using Model;
using Newtonsoft.Json;
using Permission;
using PlcUiForm;
using Sunny.UI;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace YangjieTester.用户管理
{
    [FormDescriptionAttribute("权限管理")]
    public partial class PermissionConfigForm : PlcBaseForm
    {
        private string ROOT_NAMESPACE = "YangjieTester"; // ← 你要扫描的根命名空间

        private PermissionLevel currentRoleLevel = PermissionLevel.操作工; // 默认操作工
        private Dictionary<PermissionLevel, PermissionProfile> roleProfiles = new Dictionary<PermissionLevel, PermissionProfile>();

         List<PermissionLevel> permissionLevels=new List<PermissionLevel>()
        {
             PermissionLevel.操作工,
             PermissionLevel.工程师,
             PermissionLevel.技术员,
             PermissionLevel.管理员,
        };

        private readonly string[] roleNames;

        public PermissionConfigForm()
        {
            ROOT_NAMESPACE = this.GetType().Namespace.Split('.')[0];
            InitializeComponent();
            treeView1.CheckBoxes = true; // 启用复选框
            treeView1.AfterCheck += treeView1_AfterCheck; // ← 添加这一行

            roleNames= permissionLevels.Select(level => Enum.GetName(typeof(PermissionLevel), level)).ToArray();

            // 👇 添加这一行
            InitializeRoleComboBox();
            LoadAllProfiles(); // 加载4个角色的权限
            LoadPermissionControlsIntoTreeView(); // 构建树结构（不带勾选）
            RefreshTreeViewCheckState(currentRoleLevel); // 应用当前角色的勾选状态
        }
        private void InitializeRoleComboBox()
        {
            //comboBoxRole.Items.Clear();
            //for (int i = 0; i < roleNames.Length; i++)
            //{
            //    comboBoxRole.Items.Add($"{roleNames[i]} ({i})");
            //}
            comboBoxRole.DataSource = permissionLevels;

            comboBoxRole.SelectedItem = comboBoxRole.Items[0];
            comboBoxRole.SelectedIndexChanged += (s, e) =>
            {
                SaveCurrentProfile(); // 先保存当前角色的勾选
                currentRoleLevel = (PermissionLevel)comboBoxRole.SelectedItem;
                RefreshTreeViewCheckState(currentRoleLevel); // 根据新权限重设 CheckBox
            };
        }
        private void LoadAllProfiles()
        {
            foreach (var item in permissionLevels)
            {
                roleProfiles[item] = PermissionManager.GetRoleProfile(item);
            }
        }
        private void SaveCurrentProfile()
        {
            var profile = new PermissionProfile();

            // 遍历 TreeView 所有叶子节点（控件节点）
            CollectCheckedControls(treeView1.Nodes, profile.AuthorizedControls);

            roleProfiles[currentRoleLevel] = profile;
        }

        private void CollectCheckedControls(TreeNodeCollection nodes, List<AuthorizedControl> list)
        {
            foreach (TreeNode node in nodes)
            {
                if (node.Tag is ControlInfo info && node.Checked)
                {
                    list.Add(new AuthorizedControl
                    {
                        Namespace = info.NameSpace,
                        FormType = info.FormType,
                        ControlName = info.ControlName
                    });
                }
                CollectCheckedControls(node.Nodes, list);
            }
        }

        private bool isRestoringCheckState = false;
        private void RefreshTreeViewCheckState(PermissionLevel roleLevel)
        {
            var currentProfile = roleProfiles.TryGetValue(roleLevel, out var profile)
            ? profile
            : new PermissionProfile();

            // 构建快速查找字典：(FormType + "." + ControlName) -> bool
            var authorizedSet = new HashSet<string>(
                currentProfile.AuthorizedControls.Select(c => $"{c.Namespace}.{c.FormType}.{c.ControlName}")
            );
            //isRestoringCheckState = true;
            foreach (TreeNode node in treeView1.Nodes)
            {
                node.Checked = false;
            }
            SetCheckStateRecursive(treeView1.Nodes, authorizedSet);
            //isRestoringCheckState = false;
        }

        private void SetCheckStateRecursive(TreeNodeCollection nodes, HashSet<string> authorizedSet)
        {
            foreach (TreeNode node in nodes)
            {
                if (node.Tag is ControlInfo info)
                {
                    bool isChecked = authorizedSet.Contains($"{info.NameSpace}.{info.FormType}.{info.ControlName}");
                    node.Checked = isChecked;
                }
                SetCheckStateRecursive(node.Nodes, authorizedSet);
            }

            // 注意：此时不要触发 AfterCheck（避免级联），所以暂时关闭事件？
            // 或者我们重构：AfterCheck 只处理用户点击，程序设置不触发逻辑
        }
        private void LoadPermissionControlsIntoTreeView()
        {
            treeView1.Nodes.Clear();

            var assembly = Assembly.GetExecutingAssembly();
            var currentType = typeof(PermissionConfigForm);

            // 1. 获取所有在 ROOT_NAMESPACE 及其子命名空间下的非抽象 Form 类型（排除自己）
            var formTypes = assembly.GetTypes()
                .Where(t => t.IsSubclassOf(typeof(Form))
                            && !t.IsAbstract
                            && t != currentType
                            && !string.IsNullOrEmpty(t.Namespace)
                            && (t.Namespace == ROOT_NAMESPACE || t.Namespace.StartsWith(ROOT_NAMESPACE + ".")))
                .ToList();

            // 2. 按命名空间分组
            var formsByNamespace = formTypes
                .GroupBy(f => f.Namespace)
                .OrderBy(g => g.Key)
                .ToList();

            foreach (var nsGroup in formsByNamespace)
            {
                TreeNode nsNode = new TreeNode(nsGroup.Key);
                
                treeView1.Nodes.Add(nsNode);

                foreach (var formType in nsGroup.OrderBy(f => f.Name))
                {
                    //  TreeNode formNode = new TreeNode(formType.Name);
                    TreeNode formNode =  new TreeNode(FormEx.GetFormDescription(formType));
                    nsNode.Nodes.Add(formNode);

                    // 3. 扫描该窗体中所有实现了 IPermissionControl 的控件
                    
                    try
                    {
                        var permissionControls = GetPermissionControlFields(formType);
                        //using (Form instance = (Form)Activator.CreateInstance(formType))
                        {
                            //var permissionControls = FindPermissionControls(instance.Controls, "");
                            foreach (var item in permissionControls.OrderBy(x => x.ControlName))
                            {
                                TreeNode ctrlNode = new TreeNode($"{item.ControlName}");
                                ctrlNode.Tag = new ControlInfo
                                {
                                    NameSpace = nsGroup.Key,
                                    FormType = formType.Name,
                                    ControlName= item.ControlName,
                                    ControlType = item.ControlType
                                };
                                formNode.Nodes.Add(ctrlNode);
                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        TreeNode errorNode = new TreeNode($"[加载失败: {ex.Message}]")
                        {
                            ForeColor = Color.Red
                        };
                        formNode.Nodes.Add(errorNode);
                    }
                }
            }
        }

        private List<ControlInfo> GetPermissionControlFields(Type formType)
        {
            var list = new List<ControlInfo>();

            // 遍历窗体类中所有字段（包括私有、继承的）
            var fields = formType.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.DeclaredOnly);
           
            foreach (var field in fields)
            {
                Type fieldType = field.FieldType;

                // 1. 必须是 Control 或其子类
                if (!typeof(Control).IsAssignableFrom(fieldType))
                    continue;

                // 2. 必须实现 IPermissionControl 接口
                if (!typeof(IPermissionControl).IsAssignableFrom(fieldType))
                    continue;

                //// 3. 必须具有名为 "WriteNode" 的公共实例属性（可读或可写均可）
                //var writeNodeProperty = fieldType.GetProperty(
                //    "WriteNode",
                //    BindingFlags.Public | BindingFlags.Instance);

                //if (writeNodeProperty == null)
                //    continue; // 没有 WriteNode 属性，跳过

                if (typeof(MyUiButton).IsAssignableFrom(fieldType) || typeof(MyUiInput).IsAssignableFrom(fieldType) || typeof(MyUIComboBox).IsAssignableFrom(fieldType))
                {
                    // ✅ 全部条件满足，加入列表
                    list.Add(new ControlInfo
                    {
                        ControlName = field.Name,
                        ControlType = fieldType.Name,
                    });
                }
            }
            return list;
        }
        private bool isUpdating = false; // 防止 AfterCheck 递归调用
        private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            // 防止递归触发
            if (isUpdating || isRestoringCheckState) return;

            isUpdating = true;
            try
            {
                // 1. 子节点跟随父节点
                SetChildNodesChecked(e.Node, e.Node.Checked);

                // 👇 关键修复：如果当前节点被设为 Checked（全选），立即恢复其默认颜色
                if (e.Node.Checked)
                {
                    e.Node.ForeColor = treeView1.ForeColor; // 恢复默认文字颜色
                }

                // 2. 更新所有祖先节点的状态（部分选中 or 全选/全不选）
                UpdateParentCheckState(e.Node.Parent);
            }
            finally
            {
                isUpdating = false;
            }
        }

        // 递归设置所有子节点状态
        private void SetChildNodesChecked(TreeNode node, bool isChecked)
        {
            foreach (TreeNode child in node.Nodes)
            {
                child.Checked = isChecked;
                SetChildNodesChecked(child, isChecked);
            }
        }
        // 递归更新父节点状态
        private void UpdateParentCheckState(TreeNode parentNode)
        {
            if (parentNode == null) return;

            bool allChecked = true;
            bool allUnchecked = true;

            foreach (TreeNode child in parentNode.Nodes)
            {
                if (child.Checked)
                    allUnchecked = false;
                else
                    allChecked = false;
            }

            if (allChecked)
                parentNode.Checked = true;
            else if (allUnchecked)
                parentNode.Checked = false;
            else
                parentNode.Checked = false; // 逻辑上是“部分选中”，但 CheckBox 只能显示 false

            // 👇 修复：明确根据状态设置颜色
            if (allChecked || allUnchecked)
            {
                parentNode.ForeColor = treeView1.ForeColor; // 全选或全不选 → 正常颜色
            }
            else
            {
                parentNode.ForeColor = Color.LightGray; // 部分选中 → 灰色
            }


            // 继续向上更新祖父节点
            UpdateParentCheckState(parentNode.Parent);
        }


        private void btnSave_Click(object sender, EventArgs e)
        {
            SaveCurrentProfile();
            foreach (var item in roleProfiles)
            {
                PermissionManager.SaveRoleProfile(item.Key, item.Value);
            }
            PermissionManager.ResetPermissions();
            MessageBox.Show("保存完成");
        }
    }
    public class ControlInfo
    {
        public string NameSpace { get; set; } = "";
        public string FormType { get; set; } = "";
        public string ControlName { get; set; } = "";
        public string ControlType { get; set; } = "";
    }
}