using HaBookCms.AzureStorage.AzureTable.Interfaces;
using HaBookCms.AzureStorage.ServiceExtension;
using Microsoft.WindowsAzure.Storage.Table;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace HaBookCms.AzureStorage.AzureTable.Implements
{
   public class AzureTableDBRepository : IAzureTableDBRepository
    {
        private readonly CloudTableClient tableClient;
        private  CloudTable table { get; set; }
        public AzureTableDBRepository(AzureStorageOptions options)
        {
            tableClient = TableClientSingleton.getInstance(options.ConnectionString).GetTableClient();
        }
        public AzureTableDBRepository()
        {
        }
        private async Task InitializeTable<T>()
        {
            Type t = typeof(T);
            if (table == null || !table.Name.Equals(t.Name))
            {
                table = tableClient.GetTableReference(t.Name);
                await table.CreateIfNotExistsAsync();
            }
        }

        public async Task<List<T>> FindAll<T>() where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            return await QueryList<T>(exQuery);
        }

        private async Task<List<T>> QueryList<T>(TableQuery<T> exQuery) where T : TableEntity, new()
        {
            TableContinuationToken continuationToken = null;
            List<T> entitys = new List<T>();
            do
            {
                var result = await table.ExecuteQuerySegmentedAsync(exQuery, continuationToken);
                if (result.Results.Count > 0)
                {
                    entitys.AddRange(result.ToList());
                }
                continuationToken = result.ContinuationToken;
            } while (continuationToken != null);
            return entitys;
        }

        private async Task<T> QueryObject<T>(TableQuery<T> exQuery) where T : TableEntity, new()
        {
            TableContinuationToken continuationToken = null;
            T entity = new T();
            do
            {
                var result = await table.ExecuteQuerySegmentedAsync(exQuery, continuationToken);
                if (result.Results.Count > 0)
                {
                    entity = result.ToList().Single();
                }
                continuationToken = result.ContinuationToken;
            } while (continuationToken != null);
            return entity;
        }

        public async Task<int> Count<T>() where T : TableEntity, new()
        {
            await InitializeTable<T>();
            TableContinuationToken continuationToken = null;
            var exQuery = new TableQuery<T>();
            List<T> entitys = new List<T>();
            do
            {
                var result = await table.ExecuteQuerySegmentedAsync(exQuery, continuationToken);
                if (result.Results.Count > 0)
                {
                    entitys.AddRange(result.ToList());
                }
                continuationToken = result.ContinuationToken;
            } while (continuationToken != null);
            return entitys.Count;
        }

        public async Task<T> FindById<T>(string id) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            if (string.IsNullOrEmpty(id))
            {
                exQuery.Where(TableQuery.GenerateFilterCondition("Id", QueryComparisons.Equal, id));
            }
            return await QueryObject<T>(exQuery);

        }

        public async Task<List<T>> FindListByDict<T>(Dictionary<string, object> dict) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            if (null != dict && dict.Count > 0)
            {
                var keys = dict.Keys;
                foreach (string key in keys)
                {
                    if (dict[key] != null && !string.IsNullOrEmpty(dict[key].ToString()))
                    {
                        exQuery.Where(TableQuery.GenerateFilterCondition(key, QueryComparisons.Equal,
                                                                           dict[key].ToString()));
                    }
                }
            }
            return await QueryList<T>(exQuery);
        }

        public async Task<List<T>> FindListByKey<T>(string key, string value) where T : TableEntity, new()
        {
            await InitializeTable<T>();

            var exQuery = new TableQuery<T>();
            if (string.IsNullOrEmpty(key) && string.IsNullOrEmpty(value))
            {
                exQuery.Where(TableQuery.GenerateFilterCondition(key, QueryComparisons.Equal, value));
            }
            return await QueryList<T>(exQuery);
        }

        public async Task<T> FindOneByDict<T>(IDictionary<string, object> dict) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            if (null != dict && dict.Count > 0)
            {
                var keys = dict.Keys;
                foreach (string key in keys)
                {
                    if (dict[key] != null && !string.IsNullOrEmpty(dict[key].ToString()))
                    {
                        exQuery.Where(TableQuery.GenerateFilterCondition(key, QueryComparisons.Equal, dict[key].ToString()));
                    }
                }
            }
            return await QueryObject<T>(exQuery);
        }

        public async Task<T> FindOneByKey<T>(string key, string value) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            if (string.IsNullOrEmpty(key) && string.IsNullOrEmpty(value))
            {
                exQuery.Where(TableQuery.GenerateFilterCondition(key, QueryComparisons.Equal,
                                                                          value));
            }
            return await QueryObject<T>(exQuery);
        }

        public async Task<List<T>> GetEntities<T>(IDictionary<string, object> dict) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            var exQuery = new TableQuery<T>();
            if (null != dict && dict.Count > 0)
            {
                var keys = dict.Keys;
                foreach (string key in keys)
                {
                    if (dict[key] != null && !string.IsNullOrEmpty(dict[key].ToString()))
                    {
                        exQuery.Where(TableQuery.GenerateFilterCondition(key, QueryComparisons.Equal,
                                                                            dict[key].ToString()));
                    }
                }
            }
            return await QueryList<T>(exQuery);
        }



        public async Task<List<T>> SaveAll<T>(List<T> entitys) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            IList<TableResult> result = null;
            Parallel.ForEach(Partitioner.Create(0, entitys.Count, 100),
                  async range =>
                  {
                      TableBatchOperation batchOperation = new TableBatchOperation();
                      for (Int32 i = range.Item1; i < range.Item2; i++)
                          batchOperation.Insert(entitys[i]);
                      result = await table.ExecuteBatchAsync(batchOperation);
                  });
            return (List<T>)result;
        }

        public async Task<List<T>> UpdateAll<T>(List<T> entitys) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            IList<TableResult> result = null;
            Parallel.ForEach(Partitioner.Create(0, entitys.Count, 100),
                  async range =>
                  {
                      TableBatchOperation batchOperation = new TableBatchOperation();
                      for (Int32 i = range.Item1; i < range.Item2; i++)
                          batchOperation.Replace(entitys[i]);
                      result = await table.ExecuteBatchAsync(batchOperation);
                  });
            return (List<T>)result;
        }

        public async Task<List<T>> DeleteAll<T>(List<T> entitys) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            IList<TableResult> result = null;
            Parallel.ForEach(Partitioner.Create(0, entitys.Count, 100),
                  async range =>
                  {
                      TableBatchOperation batchOperation = new TableBatchOperation();
                      for (Int32 i = range.Item1; i < range.Item2; i++)
                          batchOperation.Delete(entitys[i]);
                      result = await table.ExecuteBatchAsync(batchOperation);
                  });
            return (List<T>)result;
        }

        public async Task<T> Save<T>(TableEntity entity) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            TableOperation operation = TableOperation.Insert(entity);
            TableResult result = await table.ExecuteAsync(operation);
            return (T)result.Result;
        }

        public async Task<T> Update<T>(TableEntity entity) where T : TableEntity, new()
        {
            await InitializeTable<T>();
            TableOperation operation = TableOperation.Replace(entity);
            TableResult result = await table.ExecuteAsync(operation);
            return (T)result.Result;
        }

        public async Task<T> Delete<T>(TableEntity entity) where T : TableEntity, new()
        {

            await InitializeTable<T>();
            TableOperation operation = TableOperation.Delete(entity);
            TableResult result = await table.ExecuteAsync(operation);
            return (T)result.Result;
        }


        public async Task<List<T>> FindListByDictAndLike<T>(Dictionary<string, object> dict, Dictionary<string, object> likeDict) where T : TableEntity, new()
        {
            throw new NotImplementedException();
        }

        public async Task<List<T>> FindListByDictAndLikeAndNotEQ<T>(Dictionary<string, object> dict, Dictionary<string, object> likeDict, Dictionary<string, object> notEQDict) where T : TableEntity, new()
        {
            throw new NotImplementedException();
        }

        public async Task<List<T>> FindListByDictAndLikeAndStartWith<T>(Dictionary<string, object> dict, Dictionary<string, object> likeDict, Dictionary<string, object> startDict) where T : TableEntity, new()
        {
            throw new NotImplementedException();
        }
    }
}