/*
 * Copyright (C) 2009-2010 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.android.fbreader;

import android.app.AlertDialog;
import android.app.SearchManager;
import android.content.Intent;
import android.os.Bundle;
import android.os.PowerManager;
import android.view.View;
import android.view.WindowManager;
import android.widget.RelativeLayout;
import android.widget.SeekBar;

import org.geometerplus.zlibrary.core.application.ZLApplication;
import org.geometerplus.zlibrary.core.view.ZLView;
import org.geometerplus.zlibrary.text.view.ZLTextView;
import org.geometerplus.zlibrary.ui.android.library.ZLAndroidActivity;
import org.geometerplus.zlibrary.ui.android.library.ZLAndroidApplication;
import org.geometerplus.zlibrary.ui.android.R;

import org.geometerplus.fbreader.fbreader.ActionCode;

public final class FBReader extends ZLAndroidActivity {
	static FBReader Instance;

	private int myFullScreenFlag;

	private static class TextSearchButtonPanel implements ZLApplication.ButtonPanel {
		boolean Visible;
		ControlPanel ControlPanel;

		public void hide() {
			Visible = false;
			if (ControlPanel != null) {
				ControlPanel.hide(false);
			}
		}

		public void updateStates() {
			if (ControlPanel != null) {
				ControlPanel.updateStates();
			}
		}
	}
	private static TextSearchButtonPanel myPanel;

	@Override
	public void onCreate(Bundle icicle) {
		super.onCreate(icicle);
		/*
		android.telephony.TelephonyManager tele =
			(android.telephony.TelephonyManager)getSystemService(TELEPHONY_SERVICE);
		System.err.println(tele.getNetworkOperator());
		*/
		Instance = this;
		final ZLAndroidApplication application = ZLAndroidApplication.Instance();
		myFullScreenFlag =
			application.ShowStatusBarOption.getValue() ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
		getWindow().setFlags(
			WindowManager.LayoutParams.FLAG_FULLSCREEN, myFullScreenFlag
		);
		if (myPanel == null) {
			myPanel = new TextSearchButtonPanel();
			ZLApplication.Instance().registerButtonPanel(myPanel);
		}
	}

	@Override
	public void onStart() {
		super.onStart();
		final ZLAndroidApplication application = ZLAndroidApplication.Instance();

		final int fullScreenFlag =
			application.ShowStatusBarOption.getValue() ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
		if (fullScreenFlag != myFullScreenFlag) {
			finish();
			startActivity(new Intent(this, this.getClass()));
		}

		if (myPanel.ControlPanel == null) {
			myPanel.ControlPanel = new ControlPanel(this);

			myPanel.ControlPanel.addButton(ActionCode.FIND_PREVIOUS, false, R.drawable.text_search_previous);
			myPanel.ControlPanel.addButton(ActionCode.CLEAR_FIND_RESULTS, true, R.drawable.text_search_close);
			myPanel.ControlPanel.addButton(ActionCode.FIND_NEXT, false, R.drawable.text_search_next);

			RelativeLayout root = (RelativeLayout)findViewById(R.id.root_view);
			RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(
				RelativeLayout.LayoutParams.WRAP_CONTENT,
				RelativeLayout.LayoutParams.WRAP_CONTENT);
			p.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
			p.addRule(RelativeLayout.CENTER_HORIZONTAL);
			root.addView(myPanel.ControlPanel, p);
		}
	}

	private PowerManager.WakeLock myWakeLock;

	@Override
	public void onResume() {
		super.onResume();
		if (myPanel.ControlPanel != null) {
			myPanel.ControlPanel.setVisibility(myPanel.Visible ? View.VISIBLE : View.GONE);
		}
		if (ZLAndroidApplication.Instance().DontTurnScreenOffOption.getValue()) {
			myWakeLock =
				((PowerManager)getSystemService(POWER_SERVICE)).
					newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "FBReader");
			myWakeLock.acquire();
		} else {
			myWakeLock = null;
		}
	}

	@Override
	public void onPause() {
		if (myWakeLock != null) {
			myWakeLock.release();
		}
		if (myPanel.ControlPanel != null) {
			myPanel.Visible = myPanel.ControlPanel.getVisibility() == View.VISIBLE;
		}
		super.onPause();
	}

	@Override
	public void onStop() {
		if (myPanel.ControlPanel != null) {
			myPanel.ControlPanel.hide(false);
			myPanel.ControlPanel = null;
		}
		super.onStop();
	}

	void showTextSearchControls(boolean show) {
		if (myPanel.ControlPanel != null) {
			if (show) {
				myPanel.ControlPanel.show(true);
			} else {
				myPanel.ControlPanel.hide(false);
			}
		}
	}

	protected ZLApplication createApplication(String fileName) {
		new SQLiteBooksDatabase();
		String[] args = (fileName != null) ? new String[] { fileName } : new String[0];
		return new org.geometerplus.fbreader.fbreader.FBReader(args);
	}

	@Override
	public boolean onSearchRequested() {
		if (myPanel.ControlPanel != null) {
			final boolean visible = myPanel.ControlPanel.getVisibility() == View.VISIBLE;
			myPanel.ControlPanel.hide(false);
			SearchManager manager = (SearchManager)getSystemService(SEARCH_SERVICE);
			manager.setOnCancelListener(new SearchManager.OnCancelListener() {
				public void onCancel() {
					if ((myPanel.ControlPanel != null) && visible) {
						myPanel.ControlPanel.show(false);
					}
				}
			});
		}
		final org.geometerplus.fbreader.fbreader.FBReader fbreader =
			(org.geometerplus.fbreader.fbreader.FBReader)ZLApplication.Instance();
		startSearch(fbreader.TextSearchPatternOption.getValue(), true, null, false);
		return true;
	}


	private AlertDialog myNavigateDialog;

	public void navigate() {
		if (myNavigateDialog == null) {
			setupNavigation();
		}
		myNavigateDialog.show();
		updateNavigation();
	}

	public boolean canNavigate() {
		final org.geometerplus.fbreader.fbreader.FBReader fbreader =
			(org.geometerplus.fbreader.fbreader.FBReader)ZLApplication.Instance();
		final ZLView view = fbreader.getCurrentView();
		return view instanceof ZLTextView
				&& ((ZLTextView) view).getModel() != null
				&& ((ZLTextView) view).getModel().getParagraphsNumber() != 0;
	}

	private void setupNavigation() {
		final View layout = getLayoutInflater().inflate(R.layout.navigate, null);
		final SeekBar slider = (SeekBar) layout.findViewById(R.id.book_position_slider);

		slider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
			private boolean myInTouch;

			private void gotoPage(int page) {
				final ZLView view = ZLApplication.Instance().getCurrentView();
				if (view instanceof ZLTextView) {
					ZLTextView textView = (ZLTextView) view;
					textView.gotoPage(page);
					ZLApplication.Instance().repaintView();
				}
			}

			public void onStopTrackingTouch(SeekBar seekBar) {
				gotoPage(seekBar.getProgress() + 1);
				myInTouch = false;
			}
			
			public void onStartTrackingTouch(SeekBar seekBar) {
				myInTouch = true;
			}
			
			public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
				if (fromUser) {
					final int page = progress + 1;
					final int pagesNumber = seekBar.getMax() + 1; 
					myNavigateDialog.setTitle(makeNavigationTitle(page, pagesNumber));
					if (!myInTouch) {
						gotoPage(page);
					}
				}
			}
		});

		myNavigateDialog = new AlertDialog.Builder(this)
			.setView(layout)
			.setTitle("?????") // use Non-empty string to preserve title-bar
			.setIcon(0)
			.create();
	}

	private void updateNavigation() {
		final org.geometerplus.fbreader.fbreader.FBReader fbreader =
			(org.geometerplus.fbreader.fbreader.FBReader)ZLApplication.Instance();
		final ZLTextView textView = (ZLTextView) fbreader.getCurrentView();
		final int page = textView.computeCurrentPage();
		final int pagesNumber = textView.computePageNumber();
	
		final SeekBar slider = (SeekBar) myNavigateDialog.findViewById(R.id.book_position_slider);
		slider.setMax(pagesNumber - 1);
		slider.setProgress(page - 1);

		myNavigateDialog.setTitle(makeNavigationTitle(page, pagesNumber));
	}

	private static String makeNavigationTitle(int page, int pagesNumber) {
		final org.geometerplus.fbreader.fbreader.FBReader fbreader =
			(org.geometerplus.fbreader.fbreader.FBReader)ZLApplication.Instance();
		String title = "";
		if (fbreader.Model != null && fbreader.Model.Book != null) {
			title = fbreader.Model.Book.getTitle();
		}
		return title + ": " + page + " / " + pagesNumber;
	}
}