/*
 * Copyright 2016, 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.managedprovisioning.finalization;

import static android.app.admin.DevicePolicyManager.ACTION_MANAGED_PROFILE_PROVISIONED;
import static android.app.admin.DevicePolicyManager.EXTRA_PROVISIONING_ACCOUNT_TO_MIGRATE;
import static com.android.internal.util.Preconditions.checkNotNull;

import android.accounts.Account;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.UserHandle;
import android.support.annotation.Nullable;

import com.android.internal.annotations.VisibleForTesting;
import com.android.managedprovisioning.common.ProvisionLogger;
import com.android.managedprovisioning.common.Utils;

/**
 * Class that acts as the final receiver of the intent ACTION_PROFILE_PROVISIONING_COMPLETE
 * which is broadcasted using
 * {@link Context#sendOrderedBroadcast(Intent, String, BroadcastReceiver, android.os.Handler, int, String, android.os.Bundle)}
 * after profile owner or device owner provisioning is completed.
 */
public class DpcReceivedSuccessReceiver extends BroadcastReceiver {

    private final Account mMigratedAccount;
    private final String mMdmPackageName;
    private final boolean mKeepAccountMigrated;
    private final Utils mUtils;
    private final UserHandle mManagedUserHandle;

    public DpcReceivedSuccessReceiver(@Nullable Account migratedAccount,
            boolean keepAccountMigrated, UserHandle managedUserHandle, String mdmPackageName) {
        this(migratedAccount, keepAccountMigrated, managedUserHandle, mdmPackageName, new Utils());
    }

    @VisibleForTesting
    DpcReceivedSuccessReceiver(Account migratedAccount, boolean keepAccountMigrated,
        UserHandle managedUserHandle, String mdmPackageName, Utils utils) {
        mMigratedAccount = migratedAccount;
        mKeepAccountMigrated = keepAccountMigrated;
        mMdmPackageName = checkNotNull(mdmPackageName);
        mManagedUserHandle = checkNotNull(managedUserHandle);
        mUtils = checkNotNull(utils);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        ProvisionLogger.logd("ACTION_PROFILE_PROVISIONING_COMPLETE broadcast received by mdm");

        final Intent primaryProfileSuccessIntent = new Intent(ACTION_MANAGED_PROFILE_PROVISIONED);
        primaryProfileSuccessIntent.setPackage(mMdmPackageName);
        primaryProfileSuccessIntent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES |
                Intent.FLAG_RECEIVER_FOREGROUND);
        primaryProfileSuccessIntent.putExtra(Intent.EXTRA_USER, mManagedUserHandle);

        // Now cleanup the primary profile if necessary
        if (mMigratedAccount != null) {
            primaryProfileSuccessIntent.putExtra(EXTRA_PROVISIONING_ACCOUNT_TO_MIGRATE,
                    mMigratedAccount);
            finishAccountMigration(context, primaryProfileSuccessIntent);
            // Note that we currently do not check if account migration worked
        } else {
            context.sendBroadcast(primaryProfileSuccessIntent);
        }
    }

    private void finishAccountMigration(final Context context,
            final Intent primaryProfileSuccessIntent) {
        new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(Void... params) {
                if (!mKeepAccountMigrated) {
                    mUtils.removeAccount(context, mMigratedAccount);
                }
                context.sendBroadcast(primaryProfileSuccessIntent);
                return null;
            }
        }.execute();
    }
}