/*
 * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apg.ui;

import java.security.Security;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apg.Apg;
import org.apg.Id;
import org.spongycastle.jce.provider.BouncyCastleProvider;
import org.apg.R;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.text.util.Linkify;
import android.text.util.Linkify.TransformFilter;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends BaseActivity {
    static {
        Security.addProvider(new BouncyCastleProvider());
    }

    public void manageKeysOnClick(View view) {
        startActivity(new Intent(this, PublicKeyListActivity.class));
    }

    public void myKeysOnClick(View view) {
        startActivity(new Intent(this, SecretKeyListActivity.class));

    }

    public void encryptDecryptFileOnClick(View view) {
        Intent intent = new Intent(MainActivity.this, EncryptActivity.class);
        intent.setAction(Apg.Intent.ENCRYPT_FILE);
        startActivity(intent);

        // intent.setAction(Apg.Intent.DECRYPT_FILE);
    }

    public void encryptDecryptTextOnClick(View view) {
        Intent intent = new Intent(MainActivity.this, EncryptActivity.class);
        intent.setAction(Apg.Intent.ENCRYPT);
        startActivity(intent);

        // intent.setAction(Apg.Intent.DECRYPT);
    }

    public void helpOnClick(View view) {
        // TODO: implement help view
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        if (!mPreferences.hasSeenHelp()) {
            showDialog(Id.dialog.help);
        }

        if (Apg.isReleaseVersion(this) && !mPreferences.hasSeenChangeLog(Apg.getVersion(this))) {
            showDialog(Id.dialog.change_log);
        }
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {

        case Id.dialog.change_log: {
            AlertDialog.Builder alert = new AlertDialog.Builder(this);

            alert.setTitle("Changes " + Apg.getFullVersion(this));
            LayoutInflater inflater = (LayoutInflater) this
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = inflater.inflate(R.layout.info, null);
            TextView message = (TextView) layout.findViewById(R.id.message);

            message.setText("Changes:\n" + "* \n" + "\n"
                    + "WARNING: be careful editing your existing keys, as they "
                    + "WILL be stripped of certificates right now.\n" + "\n"
                    + "Also: key cross-certification is NOT supported, so signing "
                    + "with those keys will get a warning when the signature is " + "checked.\n"
                    + "\n" + "I hope APG continues to be useful to you, please send "
                    + "bug reports, feature wishes, feedback.");
            alert.setView(layout);

            alert.setCancelable(false);
            alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    MainActivity.this.removeDialog(Id.dialog.change_log);
                    mPreferences.setHasSeenChangeLog(Apg.getVersion(MainActivity.this), true);
                }
            });

            return alert.create();
        }

        case Id.dialog.help: {
            AlertDialog.Builder alert = new AlertDialog.Builder(this);

            alert.setTitle(R.string.title_help);

            LayoutInflater inflater = (LayoutInflater) this
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = inflater.inflate(R.layout.info, null);
            TextView message = (TextView) layout.findViewById(R.id.message);
            message.setText(R.string.text_help);

            TransformFilter packageNames = new TransformFilter() {
                public final String transformUrl(final Matcher match, String url) {
                    String name = match.group(1).toLowerCase();
                    if (name.equals("astro")) {
                        return "com.metago.astro";
                    } else if (name.equals("k-9 mail")) {
                        return "com.fsck.k9";
                    } else {
                        return "org.openintents.filemanager";
                    }
                }
            };

            Pattern pattern = Pattern.compile("(OI File Manager|ASTRO|K-9 Mail)");
            String scheme = "market://search?q=pname:";
            message.setAutoLinkMask(0);
            Linkify.addLinks(message, pattern, scheme, null, packageNames);

            alert.setView(layout);

            alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    MainActivity.this.removeDialog(Id.dialog.help);
                    mPreferences.setHasSeenHelp(true);
                }
            });

            return alert.create();
        }

        default: {
            return super.onCreateDialog(id);
        }
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add(0, Id.menu.option.manage_public_keys, 0, R.string.menu_managePublicKeys).setIcon(
                android.R.drawable.ic_menu_manage);
        menu.add(0, Id.menu.option.manage_secret_keys, 1, R.string.menu_manageSecretKeys).setIcon(
                android.R.drawable.ic_menu_manage);
        menu.add(2, Id.menu.option.preferences, 3, R.string.menu_preferences).setIcon(
                android.R.drawable.ic_menu_preferences);
        menu.add(2, Id.menu.option.key_server, 4, R.string.menu_keyServer).setIcon(
                android.R.drawable.ic_menu_search);
        menu.add(3, Id.menu.option.about, 5, R.string.menu_about).setIcon(
                android.R.drawable.ic_menu_info_details);
        menu.add(3, Id.menu.option.help, 6, R.string.menu_help).setIcon(
                android.R.drawable.ic_menu_help);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case Id.menu.option.create: {
            showDialog(Id.dialog.new_account);
            return true;
        }

        case Id.menu.option.manage_public_keys: {
            startActivity(new Intent(this, PublicKeyListActivity.class));
            return true;
        }

        case Id.menu.option.manage_secret_keys: {
            startActivity(new Intent(this, SecretKeyListActivity.class));
            return true;
        }

        case Id.menu.option.help: {
            showDialog(Id.dialog.help);
            return true;
        }

        case Id.menu.option.key_server: {
            startActivity(new Intent(this, KeyServerQueryActivity.class));
            return true;
        }

        default: {
            return super.onOptionsItemSelected(item);
        }
        }
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        TextView nameTextView = (TextView) v.findViewById(R.id.accountName);
        if (nameTextView != null) {
            menu.setHeaderTitle(nameTextView.getText());
            menu.add(0, Id.menu.delete, 0, R.string.menu_deleteAccount);
        }
    }

}