
using TEAMModelOS.SDK.Helper.Common.JsonHelper;
using Microsoft.Azure.CosmosDB.BulkExecutor.BulkUpdate;
using TEAMModelOS.SDK.Helper.Common.CollectionHelper;
using Microsoft.Azure.CosmosDB.BulkExecutor.BulkDelete;
using TEAMModelOS.SDK.Context.Attributes.Azure;
using System.Text;
using TEAMModelOS.SDK.Helper.Common.ReflectorExtensions;
using Microsoft.AspNetCore.Hosting;
using System.Collections.Concurrent;
using DataType = Microsoft.Azure.Documents.DataType;
using RequestOptions = Microsoft.Azure.Documents.Client.RequestOptions;
using PartitionKey = Microsoft.Azure.Documents.PartitionKey;

namespace TEAMModelOS.SDK.Module.AzureCosmosDB.Implements
{ /// <summary>
  /// sdk 文档https://github.com/Azure/azure-cosmos-dotnet-v2/tree/master/samples
  /// https://github.com/Azure/azure-cosmos-dotnet-v2/blob/530c8d9cf7c99df7300246da05206c57ce654233/samples/code-samples/DatabaseManagement/Program.cs#L72-L121
  /// </summary>
    public class AzureCosmosDBRepository : IAzureCosmosDBRepository
    {
        /// <summary>
        /// sdk 文档https://github.com/Azure/azure-cosmos-dotnet-v2/tree/master/samples
        /// https://github.com/Azure/azure-cosmos-dotnet-v2/blob/530c8d9cf7c99df7300246da05206c57ce654233/samples/code-samples/DatabaseManagement/Program.cs#L72-L121
        /// </summary>


        private DocumentClient CosmosClient { get; set; }
        /// <summary>
        /// 线程安全的dict类型
        /// </summary>
        private ConcurrentDictionary<string, DocumentCollection> DocumentCollectionDict { get; set; } = new ConcurrentDictionary<string, DocumentCollection>();

        // private DocumentCollection CosmosCollection { get; set; }
        private string Database { get; set; }
        private int CollectionThroughput { get; set; }
        public AzureCosmosDBRepository(AzureCosmosDBOptions options)
        {
            try
            {
                if (!string.IsNullOrEmpty(options.ConnectionString))
                {
                    CosmosClient = CosmosDBClientSingleton.getInstance(options.ConnectionString, options.ConnectionKey).GetCosmosDBClient();
                }
                else
                {
                    throw new BizException("请设置正确的AzureCosmosDB数据库配置信息！");
                }
                Database = options.Database;
                CollectionThroughput = options.CollectionThroughput;
                CosmosClient.CreateDatabaseIfNotExistsAsync(new Microsoft.Azure.Documents.Database { Id = Database });
                // _connectionString = options.ConnectionString;
                // CosmosSerializer

                //获取数据库所有的表
                Microsoft.Azure.Documents.Client.FeedResponse<DocumentCollection> collections = CosmosClient.ReadDocumentCollectionFeedAsync(UriFactory.CreateDatabaseUri(Database)).GetAwaiter().GetResult();
                foreach (IGrouping<string, DocumentCollection> group in collections.GroupBy(c => c.Id))
                {
                    DocumentCollectionDict.TryAdd(group.Key, group.First());
                }
                //collections
                List<Type> types = ReflectorExtensions.GetAllTypeAsAttribute<CosmosDBAttribute>(options.ScanModel);
                foreach (Type type in types)
                {
                    string PartitionKey = GetPartitionKey(type);
                    string CollectionName = "";
                    int RU = 0;
                    IEnumerable<CosmosDBAttribute> attributes = type.GetCustomAttributes<CosmosDBAttribute>(true);
                    if (!string.IsNullOrEmpty(attributes.First<CosmosDBAttribute>().Name))
                    {
                        CollectionName = attributes.First<CosmosDBAttribute>().Name;
                    }
                    else
                    {
                        CollectionName = type.Name;
                    }
                    if (attributes.First<CosmosDBAttribute>().RU > 400)
                    {
                        RU = attributes.First<CosmosDBAttribute>().RU;
                    }
                    else
                    {
                        RU = options.CollectionThroughput;
                    }
                    //如果表存在于数据则检查RU是否变动，如果不存在则执行创建DocumentCollection
                    if (DocumentCollectionDict.TryGetValue(CollectionName, out DocumentCollection collection))
                    {
                        Offer offer = CosmosClient.CreateOfferQuery().Where(o => o.ResourceLink == collection.SelfLink).AsEnumerable().Single();
                        OfferV2 offerV2 = (OfferV2)offer;
                        //更新RU
                        if (offerV2.Content.OfferThroughput < RU)
                        {
                            CosmosClient.ReplaceOfferAsync(new OfferV2(offer, RU));
                        }
                    }
                    else
                    {
                        DocumentCollection collectionDefinition = new DocumentCollection { Id = CollectionName };
                        collectionDefinition.IndexingPolicy = new Microsoft.Azure.Documents.IndexingPolicy(new RangeIndex(DataType.String) { Precision = -1 });

                        // collectionDefinition.PartitionKey = new PartitionKeyDefinition {  Paths = new System.Collections.ObjectModel.Collection<string>() };
                        if (!string.IsNullOrEmpty(PartitionKey))
                        {
                            collectionDefinition.PartitionKey.Paths.Add("/" + PartitionKey);
                        }
                        // CosmosCollection = await this.CosmosClient.CreateDocumentCollectionIfNotExistsAsync(UriFactory.CreateDatabaseUri(Database), collectionDefinition);
                        if (RU > CollectionThroughput)
                        {
                            CollectionThroughput = RU;
                        }
                        DocumentCollection DocumentCollection = CosmosClient.CreateDocumentCollectionIfNotExistsAsync(
                            UriFactory.CreateDatabaseUri(Database), collectionDefinition, new Microsoft.Azure.Documents.Client.RequestOptions { OfferThroughput = CollectionThroughput }).GetAwaiter().GetResult();
                        DocumentCollectionDict.TryAdd(CollectionName, DocumentCollection);
                    }
                }
            }
            catch (DocumentClientException de)
            {
                Exception baseException = de.GetBaseException();
                //Console.WriteLine("{0} error occurred: {1}, Message: {2}", de.StatusCode, de.Message, baseException.Message);
            }
            catch (Exception e)
            {
                Exception baseException = e.GetBaseException();
                //Console.WriteLine("Error: {0}, Message: {1}", e.Message, baseException.Message);
            }
            finally
            {
                //  Console.WriteLine("End of demo, press any key to exit.");
                //  Console.ReadKey();
            }
        }

        private async Task<DocumentCollection> InitializeCollection<T>()
        {
            Type type = typeof(T);
            string partitionKey = GetPartitionKey<T>();
            string CollectionName;
            IEnumerable<CosmosDBAttribute> attributes = type.GetCustomAttributes<CosmosDBAttribute>(true);
            if (!string.IsNullOrEmpty(attributes.First<CosmosDBAttribute>().Name))
            {
                CollectionName = attributes.First<CosmosDBAttribute>().Name;
            }
            else
            {
                CollectionName = type.Name;
            }
            return await InitializeCollection(CollectionName, partitionKey);
        }

        private async Task<DocumentCollection> InitializeCollection(string CollectionName, string PartitionKey)
        {
            /////内存中已经存在这个表则直接返回
            if (DocumentCollectionDict.TryGetValue(CollectionName, out DocumentCollection DocumentCollection))
            {
                return DocumentCollection;
            }///如果没有则尝试默认创建
            else
            {
                DocumentCollection documentCollection = new DocumentCollection { Id = CollectionName };
                documentCollection.IndexingPolicy = new Microsoft.Azure.Documents.IndexingPolicy(new RangeIndex(DataType.String) { Precision = -1 });

                // collectionDefinition.PartitionKey = new PartitionKeyDefinition {  Paths = new System.Collections.ObjectModel.Collection<string>() };
                if (!string.IsNullOrEmpty(PartitionKey))
                {
                    documentCollection.PartitionKey.Paths.Add("/" + PartitionKey);
                }
                // CosmosCollection = await this.CosmosClient.CreateDocumentCollectionIfNotExistsAsync(UriFactory.CreateDatabaseUri(Database), collectionDefinition);
                documentCollection =   await this.CosmosClient.CreateDocumentCollectionIfNotExistsAsync(
                       UriFactory.CreateDatabaseUri(Database), documentCollection, new RequestOptions { OfferThroughput = CollectionThroughput });
                DocumentCollectionDict.TryAdd(CollectionName, documentCollection);
                return documentCollection;
            }
        }

        private string GetPartitionKey<T>()
        {
            Type type = typeof(T);
            return GetPartitionKey(type);
        }
        private string GetPartitionKey(Type type)
        {
            PropertyInfo[] properties = type.GetProperties();
            List<PropertyInfo> attrProperties = new List<PropertyInfo>();
            foreach (PropertyInfo property in properties)
            {
                if (property.Name.Equals("PartitionKey"))
                {
                    attrProperties.Add(property);
                    break;
                }
                object[] attributes = property.GetCustomAttributes(true);
                foreach (object attribute in attributes) //2.通过映射，找到成员属性上关联的特性类实例，
                {
                    if (attribute is PartitionKeyAttribute)
                    {
                        attrProperties.Add(property);
                    }
                }
            }
            if (attrProperties.Count <= 0)
            {
                throw new BizException(type.Name +"has no PartitionKey !!!!!!");
            }
            else
            {
                if (attrProperties.Count == 1)
                {
                    return attrProperties[0].Name;
                }
                else { throw new BizException("PartitionKey can only be single!"); }
            }
        }
        public async Task<T> Save<T>(T entity)  //where T : object, new()
        {
            try
            {
                Type t = typeof(T);
              DocumentCollection collection=  await InitializeCollection<T>();
                ResourceResponse<Document> doc =
                    await CosmosClient.CreateDocumentAsync(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), entity);
                //Console.WriteLine(doc.ActivityId);
                return entity;
            }
            catch (Exception e)
            {
                throw new BizException(e.Message);
            }
        }

        public async Task<T> Update<T>(T entity)
        {
            Type t = typeof(T);
            DocumentCollection collection = await InitializeCollection<T>();
            ResourceResponse<Document> doc =
                await CosmosClient.UpsertDocumentAsync(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), entity);
            return entity;
        }
        public async Task<string> ReplaceObject<T>(T entity, string key)
        {
            Type t = typeof(T);
            DocumentCollection collection = await InitializeCollection<T>();
            try
            {
                ResourceResponse<Document> doc =
                await CosmosClient.ReplaceDocumentAsync(UriFactory.CreateDocumentUri(Database,collection.Id, key), entity);
                return key;
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
                //return false;
            }
            return null;

        }

        public async Task<string> ReplaceObject<T>(T entity, string key, string partitionKey)
        {
            Type t = typeof(T);
            DocumentCollection collection = await InitializeCollection<T>();
            try
            {
                ResourceResponse<Document> doc =
                await CosmosClient.ReplaceDocumentAsync(UriFactory.CreateDocumentUri(Database,collection.Id, key),
                entity,
                new RequestOptions { PartitionKey = new PartitionKey(partitionKey) });
                return key;
            }
            catch (Exception e)
            {
                throw new BizException(e.Message);
                //Console.WriteLine("{0} Exception caught.", e);
                //return false;
            }
        }

        public async Task<List<T>> FindAll<T>()
        {
            Type t = typeof(T);
            Boolean open = true;
            List<T> objs = new List<T>();

            DocumentCollection collection =  await InitializeCollection<T>();
            //查询条数 -1是全部
            FeedOptions queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = open };
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database,collection.Id), queryOptions).AsDocumentQuery();
            while (query.HasMoreResults)
            {
                foreach (T obj in await query.ExecuteNextAsync())
                {
                    objs.Add(obj);
                }
            }
            return objs;
            //return CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, t.Name),sql);

        }

        public async Task<List<T>> FindLinq<T>(Func<IQueryable<object>, object> singleOrDefault)
        {
            Type t = typeof(T);

            List<T> objs = new List<T>();
            DocumentCollection collection = await InitializeCollection<T>();
            //查询条数 -1是全部
            FeedOptions queryOptions = new FeedOptions { MaxItemCount = -1 };
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), queryOptions);

            //  query.Where();
            return objs;
            //return CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, t.Name),sql);

        }

        public async Task<List<T>> FindSQL<T>(string sql)
        {
            Type t = typeof(T);
            //List<T> objs = new List<T>();
            DocumentCollection collection =  await InitializeCollection<T>();
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database,collection.Id), sql);
            //foreach (var item in query)
            //{
            //    objs.Add(item);
            //}
            return query.ToList<T>();

        }

        public async Task<List<T>> FindSQL<T>(string sql, bool IsPk)
        {
            Type t = typeof(T);
            //List<T> objs = new List<T>();
            // Boolean open = IsPk;
            DocumentCollection collection = await InitializeCollection<T>();
            //查询条数 -1是全部
            FeedOptions queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = IsPk };
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), sql, queryOptions);
            //foreach (var item in query)
            //{
            //    objs.Add(item);
            //}
            return query.ToList<T>();

        }



        public async Task<List<T>> FindByParams<T>(Dictionary<string, object> dict)
        {
            DocumentCollection collection =  await InitializeCollection<T>();
            Type t = typeof(T);
            Boolean open = true;
            List<Filter> filters = new List<Filter>();

            string PKname = "";
            PropertyInfo[] properties = t.GetProperties();
            foreach (PropertyInfo property in properties)
            {
                object[] attributes = property.GetCustomAttributes(true);
                foreach (object attribute in attributes) //2.通过映射，找到成员属性上关联的特性类实例，
                {
                    if (attribute is PartitionKeyAttribute)
                    {
                        PKname = property.Name;
                        break;
                    }
                }
            }
            foreach (string key in dict.Keys)
            {
                //if (t.Name.Equals(key)) {
                //    open = false;
                //}

                if (PKname.Equals(key))
                {
                    open = false;
                }
                filters.Add(new Filter { Contrast = "and", Key = key, Value = dict[key] != null ? dict[key].ToString() : throw new Exception("参数值不能为null") });
            }


            //List<T> objs = new List<T>();
            await InitializeCollection<T>();
            //查询条数 -1是全部
            FeedOptions queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = open };
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), queryOptions);
            List<T> list = DynamicLinq.GenerateFilter<T>(query, filters).ToList();
            return list;
            //return CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, t.Name),sql);

        }
        public async Task<string> DeleteAsync<T>(string id)
        {
            Type t = typeof(T);
            DocumentCollection collection = await InitializeCollection<T>();
            ResourceResponse<Document> doc =
                await CosmosClient.DeleteDocumentAsync(UriFactory.CreateDocumentUri(Database,collection.Id, id));
            //Console.WriteLine(doc.ActivityId);
            return id;
        }
        public async Task<T> DeleteAsync<T>(T entity)
        {
            DocumentCollection collection =  await InitializeCollection<T>();
            Type t = typeof(T);
            string PartitionKey = GetPartitionKey<T>();
            if (!string.IsNullOrEmpty(PartitionKey))
            {
                string pkValue = entity.GetType().GetProperty(PartitionKey).GetValue(entity).ToString();
                string idValue = entity.GetType().GetProperty("id").GetValue(entity).ToString();
                ResourceResponse<Document> doc =
              await CosmosClient.DeleteDocumentAsync(UriFactory.CreateDocumentUri(Database, collection.Id, idValue), new RequestOptions { PartitionKey = new PartitionKey(pkValue) });
            }
            else
            {
                string idValue = entity.GetType().GetProperty("id").GetValue(entity).ToString();
                ResourceResponse<Document> doc =
                await CosmosClient.DeleteDocumentAsync(UriFactory.CreateDocumentUri(Database, collection.Id, idValue));
            }


            //Console.WriteLine(doc.ActivityId);
            return entity;

        }
        public async Task<string> DeleteAsync<T>(string id, string partitionKey)
        {
            Type t = typeof(T);

            DocumentCollection collection = await InitializeCollection<T>();
            ResourceResponse<Document> doc =
                await CosmosClient.DeleteDocumentAsync(UriFactory.CreateDocumentUri(Database, collection.Id, id), new RequestOptions { PartitionKey = new PartitionKey(partitionKey) });
            //Console.WriteLine(doc.ActivityId);
            return id;

        }

        public async Task<List<T>> SaveAll<T>(List<T> enyites)
        {
            DocumentCollection dataCollection = await InitializeCollection<T>();
            // Set retry options high for initialization (default values).
            CosmosClient.ConnectionPolicy.RetryOptions.MaxRetryWaitTimeInSeconds = 30;
            CosmosClient.ConnectionPolicy.RetryOptions.MaxRetryAttemptsOnThrottledRequests = 9;
            IBulkExecutor bulkExecutor = new BulkExecutor(CosmosClient, dataCollection);
            await bulkExecutor.InitializeAsync();
            // Set retries to 0 to pass control to bulk executor.
            CosmosClient.ConnectionPolicy.RetryOptions.MaxRetryWaitTimeInSeconds = 0;
            CosmosClient.ConnectionPolicy.RetryOptions.MaxRetryAttemptsOnThrottledRequests = 0;
            BulkImportResponse bulkImportResponse = null;
            long totalNumberOfDocumentsInserted = 0;
            double totalRequestUnitsConsumed = 0;
            double totalTimeTakenSec = 0;
            var tokenSource = new CancellationTokenSource();
            var token = tokenSource.Token;
            int pageSize = 100;
            int pages = (int)Math.Ceiling((double)enyites.Count / pageSize);

            for (int i = 0; i < pages; i++)
            {
                List<string> documentsToImportInBatch = new List<string>();
                List<T> lists = enyites.Skip((i) * pageSize).Take(pageSize).ToList();
                for (int j = 0; j < lists.Count; j++)
                {
                    documentsToImportInBatch.Add(lists[j].ToJson());
                }
                var tasks = new List<Task>
                { Task.Run(async () =>
                    {
                        do
                        {
                            //try
                            //{
                            bulkImportResponse = await bulkExecutor.BulkImportAsync(
                                documents: documentsToImportInBatch,
                                enableUpsert: true,
                                disableAutomaticIdGeneration: true,
                                maxConcurrencyPerPartitionKeyRange: null,
                                maxInMemorySortingBatchSize: null,
                                cancellationToken: token);
                            //}
                            //catch (DocumentClientException de)
                            //{
                            //    break;
                            //}
                            //catch (Exception e)
                            //{
                            //    break;
                            //}
                        } while (bulkImportResponse.NumberOfDocumentsImported < documentsToImportInBatch.Count);
                        totalNumberOfDocumentsInserted += bulkImportResponse.NumberOfDocumentsImported;
                        totalRequestUnitsConsumed += bulkImportResponse.TotalRequestUnitsConsumed;
                        totalTimeTakenSec += bulkImportResponse.TotalTimeTaken.TotalSeconds;
                    },
                token)
                };
                await Task.WhenAll(tasks);
            }
            return enyites;
        }
        public async Task<List<T>> UpdateAll<T>(Dictionary<string, object> dict, Dictionary<string, object> updateFilters, List<string> deleteKeys = null)
        {

            DocumentCollection dataCollection = await InitializeCollection<T>();
            IBulkExecutor bulkExecutor = new BulkExecutor(CosmosClient, dataCollection);
            await bulkExecutor.InitializeAsync();
            BulkUpdateResponse bulkUpdateResponse = null;
            long totalNumberOfDocumentsUpdated = 0;

            double totalRequestUnitsConsumed = 0;
            double totalTimeTakenSec = 0;

            var tokenSource = new CancellationTokenSource();
            var token = tokenSource.Token;
            // Generate update operations.
            List<UpdateOperation> updateOperations = new List<UpdateOperation>();
            // Unset the description field.
            if (null != updateFilters && updateFilters.Count > 0)
            {
                var keys = updateFilters.Keys;
                foreach (string key in keys)
                {
                    // updateOperations.Add(new SetUpdateOperation<string>())
                    if (updateFilters[key] != null && !string.IsNullOrEmpty(updateFilters[key].ToString()))
                    {
                        updateOperations.Add(SwitchType(key, updateFilters[key]));
                    }
                }
            }
            if (deleteKeys.IsNotEmpty())
            {
                foreach (string key in deleteKeys)
                {
                    updateOperations.Add(new UnsetUpdateOperation(key));
                }
            }
            List<T> list = await FindByParams<T>(dict);
            int pageSize = 100;
            int pages = (int)Math.Ceiling((double)list.Count / pageSize);
            string partitionKey = "/" + GetPartitionKey<T>();
            Type type = typeof(T);
            for (int i = 0; i < pages; i++)
            {
                List<UpdateItem> updateItemsInBatch = new List<UpdateItem>();
                List<T> lists = list.Skip((i) * pageSize).Take(pageSize).ToList();
                for (int j = 0; j < lists.Count; j++)
                {
                    string partitionKeyValue = lists[j].GetType().GetProperty(partitionKey).GetValue(lists[j]) + "";
                    string id = lists[j].GetType().GetProperty("id").GetValue(lists[j]) + "";
                    updateItemsInBatch.Add(new UpdateItem(id, partitionKeyValue, updateOperations));
                }
                var tasks = new List<Task>
                { Task.Run(async () =>
                    {
                        do
                        {
                            //try
                            //{
                            bulkUpdateResponse = await bulkExecutor.BulkUpdateAsync(
                                updateItems: updateItemsInBatch,
                                maxConcurrencyPerPartitionKeyRange: null,
                                cancellationToken: token);
                            //}
                            //catch (DocumentClientException de)
                            //{
                            //    break;
                            //}
                            //catch (Exception e)
                            //{
                            //    break;
                            //}
                        } while (bulkUpdateResponse.NumberOfDocumentsUpdated < updateItemsInBatch.Count);
                        totalNumberOfDocumentsUpdated += bulkUpdateResponse.NumberOfDocumentsUpdated;
                        totalRequestUnitsConsumed += bulkUpdateResponse.TotalRequestUnitsConsumed;
                        totalTimeTakenSec += bulkUpdateResponse.TotalTimeTaken.TotalSeconds;
                    },
                token)
                };
                await Task.WhenAll(tasks);
            }
            return list;
        }
        public async Task<List<T>> DeleteAll<T>(Dictionary<string, object> dict)
        {
            DocumentCollection dataCollection = await InitializeCollection<T>();
            List<T> list = await FindByParams<T>(dict);
            List<Tuple<string, string>> pkIdTuplesToDelete = new List<Tuple<string, string>>();
            if (list.IsNotEmpty())
            {
                foreach (T t in list)
                {
                    string id = t.GetType().GetProperty("id").GetValue(t) + "";
                    pkIdTuplesToDelete.Add(new Tuple<string, string>(id, id));
                }
            }
            else
            {
                return null;
            }
            long totalNumberOfDocumentsDeleted = 0;
            double totalRequestUnitsConsumed = 0;
            double totalTimeTakenSec = 0;
            BulkDeleteResponse bulkDeleteResponse = null;

            BulkExecutor bulkExecutor = new BulkExecutor(CosmosClient, dataCollection);
            await bulkExecutor.InitializeAsync();
            bulkDeleteResponse = await bulkExecutor.BulkDeleteAsync(pkIdTuplesToDelete);
            totalNumberOfDocumentsDeleted = bulkDeleteResponse.NumberOfDocumentsDeleted;
            totalRequestUnitsConsumed = bulkDeleteResponse.TotalRequestUnitsConsumed;
            totalTimeTakenSec = bulkDeleteResponse.TotalTimeTaken.TotalSeconds;
            return list;
        }
        private static UpdateOperation SwitchType(string key, object obj)
        {
            Type s = obj.GetType();
            TypeCode typeCode = Type.GetTypeCode(s);
            return typeCode switch
            {
                TypeCode.String => new SetUpdateOperation<string>(key, obj.ToString()),
                TypeCode.Int32 => new SetUpdateOperation<Int32>(key, (Int32)obj),
                TypeCode.Double => new SetUpdateOperation<Double>(key, (Double)obj),
                TypeCode.Byte => new SetUpdateOperation<Byte>(key, (Byte)obj),
                TypeCode.Boolean => new SetUpdateOperation<Boolean>(key, (Boolean)obj),
                TypeCode.DateTime => new SetUpdateOperation<DateTime>(key, (DateTime)obj),
                TypeCode.Int64 => new SetUpdateOperation<Int64>(key, (Int64)obj),
                _ => null,
            };
        }

        public async Task<List<T>> FindByDict<T>(Dictionary<string, object> dict, bool IsPk=true)
        {
            Type t = typeof(T);
            // List<T> objs = new List<T>();
         DocumentCollection collection=   await InitializeCollection<T>();
            StringBuilder sql = new StringBuilder("select * from c where 1=1 ");
            if (dict != null)
            {
                foreach (string key in dict.Keys)
                {
                    sql.Append(GenSql(dict[key], key));
                }
            }
            //查询条数 -1是全部
            FeedOptions queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = IsPk };
            var query = CosmosClient.CreateDocumentQuery<T>(UriFactory.CreateDocumentCollectionUri(Database, collection.Id), sql.ToString(), queryOptions);
            //foreach (var item in query)
            //{
            //    objs.Add(item);
            //}
            return query.ToList<T>();
        }

        private static string GenSql(object obj, string key)
        {
            Type s = obj.GetType();
            TypeCode typeCode = Type.GetTypeCode(s);
            return typeCode switch
            {
                TypeCode.String => " and c." + key + "=" + "'" + obj.ToString() + "'",
                TypeCode.Int32 => " and c." + key + "=" + int.Parse(obj.ToString()),
                TypeCode.Double => " and c." + key + "=" + double.Parse(obj.ToString()),
                //case TypeCode.Byte: return "and c." + key + "=" + (Byte)obj ;   
                TypeCode.Boolean => " and c." + key + "=" + bool.Parse(obj.ToString()),
                TypeCode.DateTime => " and c." + key + "=" + (DateTime)obj,
                TypeCode.Int64 => " and c." + key + "=" + long.Parse(obj.ToString()),
                _ => null,
            };
        }

        public  IQueryable<dynamic> FindByDict(string CollectionName,  Dictionary<string, object> dict)
        {
            if (DocumentCollectionDict.TryGetValue(CollectionName, out DocumentCollection collection))
            {
              //  collection = await InitializeCollection(CollectionName, "");
                StringBuilder sql = new StringBuilder("select * from " + CollectionName + " c where 1=1 ");
                if (dict != null)
                {
                    foreach (string key in dict.Keys)
                    {
                        sql.Append(GenSql(dict[key], key));
                    }
                }
                FeedOptions queryOptions;
                if (collection.PartitionKey.Paths.Count > 0)
                {
                    queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = true };
                }
                else
                {
                    queryOptions = new FeedOptions { MaxItemCount = -1, EnableCrossPartitionQuery = false };
                }
                //查询条数 -1是全部
                var query = CosmosClient.CreateDocumentQuery(UriFactory.CreateDocumentCollectionUri(Database, CollectionName), sql.ToString(), queryOptions);
                return query;
            }
            else {
                throw new BizException("CollectionName named:" + CollectionName + " dose not exsit in Database!");
            }
            
        }
    }
}