import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.ListIterator;

public class MapsCollection
{
    public LinkedHashMap<String, MapWithSetAircraftsGeneric<DrawingObjectAircraft, AbstractMap>> _mapStorages;
    private int _pictureWidth;
    private int _pictureHeight;

    private char separatorDict = '|';
    private char separatorData = ';';

    public List<String> getKeys() { return _mapStorages.keySet().stream().toList(); }

    public MapsCollection(int pictureWidth, int pictureHeight)
    {
        _mapStorages = new LinkedHashMap<>();
        _pictureWidth = pictureWidth;
        _pictureHeight = pictureHeight;
    }

    public boolean SaveData(String filename)
    {
        File file = new File(filename);
        if (file.exists()) file.delete();

        try {
            file.createNewFile();

            FileWriter writer = new FileWriter(file);
            writer.append("MapsCollection\n");

            for(String key : _mapStorages.keySet()) {
                String record = key + separatorDict + _mapStorages.get(key).GetData(separatorDict, separatorData) + "\n";
                writer.append(record);
            }

            writer.flush();
            writer.close();
        } catch(Exception err) {
            return false;
        }

        return true;
    }

    public boolean LoadData(String filename)
    {
        File file = new File(filename);
        if (!file.exists()) return false;

        try {
            BufferedReader reader = new BufferedReader(new FileReader(file));
            String current = reader.readLine();

            if (!current.equals("MapsCollection")) return false;
            _mapStorages.clear();

            while ((current = reader.readLine()) != null)
            {
                String elem[] = current.split("\\" + separatorDict);
                AbstractMap map = null;
                switch (elem[1])
                {
                    case "SimpleMap":
                        map = new SimpleMap();
                        break;
                    case "MyMap":
                        map = new MyMap();
                        break;
                }
                _mapStorages.put(elem[0], new MapWithSetAircraftsGeneric<DrawingObjectAircraft, AbstractMap>(_pictureWidth, _pictureHeight, map));
                _mapStorages.get(elem[0]).LoadData(elem[2].split(separatorData + ""));
            }

            reader.close();
        } catch(Exception err) {
            return false;
        }

        return true;
    }


    public boolean SaveMap(String filename, String key) {
        File file = new File(filename);
        if(file.exists()) file.delete();

        MapWithSetAircraftsGeneric<DrawingObjectAircraft, AbstractMap> item = _mapStorages.getOrDefault(key, null);
        if(item == null) return false;

        try {
            file.createNewFile();
            FileWriter writer = new FileWriter(file);

            writer.append("Map\n");
            writer.append(key + "\n");
            writer.append(item.getMap().getClass().getName() + "\n");
            ListIterator<DrawingObjectAircraft> iter = item.getAircraftsIter();
            while(iter.hasNext()) {
                writer.append(AircraftFactory.getDataForSave(iter.next().getAircraft()) + "\n");
            }

            writer.flush();
            writer.close();
        } catch(Exception err) {
            return false;
        }

        return true;
    }

    public boolean LoadMap(String filename) {
        File file = new File(filename);
        if (!file.exists()) return false;

        try {
            BufferedReader reader = new BufferedReader(new FileReader(file));
            String format = reader.readLine();
            if (!format.equals("Map")) return false;

            String key = reader.readLine();
            String mapStr = reader.readLine();

            AbstractMap map = null;

            switch (mapStr)
            {
                case "SimpleMap":
                    map = new SimpleMap();
                    break;
                case "MyMap":
                    map = new MyMap();
                    break;
            }

            if(_mapStorages.containsKey(key)) _mapStorages.get(key).ClearMap();
            else _mapStorages.put(key, new MapWithSetAircraftsGeneric<>(_pictureWidth, _pictureHeight, map));

            String current = null;
            while ((current = reader.readLine()) != null)
            {
                _mapStorages.get(key).addAircraft(DrawingObjectAircraft.Create(current));
            }
            reader.close();
        } catch(Exception err) {
            return false;
        }

        return true;
    }

    public void AddMap(String name, AbstractMap map)
    {
        // TODO Прописать логику для добавления
        boolean check = _mapStorages.containsKey(name);
        if (check) return;

        _mapStorages.put(name, new MapWithSetAircraftsGeneric(_pictureWidth, _pictureHeight, map));
    }

    public void DelMap(String name)
    {
        // TODO Прописать логику для удаления
        _mapStorages.remove(name);
    }

    public MapWithSetAircraftsGeneric<DrawingObjectAircraft, AbstractMap> getMap(String name)
    {
        return _mapStorages.getOrDefault(name, null);
    }
}