ISEbd-22_Baygulov_A.A._ElectricLocomotive_Base/ElectricLocomotive/ElectricLocomotive/LocomotivesGenericStorage.cs

using ProjectElectricLocomotive.DrawingObjects;
using ProjectElectricLocomotive.MovementStrategy;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProjectElectricLocomotive.Generics
{
    internal class LocomotivesGenericStorage
    {
        readonly Dictionary<string, LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive>> _locomotivesStorage;
        public List<string> Keys => _locomotivesStorage.Keys.ToList();
        private static readonly char _separatorForKeyValue = '|';
        private readonly char _separatorRecords = ';';
        private static readonly char _separatorForObject = ':';


        private readonly int _pictureWidth;
        private readonly int _pictureHeight;

        public LocomotivesGenericStorage(int pictureWidth, int pictureHeight)
        {
            _locomotivesStorage = new Dictionary<string, LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive>>();
            _pictureWidth = pictureWidth;
            _pictureHeight = pictureHeight;
        }
        public void AddSet(string name)
        {
            if (!_locomotivesStorage.ContainsKey(name))
            {
                _locomotivesStorage.Add(name, new LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive>(_pictureWidth, _pictureHeight));
            }
        }
        public void DelSet(string name)
        {
            if (_locomotivesStorage.ContainsKey(name))
            {
                _locomotivesStorage.Remove(name);
            }
        }
        public LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive>?
        this[string ind]
        {
            get
            {
                if (_locomotivesStorage.ContainsKey(ind))
                {
                    return _locomotivesStorage[ind];
                }
                return null;
            }
        }
        public void SaveData(string filename)
        {
            if (File.Exists(filename))
            {
                File.Delete(filename);
            }
            StringBuilder data = new();
            foreach (KeyValuePair<string, LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive>> record in _locomotivesStorage)
            {
                StringBuilder records = new();
                foreach (DrawingLocomotive? elem in record.Value.GetLocomotives)
                {
                    records.Append($"{elem?.GetDataForSave(_separatorForObject)}{_separatorRecords}");
                }
                data.AppendLine($"{record.Key}{_separatorForKeyValue}{records}");
            }
            if (data.Length == 0)
            {
                throw new Exception("Нет данных для записи, ошибка");
            }
            using StreamWriter fs = new StreamWriter(filename);
            {
                fs.WriteLine($"LocomotiveStorage{Environment.NewLine}");
                fs.WriteLine(data);
            }
            return;
        }
        public void LoadData(string filename)
        {
            if (!File.Exists(filename))
            {
                throw new FileNotFoundException("Файл не найден");
            }

            using (StreamReader fs = File.OpenText(filename))
            {

                string str = fs.ReadLine();

                if (str == null || str.Length == 0)
                {
                    throw new IOException("Нет данных для загрузки");
                }

                if (!str.StartsWith("LocomotiveStorage"))
                {
                    //если нет такой записи, то это не те данные
                    throw new FileFormatException("Неверный формат данных");
                }

                _locomotivesStorage.Clear();
                string strs = "";


                while ((strs = fs.ReadLine()) != null)
                {

                    if (strs == null)
                    {
                        throw new FileNotFoundException("Нет данных для загрузки");
                    }

                    string[] record = strs.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
                    if (record.Length != 2)
                    {
                        continue;
                    }
                    LocomotivesGenericCollection<DrawingLocomotive, DrawingObjectLocomotive> collection = new(_pictureWidth, _pictureHeight);
                    string[] set = record[1].Split(_separatorRecords, StringSplitOptions.RemoveEmptyEntries);
                    foreach (string elem in set)
                    {
                        DrawingLocomotive? loco = elem?.CreateDrawningLocomotive(_separatorForObject, _pictureWidth, _pictureHeight);
                        if (loco != null)
                        {
                            if ((collection + loco) == -1) // for my realization it's -1, for eegov's realization it's boolean
                            {
                                throw new Exception("Ошибка добавления ");
                            }
                        }
                    }
                    _locomotivesStorage.Add(record[0], collection);
                }
                return;
            }
        }
    }
}