package com.itheima.mobileguard.services;

import java.lang.reflect.Method;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.ContentObserver;
import android.location.Address;
import android.net.Uri;
import android.os.Handler;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.SmsMessage;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;

import com.android.internal.telephony.ITelephony;
import com.itheima.mobileguard.db.dao.BlackNumberDao;
import com.itheima.mobileguard.db.dao.NumberAddressDao;

public class CallSmsSafeService extends Service {
    private InnerSmsReceiver receiver;
    private BlackNumberDao dao;
    //系统提供的电话管理器，电话管理的服务
    private TelephonyManager tm;
    private MyPhoneListener listener;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        dao = new BlackNumberDao(this);
        //后台运行一个服务
        tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        listener = new MyPhoneListener();
        tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);//设置电话监听器
        //短信的广播接受者
        receiver  = new InnerSmsReceiver();
        IntentFilter filter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
        filter.setPriority(Integer.MAX_VALUE);//优先级最大
        registerReceiver(receiver, filter);
        super.onCreate();
    }
    
    private class MyPhoneListener extends PhoneStateListener{//电话状态监听器
        @Override
        public void onCallStateChanged(int state, final String incomingNumber) {
            super.onCallStateChanged(state, incomingNumber);
            switch (state) {
            case TelephonyManager.CALL_STATE_IDLE://空闲状态
                break;
            case TelephonyManager.CALL_STATE_RINGING://响铃状态
                String mode = dao.findBlockMode(incomingNumber);//incomingNumber电话号码
                if("1".equals(mode)||"3".equals(mode)){
                    Log.i("MyPhoneListener","挂断电话");
                    //观察（另外一个应用程序数据库的变化）呼叫记录的变化，如果呼叫记录生成了，就把呼叫记录给删除掉。
                    Uri uri = Uri.parse("content://call_log/calls");
                    getContentResolver().registerContentObserver(uri, true, new CallLogObserver(new Handler(), incomingNumber));
                    //用代码挂断电话。
                    endCall();//电话挂断之后，会在另外一个应用程序里面生成呼叫记录。
                    //清除黑名单号码产生的呼叫记录
                    
                }
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK://接通状态
                
                break;
            }
        }
    }
    
    
    private class CallLogObserver extends ContentObserver{
        private String incomingNumber;
        public CallLogObserver(Handler handler,String incomingNumber) {
            super(handler);
            this.incomingNumber = incomingNumber;
        }
        //观察到数据库内容变化调用的方法
        @Override
        public void onChange(boolean selfChange) {
            Log.i("CallLogObserver","呼叫记录数据库的内容变化了。");
            getContentResolver().unregisterContentObserver(this);
            deleteCallLog(incomingNumber);
            super.onChange(selfChange);
        }
    }
    
    @Override
    public void onDestroy() {
        unregisterReceiver(receiver);
        receiver = null;
        tm.listen(listener, PhoneStateListener.LISTEN_NONE);
        listener = null;
        super.onDestroy();
    }
    
    /**
     * 清除呼叫记录
     * @param incomingNumber
     */
    public void deleteCallLog(String incomingNumber) {
        ContentResolver resolver = getContentResolver();
        Uri uri = Uri.parse("content://call_log/calls");
        resolver.delete(uri, "number=?", new String[]{incomingNumber});
    }

    /**
     * 挂断电话
     */
    public void endCall() {
        try {
            Class clazz = getClassLoader().loadClass("android.os.ServiceManager");//ServiceManager在代码里面点不进去，但是源码有这个类，
            Method method = clazz.getDeclaredMethod("getService", String.class);
            IBinder iBinder = (IBinder) method.invoke(null, TELEPHONY_SERVICE);//TELEPHONY_SERVICE="phone"
            ITelephony itelephony = ITelephony.Stub.asInterface(iBinder);//ITelephony.aidl是通过源码复制的。
            itelephony.endCall();
            //开通呼叫转移 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private class InnerSmsReceiver extends BroadcastReceiver{
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.i("InnerSmsReceiver","短信到来了。");
            //判断短信的发件人是否在黑名单列表里面，
            Object[] objs = (Object[]) intent.getExtras().get("pdus");
            for(Object obj :objs){
                SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) obj);
                String sender = smsMessage.getOriginatingAddress();//拿到短信的电话号码
                String mode = dao.findBlockMode(sender);//模式
                if("1".equals(mode)||"2".equals(mode)){
                    Log.i("InnerSmsReceiver","黑名单短信被拦截。");
                    abortBroadcast();//终止短信的广播 ，短信就被拦截 
                }
                //智能拦截。
                String body = smsMessage.getMessageBody();//拿到短信的内容
                if(body.contains("发票")){ //你的头发票亮极了。
                    Log.i("InnerSmsReceiver","拦截到垃圾发票短信，终止");
                    abortBroadcast();//终止短信的广播 ，短信就被拦截 
                }
            }
        }
    }
}

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * 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 com.android.internal.telephony;

import android.os.Bundle;
import java.util.List;
import android.telephony.NeighboringCellInfo;

/**
 * Interface used to interact with the phone.  Mostly this is used by the
 * TelephonyManager class.  A few places are still using this directly.
 * Please clean them up if possible and use TelephonyManager insteadl.
 *
 * {@hide}
 */
interface ITelephony {

    /**
     * Dial a number. This doesn't place the call. It displays
     * the Dialer screen.
     * @param number the number to be dialed. If null, this
     * would display the Dialer screen with no number pre-filled.
     */
    void dial(String number);

    /**
     * Place a call to the specified number.
     * @param number the number to be called.
     */
    void call(String number);

    /**
     * If there is currently a call in progress, show the call screen.
     * The DTMF dialpad may or may not be visible initially, depending on
     * whether it was up when the user last exited the InCallScreen.
     *
     * @return true if the call screen was shown.
     */
    boolean showCallScreen();

    /**
     * Variation of showCallScreen() that also specifies whether the
     * DTMF dialpad should be initially visible when the InCallScreen
     * comes up.
     *
     * @param showDialpad if true, make the dialpad visible initially,
     *                    otherwise hide the dialpad initially.
     * @return true if the call screen was shown.
     *
     * @see showCallScreen
     */
    boolean showCallScreenWithDialpad(boolean showDialpad);

    /**
     * End call or go to the Home screen
     *
     * @return whether it hung up
     */
    boolean endCall();

    /**
     * Answer the currently-ringing call.
     *
     * If there's already a current active call, that call will be
     * automatically put on hold.  If both lines are currently in use, the
     * current active call will be ended.
     *
     * TODO: provide a flag to let the caller specify what policy to use
     * if both lines are in use.  (The current behavior is hardwired to
     * "answer incoming, end ongoing", which is how the CALL button
     * is specced to behave.)
     *
     * TODO: this should be a oneway call (especially since it's called
     * directly from the key queue thread).
     */
    void answerRingingCall();

    /**
     * Silence the ringer if an incoming call is currently ringing.
     * (If vibrating, stop the vibrator also.)
     *
     * It's safe to call this if the ringer has already been silenced, or
     * even if there's no incoming call.  (If so, this method will do nothing.)
     *
     * TODO: this should be a oneway call too (see above).
     *       (Actually *all* the methods here that return void can
     *       probably be oneway.)
     */
    void silenceRinger();

    /**
     * Check if we are in either an active or holding call
     * @return true if the phone state is OFFHOOK.
     */
    boolean isOffhook();

    /**
     * Check if an incoming phone call is ringing or call waiting.
     * @return true if the phone state is RINGING.
     */
    boolean isRinging();

    /**
     * Check if the phone is idle.
     * @return true if the phone state is IDLE.
     */
    boolean isIdle();

    /**
     * Check to see if the radio is on or not.
     * @return returns true if the radio is on.
     */
    boolean isRadioOn();

    /**
     * Check if the SIM pin lock is enabled.
     * @return true if the SIM pin lock is enabled.
     */
    boolean isSimPinEnabled();

    /**
     * Cancels the missed calls notification.
     */
    void cancelMissedCallsNotification();

    /**
     * Supply a pin to unlock the SIM.  Blocks until a result is determined.
     * @param pin The pin to check.
     * @return whether the operation was a success.
     */
    boolean supplyPin(String pin);

    /**
     * Handles PIN MMI commands (PIN/PIN2/PUK/PUK2), which are initiated
     * without SEND (so <code>dial</code> is not appropriate).
     *
     * @param dialString the MMI command to be executed.
     * @return true if MMI command is executed.
     */
    boolean handlePinMmi(String dialString);

    /**
     * Toggles the radio on or off.
     */
    void toggleRadioOnOff();

    /**
     * Set the radio to on or off
     */
    boolean setRadio(boolean turnOn);

    /**
     * Request to update location information in service state
     */
    void updateServiceLocation();

    /**
     * Enable location update notifications.
     */
    void enableLocationUpdates();

    /**
     * Disable location update notifications.
     */
    void disableLocationUpdates();

    /**
     * Enable a specific APN type.
     */
    int enableApnType(String type);

    /**
     * Disable a specific APN type.
     */
    int disableApnType(String type);

    /**
     * Allow mobile data connections.
     */
    boolean enableDataConnectivity();

    /**
     * Disallow mobile data connections.
     */
    boolean disableDataConnectivity();

    /**
     * Report whether data connectivity is possible.
     */
    boolean isDataConnectivityPossible();

    Bundle getCellLocation();

    /**
     * Returns the neighboring cell information of the device.
     */
    List<NeighboringCellInfo> getNeighboringCellInfo();

     int getCallState();
     int getDataActivity();
     int getDataState();

    /**
     * Returns the current active phone type as integer.
     * Returns TelephonyManager.PHONE_TYPE_CDMA if RILConstants.CDMA_PHONE
     * and TelephonyManager.PHONE_TYPE_GSM if RILConstants.GSM_PHONE
     */
    int getActivePhoneType();

    /**
     * Returns the CDMA ERI icon index to display
     */
    int getCdmaEriIconIndex();

    /**
     * Returns the CDMA ERI icon mode,
     * 0 - ON
     * 1 - FLASHING
     */
    int getCdmaEriIconMode();

    /**
     * Returns the CDMA ERI text,
     */
    String getCdmaEriText();

    /**
     * Returns true if CDMA provisioning needs to run.
     */
    boolean getCdmaNeedsProvisioning();

    /**
      * Returns the unread count of voicemails
      */
    int getVoiceMessageCount();

    /**
      * Returns the network type
      */
    int getNetworkType();
    
    /**
     * Return true if an ICC card is present
     */
    boolean hasIccCard();
}