using SamplePre.Models.Ext;
using SamplePre.Models.Tables;
using SamplePre.ProcessBll.BLL;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace SamplePreSystem.UI.ViewModel.ConfigManager
{
    public class PermissionViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        RolesBll rolesBll = new RolesBll();

        config_role configRole;

        public PermissionViewModel(RoleViewModel vm)
        {
            configRole = vm.ConfigRole;

            RoleName = configRole.name;

            GetData();
        }

        protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private string _roleName;

        public string RoleName
        {
            get { return _roleName; }
            set { _roleName = value; }
        }



        private List<TreeItemModel> _funList = new List<TreeItemModel>();

        public List<TreeItemModel> FunList
        {
            get { return _funList; }
            set { _funList = value;

                OnPropertyChanged();
            }
        }


        public void GetData()
        {
            var FunListTemp = rolesBll.GetFuncDataTree();

            foreach (var item in FunListTemp.Where(p=>p.parent_id == 0))
            {
                // 根节点1
                var root1 = new TreeItemModel { Id = item.id, Name = item.name };
                foreach(var child in FunListTemp.Where(p => p.parent_id == item.id))
                {
                    root1.Children.Add(new TreeItemModel { Id = child.id, Name = child.name, Parent = root1 });
                  
                }

                FunList.Add(root1);
            }


            //选择中角色已有权限
            List<int> ids = rolesBll.GetPermission(configRole.id);
            LoadRolePermissions(ids);

        }

        /// <summary>
        /// 加载指定角色已分配的权限（用于编辑角色权限）
        /// </summary>
        /// <param name="roleFunctionIds">角色已拥有的功能ID列表</param>
        public void LoadRolePermissions(List<int> roleFunctionIds)
        {
            if (roleFunctionIds == null || roleFunctionIds.Count == 0) return;

            foreach (var item in FunList)
            {
                bool isAll = true;
                foreach (var fuc in item.Children)
                {
                    if (roleFunctionIds.Contains(fuc.Id))
                    {
                        fuc.IsChecked = true;
                        //item.IsChecked = true;
                    }
                    else
                    {
                        isAll = false;
                    }
                }
                if(isAll)
                {
                    item.IsChecked = true;
                }
            }
        }


        public bool SavePermission()
        {
            // 获取选中的功能ID列表
            List<int> selectedIds = GetSelectedFunctionIds();

            if (selectedIds.Count == 0)
            {
                MessageBox.Show("请至少选择一个功能权限！", "提示");
                return false;
            }
            List<config_role_permisson> rolePermissonList = new List<config_role_permisson>();
            foreach (int item in selectedIds)
            {
                config_role_permisson rolePermisson = new config_role_permisson();
                rolePermisson.function_id = item;
                rolePermisson.role_id = configRole.id;
                rolePermissonList.Add(rolePermisson);
            }


            if (rolesBll.SavePermission(rolePermissonList) < 0)
            {
                MessageBox.Show("保存失败！");
                return false;
            }

           return true;
        }

      
        private List<int> GetSelectedFunctionIds()
        {
            List<int> selectedIds = new List<int>();

            foreach (var item in FunList)
            {
                foreach(var fuc in item.Children)
                {
                    if(fuc.IsChecked)
                    {
                        //添加父节点功能id
                        if(!selectedIds.Contains(item.Id))
                        {
                            selectedIds.Add(item.Id);
                        }
                     
                        selectedIds.Add(fuc.Id);
                    }
                }
            }


            return selectedIds;
        }


    }
}