/*
 * Copyright 2011-2014 the original author or authors.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.ui;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentManager;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;
import de.schildbach.wallet.AddressBookProvider;
import de.schildbach.wallet.Constants;
import de.schildbach.wallet.util.WalletUtils;
import de.schildbach.wallet_test.R;

/**
 * @author Andreas Schildbach
 */
public final class EditAddressBookEntryFragment extends DialogFragment
{
	private static final String FRAGMENT_TAG = EditAddressBookEntryFragment.class.getName();

	private static final String KEY_ADDRESS = "address";
	private static final String KEY_SUGGESTED_ADDRESS_LABEL = "suggested_address_label";

	public static void edit(final FragmentManager fm, @Nonnull final String address)
	{
		edit(fm, address, null);
	}

	public static void edit(final FragmentManager fm, @Nonnull final String address, @Nullable final String suggestedAddressLabel)
	{
		final DialogFragment newFragment = EditAddressBookEntryFragment.instance(address, suggestedAddressLabel);
		newFragment.show(fm, FRAGMENT_TAG);
	}

	private static EditAddressBookEntryFragment instance(@Nonnull final String address, @Nullable final String suggestedAddressLabel)
	{
		final EditAddressBookEntryFragment fragment = new EditAddressBookEntryFragment();

		final Bundle args = new Bundle();
		args.putString(KEY_ADDRESS, address);
		args.putString(KEY_SUGGESTED_ADDRESS_LABEL, suggestedAddressLabel);
		fragment.setArguments(args);

		return fragment;
	}

	private Activity activity;
	private ContentResolver contentResolver;

	@Override
	public void onAttach(final Activity activity)
	{
		super.onAttach(activity);

		this.activity = activity;
		this.contentResolver = activity.getContentResolver();
	}

	@Override
	public Dialog onCreateDialog(final Bundle savedInstanceState)
	{
		final Bundle args = getArguments();
		final String address = args.getString(KEY_ADDRESS);
		final String suggestedAddressLabel = args.getString(KEY_SUGGESTED_ADDRESS_LABEL);

		final LayoutInflater inflater = LayoutInflater.from(activity);

		final Uri uri = AddressBookProvider.contentUri(activity.getPackageName()).buildUpon().appendPath(address).build();

		final String label = AddressBookProvider.resolveLabel(activity, address);

		final boolean isAdd = label == null;

		final AlertDialog.Builder dialog = new AlertDialog.Builder(activity);
		dialog.setInverseBackgroundForced(true);
		dialog.setTitle(isAdd ? R.string.edit_address_book_entry_dialog_title_add : R.string.edit_address_book_entry_dialog_title_edit);

		final View view = inflater.inflate(R.layout.edit_address_book_entry_dialog, null);

		final TextView viewAddress = (TextView) view.findViewById(R.id.edit_address_book_entry_address);
		viewAddress.setText(WalletUtils.formatHash(address, Constants.ADDRESS_FORMAT_GROUP_SIZE, Constants.ADDRESS_FORMAT_LINE_SIZE));

		final TextView viewLabel = (TextView) view.findViewById(R.id.edit_address_book_entry_label);
		viewLabel.setText(label != null ? label : suggestedAddressLabel);

		dialog.setView(view);

		final DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener()
		{
			@Override
			public void onClick(final DialogInterface dialog, final int which)
			{
				if (which == DialogInterface.BUTTON_POSITIVE)
				{
					final String newLabel = viewLabel.getText().toString().trim();

					if (!newLabel.isEmpty())
					{
						final ContentValues values = new ContentValues();
						values.put(AddressBookProvider.KEY_LABEL, newLabel);

						if (isAdd)
							contentResolver.insert(uri, values);
						else
							contentResolver.update(uri, values, null, null);
					}
					else if (!isAdd)
					{
						contentResolver.delete(uri, null, null);
					}
				}
				else if (which == DialogInterface.BUTTON_NEUTRAL)
				{
					contentResolver.delete(uri, null, null);
				}

				dismiss();
			}
		};

		dialog.setPositiveButton(isAdd ? R.string.button_add : R.string.edit_address_book_entry_dialog_button_edit, onClickListener);
		if (!isAdd)
			dialog.setNeutralButton(R.string.button_delete, onClickListener);
		dialog.setNegativeButton(R.string.button_cancel, onClickListener);

		return dialog.create();
	}
}
