using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Data;
using System.IO;
using HMI.Core.Util;
using HMI.MenuManage.Entity;
using HMI.MenuManage.Util;
using HMI.Core.Entity;

namespace HMI.MenuManage.Model
{
    public class UserManageModel : NotifyBase
    {
        public SqliteHelper sqliteHelper;

        private ObservableCollection<UserData> _DataSource;

        public ObservableCollection<UserData> DataSource
        {
            get { return _DataSource; }
            set { Set(ref _DataSource, value); }
        }
        private UserData _SelectedUser;

        public UserData SelectedUser
        {
            get { return _SelectedUser; }
            set
            {
                Set(ref _SelectedUser, value);
                LoadUserRole();
            }
        }

        private ObservableCollection<UserRoleRel> _Roles;
        public ObservableCollection<UserRoleRel> Roles
        {
            get => _Roles;
            set { Set(ref _Roles, value); }
        }

        public UserManageModel()
        {
            if (!File.Exists(PathHelper.DatabasePath))
            {
                SqliteHelper.CreateDatabase(PathHelper.DatabasePath);
            }
            sqliteHelper = new SqliteHelper(PathHelper.DatabasePath);
            sqliteHelper.ExecuteSql(@"CREATE TABLE IF NOT EXISTS user (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    username TEXT NOT NULL,
                    password TEXT NOT NULL,
                    name TEXT,
                    UNIQUE(username)
                    );
CREATE TABLE IF NOT EXISTS user_role_rel (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    username TEXT NOT NULL,
                    roleCode TEXT NOT NULL,
                    UNIQUE(username,roleCode)
                    );
");
        }

        public void LoadData()
        {
            ObservableCollection<UserData> data = new ObservableCollection<UserData>();
            DataTable dt = sqliteHelper.GetDataTable("SELECT * FROM user Order By id;");
            if (dt != null)
            {
                foreach (DataRow dr in dt.Rows)
                {
                    var menu = new UserData
                    {
                        Id = dr["id"].ToString(),
                        Username = dr["username"].ToString(),
                        Password = dr["password"].ToString(),
                        Name = dr["name"].ToString()
                    };
                    data.Add(menu);
                }
            }
            DataSource = data;
        }

        public void LoadUserRole()
        {
            Roles = SelectedUser == null ? new ObservableCollection<UserRoleRel>()
                : UserRoleRelHelper.SelectUserRoleData(sqliteHelper, SelectedUser.Username);
        }

        public void SaveUserRole()
        {
            UserRoleRelHelper.SaveUserRoleRel(sqliteHelper, Roles, SelectedUser, null, null);
        }
    }
}