using HMI.UI.Util;
using Panuon.WPF.UI;
using Plugin.DeviceConfig.Entity;
using Plugin.DeviceConfig.Model;
using System;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows;

namespace Plugin.DeviceConfig
{
    /// <summary>
    /// VersionManageModal.xaml 的交互逻辑
    /// </summary>
    public partial class VersionManageModal : WindowX
    {
        private DeviceConfigModel _model;
        private ObservableCollection<VersionDisplayItem> _versions = new();
        private bool _changed;

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

        /// <summary>
        /// 打开弹窗
        /// </summary>
        public bool? Open(DeviceConfigModel model)
        {
            _model = model;
            versionListView.ItemsSource = _versions;
            LoadVersions();
            return ShowDialog();
        }

        private void LoadVersions()
        {
            try
            {
                var list = _model.GetConfigVersions();
                _versions.Clear();
                foreach (var v in list)
                {
                    _versions.Add(new VersionDisplayItem
                    {
                        VersionId = v.VersionId,
                        Status = v.Status,
                        Hash = v.Hash,
                        HashShort = v.Hash.Length > 16 ? v.Hash.Substring(0, 16) + "..." : v.Hash,
                        Author = v.Author,
                        Timestamp = v.Timestamp,
                        DiffDescription = v.DiffDescription,
                    });
                }
            }
            catch (Exception ex)
            {
                ToastHelper.Error($"加载版本列表失败: {ex.Message}");
            }
        }

        #region 操作

        private void PublishBtn_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var selected = versionListView.SelectedItem as VersionDisplayItem;
                if (selected == null)
                {
                    ToastHelper.Warning("请先选中一个版本");
                    return;
                }
                if (selected.Status != VersionStatus.Draft)
                {
                    ToastHelper.Warning("只有 Draft 状态的版本可以发布");
                    return;
                }

                if (MsgBoxHelper.WarnMessage(this, $"确定要发布版本 [{selected.VersionId}] 吗？") != MessageBoxResult.OK)
                    return;

                // 计算最新 Hash
                var hash = _model.ComputeConfigHash();
                selected.Hash = hash;
                selected.HashShort = hash.Length > 16 ? hash.Substring(0, 16) + "..." : hash;
                selected.Status = VersionStatus.Published;
                selected.Timestamp = DateTime.Now;

                var ver = new DeviceConfigVersion
                {
                    VersionId = selected.VersionId,
                    Status = VersionStatus.Published,
                    Hash = hash,
                    Author = selected.Author,
                    Timestamp = DateTime.Now,
                    DiffDescription = selected.DiffDescription,
                };
                _model.SaveConfigVersion(ver);

                _changed = true;
                LoadVersions();
                ToastHelper.Success($"版本 [{selected.VersionId}] 已发布");
            }
            catch (Exception ex)
            {
                ToastHelper.Error($"发布失败: {ex.Message}");
            }
        }

        private void ApplyBtn_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var selected = versionListView.SelectedItem as VersionDisplayItem;
                if (selected == null)
                {
                    ToastHelper.Warning("请先选中一个版本");
                    return;
                }
                if (selected.Status != VersionStatus.Published)
                {
                    ToastHelper.Warning("只有 Published 状态的版本可以应用");
                    return;
                }

                // 检查当前 Effective 版本
                var currentEffective = _versions.FirstOrDefault(v => v.Status == VersionStatus.Effective);
                if (currentEffective != null)
                {
                    if (MsgBoxHelper.WarnMessage(this,
                        $"当前已有生效版本 [{currentEffective.VersionId}]，应用新版本将替换它。\n是否继续？") != MessageBoxResult.OK)
                    {
                        return;
                    }

                    // 将原 Effective 改回 Published
                    _model.UpdateVersionStatus(currentEffective.VersionId, VersionStatus.Published.ToString());
                }

                if (MsgBoxHelper.WarnMessage(this, $"确定要将 [{selected.VersionId}] 设为生效版本吗？") != MessageBoxResult.OK)
                    return;

                _model.UpdateVersionStatus(selected.VersionId, VersionStatus.Effective.ToString());
                _changed = true;
                LoadVersions();
                ToastHelper.Success($"版本 [{selected.VersionId}] 已设为生效版本");
            }
            catch (Exception ex)
            {
                ToastHelper.Error($"应用版本失败: {ex.Message}");
            }
        }

        private void DetailBtn_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var selected = versionListView.SelectedItem as VersionDisplayItem;
                if (selected == null)
                {
                    ToastHelper.Warning("请先选中一个版本");
                    return;
                }

                tbDetailHash.Text = selected.Hash;
                tbDetailDiff.Text = selected.DiffDescription;
                tbDetailAuthor.Text = $"{selected.Author}  @  {selected.Timestamp:yyyy-MM-dd HH:mm:ss}";
                detailPanel.Visibility = Visibility.Visible;
            }
            catch (Exception ex)
            {
                ToastHelper.Error($"加载详情失败: {ex.Message}");
            }
        }

        private void RfhBtn_Click(object sender, RoutedEventArgs e)
        {
            LoadVersions();
            ToastHelper.Success("已刷新");
        }

        private void CloseBtn_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = _changed;
            Close();
        }

        #endregion
    }

    /// <summary>
    /// 版本显示项
    /// </summary>
    public class VersionDisplayItem
    {
        public string VersionId { get; set; } = string.Empty;
        public VersionStatus Status { get; set; }
        public string Hash { get; set; } = string.Empty;
        public string HashShort { get; set; } = string.Empty;
        public string Author { get; set; } = string.Empty;
        public DateTime Timestamp { get; set; }
        public string DiffDescription { get; set; } = string.Empty;
    }
}