/*
 * Copyright (C) 2011 The CyanogenMod 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 static com.android.internal.telephony.RILConstants.*;

import android.content.*;
import android.net.*;
import android.os.*;
import android.telephony.*;
import android.text.TextUtils;
import android.util.Log;
import com.android.internal.telephony.cdma.CdmaCallWaitingNotification;
import com.android.internal.telephony.cdma.CdmaInformationRecords;
import com.android.internal.telephony.gsm.SmsBroadcastConfigInfo;
import com.android.internal.telephony.gsm.SuppServiceNotification;
import java.io.*;
import java.util.*;

/**
 * Custom SEMC ril
 *
 * {@hide}
 */
public class SemcRIL extends RIL {
    String mAid = "";
    IccHandler mIccHandler;
    HandlerThread mIccThread;

    public SemcRIL(Context context, int networkMode, int cdmaSubscription) {
        super(context, networkMode, cdmaSubscription);
        mIccHandler = null;
    }

    @Override
    protected RadioState getRadioStateFromInt(int stateInt) {
        RadioState state;

        /* RIL_RadioState ril.h */
        switch(stateInt) {
            case 0: state = RadioState.RADIO_OFF; break;
            case 1: state = RadioState.RADIO_UNAVAILABLE; break;
            case 2: {
                if (mIccHandler == null)
                {
                    mIccThread = new HandlerThread("IccHandler");
                    mIccThread.start();
                    mIccHandler = new IccHandler(this, mIccThread.getLooper());
                }
                mIccHandler.run();
                state = mPhoneType == RILConstants.CDMA_PHONE ? RadioState.RUIM_NOT_READY : RadioState.SIM_NOT_READY;
                break;
            }
            case 3: state = RadioState.SIM_LOCKED_OR_ABSENT; break;
            case 4: state = RadioState.SIM_READY; break;
            case 5: state = RadioState.RUIM_NOT_READY; break;
            case 6: state = RadioState.RUIM_READY; break;
            case 7: state = RadioState.RUIM_LOCKED_OR_ABSENT; break;
            case 8: state = RadioState.NV_NOT_READY; break;
            case 9: state = RadioState.NV_READY; break;

            default:
                throw new RuntimeException(
                            "Unrecognized RIL_RadioState: " + stateInt);
        }
        return state;
    }

    @Override
    protected Object
    responseIccCardStatus(Parcel p) {
        IccCardApplication ca;

        IccCardStatus status = new IccCardStatus();
        status.setCardState(p.readInt());
        status.setUniversalPinState(p.readInt());
        status.setGsmUmtsSubscriptionAppIndex(p.readInt());
        status.setCdmaSubscriptionAppIndex(p.readInt());
        status.setImsSubscriptionAppIndex(p.readInt());

        int numApplications = p.readInt();

        // limit to maximum allowed applications
        if (numApplications > IccCardStatus.CARD_MAX_APPS) {
            numApplications = IccCardStatus.CARD_MAX_APPS;
        }
        status.setNumApplications(numApplications);

        for (int i = 0 ; i < numApplications ; i++) {
            ca = new IccCardApplication();
            ca.app_type       = ca.AppTypeFromRILInt(p.readInt());
            ca.app_state      = ca.AppStateFromRILInt(p.readInt());
            ca.perso_substate = ca.PersoSubstateFromRILInt(p.readInt());
            ca.aid            = p.readString();
            ca.app_label      = p.readString();
            ca.pin1_replaced  = p.readInt();
            ca.pin1           = ca.PinStateFromRILInt(p.readInt());
            ca.pin2           = ca.PinStateFromRILInt(p.readInt());
            status.addApplication(ca);
        }

        updateIccType(status);
        return status;
    }

    private void updateIccType (IccCardStatus status) {
        if (status.getNumApplications() > 0)
        {
            int appType;
            if (mPhoneType == RILConstants.CDMA_PHONE)
            {
                appType = status.getCdmaSubscriptionAppIndex();
            } else {
                appType = status.getGsmUmtsSubscriptionAppIndex();
            }

            IccCardApplication application = status.getApplication(appType);
            mAid = application.aid;
            Log.d(LOG_TAG, "Picked default AID: " + mAid);
            SystemProperties.set("ril.icctype", Integer.toString(application.app_type.ordinal()));
        }
    }

    @Override
    protected DataCallState getDataCallState(Parcel p, int version) {
        DataCallState dataCall = new DataCallState();

        dataCall.version = version;
        if (version < 5) {
            dataCall.cid = p.readInt();
            dataCall.active = p.readInt();
            dataCall.type = p.readString();
            String addresses = p.readString();
            if (!TextUtils.isEmpty(addresses)) {
                dataCall.addresses = addresses.split(" ");
            }
            // DataCallState needs an ifname. Since we don't have one use the name from the ThrottleService resource (default=rmnet0).
            dataCall.ifname = "rmnet0";
        } else {
            dataCall.status = p.readInt();
	          dataCall.suggestedRetryTime = p.readInt();
            dataCall.cid = p.readInt();
            dataCall.active = p.readInt();
            dataCall.type = p.readString();
            dataCall.ifname = p.readString();
            if ((dataCall.status == DataConnection.FailCause.NONE.getErrorCode()) &&
                    TextUtils.isEmpty(dataCall.ifname)) {
              throw new RuntimeException("getDataCallState, no ifname");
            }
            String addresses = p.readString();
            if (!TextUtils.isEmpty(addresses)) {
                dataCall.addresses = addresses.split(" ");
            }
            String dnses = p.readString();
            if (!TextUtils.isEmpty(dnses)) {
                dataCall.dnses = dnses.split(" ");
            }
            String gateways = p.readString();
            if (!TextUtils.isEmpty(gateways)) {
                dataCall.gateways = gateways.split(" ");
            }
        }
        return dataCall;
    }


    @Override public void
    supplyIccPin(String pin, Message result) {
        supplyIccPinForApp(pin, mAid, result);
    }

    @Override public void
    changeIccPin(String oldPin, String newPin, Message result) {
        changeIccPinForApp(oldPin, newPin, mAid, result);
    }

    @Override public void
    supplyIccPin2(String pin, Message result) {
        supplyIccPin2ForApp(pin, mAid, result);
    }

    @Override public void
    changeIccPin2(String oldPin2, String newPin2, Message result) {
        changeIccPin2ForApp(oldPin2, newPin2, mAid, result);
    }

    @Override public void
    supplyIccPuk(String puk, String newPin, Message result) {
        supplyIccPukForApp(puk, newPin, mAid, result);
    }

    @Override public void
    supplyIccPuk2(String puk2, String newPin2, Message result) {
        supplyIccPuk2ForApp(puk2, newPin2, mAid, result);
    }

    @Override
    public void
    queryFacilityLock(String facility, String password, int serviceClass,
                            Message response) {
        queryFacilityLockForApp(facility, password, serviceClass, mAid, response);
    }

    @Override
    public void
    setFacilityLock (String facility, boolean lockState, String password,
                        int serviceClass, Message response) {
        setFacilityLockForApp(facility, lockState, password, serviceClass, mAid, response);
    }

    @Override
    public void
    iccIO (int command, int fileid, String path, int p1, int p2, int p3,
            String data, String pin2, Message result) {
        //Note: This RIL request has not been renamed to ICC,
        //       but this request is also valid for SIM and RUIM
        RILRequest rr
                = RILRequest.obtain(RIL_REQUEST_SIM_IO, result);

        rr.mp.writeInt(command);
        rr.mp.writeInt(fileid);
        rr.mp.writeString(path);
        rr.mp.writeInt(p1);
        rr.mp.writeInt(p2);
        rr.mp.writeInt(p3);
        rr.mp.writeString(data);
        rr.mp.writeString(pin2);
        rr.mp.writeString(mAid);

        if (RILJ_LOGD) riljLog(rr.serialString() + "> iccIO: " + requestToString(rr.mRequest)
                + " 0x" + Integer.toHexString(command)
                + " 0x" + Integer.toHexString(fileid) + " "
                + " path: " + path + ","
                + p1 + "," + p2 + "," + p3);

        send(rr);
    }

    @Override
    public void
    getIMSI(Message result) {
        RILRequest rr = RILRequest.obtain(RIL_REQUEST_GET_IMSI, result);
        rr.mp.writeString(mAid);

        if (RILJ_LOGD) riljLog(rr.serialString() + "> " + requestToString(rr.mRequest));

        send(rr);
    }

    @Override
    public void
    setNetworkSelectionModeAutomatic(Message response) {
        RILRequest rr
                = RILRequest.obtain(RIL_REQUEST_SET_NETWORK_SELECTION_AUTOMATIC,
                                    response);

        if (RILJ_LOGD) riljLog(rr.serialString() + "> " + requestToString(rr.mRequest));

        rr.mp.writeString(null);
        rr.mp.writeInt(-1);

        send(rr);
    }

    @Override
    public void
    setNetworkSelectionModeManual(String operatorNumeric, Message response) {
        RILRequest rr
                = RILRequest.obtain(RIL_REQUEST_SET_NETWORK_SELECTION_MANUAL,
                                    response);

        if (RILJ_LOGD) riljLog(rr.serialString() + "> " + requestToString(rr.mRequest)
                    + " " + operatorNumeric);

        rr.mp.writeString(operatorNumeric);
        rr.mp.writeInt(-1);

        send(rr);
    }

    @Override
    protected Object
    responseOperatorInfos(Parcel p) {
        String strings[] = (String [])responseStrings(p);
        ArrayList<OperatorInfo> ret;

        if (strings.length % 5 != 0) {
            throw new RuntimeException(
                "RIL_REQUEST_QUERY_AVAILABLE_NETWORKS: invalid response. Got "
                + strings.length + " strings, expected multible of 5");
        }

        ret = new ArrayList<OperatorInfo>(strings.length / 4);

        for (int i = 0 ; i < strings.length ; i += 5) {
            ret.add (
                new OperatorInfo(
                    strings[i+0],
                    strings[i+1],
                    strings[i+2],
                    strings[i+3]));
        }
        return ret;
    }

    @Override
    public void
    dial(String address, int clirMode, UUSInfo uusInfo, Message result) {
        RILRequest rr = RILRequest.obtain(RIL_REQUEST_DIAL, result);

        rr.mp.writeString(address);
        rr.mp.writeInt(clirMode);
        rr.mp.writeInt(0); // UUS information is absent

        if (uusInfo == null) {
            rr.mp.writeInt(0); // UUS information is absent
        } else {
            rr.mp.writeInt(1); // UUS information is present
            rr.mp.writeInt(uusInfo.getType());
            rr.mp.writeInt(uusInfo.getDcs());
            rr.mp.writeByteArray(uusInfo.getUserData());
        }
        rr.mp.writeInt(255);

        if (RILJ_LOGD) riljLog(rr.serialString() + "> " + requestToString(rr.mRequest));

        send(rr);
    }

    class IccHandler extends Handler implements Runnable {
        private static final int EVENT_RADIO_ON = 1;
        private static final int EVENT_ICC_STATUS_CHANGED = 2;
        private static final int EVENT_GET_ICC_STATUS_DONE = 3;
        private static final int EVENT_RADIO_OFF_OR_UNAVAILABLE = 4;

        private RIL mRil;
        private boolean mRadioOn = false;

        public IccHandler (RIL ril, Looper looper) {
            super (looper);
            mRil = ril;
        }

        public void handleMessage (Message paramMessage) {
            switch (paramMessage.what) {
                case EVENT_RADIO_ON:
                    mRadioOn = true;
                    Log.d(LOG_TAG, "Radio on -> Forcing sim status update");
                    sendMessage(obtainMessage(EVENT_ICC_STATUS_CHANGED));
                    break;
                case EVENT_GET_ICC_STATUS_DONE:
                    AsyncResult asyncResult = (AsyncResult) paramMessage.obj;
                    if (asyncResult.exception != null) {
                        Log.e (LOG_TAG, "IccCardStatusDone shouldn't return exceptions!", asyncResult.exception);
                        break;
                    }
                    IccCardStatus status = (IccCardStatus) asyncResult.result;
                    if (status.getNumApplications() == 0) {
                        if (!mRil.getRadioState().isOn()) {
                            break;
                        }

                        if (mPhoneType == RILConstants.CDMA_PHONE) {
                            mRil.setRadioState(CommandsInterface.RadioState.RUIM_LOCKED_OR_ABSENT);
                        } else {
                            mRil.setRadioState(CommandsInterface.RadioState.SIM_LOCKED_OR_ABSENT);
                        }
                    } else {
                        int appIndex = -1;
                        if (mPhoneType == RILConstants.CDMA_PHONE) {
                            appIndex = status.getCdmaSubscriptionAppIndex();
                            Log.d(LOG_TAG, "This is a CDMA PHONE " + appIndex);
                        } else {
                            appIndex = status.getGsmUmtsSubscriptionAppIndex();
                            Log.d(LOG_TAG, "This is a GSM PHONE " + appIndex);
                        }

                        IccCardApplication application = status.getApplication(appIndex);
                        IccCardApplication.AppState app_state = application.app_state;
                        IccCardApplication.AppType app_type = application.app_type;

                        switch (app_state) {
                            case APPSTATE_PIN:
                            case APPSTATE_PUK:
                                switch (app_type) {
                                    case APPTYPE_SIM:
                                    case APPTYPE_USIM:
                                        mRil.setRadioState(CommandsInterface.RadioState.SIM_LOCKED_OR_ABSENT);
                                        break;
                                    case APPTYPE_RUIM:
                                        mRil.setRadioState(CommandsInterface.RadioState.RUIM_LOCKED_OR_ABSENT);
                                        break;
                                    default:
                                        Log.e(LOG_TAG, "Currently we don't handle SIMs of type: " + app_type);
                                        return;
                                }
                                break;
                            case APPSTATE_READY:
                                switch (app_type) {
                                    case APPTYPE_SIM:
                                    case APPTYPE_USIM:
                                        mRil.setRadioState(CommandsInterface.RadioState.SIM_READY);
                                        break;
                                    case APPTYPE_RUIM:
                                        mRil.setRadioState(CommandsInterface.RadioState.RUIM_READY);
                                        break;
                                    default:
                                        Log.e(LOG_TAG, "Currently we don't handle SIMs of type: " + app_type);
                                        return;
                                }
                                break;
                            default:
                                return;
                        }
                    }
                    break;
                case EVENT_ICC_STATUS_CHANGED:
                    if (mRadioOn) {
                        Log.d(LOG_TAG, "Received EVENT_ICC_STATUS_CHANGED, calling getIccCardStatus");
                         mRil.getIccCardStatus(obtainMessage(EVENT_GET_ICC_STATUS_DONE, paramMessage.obj));
                    } else {
                         Log.d(LOG_TAG, "Received EVENT_ICC_STATUS_CHANGED while radio is not ON. Ignoring");
                    }
                    break;
                case EVENT_RADIO_OFF_OR_UNAVAILABLE:
                    mRadioOn = false;
                    // disposeCards(); // to be verified;
                default:
                    Log.e(LOG_TAG, " Unknown Event " + paramMessage.what);
                    break;
            }
        }

        public void run () {
            mRil.registerForIccStatusChanged(this, EVENT_ICC_STATUS_CHANGED, null);
            Message msg = obtainMessage(EVENT_RADIO_ON);
            mRil.getIccCardStatus(msg);
        }
    }
}