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 System.Threading.Tasks;
using POSV.Entity;
using POSV.Utils;
using POSV.Bean;

namespace POSV.Component
{
    [ToolboxItem(true)]
    public partial class GuestShowParameter : 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 GuestShowParameter()
        {
            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.DEVICE_GROUP));
                }

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

                //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.DEVICE_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.DEVICE_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(), "加载客显参数设置异常");
                }
                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();

            //串口参数初始值
            this.guestShowPortCom.Items.Clear();
            this.guestShowPortCom.Items.AddRange(Constant.COM_PORT_NAME_VALUE);

            //是否启用客显
            this.enableGuestShowCom.Value = data[ConfigConstant.DEVICE_GUESTSHOW_ENABLE] == "1";

            //加载支持的客显
            List<GuestShowItem> itemList = new List<GuestShowItem>();
            var defaultGuestShowItem = Global.Instance.GetDefaultGuestShowItem();
            itemList.Add(defaultGuestShowItem);

            List<GuestShowDevice> showDeviceList = null;
            using (var db = Global.Instance.OpenDataBase)
            {
                showDeviceList = db.Fetch<GuestShowDevice>();
            }
            if (showDeviceList.Count > 0)
            {
                foreach (var device in showDeviceList)
                {
                    GuestShowItem item = new GuestShowItem();
                    item.Name = device.Name;
                    item.Parameter = JsonUtils.Deserialize<POSV.Bean.GuestShowParameter>(device.Param);
                    itemList.Add(item);
                }
            }

            this.guestShowNameCom.Items.Clear();
            this.guestShowNameCom.Items.AddRange(itemList.ToArray());
            this.guestShowNameCom.DisplayMember = "name";

            if (data.ContainsKey(ConfigConstant.DEVICE_GUESTSHOW_PARAMETER))
            {
                var json = data[ConfigConstant.DEVICE_GUESTSHOW_PARAMETER];
                var item = JsonUtils.Deserialize<GuestShowItem>(json);
                if (item != null)
                {
                    this.guestShowNameCom.Tag = item.Parameter;
                    var index = itemList.FindIndex(x => x.Name == item.Name);
                    this.guestShowNameCom.SelectedIndex = index < 0 ? 0 : index;
                    this.guestShowPortCom.Text = item.Port;
                }
                else
                {
                    this.guestShowNameCom.SelectedIndex = 0;
                    this.guestShowPortCom.SelectedIndex = 0;
                }
            }
            else
            {
                this.guestShowNameCom.SelectedIndex = 0;
                this.guestShowPortCom.SelectedIndex = 0;
            }

            //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;

            //是否启用客显
            var enableGuestShow = this.enableGuestShowCom.Value ? "1" : "0";
            bool changed = !(this._oldValue.ContainsKey(ConfigConstant.DEVICE_GUESTSHOW_ENABLE) && this._oldValue[ConfigConstant.DEVICE_GUESTSHOW_ENABLE].Equals(enableGuestShow));
            if (changed)
            {
                this._newValue[ConfigConstant.DEVICE_GUESTSHOW_ENABLE] = enableGuestShow;
            }
            //客显参数
            var item = new GuestShowItem();
            item.Name = this.guestShowNameCom.Text;
            item.Port = this.guestShowPortCom.Text;
            var showItem = this.guestShowNameCom.SelectedItem as POSV.Bean.GuestShowItem;
            if (showItem != null)
            {
                item.Parameter = showItem.Parameter;
            }
            var itemJson = JsonUtils.Serialize(item);
            changed = !(this._oldValue.ContainsKey(ConfigConstant.DEVICE_GUESTSHOW_PARAMETER) && this._oldValue[ConfigConstant.DEVICE_GUESTSHOW_PARAMETER].Equals(itemJson));
            if (changed)
            {
                this._newValue[ConfigConstant.DEVICE_GUESTSHOW_PARAMETER] = itemJson;
            }

            //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.DEVICE_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
                    this._newValue.Clear();

                    //更新控件UI
                    Global.Instance.ReloadConfig(ConfigConstant.DEVICE_GROUP);
                    //更新客显配置
                    GuestShowUtils.RefreshInstance();
                }
            }
            return new Tuple<bool, string>(isSuccess, message);
        }

        /// <summary>
        /// 修改配置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnModifyParamClick(object sender, EventArgs e)
        {
            if (this.guestShowNameCom.Text == "None")
            {
                MessageBox.Show("请选择客显");
                return;
            }
            var item = this.guestShowNameCom.SelectedItem as GuestShowItem;
            string param = string.Empty;
            if (item != null)
            {
                param = JsonUtils.Serialize(item.Parameter);
            }
            GuestShowModifyForm form = new GuestShowModifyForm(param);
            form.KxCmdCommit -= OnGuestShowParamModifySubmit;
            form.KxCmdCommit += OnGuestShowParamModifySubmit;
            form.ShowDialog();
        }

        private void OnGuestShowParamModifySubmit(string kxParam)
        {
            var item = this.guestShowNameCom.SelectedItem as GuestShowItem;
            string param = string.Empty;
            if (item != null)
            {
                param = JsonUtils.Serialize(item.Parameter);
                if (kxParam != param)
                {
                    lock (Global.Instance.SyncLock)
                    {
                        using (var db = Global.Instance.OpenDataBase)
                        {
                            GuestShowDevice device = new GuestShowDevice();
                            device.Id = IdWorkerUtils.Instance.NextId();
                            device.TenantId = Global.Instance.Authc.TenantId;
                            device.Name = item.Name;
                            device.Param = kxParam;
                            device.IsLocal = 1;
                            db.Save(device);
                        }
                        item.Parameter = JsonUtils.Deserialize<POSV.Bean.GuestShowParameter>(kxParam);
                    }
                }
            }
        }

        /// <summary>
        /// 客显测试
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnTestClick(object sender, EventArgs e)
        {
            try
            {
                GuestShowUtils.RefreshInstance();

                GuestShowUtils.Instance.DisplayData(CustomerDisplayType.Price, "1111.11");
                System.Threading.Thread.Sleep(1000);
                GuestShowUtils.Instance.DisplayData(CustomerDisplayType.Total, "8888.88");
                System.Threading.Thread.Sleep(1000);
                GuestShowUtils.Instance.DisplayData(CustomerDisplayType.Recive, "6666.66");
                System.Threading.Thread.Sleep(1000);
                GuestShowUtils.Instance.DisplayData(CustomerDisplayType.Change, "0.01");
                System.Threading.Thread.Sleep(1000);
                GuestShowUtils.Instance.DisplayData(CustomerDisplayType.Clear, "");

            }
            catch (Exception ex)
            {
                LOGGER.Error(ex, "客显测试异常");
                MessageBox.Show(ex.Message);
            }
        }

    }
}