using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using System.Linq;
using Microsoft.Extensions.Hosting;
using MySystem;
using MySystem.Models;
using Library;
using LitJson;

public class PublicService : BackgroundService
{
    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        while (!stoppingToken.IsCancellationRequested)
        {
            ProgressStart();
            int timespan = 1;
            await Task.Delay(timespan);
        }
    }

    private void ProgressStart()
    {
        List<Brand> BrandList = RedisDbconn.Instance.GetList<Brand>("brands", 1, 100);
        foreach(Brand brand in BrandList)
        {
            Dictionary<string, string> data = new Dictionary<string, string>();
            try
            {
                data = RedisDbconn.Instance.RPop<Dictionary<string, string>>(brand.QueueName);
                if (data != null)
                {
                    DoQueue(data["Content"], brand);
                }
            }
            catch (Exception ex)
            {
                if (!data.ContainsKey("ErrNum"))
                {
                    data.Add("ErrTime", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
                    data.Add("ErrMsg", ex.ToString());
                    data.Add("ErrNum", "1");
                    RedisDbconn.Instance.AddList(brand.QueueName + "_err", data);
                }
                else
                {
                    int ErrNum = int.Parse(data["ErrNum"]) + 1;
                    data["ErrTime"] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                    data["ErrMsg"] = ex.ToString();
                    data["ErrNum"] = ErrNum.ToString();
                    if (ErrNum > 2)
                    {
                        RedisDbconn.Instance.AddList(brand.QueueName + "_dead", data);
                    }
                    else
                    {
                        RedisDbconn.Instance.AddList(brand.QueueName + "_err", data);
                    }
                }
            }
        }
    }

    // private void ProgressStart()
    // {
    //     List<Brand> BrandList = RedisDbconn.Instance.GetList<Brand>("brands", 1, 100);
    //     Parallel.ForEach(BrandList, brand =>
    //     {
    //         Dictionary<string, string> data = new Dictionary<string, string>();
    //         try
    //         {
    //             data = RedisDbconn.Instance.RPop<Dictionary<string, string>>(brand.QueueName);
    //             if (data != null)
    //             {
    //                 DoQueue(data["Content"], brand);
    //             }
    //         }
    //         catch (Exception ex)
    //         {
    //             if (!data.ContainsKey("ErrNum"))
    //             {
    //                 data.Add("ErrTime", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
    //                 data.Add("ErrMsg", ex.ToString());
    //                 data.Add("ErrNum", "1");
    //                 RedisDbconn.Instance.AddList(brand.QueueName + "_err", data);
    //             }
    //             else
    //             {
    //                 int ErrNum = int.Parse(data["ErrNum"]) + 1;
    //                 data["ErrTime"] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
    //                 data["ErrMsg"] = ex.ToString();
    //                 data["ErrNum"] = ErrNum.ToString();
    //                 if (ErrNum > 2)
    //                 {
    //                     RedisDbconn.Instance.AddList(brand.QueueName + "_dead", data);
    //                 }
    //                 else
    //                 {
    //                     RedisDbconn.Instance.AddList(brand.QueueName + "_err", data);
    //                 }
    //             }
    //         }
    //     });
    // }

    //要执行的方法
    public void DoQueue(string data, Brand brand)
    {
        //数据开始入库
        JsonData jsonObj = JsonMapper.ToObject(data);
        string fields = "";
        string fieldvals = "";
        foreach (FieldRelationTable field in brand.FieldRelation)
        {
            string fType = field.TargetFieldType;
            string val = jsonObj[field.SourceFieldName].ToString();
            fields += field.TargetFieldName + ",";
            if (fType == "int")
            {
                fieldvals += int.Parse(function.CheckInt(val)) + ",";
            }
            else if (fType == "decimal")
            {
                fieldvals += decimal.Parse(function.CheckNum(val)) + ",";
            }
            else if (fType == "datetime")
            {
                fieldvals += "'" + DateTime.Parse(val) + "',";
            }
            else
            { 
                fieldvals += "'" + val + "',";
            }
        }
        fields = fields.TrimEnd(',');
        fieldvals = fieldvals.TrimEnd(',');
        string sql = "insert into " + brand.TargetTableName + " (" + fields + ") values (" + fieldvals + ")";
        dbconn.op(sql);
        
    }
}