using CommunityToolkit.Mvvm.ComponentModel;
using HMI.Base;
using HMI.Core.Util;
using HMI.UI.Util;
using Plugin.DeviceConfig.Entity;
using Plugin.DeviceConfig.Model;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

namespace Plugin.DeviceConfig
{
    /// <summary>
    /// DeviceConfig.xaml 的交互逻辑
    /// </summary>
    [ObservableObject]
    public partial class DeviceConfig : SimpleMaskControl
    {
        private DeviceConfigModel _model;

        [ObservableProperty]
        private ObservableCollection<DeviceDefinition> devices = new();

        [ObservableProperty]
        private ObservableCollection<DeviceChannel> channels = new();

        [ObservableProperty]
        private ObservableCollection<SlotDeviceMapping> slotMappings = new();

        [ObservableProperty]
        private DeviceDefinition selectedDevice;

        [ObservableProperty]
        private string currentVersionStatus = "Draft";

        [ObservableProperty]
        private ObservableCollection<TreeNode> treeCategories = new();

        public DeviceConfig()
        {
            DataContext = this;
            InitializeComponent();
        }

        /// <summary>
        /// 强制刷新数据（供集成测试预置设备后调用）
        /// </summary>
        public void ForceRefreshForTest()
        {
            try { RefreshAllData(); }
            catch (Exception ex) { log.Error("ForceRefreshForTest Error.", ex); }
        }

        public override void InitFinish()
        {
            base.InitFinish();
            try
            {
                _model = new DeviceConfigModel();
                var dbPath = Path.Combine(BaseFolder, "data.db");
                _model.InitDatabase(dbPath);
                LoadTreeCategories();
                RefreshAllData();
            }
            catch (Exception ex)
            {
                log.Error("InitFinish Error.", ex);
                ToastHelper.Error($"初始化失败: {ex.Message}");
            }
        }

        #region 树分类加载

        private void LoadTreeCategories()
        {
            TreeCategories = new ObservableCollection<TreeNode>
            {
                new TreeNode { Name = "全部设备", Kind = null, Children = new ObservableCollection<TreeNode>() },
                new TreeNode { Name = "电源系统", Kind = DeviceKind.PowerSupply, Children = new ObservableCollection<TreeNode>() },
                new TreeNode { Name = "CAN/LIN", Kind = DeviceKind.CanDevice, Children = new ObservableCollection<TreeNode>() },
                new TreeNode { Name = "PLC/IO", Kind = DeviceKind.PlcDevice, Children = new ObservableCollection<TreeNode>() },
                new TreeNode { Name = "温箱/DAQ", Kind = null, Children = new ObservableCollection<TreeNode>(),
                    FilterKinds = new[] { DeviceKind.Chamber, DeviceKind.DAQ } },
            };
            deviceTree.ItemsSource = TreeCategories;
        }

        #endregion

        #region 数据加载

        private void RefreshAllData()
        {
            try
            {
                var deviceList = _model.GetAllDevices();
                Devices = new ObservableCollection<DeviceDefinition>(deviceList);
                SlotMappings = new ObservableCollection<SlotDeviceMapping>(_model.GetSlotMappings());
                RefreshTreeDevices();
                LoadLatestVersionStatus();
            }
            catch (Exception ex)
            {
                log.Error("RefreshAllData Error.", ex);
                ToastHelper.Error($"加载数据失败: {ex.Message}");
            }
        }

        private void RefreshTreeDevices()
        {
            foreach (var cat in TreeCategories)
            {
                cat.Children.Clear();
                IEnumerable<DeviceDefinition> filtered = Devices;
                if (cat.Kind.HasValue)
                {
                    filtered = Devices.Where(d => d.Kind == cat.Kind.Value);
                }
                else if (cat.FilterKinds != null)
                {
                    filtered = Devices.Where(d => cat.FilterKinds.Contains(d.Kind));
                }
                foreach (var dev in filtered)
                {
                    cat.Children.Add(new TreeNode { Name = $"{dev.DeviceId} ({dev.Endpoint})", Tag = dev });
                }
            }
        }

        private void LoadLatestVersionStatus()
        {
            try
            {
                var versions = _model.GetConfigVersions();
                var effective = versions.FirstOrDefault(v => v.Status == VersionStatus.Effective);
                if (effective != null)
                {
                    CurrentVersionStatus = "Effective";
                }
                else if (versions.Any(v => v.Status == VersionStatus.Published))
                {
                    CurrentVersionStatus = "Published";
                }
                else
                {
                    CurrentVersionStatus = "Draft";
                }
            }
            catch (Exception ex)
            {
                log.Error("LoadLatestVersionStatus Error.", ex);
            }
        }

        #endregion

        #region 事件处理

        private void SimpleMaskControl_Loaded(object sender, RoutedEventArgs e)
        {
            // InitFinish 已加载数据，此处仅做一次性 UI 初始化
            Loaded -= SimpleMaskControl_Loaded;
        }

        private void DeviceTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            if (e.NewValue is TreeNode node && node.Tag is DeviceDefinition dev)
            {
                SelectDevice(dev);
            }
        }

        private void SearchBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            try
            {
                var keyword = searchBox.Text?.Trim() ?? string.Empty;
                if (string.IsNullOrEmpty(keyword))
                {
                    RefreshTreeDevices();
                    return;
                }
                foreach (var cat in TreeCategories)
                {
                    cat.Children.Clear();
                    var matched = Devices.Where(d =>
                        d.DeviceId.IndexOf(keyword, StringComparison.OrdinalIgnoreCase) >= 0 ||
                        d.Endpoint.IndexOf(keyword, StringComparison.OrdinalIgnoreCase) >= 0 ||
                        d.DriverType.IndexOf(keyword, StringComparison.OrdinalIgnoreCase) >= 0);
                    if (cat.Kind.HasValue)
                        matched = matched.Where(d => d.Kind == cat.Kind.Value);
                    else if (cat.FilterKinds != null)
                        matched = matched.Where(d => cat.FilterKinds.Contains(d.Kind));

                    foreach (var dev in matched)
                        cat.Children.Add(new TreeNode { Name = $"{dev.DeviceId} ({dev.Endpoint})", Tag = dev });
                }
            }
            catch (Exception ex)
            {
                log.Error("SearchBox_TextChanged Error.", ex);
            }
        }

        private void SelectDevice(DeviceDefinition dev)
        {
            try
            {
                SelectedDevice = dev;
                tbDeviceId.Text = dev.DeviceId;
                tbKind.Text = dev.Kind.ToString();
                tbDriverType.Text = dev.DriverType;
                tbTransport.Text = dev.Transport.ToString();
                tbEndpoint.Text = dev.Endpoint;
                tbEffectiveVersion.Text = dev.EffectiveVersion;

                var chList = _model.GetChannelsByDevice(dev.DeviceId);
                Channels = new ObservableCollection<DeviceChannel>(chList);
            }
            catch (Exception ex)
            {
                log.Error("SelectDevice Error.", ex);
                ToastHelper.Error($"加载设备详情失败: {ex.Message}");
            }
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Button btn = sender as Button;
            try
            {
                switch (btn?.Name)
                {
                    case "addBtn":
                        OpenDeviceEditModal(null);
                        break;
                    case "editBtn":
                        EditSelectedDevice();
                        break;
                    case "delBtn":
                        DeleteSelectedDevice();
                        break;
                    case "batchBtn":
                        OpenBatchGenerateModal();
                        break;
                    case "importBtn":
                        ImportDevices();
                        break;
                    case "exportBtn":
                        ExportDevices();
                        break;
                    case "versionBtn":
                        OpenVersionManageModal();
                        break;
                    case "rfhBtn":
                        RefreshAllData();
                        ToastHelper.Success("刷新成功");
                        break;
                    case "saveDraftBtn":
                        SaveDraft();
                        break;
                    case "publishBtn":
                        PublishVersion();
                        break;
                    case "applyBtn":
                        ApplyVersion();
                        break;
                }
            }
            catch (Exception ex)
            {
                log.Error("Button_Click Error.", ex);
                ToastHelper.Error($"操作失败: {ex.Message}");
            }
        }

        #endregion

        #region 弹窗

        private void OpenDeviceEditModal(DeviceDefinition device)
        {
            try
            {
                device ??= new DeviceDefinition();
                var win = new DeviceEditModal
                {
                    Title = string.IsNullOrEmpty(device.DeviceId) ? "新增设备" : "编辑设备",
                    Owner = Window.GetWindow(this)
                };
                if (win.Open(device, _model) == true)
                {
                    RefreshAllData();
                }
            }
            catch (Exception ex)
            {
                log.Error("OpenDeviceEditModal Error.", ex);
                ToastHelper.Error($"打开编辑弹窗失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 编辑当前选中的设备
        /// </summary>
        private void EditSelectedDevice()
        {
            try
            {
                if (SelectedDevice == null)
                {
                    ToastHelper.Warning("请先在左侧设备树中选择一个设备");
                    return;
                }

                // 使用当前设备信息的副本避免直接修改内部数据
                var editingDevice = new DeviceDefinition
                {
                    DeviceId = SelectedDevice.DeviceId,
                    Kind = SelectedDevice.Kind,
                    DriverType = SelectedDevice.DriverType,
                    Transport = SelectedDevice.Transport,
                    Endpoint = SelectedDevice.Endpoint,
                    EffectiveVersion = SelectedDevice.EffectiveVersion,
                    CreatedAt = SelectedDevice.CreatedAt,
                    UpdatedAt = SelectedDevice.UpdatedAt
                };

                var win = new DeviceEditModal
                {
                    Title = $"编辑设备 - {SelectedDevice.DeviceId}",
                    Owner = Window.GetWindow(this)
                };
                if (win.Open(editingDevice, _model) == true)
                {
                    RefreshAllData();
                    ToastHelper.Success($"设备 {editingDevice.DeviceId} 已更新");
                }
            }
            catch (Exception ex)
            {
                log.Error("EditSelectedDevice Error.", ex);
                ToastHelper.Error($"编辑设备失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 删除当前选中的设备（同时清理相关通道与 Slot 映射）
        /// </summary>
        private void DeleteSelectedDevice()
        {
            try
            {
                if (SelectedDevice == null)
                {
                    ToastHelper.Warning("请先在左侧设备树中选择一个设备");
                    return;
                }

                var deviceId = SelectedDevice.DeviceId;
                if (MsgBoxHelper.WarnMessage(Window.GetWindow(this),
                    $"确定要删除设备 [{deviceId}] 吗？\n该操作将同时删除相关的通道与 Slot 映射，且不可恢复。") != MessageBoxResult.OK)
                {
                    return;
                }

                // 先删除关联的通道与 Slot 映射
                var channels = _model.GetChannelsByDevice(deviceId);
                foreach (var ch in channels)
                {
                    _model.DeleteChannel(deviceId, ch.ChannelId);
                }

                var mappings = _model.GetSlotMappings();
                foreach (var m in mappings.Where(x => x.DeviceId == deviceId))
                {
                    _model.DeleteSlotMapping(m.SlotId, m.Capability, m.Version);
                }

                // 删除设备本身
                _model.DeleteDevice(deviceId);

                SelectedDevice = null;
                ClearDeviceDetails();
                RefreshAllData();
                ToastHelper.Success($"设备 {deviceId} 已删除");
            }
            catch (Exception ex)
            {
                log.Error("DeleteSelectedDevice Error.", ex);
                ToastHelper.Error($"删除设备失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 清空中栏设备详情展示
        /// </summary>
        private void ClearDeviceDetails()
        {
            tbDeviceId.Text = string.Empty;
            tbKind.Text = string.Empty;
            tbDriverType.Text = string.Empty;
            tbTransport.Text = string.Empty;
            tbEndpoint.Text = string.Empty;
            tbEffectiveVersion.Text = string.Empty;
            Channels = new ObservableCollection<DeviceChannel>();
        }

        private void OpenBatchGenerateModal()
        {
            try
            {
                var win = new BatchGenerateModal
                {
                    Title = "批量生成设备",
                    Owner = Window.GetWindow(this)
                };
                if (win.Open(_model) == true)
                {
                    RefreshAllData();
                }
            }
            catch (Exception ex)
            {
                log.Error("OpenBatchGenerateModal Error.", ex);
                ToastHelper.Error($"打开批量生成弹窗失败: {ex.Message}");
            }
        }

        private void OpenVersionManageModal()
        {
            try
            {
                var win = new VersionManageModal
                {
                    Title = "版本管理",
                    Owner = Window.GetWindow(this)
                };
                if (win.Open(_model) == true)
                {
                    RefreshAllData();
                }
            }
            catch (Exception ex)
            {
                log.Error("OpenVersionManageModal Error.", ex);
                ToastHelper.Error($"打开版本管理弹窗失败: {ex.Message}");
            }
        }

        #endregion

        #region 版本操作

        private void SaveDraft()
        {
            try
            {
                var versionId = $"V{DateTime.Now:yyyyMMddHHmmss}";
                var hash = _model.ComputeConfigHash();
                var ver = new DeviceConfigVersion
                {
                    VersionId = versionId,
                    Status = VersionStatus.Draft,
                    Hash = hash,
                    Author = Environment.UserName,
                    Timestamp = DateTime.Now,
                    DiffDescription = "保存草稿"
                };
                _model.SaveConfigVersion(ver);
                CurrentVersionStatus = "Draft";
                ToastHelper.Success($"草稿已保存: {versionId}");
            }
            catch (Exception ex)
            {
                log.Error("SaveDraft Error.", ex);
                ToastHelper.Error($"保存草稿失败: {ex.Message}");
            }
        }

        private void PublishVersion()
        {
            try
            {
                var versions = _model.GetConfigVersions();
                var draft = versions.FirstOrDefault(v => v.Status == VersionStatus.Draft);
                if (draft == null)
                {
                    ToastHelper.Warning("没有可发布的草稿版本");
                    return;
                }
                var hash = _model.ComputeConfigHash();
                draft.Hash = hash;
                draft.Status = VersionStatus.Published;
                draft.Timestamp = DateTime.Now;
                _model.SaveConfigVersion(draft);
                CurrentVersionStatus = "Published";
                ToastHelper.Success($"版本 {draft.VersionId} 已发布");
            }
            catch (Exception ex)
            {
                log.Error("PublishVersion Error.", ex);
                ToastHelper.Error($"发布失败: {ex.Message}");
            }
        }

        private void ApplyVersion()
        {
            try
            {
                var versions = _model.GetConfigVersions();
                var published = versions.FirstOrDefault(v => v.Status == VersionStatus.Published);
                if (published == null)
                {
                    ToastHelper.Warning("没有可应用的已发布版本");
                    return;
                }

                var effective = versions.FirstOrDefault(v => v.Status == VersionStatus.Effective);
                if (effective != null)
                {
                    if (MsgBoxHelper.WarnMessage(Window.GetWindow(this),
                        $"当前已有生效版本 [{effective.VersionId}]，应用新版本将替换它，是否继续？") != MessageBoxResult.OK)
                    {
                        return;
                    }
                    effective.Status = VersionStatus.Published;
                    _model.SaveConfigVersion(effective);
                }

                published.Status = VersionStatus.Effective;
                published.Timestamp = DateTime.Now;
                _model.SaveConfigVersion(published);
                CurrentVersionStatus = "Effective";
                ToastHelper.Success($"版本 {published.VersionId} 已应用为生效版本");
            }
            catch (Exception ex)
            {
                log.Error("ApplyVersion Error.", ex);
                ToastHelper.Error($"应用版本失败: {ex.Message}");
            }
        }

        #endregion

        #region 导入导出

        private void ImportDevices()
        {
            try
            {
                var ofd = new Microsoft.Win32.OpenFileDialog
                {
                    Filter = "XML文件|*.xml|JSON文件|*.json"
                };
                if (ofd.ShowDialog() == true)
                {
                    // TODO: 实现导入逻辑
                    ToastHelper.Success($"已从 {Path.GetFileName(ofd.FileName)} 导入");
                    RefreshAllData();
                }
            }
            catch (Exception ex)
            {
                log.Error("ImportDevices Error.", ex);
                ToastHelper.Error($"导入失败: {ex.Message}");
            }
        }

        private void ExportDevices()
        {
            try
            {
                var sfd = new Microsoft.Win32.SaveFileDialog
                {
                    FileName = "DeviceConfig",
                    Filter = "XML文件|*.xml"
                };
                if (sfd.ShowDialog() == true)
                {
                    // TODO: 实现导出逻辑
                    ToastHelper.Success("导出成功");
                }
            }
            catch (Exception ex)
            {
                log.Error("ExportDevices Error.", ex);
                ToastHelper.Error($"导出失败: {ex.Message}");
            }
        }

        #endregion
    }

    /// <summary>
    /// 树节点模型
    /// </summary>
    public class TreeNode
    {
        public string Name { get; set; } = string.Empty;
        public DeviceKind? Kind { get; set; }
        public DeviceKind[] FilterKinds { get; set; }
        public object Tag { get; set; }
        public ObservableCollection<TreeNode> Children { get; set; } = new();
    }
}