228 lines
7.9 KiB
C#
228 lines
7.9 KiB
C#
using System.Text;
|
||
using ProjectAirplaneWithRadar.Drawnings;
|
||
|
||
namespace ProjectAirplaneWithRadar.CollectionGenericObjects
|
||
{
|
||
/// <summary>
|
||
/// Класс-хранилище коллекций
|
||
/// </summary>
|
||
/// <typeparam name="T"></typeparam>
|
||
public class StorageCollection<T>
|
||
where T : DrawningAirplane
|
||
{
|
||
/// <summary>
|
||
/// Словарь (хранилище) с коллекциями
|
||
/// </summary>
|
||
readonly Dictionary<string, ICollectionGenericObjects<T>> _storages;
|
||
|
||
/// <summary>
|
||
/// Возвращение списка названий коллекций
|
||
/// </summary>
|
||
public List<string> 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<string, ICollectionGenericObjects<T>>();
|
||
}
|
||
|
||
/// <summary>
|
||
/// Добавление коллекции в хранилище
|
||
/// </summary>
|
||
/// <param name="name">Название коллекции</param>
|
||
/// <param name="collectionType">тип коллекции</param>
|
||
public void AddCollection(string name, CollectionType collectionType)
|
||
{
|
||
if (name == null || _storages.ContainsKey(name))
|
||
return;
|
||
|
||
switch (collectionType)
|
||
{
|
||
case CollectionType.None:
|
||
return;
|
||
case CollectionType.Massive:
|
||
_storages[name] = new MassiveGenericObjects<T>();
|
||
return;
|
||
case CollectionType.List:
|
||
_storages[name] = new ListGenericObjects<T>();
|
||
return;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// Удаление коллекции
|
||
/// </summary>
|
||
/// <param name="name">Название коллекции</param>
|
||
public void DelCollection(string name)
|
||
{
|
||
if(_storages.ContainsKey(name))
|
||
_storages.Remove(name);
|
||
}
|
||
|
||
/// <summary>
|
||
/// Доступ к коллекции
|
||
/// </summary>
|
||
/// <param name="name">Название коллекции</param>
|
||
/// <returns></returns>
|
||
public ICollectionGenericObjects<T>? this[string name]
|
||
{
|
||
get
|
||
{
|
||
if (name == null || !_storages.ContainsKey(name))
|
||
return null;
|
||
|
||
return _storages[name];
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// Сохранение информации по самолетам в хранилище в файл
|
||
/// </summary>
|
||
/// <param name="filename">Путь и имя файла</param>
|
||
/// <returns>true - сохранение прошло успешно, false - ошибка при сохранении данных</returns>
|
||
public bool SaveData(string filename)
|
||
{
|
||
if(_storages.Count == 0)
|
||
return false;
|
||
|
||
if(File.Exists(filename))
|
||
File.Delete(filename);
|
||
|
||
StringBuilder sb = new();
|
||
|
||
sb.Append(_collectionKey);
|
||
foreach(KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
|
||
{
|
||
sb.Append(Environment.NewLine);
|
||
|
||
if (value.Value.Count == 0)
|
||
continue;
|
||
|
||
sb.Append(value.Key);
|
||
sb.Append(_separatorForKeyValue);
|
||
sb.Append(value.Value.GetCollectionType);
|
||
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);
|
||
}
|
||
}
|
||
|
||
using FileStream fs = new(filename, FileMode.Create);
|
||
byte[] info = new UTF8Encoding(true).GetBytes(sb.ToString());
|
||
fs.Write(info, 0, info.Length);
|
||
return true;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Загрузка информации по самолетам 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 bool LoadData(string filename)
|
||
{
|
||
if (!File.Exists(filename))
|
||
{
|
||
return false;
|
||
}
|
||
|
||
string bufferTextFromFile = "";
|
||
using (FileStream fs = new(filename, FileMode.Open))
|
||
{
|
||
byte[] b = new byte[fs.Length];
|
||
UTF8Encoding temp = new(true);
|
||
while (fs.Read(b, 0, b.Length) > 0)
|
||
{
|
||
bufferTextFromFile += temp.GetString(b);
|
||
}
|
||
}
|
||
|
||
string[] strs = bufferTextFromFile.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
|
||
if (strs == null || strs.Length == 0)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
if (!strs[0].Equals(_collectionKey))
|
||
{
|
||
return false;
|
||
}
|
||
|
||
_storages.Clear();
|
||
foreach (string data in strs)
|
||
{
|
||
string[] record = data.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
|
||
if (record.Length != 4)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
|
||
ICollectionGenericObjects<T>? collection = StorageCollection<T>.CreateCollection(collectionType);
|
||
if (collection == null)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
collection.MaxCount = Convert.ToInt32(record[2]);
|
||
|
||
string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
|
||
foreach (string elem in set)
|
||
{
|
||
if (elem?.CreateDrawningAirplane() is T airplane)
|
||
{
|
||
if (collection.Insert(airplane) == -1)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
_storages.Add(record[0], collection);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Создание коллекции по типу
|
||
/// </summary>
|
||
/// <param name="collectionType"></param>
|
||
/// <returns></returns>
|
||
private static ICollectionGenericObjects<T>? CreateCollection(CollectionType collectionType)
|
||
{
|
||
return collectionType switch
|
||
{
|
||
CollectionType.Massive => new MassiveGenericObjects<T>(),
|
||
CollectionType.List => new ListGenericObjects<T>(),
|
||
_ => null,
|
||
};
|
||
}
|
||
}
|
||
}
|