using Azure.Cosmos;
using Azure.Storage.Blobs.Models;
using HTEXLib.COMM.Helpers;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using TEAMModelOS.SDK.DI;
using TEAMModelOS.SDK.Extension;
using TEAMModelOS.SDK.Models;

namespace TEAMModelOS.FunctionV4.HttpTrigger
{
    public class IESHttpTrigger
    {
        private readonly AzureCosmosFactory _azureCosmos;
        private readonly DingDing _dingDing;
        private readonly AzureStorageFactory _azureStorage;
        private readonly AzureRedisFactory _azureRedis;
        public IESHttpTrigger(AzureCosmosFactory azureCosmos, DingDing dingDing, AzureStorageFactory azureStorage
      , AzureRedisFactory azureRedis)
        {
            _azureCosmos = azureCosmos;
            _dingDing = dingDing;
            _azureStorage = azureStorage;
            _azureRedis = azureRedis;
        }
        /// <summary>
        /// 数据推送接口
        /// </summary>
        /// <param name="req"></param>
        /// <param name="log"></param>
        /// <returns></returns>
        [Function("knowledge-change")]
        public async Task<HttpResponseData> KnowledgeChange([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequestData req)
        {
            var response = req.CreateResponse(HttpStatusCode.OK);
            string data = await new StreamReader(req.Body).ReadToEndAsync();
            var json = JsonDocument.Parse(data).RootElement;
            List<OldNew> old_new = null;
            string school = null;
            if (json.TryGetProperty("school", out JsonElement _school))
            {
                school = _school.GetString();
            }
            if (json.TryGetProperty("old_new", out JsonElement _old_new))
            {
                old_new = _old_new.ToObject<List<OldNew>>();
            }
            if (old_new.IsNotEmpty() && !string.IsNullOrWhiteSpace(school))
            {
                foreach (var on in old_new)
                {
                    List<ItemInfo> items = new List<ItemInfo>();
                    string sql = $"select value(c) from c    where array_contains(c.knowledge,'{on._old}') ";
                    await foreach (var item in _azureCosmos.GetCosmosClient().GetContainer(Constant.TEAMModelOS, "School").GetItemQueryIterator<ItemInfo>
                        (queryText: sql.ToString(), requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey($"Item-{_school}") }))
                    {
                        items.Add(item);
                    }

                    items.ForEach(item => {
                        //修改知识点
                        if (!string.IsNullOrEmpty(on._new))
                        {
                            for (int i = 0; i < item.knowledge.Count; i++)
                            {
                                if (item.knowledge[i].Equals(on._old))
                                {
                                    item.knowledge[i] = on._new;
                                }
                            }
                        }
                        else
                        {
                            //表示删除知识点
                            item.knowledge.RemoveAll(x => x.Equals(on._old));
                        }
                    });
                    foreach (var item in items)
                    {
                        ItemBlob itemBlob = null;
                        try
                        {
                            BlobDownloadInfo blobDownloadResult = await _azureStorage.GetBlobContainerClient($"{school}").GetBlobClient($"/item/{item.id}/{item.id}.json").DownloadAsync();
                            if (blobDownloadResult != null)
                            {
                                var blob = JsonDocument.Parse(blobDownloadResult.Content);
                                itemBlob = blob.RootElement.ToObject<ItemBlob>();
                                itemBlob.exercise.knowledge=item.knowledge;
                                await _azureStorage.UploadFileByContainer($"{school}", itemBlob.ToJsonString(), "item", $"{item.id}/{item.id}.json", true) ;
                            }
                        }
                        catch (Exception ex)
                        {
                            itemBlob = null;
                        }
                        await _azureCosmos.GetCosmosClient().GetContainer(Constant.TEAMModelOS, "School").ReplaceItemAsync(item, item.id, new PartitionKey(item.code));
                    }
                }
            }
            await response.WriteAsJsonAsync(new { data = json });
            return response;
        }
    }
}