using MvvmScaffoldFrame48.Model.StorageModel.Configs;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MvvmScaffoldFrame48.DLL.ConfigTools
{
    public class ConfigService : IConfigService
    {
        #region 属性
        /// <summary>
        /// 单例
        /// </summary>
        private static ConfigService instance;
        public static ConfigService Instance => instance;

        /// <summary>
        /// 相机进程参数
        /// </summary>
        private List<CameraProcessConfigModel> _camerasConfig;
        public List<CameraProcessConfigModel> CamerasProcessConfig => _camerasConfig;
        #endregion

        #region 公共事件

        /// <summary>
        /// 加载参数
        /// </summary>
        /// <returns></returns>
        public bool LoadAsync()
        {
            bool result = false;
            if (!Directory.Exists(".\\Config\\"))
            {
                Directory.CreateDirectory(".\\Config\\");
                return result;
            }
            GetCameraProcessConfig();
            LoadConfigEvent?.Invoke(this, EventArgs.Empty);
            result = true;
            return result;
        }

        /// <summary>
        /// 保存参数
        /// </summary>
        public void SaveAsync()
        {
            if (!Directory.Exists(".\\Config\\"))
            {
                Directory.CreateDirectory(".\\Config\\");
            }
            SaveCameraProcessConfig();
        }
        #endregion

        #region 回调事件
        /// <summary>
        /// 加载参数的回调方法
        /// </summary>
        public event EventHandler LoadConfigEvent; 
        /// <summary>
        /// 保存参数的回调方法
        /// </summary>
        public event EventHandler SaveConfigEvent;
        #endregion

        #region 私有事件
        private ConfigService() { }

        private void GetCameraProcessConfig()
        {
            if (File.Exists(".\\Config\\CameraConfig.xml"))
            {
                _camerasConfig = XMLReadWrite.DeserializeFromXml<List<CameraProcessConfigModel>>(".\\Config\\CameraProcessConfig.xml");
            }
            else
            {
                //测试用代码，此处应为创建空配置，后续由图形界面控制新建配置
                _camerasConfig = new List<CameraProcessConfigModel>()
                {
                    CreateCameraConfiguration(0, "ProcessingAlgorithm_CCDShuLi"),
                };
            }
        }

        private void SaveCameraProcessConfig()
        {
            XMLReadWrite.SerializeToXml(_camerasConfig, ".\\Config\\CameraProcessConfig.xml");
        }


        /// <summary>
        /// 创建新的相机配置
        /// </summary>
        private CameraProcessConfigModel CreateCameraConfiguration(int cameraId, string ProcessingAlgorithm)
        {
            var config = new CameraProcessConfigModel
            {
                CameraId = cameraId,
                CameraSN = "K53474176",
                IsEnabled = true
            };

            switch (ProcessingAlgorithm)
            {
                case "ProcessingAlgorithm":
                    config.ProcessingAlgorithmName = "ProcessingAlgorithm";
                    config.AlgorithmParameters = XMLReadWrite.SerializeToString(new ProcessingAlgorithmConfigModel()
                    {
                        Threshold = 0.5,
                        MinArea = 100,
                        EnableFiltering = true,
                        FilterType = "FilterType"
                    });
                    break;
                case "ProcessingAlgorithm_CCDShuLi":
                    config.ProcessingAlgorithmName = "ProcessingAlgorithm_CCDShuLi";
                    config.AlgorithmParameters = XMLReadWrite.SerializeToString(new ShuLiConfigClassModel());
                    break;
            }

            return config;
        }
        #endregion
    }
}