StudentManager/StudentManager/Data/StudentInfo.cs

using StudentManager.Common;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection.Metadata.Ecma335;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

namespace StudentManager.Data
{
	public static class StudentLib
	{
		public static string LibPath = $"{Environment.GetFolderPath(Environment.SpecialFolder.Desktop)}\\FileLib\\";
		public static string FileName = "studentLib.dbsi";
		public static Dictionary<int, StudentInfo> StudentDic { get; set; } = new Dictionary<int, StudentInfo>();

		public static void Add(StudentInfo studentInfo)
		{
			StudentDic.Add(studentInfo.UID, studentInfo);
		}


		public static void Load()
		{
			StudentDic.Clear();

			Debug.Assert(Path.Exists(LibPath));
			string file = File.ReadAllText(LibPath + FileName);
			StudentDic = JsonSerializer.Deserialize<Dictionary<int, StudentInfo>>(file);
		}

		public static void Save()
		{
			Directory.CreateDirectory(Path.GetFullPath(LibPath));
			File.WriteAllText((LibPath + FileName), JsonSerializer.Serialize(StudentDic));
		}

		public static void FreshAllStudentInfo()
		{
			StudentDic.Clear();

			SQLHelper.Query<StudentData>(Tables.UserTable).ForEach(x =>
			StudentDic.Add(x.UID, new StudentInfo
			{
				UID = x.UID,
				Name = x.Name,
				Address = x.Address,
				Contact = x.Contact,
				Grade = x.Grade,
				CurrentHomeWorkIndex = x.HomeWork,
			}));

            foreach (var item in StudentDic)
            {
				GetStudentDetailInfo(item.Value);
			}
        }

		public static ObservableCollection<StudentInfo> GetAllStudents()
		{
			var list = new ObservableCollection<StudentInfo>();
			foreach (var item in StudentDic)
			{
				list.Add(item.Value);
			}
			return list;
		}

		public static StudentInfo QueryStudentDetailInfo(int uid)
		{
			return GetStudentDetailInfo(Get(uid));
		}

		public static StudentInfo Get(int uid)
		{
			if (!StudentDic.ContainsKey(uid)) return null;
			return StudentDic[uid];
		}

		public static void Remove(StudentInfo studentInfo)
		{
			StudentDic.Remove(studentInfo.UID);
		}

		public static void Remove(int id)
		{
			StudentDic.Remove(id);
		}

		public static StudentInfo GetStudentDetailInfo(StudentInfo studentData)
		{
			studentData.ErrorSet.QueryErrorSet(studentData.UID);
			studentData.HomeWorkSet.FreshAllHomeWork(studentData.UID);
			studentData.CurentHomeWork = studentData.HomeWorkSet.Get(studentData.CurrentHomeWorkIndex);
			return studentData;
		}

		public static void GetStudentDetailInfo(ref StudentInfo studentData)
		{
			studentData.ErrorSet.QueryErrorSet(studentData.UID);
			studentData.HomeWorkSet.FreshAllHomeWork(studentData.UID);
		}
	}

	public class StudentInfo
	{
		public int UID { get; set; } = 1;
		public string Name { get; set; } = "Name";
		public string Gender { get; set; } = "Gender";
		public string Contact { get; set; } = "Contact";
		public string Address { get; set; } = "Address";
		public int Grade { get; set; } = 1;
		public int HomeWorkCount { get; set; } = 0;


		public ErrorSet ErrorSet { get; set; } = new ErrorSet();
		public HomeWorkSet HomeWorkSet { get; set; } = new HomeWorkSet();

		public int CurrentHomeWorkIndex = 0;
		public HomeWork CurentHomeWork { get; set; } = new HomeWork();

		public void PublicHomeWork(HomeWork homeWork)
		{
			HomeWorkSet.AddHomeWork(homeWork);
		}
	}
}