package org.hedgewars.hedgeroid;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.Collections;

import java.util.List;

import org.hedgewars.hedgeroid.R;

import org.hedgewars.hedgeroid.Datastructures.FrontendDataUtils;

import org.hedgewars.hedgeroid.Datastructures.MapRecipe;

import org.hedgewars.hedgeroid.Datastructures.Scheme;

import org.hedgewars.hedgeroid.Datastructures.Schemes;

import org.hedgewars.hedgeroid.Datastructures.Weaponset;

import org.hedgewars.hedgeroid.Datastructures.Weaponsets;

import org.hedgewars.hedgeroid.util.FileUtils;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.Spinner;

import android.widget.Toast;

public class SettingsFragment extends Fragment implements RoomStateManager.Observer {

	private static final String TAG = SettingsFragment.class.getSimpleName();

	private Spinner styleSpinner, schemeSpinner, weaponsetSpinner, themeSpinner;

	private ImageView themeIcon;

	private List<String> styles;

	private List<Scheme> schemes;

	private List<Weaponset> weaponsets;

	private List<String> themes;

	private RoomStateManager stateManager;

	@Override

	public View onCreateView(LayoutInflater inflater, ViewGroup container,

			Bundle savedInstanceState) {

		View v = inflater.inflate(R.layout.fragment_settings, container, false);

		themeIcon = (ImageView)v.findViewById(R.id.imgTheme);

		try {

			styles = FrontendDataUtils.getGameStyles(getActivity());

			schemes = Schemes.loadAllSchemes(getActivity());

			weaponsets = Weaponsets.loadAllWeaponsets(getActivity());

			themes = FrontendDataUtils.getThemes(getActivity());

		} catch (IOException e) {

			Toast.makeText(getActivity().getApplicationContext(), R.string.error_missing_sdcard_or_files, Toast.LENGTH_LONG).show();

			getActivity().finish();

			return null;

		}

		Collections.sort(styles, String.CASE_INSENSITIVE_ORDER);

		Collections.sort(schemes, Scheme.NAME_ORDER);

		Collections.sort(weaponsets, Weaponset.NAME_ORDER);

		Collections.sort(themes, String.CASE_INSENSITIVE_ORDER);

		styleSpinner = prepareSpinner(v, R.id.spinGameplay, styles, styleSelectedListener);

		schemeSpinner = prepareSpinner(v, R.id.spinGamescheme, Schemes.toNameList(schemes), schemeSelectedListener);

		weaponsetSpinner = prepareSpinner(v, R.id.spinweapons, Weaponsets.toNameList(weaponsets), weaponsetSelectedListener);

		themeSpinner = prepareSpinner(v, R.id.spinTheme, themes, themeSelectedListener);

		stateManager.registerObserver(this);

		if(stateManager.getGameStyle() != null) {

			styleSpinner.setSelection(styles.indexOf(stateManager.getGameStyle()), false);

		}

		if(stateManager.getScheme() != null) {

			schemeSpinner.setSelection(getSchemePosition(schemes, stateManager.getScheme().name), false);

		}

		if(stateManager.getWeaponset() != null) {

			weaponsetSpinner.setSelection(getWeaponsetPosition(weaponsets, stateManager.getWeaponset().name), false);

		}

		if(stateManager.getMapRecipe() != null) {

			themeSpinner.setSelection(themes.indexOf(stateManager.getMapRecipe().theme), false);

		}

		setChiefState(stateManager.getChiefStatus());

		return v;

	}

	private static Spinner prepareSpinner(View v, int id, List<String> items, OnItemSelectedListener itemSelectedListener) {

		Spinner spinner = (Spinner)v.findViewById(id);

		ArrayAdapter<String> adapter = new ArrayAdapter<String>(v.getContext(), R.layout.listview_item, items);

		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

		spinner.setAdapter(adapter);

		spinner.setOnItemSelectedListener(itemSelectedListener);

		return spinner;

	}

	@Override

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		try {

			stateManager = ((RoomStateManager.Provider)getActivity()).getRoomStateManager();

		} catch(ClassCastException e) {

			throw new RuntimeException("Hosting activity must implement RoomStateManager.Provider.", e);

		}

	}

	@Override

	public void onDestroy() {

		super.onDestroy();

		stateManager.unregisterObserver(this);

	}

	private static int getSchemePosition(List<Scheme> schemes, String scheme) {

		for(int i=0; i<schemes.size(); i++) {

			if(schemes.get(i).name.equals(scheme)) {

				return i;

			}

		}

		return -1;

	}

	private static int getWeaponsetPosition(List<Weaponset> weaponsets, String weaponset) {

		for(int i=0; i<weaponsets.size(); i++) {

			if(weaponsets.get(i).name.equals(weaponset)) {

				return i;

			}

		}

		return -1;

	}

	private void setChiefState(boolean chiefState) {

		styleSpinner.setEnabled(chiefState);

		schemeSpinner.setEnabled(chiefState);

		weaponsetSpinner.setEnabled(chiefState);

		themeSpinner.setEnabled(chiefState);

		if(chiefState) {

			stateManager.changeGameStyle(styles.get(styleSpinner.getSelectedItemPosition()));

			stateManager.changeScheme(schemes.get(schemeSpinner.getSelectedItemPosition()));

			stateManager.changeWeaponset(weaponsets.get(weaponsetSpinner.getSelectedItemPosition()));

			stateManager.changeMapTheme(themes.get(themeSpinner.getSelectedItemPosition()));

		}

	}

	private final OnItemSelectedListener styleSelectedListener = new OnItemSelectedListener() {

		public void onItemSelected(AdapterView<?> adapter, View v, int position, long arg3) {

			stateManager.changeGameStyle(styles.get(position));

		}

		public void onNothingSelected(AdapterView<?> arg0) {}

	};

	private final OnItemSelectedListener schemeSelectedListener = new OnItemSelectedListener() {

		public void onItemSelected(AdapterView<?> adapter, View v, int position, long arg3) {

			stateManager.changeScheme(schemes.get(position));

		}

		public void onNothingSelected(AdapterView<?> arg0) {}

	};

	private final OnItemSelectedListener weaponsetSelectedListener = new OnItemSelectedListener() {

		public void onItemSelected(AdapterView<?> adapter, View v, int position, long arg3) {

			stateManager.changeWeaponset(weaponsets.get(position));

		}

		public void onNothingSelected(AdapterView<?> arg0) {}

	};

	private final OnItemSelectedListener themeSelectedListener = new OnItemSelectedListener() {

		public void onItemSelected(AdapterView<?> adapter, View v, int position, long arg3) {

			stateManager.changeMapTheme(themes.get(position));

			String theme = themes.get(position);

			try {

				File iconFile = new File(FileUtils.getDataPathFile(getActivity()), "Themes/" + theme + "/icon@2X.png");

				Drawable themeIconDrawable = Drawable.createFromPath(iconFile.getAbsolutePath());

				themeIcon.setImageDrawable(themeIconDrawable);

			} catch (FileNotFoundException e) {

				Log.e("SettingsFragment", "Unable to find preview for theme "+theme, e);

			}

		};

		public void onNothingSelected(AdapterView<?> arg0) {};

	};

	public void onChiefStatusChanged(boolean isChief) {

		setChiefState(isChief);

	}

	public void onGameStyleChanged(String gameStyle) {

		styleSpinner.setSelection(styles.indexOf(gameStyle));

	}

	public void onMapChanged(MapRecipe recipe) {

		themeSpinner.setSelection(themes.indexOf(recipe.theme));

	}

	public void onSchemeChanged(Scheme scheme) {

		schemeSpinner.setSelection(getSchemePosition(schemes, scheme.name));

	}

	public void onWeaponsetChanged(Weaponset weaponset) {

		weaponsetSpinner.setSelection(getWeaponsetPosition(weaponsets, weaponset.name));

	}

}