/*
 * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
 *
 * 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 org.sufficientlysecure.keychain.ui.dialog;

import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.support.v4.app.DialogFragment;

import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.util.Log;

public class EditUserIdDialogFragment extends DialogFragment {
    private static final String ARG_MESSENGER = "messenger";

    private static final String ARG_IS_REVOKED = "is_revoked";
    private static final String ARG_IS_REVOKED_PENDING = "is_revoked_pending";

    public static final int MESSAGE_CHANGE_PRIMARY_USER_ID = 1;
    public static final int MESSAGE_REVOKE = 2;

    private Messenger mMessenger;

    /**
     * Creates new instance of this dialog fragment
     */
    public static EditUserIdDialogFragment newInstance(Messenger messenger, boolean isRevoked,
                                                       boolean isRevokedPending) {
        EditUserIdDialogFragment frag = new EditUserIdDialogFragment();
        Bundle args = new Bundle();
        args.putParcelable(ARG_MESSENGER, messenger);
        args.putBoolean(ARG_IS_REVOKED, isRevoked);
        args.putBoolean(ARG_IS_REVOKED_PENDING, isRevokedPending);

        frag.setArguments(args);

        return frag;
    }

    /**
     * Creates dialog
     */
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        mMessenger = getArguments().getParcelable(ARG_MESSENGER);
        boolean isRevoked = getArguments().getBoolean(ARG_IS_REVOKED);
        boolean isRevokedPending = getArguments().getBoolean(ARG_IS_REVOKED_PENDING);

        CustomAlertDialogBuilder builder = new CustomAlertDialogBuilder(getActivity());
        builder.setTitle(R.string.edit_key_edit_user_id_title);

        if (isRevokedPending) {
            CharSequence[] array = getResources().getStringArray(R.array.edit_key_edit_user_id_revert_revocation);

            builder.setItems(array, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    switch (which) {
                        case 0:
                            sendMessageToHandler(MESSAGE_REVOKE, null);
                            break;
                        default:
                            break;
                    }
                }
            });
        } else if (isRevoked) {
            builder.setMessage(R.string.edit_key_edit_user_id_revoked);
        } else {
            CharSequence[] array = getResources().getStringArray(R.array.edit_key_edit_user_id);

            builder.setItems(array, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    switch (which) {
                        case 0:
                            sendMessageToHandler(MESSAGE_CHANGE_PRIMARY_USER_ID, null);
                            break;
                        case 1:
                            sendMessageToHandler(MESSAGE_REVOKE, null);
                            break;
                        default:
                            break;
                    }
                }
            });
        }

        builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int id) {
                dismiss();
            }
        });

        return builder.show();
    }

    /**
     * Send message back to handler which is initialized in a activity
     *
     * @param what Message integer you want to send
     */
    private void sendMessageToHandler(Integer what, Bundle data) {
        Message msg = Message.obtain();
        msg.what = what;
        if (data != null) {
            msg.setData(data);
        }

        try {
            mMessenger.send(msg);
        } catch (RemoteException e) {
            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
        } catch (NullPointerException e) {
            Log.w(Constants.TAG, "Messenger is null!", e);
        }
    }
}