2024-06-02 15:22:39 +03:00

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using ProjectBattleship.Exceptions;
using ProjectBattleship.DrawingObject;
using System.Text;
namespace ProjectBattleship.CollectionGenericObjects;
public class StorageCollection<T>
where T : DrawingWarship
{
/// <summary>
/// Словарь (хранилище) с коллекциями
/// </summary>
private Dictionary<CollectionInfo, ICollectionGenericObjects<T>> _storages;
/// <summary>
/// Возвращение списка названий коллекций
/// </summary>
public List<CollectionInfo> Keys => _storages.Keys.ToList();
/// <summary>
/// Ключевое слово, с которого должен начинаться файл
/// </summary>
private readonly string _collectionKey = "CollectionsStorage";
/// <summary>
/// Разделитель для записи ключа и значения элемента словаря
/// </summary>
private readonly string _separatorForKeyValue = "|";
/// <summary>
/// Разделитель для записей коллекции данных в файл
/// </summary>
private readonly string _separatorItems = ";";
/// <summary>
/// Конструктор
/// </summary>
public StorageCollection()
{
_storages = new Dictionary<CollectionInfo, ICollectionGenericObjects<T>>();
}
/// <summary>
/// Добавление коллекции в хранилище
/// </summary>
/// <param name="collectionInfo">тип коллекции</param>
public void AddCollection(CollectionInfo collectionInfo)
{
if (_storages.ContainsKey(collectionInfo)) throw new CollectionAlreadyExistsException(collectionInfo);
if (collectionInfo.CollectionType == CollectionType.None)
throw new CollectionTypeException("Пустой тип коллекции");
if (collectionInfo.CollectionType == CollectionType.Massive)
_storages[collectionInfo] = new MassiveGenericObjects<T>();
else if (collectionInfo.CollectionType == CollectionType.List)
_storages[collectionInfo] = new ListGenericObjects<T>();
}
/// <summary>
/// Удаление коллекции
/// </summary>
/// <param name="collectionInfo">тип коллекции</param>
public void DelCollection(CollectionInfo collectionInfo)
{
if (_storages.ContainsKey(collectionInfo))
_storages.Remove(collectionInfo);
}
/// <summary>
/// Доступ к коллекции
/// </summary>
/// <param name="collectionInfo"></param>
/// <returns></returns>
public ICollectionGenericObjects<T>? this[CollectionInfo collectionInfo]
{
get
{
if (_storages.ContainsKey(collectionInfo))
return _storages[collectionInfo];
return null;
}
}
/// <summary>
/// Сохранение информации по самолетам в файл
/// </summary>
/// <param name="filename"></param>
/// <exception cref="EmptyFileExeption"></exception>
public void SaveData(string filename)
{
if (_storages.Count == 0)
{
throw new EmptyFileException();
}
if (File.Exists(filename))
{
File.Delete(filename);
}
using (StreamWriter writer = new StreamWriter(filename))
{
writer.Write(_collectionKey);
foreach (KeyValuePair<CollectionInfo, ICollectionGenericObjects<T>> value in _storages)
{
StringBuilder sb = new();
sb.Append(Environment.NewLine);
if (value.Value.Count == 0)
{
continue;
}
sb.Append(value.Key);
sb.Append(_separatorForKeyValue);
sb.Append(value.Value.MaxCount);
sb.Append(_separatorForKeyValue);
foreach (T? item in value.Value.GetItems())
{
string data = item?.GetDataForSave() ?? string.Empty;
if (string.IsNullOrEmpty(data))
{
continue;
}
sb.Append(data);
sb.Append(_separatorItems);
}
writer.Write(sb);
}
}
}
/// <summary>
/// Загрузка информации по автомобилям в хранилище из файла
/// </summary>
/// <param name="filename">Путь и имя файла</param>
/// <returns>true - загрузка прошла успешно, false - ошибка при загрузке данных</returns>
public void LoadData(string filename)
{
if (!File.Exists(filename))
{
throw new Exceptions.FileNotFoundException(filename);
}
using (StreamReader fs = File.OpenText(filename))
{
string str = fs.ReadLine();
if (string.IsNullOrEmpty(str))
{
throw new EmptyFileException(filename);
}
if (!str.StartsWith(_collectionKey))
{
throw new Exceptions.FileFormatException(filename);
}
_storages.Clear();
string strs = "";
while ((strs = fs.ReadLine()) != null)
{
string[] record = strs.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
if (record.Length != 3)
{
continue;
}
CollectionInfo? collectionInfo =
CollectionInfo.GetCollectionInfo(record[0]) ??
throw new CollectionInfoException("Не удалось определить информацию коллекции:" + record[0]);
ICollectionGenericObjects<T>? collection =
StorageCollection<T>.CreateCollection(collectionInfo.CollectionType) ??
throw new CollectionTypeException("Не удалось определить тип коллекции:" + record[1]);
collection.MaxCount = Convert.ToInt32(record[1]);
string[] set = record[2].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
foreach (string elem in set)
{
if (elem?.CreateDrawingWarship() is T ship)
{
try
{
collection.Insert(ship);
}
catch (Exception ex)
{
throw new Exceptions.FileFormatException(filename, ex);
}
}
}
_storages.Add(collectionInfo, collection);
}
}
}
private static ICollectionGenericObjects<T>?
CreateCollection(CollectionType collectionType)
{
return collectionType switch
{
CollectionType.Massive => new MassiveGenericObjects<T>(),
CollectionType.List => new ListGenericObjects<T>(),
_ => null,
};
}
}