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/*
* Copyright (C) 2017 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.tv.tuner.util;
import android.content.Context;
import android.location.Address;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import com.android.tv.tuner.TunerPreferences;
import com.android.tv.util.LocationUtils;
import java.io.IOException;
import java.util.Locale;
/**
* A utility class to update, get, and set the last known postal or zip code.
*/
public class PostalCodeUtils {
private static final String TAG = "PostalCodeUtils";
private static final String SUPPORTED_COUNTRY_CODE = Locale.US.getCountry();
/** Returns {@code true} if postal code has been changed */
public static boolean updatePostalCode(Context context)
throws IOException, SecurityException, NoPostalCodeException {
String postalCode = getPostalCode(context);
String lastPostalCode = getLastPostalCode(context);
if (TextUtils.isEmpty(postalCode)) {
if (TextUtils.isEmpty(lastPostalCode)) {
throw new NoPostalCodeException();
}
} else if (!TextUtils.equals(postalCode, lastPostalCode)) {
setLastPostalCode(context, postalCode);
return true;
}
return false;
}
/**
* Gets the last stored postal or zip code, which might be decided by {@link LocationUtils} or
* input by users.
*/
public static String getLastPostalCode(Context context) {
return TunerPreferences.getLastPostalCode(context);
}
/**
* Sets the last stored postal or zip code. This method will overwrite the value written by
* calling {@link #updatePostalCode(Context)}.
*/
public static void setLastPostalCode(Context context, String postalCode) {
Log.i(TAG, "Set Postal Code:" + postalCode);
TunerPreferences.setLastPostalCode(context, postalCode);
}
@Nullable
private static String getPostalCode(Context context) throws IOException, SecurityException {
Address address = LocationUtils.getCurrentAddress(context);
if (address != null) {
Log.i(TAG, "Current country and postal code is " + address.getCountryName() + ", "
+ address.getPostalCode());
if (TextUtils.equals(address.getCountryCode(), SUPPORTED_COUNTRY_CODE)) {
return address.getPostalCode();
}
}
return null;
}
/** An {@link java.lang.Exception} class to notify no valid postal or zip code is available. */
public static class NoPostalCodeException extends Exception {
public NoPostalCodeException() {
}
}
}
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