using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using POSV.Utils;
using System.Threading.Tasks;
using POSV.Entity;

namespace POSV.Component
{
    [ToolboxItem(true)]
    public partial class PayParameter : AbstractParameter
    {
        /// <summary>
        /// 修改前的数据
        /// </summary>
        private Dictionary<string , string> _oldValue = new Dictionary<string , string>();

        /// <summary>
        /// 修改后的数据
        /// </summary>
        private Dictionary<string , string> _newValue = new Dictionary<string , string>();

        /// <summary>
        /// 是否初始化
        /// </summary>
        private bool _inited = false;

        public PayParameter()
        {
            InitializeComponent();
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            if (this.DesignMode) return;

            this.BackColor = Color.Transparent;

            this.InitUi();
        }

        /// <summary>
        /// 初始化界面
        /// </summary>
        private void InitUi()
        {
            //界面加载开始
            this._inited = false;

            Task.Factory.StartNew(() => {
                Dictionary<string , string> data = null;

                //获取品类分组下的全部参数
                using (var db = Global.Instance.OpenDataBase)
                {
                    data = db.Dictionary<string , string>(string.Format(SqlConstant.ConfigQueryByGroupToDictionary , ConfigConstant.PAYMENT_GROUP));
                }

                //将新增加或者变更的参数重新更新到数据库
                var defaultValue = ConfigConstant.PaymentGroupDefaultValue();

                //数据库有配置参数
                if (data != null)
                {
                    var diff = defaultValue.Where(kvp => !data.ContainsKey(kvp.Key)).ToDictionary(kvp => kvp.Key , kvp => kvp.Value);

                    if (diff != null && diff.Keys.Count > 0)
                    {
                        var list = new List<Config>();
                        foreach (var v in diff)
                        {
                            var config = new Config();
                            config.Id = IdWorkerUtils.Instance.NextId();
                            config.Group = ConfigConstant.PAYMENT_GROUP;
                            config.TenantId = Global.Instance.Authc.TenantId;
                            config.Keys = v.Key;
                            config.Values = v.Value;

                            list.Add(config);
                        }
                        //如果数据表中没有配置group相关的信息，更新差异
                        this.SaveChanged(list);

                        //将差异合并到data，避免再次访问数据库
                        data = data.Concat(diff).ToDictionary(x => x.Key , x => x.Value);
                    }
                }
                else
                {
                    //加载系统默认参数
                    data = defaultValue;

                    var list = new List<Config>();
                    foreach (var v in defaultValue)
                    {
                        var config = new Config();
                        config.Id = IdWorkerUtils.Instance.NextId();
                        config.Group = ConfigConstant.PAYMENT_GROUP;
                        config.TenantId = Global.Instance.Authc.TenantId;
                        config.Keys = v.Key;
                        config.Values = v.Value;

                        list.Add(config);
                    }

                    //如果数据表中没有配置group相关的信息，保存
                    this.SaveChanged(list);
                }

                return data;
            }).ContinueWith(task =>
            {
                if (task.IsFaulted)
                {
                    LOGGER.Error(task.Exception.GetBaseException() , "加载移动支付参数设置异常");
                }
                else
                {
                    this.Invoke(new Action(() =>
                    {
                        BindUi(task.Result);
                    }));
                }
            });
        }

        private void BindUi(Dictionary<string , string> data)
        {
            //变更前的数据单独存储
            _oldValue.Clear();
            _oldValue = ObjectUtils.Copy<Dictionary<string , string>>(data);
            //清理历史变更数据
            _newValue.Clear();

            //移动支付渠道选择
            //金额尾数处理方式
            if (data.ContainsKey(ConfigConstant.PAYMENT_CHANNEL))
            {
                string _value = data[ConfigConstant.PAYMENT_CHANNEL].ToString();
                switch (_value)
                {
                    case "-1"://暂不启用移动支付
                        this.checkBoxX115.Checked = true;
                        break;
                    case "0"://原生支付(含服务商渠道)
                        this.checkBoxX117.Checked = true;
                        break;
                    case "2"://POS通交易渠道(银联商务)
                        this.checkBoxX1.Checked = true;
                        break;
                    default:
                        this.checkBoxX115.Checked = true;
                        break;
                }
            }
            else
            {
                this.checkBoxX117.Checked = true;
            }

            //界面加载完成
            this._inited = true;
        }

        public List<Config> NewChanged()
        {
            var result = new List<Config>();
            //尚未初始化完成
            if (!this._inited) return result;

            var channel = "-1";
            //暂不启用移动支付
            if (checkBoxX115.Checked)
            {
                channel = checkBoxX115.Tag.ToString();
            }

            //原生支付(含服务商渠道)
            if (checkBoxX117.Checked)
            {
                channel = checkBoxX117.Tag.ToString();
            }

            //POS通交易渠道(银联商务)
            if (checkBoxX1.Checked)
            {
                channel = checkBoxX1.Tag.ToString();
            }
            
            //判断金额尾数处理方式是否更改
            bool isChanged = !(this._oldValue.ContainsKey(ConfigConstant.PAYMENT_CHANNEL) && this._oldValue[ConfigConstant.PAYMENT_CHANNEL].Equals(channel));
            if (isChanged)
            {
                this._newValue[ConfigConstant.PAYMENT_CHANNEL] = channel;
            }
            

            //转换为Config对象，便于存储
            foreach (var v in this._newValue)
            {
                var config = new Config();

                config.Id = IdWorkerUtils.Instance.NextId();
                config.Group = ConfigConstant.PAYMENT_GROUP;
                config.TenantId = Global.Instance.Authc.TenantId;
                config.Keys = v.Key;
                config.Values = v.Value;

                result.Add(config);
            }

            return result;
        }

        public Tuple<bool , string> SaveChanged(List<Config> data)
        {
            bool isSuccess = true;
            string message = "参数更新成功";
            try
            {
                using (var db = Global.Instance.OpenDataBase)
                {
                    using (var trans = db.GetTransaction())
                    {
                        foreach (var config in data)
                        {
                            db.Save(config);
                        }
                        trans.Complete();
                    }
                }
            }
            catch (Exception ex)
            {
                isSuccess = false;
                message = "参数更新异常";

                LOGGER.Error(ex , message);
            }
            finally
            {
                if (isSuccess)
                {
                    //新修改后的参数应用后，重置OldValue，避免用户在没有切换Tab情况下，直接修改当前Tab内容
                    foreach (var config in data)
                    {
                        string key = config.Keys;
                        string value = config.Values;

                        this._oldValue[key] = value;

                    }

                    this._newValue.Clear();

                    UpdateUi();
                }
            }
            return new Tuple<bool , string>(isSuccess , message);
        }

        private void UpdateUi()
        {
            Global.Instance.ReloadConfig(ConfigConstant.PAYMENT_GROUP);
        }
    }
}