Add AndroidSupportMeWrapper

app/src/main/java/com/github/dfa/diaspora_android/activity/MainActivity.java

@@ -90,6 +90,7 @@ import com.github.dfa.diaspora_android.web.WebHelper;
 import com.github.dfa.diaspora_android.web.custom_tab.CustomTabActivityHelper;
 
 import net.gsantner.opoc.format.markdown.SimpleMarkdownParser;
+import net.gsantner.opoc.util.AndroidSupportMeWrapper;
 
 import java.io.IOException;
 
@@ -663,6 +664,7 @@ public class MainActivity extends ThemedActivity
     protected void onResume() {
         AppLog.v(this, "onResume()");
         super.onResume();
+        new AndroidSupportMeWrapper(this).mainOnResume();
         AppLog.v(this, "Register BroadcastReceivers");
         LocalBroadcastManager.getInstance(this).registerReceiver(brSetTitle, new IntentFilter(ACTION_UPDATE_TITLE_FROM_URL));
         LocalBroadcastManager.getInstance(this).registerReceiver(brOpenExternalLink, new IntentFilter(ACTION_OPEN_EXTERNAL_URL));

app/src/main/java/net/gsantner/opoc/preference/PropertyBackend.java

@@ -10,6 +10,8 @@
 #########################################################*/
 package net.gsantner.opoc.preference;
 
+import java.util.Calendar;
+import java.util.Date;
 import java.util.List;
 
 @SuppressWarnings({"UnusedReturnValue", "SpellCheckingInspection", "unused", "SameParameterValue"})

app/src/main/java/net/gsantner/opoc/preference/SharedPreferencesPropertyBackend.java

@@ -45,6 +45,7 @@ import android.text.TextUtils;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Calendar;
+import java.util.Date;
 import java.util.List;
 
 
@@ -523,6 +524,10 @@ public class SharedPreferencesPropertyBackend implements PropertyBackend<String,
         return this;
     }
 
+    public boolean contains(String key, final SharedPreferences... pref) {
+        return gp(pref).contains(key);
+    }
+
     /**
      * A method to determine if current hour is between begin and end.
      * This is especially useful for time-based light/dark mode
@@ -533,4 +538,37 @@ public class SharedPreferencesPropertyBackend implements PropertyBackend<String,
         int h = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
         return h >= begin && h <= end;
     }
+
+    /**
+     * Substract current datetime by given amount of days
+     */
+    public Date getDateOfDaysAgo(int days) {
+        return new Date(System.currentTimeMillis() - days * 1000 * 60 * 60 * 24);
+    }
+
+    /**
+     * Substract current datetime by given amount of days and check if the given date passed
+     */
+    public boolean didDaysPassedSince(Date date, int days) {
+        if (date == null || days < 0) {
+            return false;
+        }
+        return date.before(getDateOfDaysAgo(days));
+    }
+
+    public boolean afterDaysTrue(String key, int daysSinceLastTime, int firstTime, final SharedPreferences... pref) {
+        Date d = new Date(System.currentTimeMillis());
+        if (!contains(key)) {
+            d = getDateOfDaysAgo(daysSinceLastTime-firstTime);
+            setLong(key, d.getTime());
+            return firstTime < 1;
+        } else {
+            d = new Date(getLong(key, d.getTime()));
+        }
+        boolean trigger = didDaysPassedSince(d, daysSinceLastTime);
+        if (trigger) {
+            setLong(key, new Date(System.currentTimeMillis()).getTime());
+        }
+        return trigger;
+    }
 }

app/src/main/java/net/gsantner/opoc/util/AndroidSupportMeWrapper.java

@@ -0,0 +1,72 @@
+/*#######################################################
+ *
+ *   Maintained by Gregor Santner, 2018-
+ *   https://gsantner.net/
+ *
+ *   License of this file: Apache 2.0 (Commercial upon request)
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *     https://github.com/gsantner/opoc/#licensing
+ *
+#########################################################*/
+package net.gsantner.opoc.util;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.v7.app.AlertDialog;
+
+import com.github.dfa.diaspora_android.R;
+
+import net.gsantner.opoc.preference.SharedPreferencesPropertyBackend;
+
+public class AndroidSupportMeWrapper extends ActivityUtils {
+    private LocalSettingsImpl _localSettingsImpl;
+
+    public AndroidSupportMeWrapper(Activity activity) {
+        super(activity);
+        _localSettingsImpl = new LocalSettingsImpl(_context.getApplicationContext());
+    }
+
+    public void openPayPalDonationPage() {
+        String id = getPackageIdManifest();
+        String url = "https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=TVV24QBGMN23C&source=self.gsantner.net%2F" + id;
+        openWebpageInExternalBrowser(url);
+    }
+
+
+    public void openGeneralDonatePage() {
+        openWebpageInExternalBrowser(_context.getString(R.string.app_donate_url));
+    }
+
+    public void mainOnResume() {
+        if (_localSettingsImpl.all14dRequest()) {
+            AlertDialog.Builder dialog = new AlertDialog.Builder(_context);
+            dialog.setTitle(R.string.donate_)
+                    .setCancelable(false)
+                    .setNegativeButton(R.string.close, (dialogInterface, i) -> dialogInterface.dismiss())
+                    .setPositiveButton("PayPal", (dialogInterface, i) -> {
+                        openPayPalDonationPage();
+                        dialogInterface.dismiss();
+                    })
+                    .setNeutralButton(R.string.donate_, (dialogInterface, i) -> {
+                        openGeneralDonatePage();
+                        dialogInterface.dismiss();
+                    })
+                    .setMessage(R.string.do_you_like_this_project_want_donate_to_keep_alive);
+            dialog.show();
+        }
+    }
+
+    private class LocalSettingsImpl extends SharedPreferencesPropertyBackend {
+        private final SharedPreferences _prefCache;
+
+        public LocalSettingsImpl(Context _context) {
+            super(_context, "AndroidSupportMeWrapper.LocalSettingsImpl");
+            _prefCache = _context.getSharedPreferences("cache", Context.MODE_PRIVATE);
+        }
+
+        public boolean all14dRequest() {
+            return afterDaysTrue("all14dRequest", 14, 3);
+        }
+    }
+}

app/src/main/res/values/strings-not_translatable.xml

@@ -13,6 +13,9 @@
     <string name="tor" translatable="false">Tor</string>
     <string name="HTTP" translatable="false">HTTP</string>
 
+    <string name="donate_" translatable="false">@string/donate</string>
+    <string name="app_donate_url" translatable="false"><![CDATA[https://gsantner.net/supportme/?project=markor&source=inapp_supdon]]></string>
+
     <string name="action_compose_new_post" translatable="false">@string/new_post</string>
     <string name="search_alert_title" translatable="false">@string/search</string>
     <string name="http" translatable="false">http</string>

app/src/main/res/values/strings.xml

@@ -4,6 +4,8 @@
     <string name="open_navdrawer">Open navigation drawer</string>
     <string name="close_navdrawer">Close navigation drawer</string>
     <string name="reload">Reload</string>
+    <string name="close">Close</string>
+    <string name="cancel">Cancel</string>
 
     <!-- Common Words -->
     <string name="settings">Settings</string>
@@ -259,4 +261,7 @@
     <string name="pull_to_refresh">Pull to refresh</string>
     <string name="pulling_down_on_top_of_page_to_refresh">Pulling down on top of page to refresh.\nYou need to restart the app for changes to take effect.</string>
 
+    <string name="donate">Donate</string>
+    <string name="do_you_like_this_project_want_donate_to_keep_alive">Do you like this project? Do you want that it gets improved and problems fixed?\n\nDeveloping apps and writing related blog posts costs a lot of time! If you want to help so that the project can go on, please consider a small donation!\n\nThis project is developed in leisure time, completely for free and without any advertisements!</string>
+
 </resources>