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package eu.faircode.email;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.SharedPreferences;
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import android.net.Uri;
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import android.os.Bundle;
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import android.os.Handler;
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import android.preference.PreferenceManager;
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import android.provider.Settings;
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import android.util.Log;
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import android.view.View;
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import com.android.billingclient.api.BillingClient;
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import com.android.billingclient.api.BillingClientStateListener;
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import com.android.billingclient.api.BillingFlowParams;
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import com.android.billingclient.api.Purchase;
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import com.android.billingclient.api.PurchasesUpdatedListener;
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import com.google.android.material.snackbar.Snackbar;
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import java.security.NoSuchAlgorithmException;
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import java.util.List;
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import androidx.localbroadcastmanager.content.LocalBroadcastManager;
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abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedListener {
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private BillingClient billingClient = null;
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static final String ACTION_PURCHASE = BuildConfig.APPLICATION_ID + ".ACTION_PURCHASE";
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static final String ACTION_ACTIVATE_PRO = BuildConfig.APPLICATION_ID + ".ACTIVATE_PRO";
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (Helper.isPlayStoreInstall(this)) {
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billingClient = BillingClient.newBuilder(this).setListener(this).build();
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billingClient.startConnection(billingClientStateListener);
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}
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}
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@Override
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protected void onResume() {
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super.onResume();
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LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
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IntentFilter iff = new IntentFilter();
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iff.addAction(ACTION_PURCHASE);
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iff.addAction(ACTION_ACTIVATE_PRO);
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lbm.registerReceiver(receiver, iff);
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if (billingClient != null && billingClient.isReady())
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queryPurchases();
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}
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@Override
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protected void onPause() {
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super.onPause();
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LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
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lbm.unregisterReceiver(receiver);
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}
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@Override
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protected void onDestroy() {
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if (billingClient != null)
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billingClient.endConnection();
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super.onDestroy();
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}
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protected Intent getIntentPro() {
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if (Helper.isPlayStoreInstall(this))
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return null;
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try {
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Intent intent = new Intent(Intent.ACTION_VIEW);
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intent.setData(Uri.parse("https://email.faircode.eu/pro/?challenge=" + getChallenge()));
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return intent;
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} catch (NoSuchAlgorithmException ex) {
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Log.e(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
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return null;
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}
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}
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private String getChallenge() throws NoSuchAlgorithmException {
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String android_id = Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID);
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return Helper.sha256(android_id);
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}
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private String getResponse() throws NoSuchAlgorithmException {
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return Helper.sha256(BuildConfig.APPLICATION_ID + getChallenge());
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}
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BroadcastReceiver receiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (ACTION_PURCHASE.equals(intent.getAction()))
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onPurchase(intent);
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else if (ACTION_ACTIVATE_PRO.equals(intent.getAction()))
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onActivatePro(intent);
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}
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};
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private View getView() {
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return findViewById(android.R.id.content);
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}
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private void onPurchase(Intent intent) {
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if (Helper.isPlayStoreInstall(this)) {
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BillingFlowParams flowParams = BillingFlowParams.newBuilder()
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.setSku(BuildConfig.APPLICATION_ID + ".pro")
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.setType(BillingClient.SkuType.INAPP)
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.build();
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int responseCode = billingClient.launchBillingFlow(this, flowParams);
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String text = Helper.getBillingResponseText(responseCode);
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Log.i(Helper.TAG, "IAB launch billing flow response=" + text);
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if (responseCode != BillingClient.BillingResponse.OK)
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Snackbar.make(getView(), text, Snackbar.LENGTH_LONG).show();
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} else
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startActivity(getIntentPro());
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}
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private void onActivatePro(Intent intent) {
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try {
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Uri data = intent.getParcelableExtra("uri");
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String challenge = getChallenge();
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String response = data.getQueryParameter("response");
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Log.i(Helper.TAG, "Challenge=" + challenge);
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Log.i(Helper.TAG, "Response=" + response);
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String expected = getResponse();
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if (expected.equals(response)) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
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prefs.edit().putBoolean("pro", true).apply();
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Log.i(Helper.TAG, "Response valid");
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Snackbar.make(getView(), R.string.title_pro_valid, Snackbar.LENGTH_LONG).show();
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} else {
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Log.i(Helper.TAG, "Response invalid");
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Snackbar.make(getView(), R.string.title_pro_invalid, Snackbar.LENGTH_LONG).show();
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}
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intent.setData(null);
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setIntent(intent);
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} catch (NoSuchAlgorithmException ex) {
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Log.e(Helper.TAG, Log.getStackTraceString(ex));
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Helper.unexpectedError(this, ex);
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}
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}
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private BillingClientStateListener billingClientStateListener = new BillingClientStateListener() {
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private int backoff = 4; // seconds
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@Override
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public void onBillingSetupFinished(@BillingClient.BillingResponse int responseCode) {
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String text = Helper.getBillingResponseText(responseCode);
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Log.i(Helper.TAG, "IAB connected response=" + text);
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if (responseCode == BillingClient.BillingResponse.OK) {
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backoff = 4;
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queryPurchases();
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} else
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Snackbar.make(getView(), text, Snackbar.LENGTH_LONG).show();
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}
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@Override
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public void onBillingServiceDisconnected() {
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backoff *= 2;
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Log.i(Helper.TAG, "IAB disconnected retry in " + backoff + " s");
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new Handler().postDelayed(new Runnable() {
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@Override
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public void run() {
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if (!billingClient.isReady())
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billingClient.startConnection(billingClientStateListener);
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}
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}, backoff * 1000L);
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}
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};
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@Override
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public void onPurchasesUpdated(int responseCode, @android.support.annotation.Nullable List<Purchase> purchases) {
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String text = Helper.getBillingResponseText(responseCode);
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Log.i(Helper.TAG, "IAB purchases updated response=" + text);
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if (responseCode == BillingClient.BillingResponse.OK)
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checkPurchases(purchases);
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else
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Snackbar.make(getView(), text, Snackbar.LENGTH_LONG).show();
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}
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private void queryPurchases() {
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Purchase.PurchasesResult result = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
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String text = Helper.getBillingResponseText(result.getResponseCode());
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Log.i(Helper.TAG, "IAB query purchases response=" + text);
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if (result.getResponseCode() == BillingClient.BillingResponse.OK)
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checkPurchases(result.getPurchasesList());
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else
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Snackbar.make(getView(), text, Snackbar.LENGTH_LONG).show();
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}
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private void checkPurchases(List<Purchase> purchases) {
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if (purchases != null) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
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SharedPreferences.Editor editor = prefs.edit();
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if (prefs.getBoolean("play_store", true))
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editor.remove("pro");
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for (Purchase purchase : purchases) {
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Log.i(Helper.TAG, "IAB SKU=" + purchase.getSku());
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if ((BuildConfig.APPLICATION_ID + ".pro").equals(purchase.getSku())) {
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editor.putBoolean("pro", true);
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Log.i(Helper.TAG, "IAB pro features activated");
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}
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}
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editor.apply();
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}
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}
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}
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