import java.lang.String;

// TODO: use java.nio? http://tutorials.jenkov.com/java-nio/nio-vs-io.html
import java.io.File;
import java.io.PrintWriter;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;

import java.awt.Dimension;

import com.google.gson.Gson;

// TODO: this class loads AND saves classes, refractor name
class MapLoader {
	File path;

	public MapLoader(Object path) {
		if (path instanceof java.io.File) {
			this.path = (File) path;
		} else {
			this.path = new File((String) path);
		}
	}

	public Map getMap() {
		String mapText = "";
		String line = null;
		FileReader fr = null;
		BufferedReader bf = null;

		try {
			fr = new FileReader(this.path);
			bf = new BufferedReader(fr);
			// TODO: read all at once
			while ((line = bf.readLine()) != null) {
				mapText = mapText + line;	
			}
			bf.close();
		} catch (IOException ex) {
			ex.printStackTrace();
		}

		Gson gson = new Gson();
		Map importMap = gson.fromJson(mapText, Map.class);

		// TODO: ask @mafaldo why is there a copy?
		// update map with new classes
		// Map map = new Map(new Dimension(importMap.getSize(), importMap.getSize()));
		// map.update(importMap.getActors(), importMap.getGrid());
		// return map;

		return importMap;
	}

	public void saveMap(Map map) {
		Gson gson = new Gson();
		String mapText = gson.toJson(map);
		PrintWriter out = null;
		try {
			out = new PrintWriter(this.path + ".json");
		} catch (FileNotFoundException ex) {
			ex.printStackTrace();
		}
		out.println(mapText);
		out.close();
	}
}