/*
 * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
 *
 * 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.openintents.openpgp.util;

import org.openintents.openpgp.IOpenPgpService;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;

public class OpenPgpServiceConnection {

    // interface to create callbacks for onServiceConnected
    public interface OnBound {
        public void onBound(IOpenPgpService service);
    }

    private Context mApplicationContext;

    private IOpenPgpService mService;
    private String mProviderPackageName;

    private OnBound mOnBoundListener;

    /**
     * Create new OpenPgpServiceConnection
     *
     * @param context
     * @param providerPackageName specify package name of OpenPGP provider,
     *                            e.g., "org.sufficientlysecure.keychain"
     */
    public OpenPgpServiceConnection(Context context, String providerPackageName) {
        this.mApplicationContext = context.getApplicationContext();
        this.mProviderPackageName = providerPackageName;
    }

    /**
     * Create new OpenPgpServiceConnection
     *
     * @param context
     * @param providerPackageName specify package name of OpenPGP provider,
     *                            e.g., "org.sufficientlysecure.keychain"
     * @param onBoundListener     callback, executed when connection to service has been established
     */
    public OpenPgpServiceConnection(Context context, String providerPackageName,
                                    OnBound onBoundListener) {
        this.mApplicationContext = context.getApplicationContext();
        this.mProviderPackageName = providerPackageName;
        this.mOnBoundListener = onBoundListener;
    }

    public IOpenPgpService getService() {
        return mService;
    }

    public boolean isBound() {
        return (mService != null);
    }

    private ServiceConnection mServiceConnection = new ServiceConnection() {
        public void onServiceConnected(ComponentName name, IBinder service) {
            mService = IOpenPgpService.Stub.asInterface(service);
            if (mOnBoundListener != null) {
                mOnBoundListener.onBound(mService);
            }
        }

        public void onServiceDisconnected(ComponentName name) {
            mService = null;
        }
    };

    /**
     * If not already bound, bind to service!
     *
     * @return
     */
    public boolean bindToService() {
        // if not already bound...
        if (mService == null) {
            try {
                Intent serviceIntent = new Intent();
                serviceIntent.setAction(IOpenPgpService.class.getName());
                // NOTE: setPackage is very important to restrict the intent to this provider only!
                serviceIntent.setPackage(mProviderPackageName);
                mApplicationContext.bindService(serviceIntent, mServiceConnection,
                        Context.BIND_AUTO_CREATE);

                return true;
            } catch (Exception e) {
                return false;
            }
        } else {
            return true;
        }
    }

    public void unbindFromService() {
        mApplicationContext.unbindService(mServiceConnection);
    }

}

@@ -938,16 +938,25 @@
 %0A    // 
+callback 
 interfac
@@ -960,51 +960,8 @@
 face
- to create callbacks for onServiceConnected
 %0A   
@@ -1037,24 +1037,67 @@
 ce service);
+%0A%0A        public void onError(Exception e);
 %0A    %7D%0A%0A    
@@ -1275,39 +1275,25 @@
  Create new 
-OpenPgpServiceC
+c
 onnection%0A  
@@ -1606,32 +1606,8 @@
 text
-.getApplicationContext()
 ;%0A  
@@ -1698,32 +1698,32 @@
 new 
-OpenPgpServiceConnection
+connection with callback
 %0A   
@@ -2167,119 +2167,38 @@
 this
-.mApplicationContext = context.getApplicationContext();%0A        this.mProviderPackageName = providerPackageName
+(context, providerPackageName)
 ;%0A  
@@ -2946,23 +2946,20 @@
  public 
-boolean
+void
  bindToS
@@ -3108,82 +3108,33 @@
 ent(
-);%0A                serviceIntent.setAction(IOpenPgpService.class.getName()
+OpenPgpApi.SERVICE_INTENT
 );%0A 
@@ -3433,38 +3433,8 @@
 TE);
-%0A%0A                return true;
 %0A   
@@ -3486,77 +3486,323 @@
     
-return false;%0A            %7D%0A        %7D else %7B%0A            return true;
+if (mOnBoundListener != null) %7B%0A                    mOnBoundListener.onError(e);%0A                %7D%0A            %7D%0A        %7D else %7B%0A            // already bound, but also inform client about it with callback%0A            if (mOnBoundListener != null) %7B%0A                mOnBoundListener.onBound(mService);%0A            %7D
 %0A   

Refactor OpenPgpServiceConnection with better callback