in-app-purchase: pro-mode

android/app/build.gradle

@@ -35,7 +35,7 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.recyclerview:recyclerview:1.0.0'
@@ -45,7 +45,8 @@ dependencies {
     implementation 'com.google.android.material:material:1.0.0'
     implementation 'com.google.firebase:firebase-core:16.0.4'
     implementation 'com.google.firebase:firebase-messaging:17.3.4'
-    implementation 'com.google.android.gms:play-services-ads:17.0.0'
+    implementation 'com.google.android.gms:play-services-ads:17.1.0'
+    implementation 'com.android.billingclient:billing:1.2'
 
     implementation 'com.squareup.okhttp3:okhttp:3.10.0'
     implementation 'com.github.kenglxn.QRGen:android:2.5.0'

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/SCNApp.java

@@ -4,6 +4,7 @@ import android.app.Application;
 import android.content.Context;
 import android.widget.Toast;
 
+import com.android.billingclient.api.BillingClient;
 import com.blackforestbytes.simplecloudnotifier.view.AccountFragment;
 import com.blackforestbytes.simplecloudnotifier.view.MainActivity;
 import com.blackforestbytes.simplecloudnotifier.view.TabAdapter;

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/android/ThreadUtils.java

@@ -0,0 +1,23 @@
+package com.blackforestbytes.simplecloudnotifier.lib.android;
+
+import android.util.Log;
+
+public final class ThreadUtils
+{
+	public static void safeSleep(int millisMin, int millisMax)
+	{
+		safeSleep(millisMin + (int)(Math.random()*(millisMax-millisMin)));
+	}
+
+	public static void safeSleep(int millis)
+	{
+		try
+		{
+			Thread.sleep(millis);
+		}
+		catch (InterruptedException e)
+		{
+			Log.d("ThreadUtils", e.toString());
+		}
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/collections/CollectionHelper.java

@@ -0,0 +1,38 @@
+package com.blackforestbytes.simplecloudnotifier.lib.collections;
+
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func1to1;
+
+import java.util.*;
+
+public final class CollectionHelper
+{
+	public static <T, C> List<T> unique(List<T> input, Func1to1<T, C> mapping)
+	{
+		List<T> output = new ArrayList<>(input.size());
+
+		HashSet<C> seen = new HashSet<>();
+
+		for (T v : input) if (seen.add(mapping.invoke(v))) output.add(v);
+
+		return output;
+	}
+
+	public static <T> List<T> sort(List<T> input, Comparator<T> comparator)
+	{
+		List<T> output = new ArrayList<>(input);
+		Collections.sort(output, comparator);
+		return output;
+	}
+
+	public static <T, U extends Comparable<U>> List<T> sort(List<T> input, Func1to1<T, U> mapper)
+	{
+		return sort(input, mapper, 1);
+	}
+
+	public static <T, U extends Comparable<U>> List<T> sort(List<T> input, Func1to1<T, U> mapper, int sortMod)
+	{
+		List<T> output = new ArrayList<>(input);
+		Collections.sort(output, (o1, o2) -> sortMod * mapper.invoke(o1).compareTo(mapper.invoke(o2)));
+		return output;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/IntRange.java

@@ -0,0 +1,14 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class IntRange
+{
+	private int Start;
+	public int Start() { return Start; }
+
+	private int End;
+	public int End() { return End; }
+
+	public IntRange(int s, int e) { Start = s; End = e; }
+
+	private IntRange() {  }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/NInt.java

@@ -0,0 +1,10 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class NInt
+{
+	public int Value;
+
+	public NInt(int v) { Value = v; }
+
+	private NInt() {  }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Nothing.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public final class Nothing
+{
+	public final static Nothing Inst = new Nothing();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple1.java

@@ -0,0 +1,11 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple1<T1>
+{
+	public final T1 Item1;
+
+	public Tuple1(T1 i1)
+	{
+		Item1 = i1;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple2.java

@@ -0,0 +1,13 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple2<T1, T2>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+
+	public Tuple2(T1 i1, T2 i2)
+	{
+		Item1 = i1;
+		Item2 = i2;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple3.java

@@ -0,0 +1,15 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple3<T1, T2, T3>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+	public final T3 Item3;
+
+	public Tuple3(T1 i1, T2 i2, T3 i3)
+	{
+		Item1 = i1;
+		Item2 = i2;
+		Item3 = i3;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple4.java

@@ -0,0 +1,17 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple4<T1, T2, T3, T4>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+	public final T3 Item3;
+	public final T4 Item4;
+
+	public Tuple4(T1 i1, T2 i2, T3 i3, T4 i4)
+	{
+		Item1 = i1;
+		Item2 = i2;
+		Item3 = i3;
+		Item4 = i4;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to0.java

@@ -0,0 +1,9 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func0to0 {
+
+	Func0to0 EMPTY = ()->{};
+
+	void invoke();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func0to1<TResult> {
+	TResult invoke();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to1WithIOException.java

@@ -0,0 +1,8 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+import java.io.IOException;
+
+@FunctionalInterface
+public interface Func0to1WithIOException<TResult> {
+	TResult invoke() throws IOException;
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func1to0.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func1to0<TInput1> {
+	void invoke(TInput1 value);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func1to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func1to1<TInput1, TResult> {
+	TResult invoke(TInput1 value);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func2to0.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func2to0<TInput1, TInput2> {
+	void invoke(TInput1 value1, TInput2 value2);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func2to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func2to1<TInput1, TInput2, TResult> {
+	TResult invoke(TInput1 value1, TInput2 value2);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/string/CompactJsonFormatter.java

@@ -0,0 +1,231 @@
+package com.blackforestbytes.simplecloudnotifier.lib.string;
+
+// from MonoSAMFramework.Portable.DebugTools.CompactJsonFormatter
+public class CompactJsonFormatter
+{
+	private static final String INDENT_STRING = "  ";
+	
+	public static String formatJSON(String str, int maxIndent)
+	{
+		int indent = 0;
+		boolean quoted = false;
+		StringBuilder sb = new StringBuilder();
+		char last = ' ';
+		for (int i = 0; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '\r':
+				case '\n':
+					break;
+				case '{':
+				case '[':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						indent++;
+						if (indent >= maxIndent) break;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+						last = ' ';
+					}
+					break;
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (indent + 1 >= maxIndent) { sb.append(ch); break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					sb.append(ch);
+					last = ch;
+					break;
+				case '"':
+					sb.append(ch);
+					last = ch;
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+				case ',':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (indent >= maxIndent) { sb.append(' '); last = ' '; break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					break;
+				case ':':
+					sb.append(ch);
+					last = ch;
+					if (!quoted) { sb.append(" "); last = ' '; }
+					break;
+				case ' ':
+				case '\t':
+					if (quoted)
+					{
+						sb.append(ch);
+						last = ch;
+					}
+					else if (last != ' ')
+					{
+						sb.append(' ');
+						last = ' ';
+					}
+					break;
+				default:
+					sb.append(ch);
+					last = ch;
+					break;
+			}
+		}
+		return sb.toString();
+	}
+
+	public static String compressJson(String str, int compressionLevel)
+	{
+		int indent = 0;
+		boolean quoted = false;
+		StringBuilder sb = new StringBuilder();
+		char last = ' ';
+		int compress = 0;
+		for (int i = 0; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '\r':
+				case '\n':
+					break;
+				case '{':
+				case '[':
+
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (compress == 0 && getJsonDepth(str, i) <= compressionLevel)
+							compress = 1;
+						else if (compress > 0)
+							compress++;
+
+						indent++;
+						if (compress > 0) break;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+						last = ' ';
+					}
+					break;
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (compress > 0) { compress--; sb.append(ch); break; }
+						compress--;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					sb.append(ch);
+					last = ch;
+					break;
+				case '"':
+					sb.append(ch);
+					last = ch;
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+				case ',':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (compress > 0) { sb.append(' '); last = ' '; break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					break;
+				case ':':
+					sb.append(ch);
+					last = ch;
+					if (!quoted) { sb.append(" "); last = ' '; }
+					break;
+				case ' ':
+				case '\t':
+					if (quoted)
+					{
+						sb.append(ch);
+						last = ch;
+					}
+					else if (last != ' ')
+					{
+						sb.append(' ');
+						last = ' ';
+					}
+					break;
+				default:
+					sb.append(ch);
+					last = ch;
+					break;
+			}
+		}
+		return sb.toString();
+	}
+
+	public static int getJsonDepth(String str, int i)
+	{
+		int maxindent = 0;
+		int indent = 0;
+		boolean quoted = false;
+		for (; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '{':
+				case '[':
+					if (!quoted)
+					{
+						indent++;
+						maxindent = Math.max(indent, maxindent);
+					}
+					break;
+
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (indent <= 0) return maxindent;
+					}
+					break;
+
+				case '"':
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+
+				default:
+					break;
+			}
+		}
+		return maxindent;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/string/Str.java

@@ -0,0 +1,98 @@
+package com.blackforestbytes.simplecloudnotifier.lib.string;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func1to1;
+
+import java.text.MessageFormat;
+import java.util.List;
+
+public class Str
+{
+	public final static String Empty = "";
+
+	public static String format(String fmt, Object... data)
+	{
+		return MessageFormat.format(fmt, data);
+	}
+
+	public static String rformat(int fmtResId, Object... data)
+	{
+		Context inst = SCNApp.getContext();
+		if (inst == null)
+		{
+			Log.e("StringFormat", "rformat::NoInstance --> inst==null for" + fmtResId);
+			return "?ERR?";
+		}
+
+		return MessageFormat.format(inst.getResources().getString(fmtResId), data);
+	}
+
+	public static String firstLine(String content)
+	{
+		int idx = content.indexOf('\n');
+		if (idx == -1) return content;
+
+		if (idx == 0) return Str.Empty;
+
+		if (content.charAt(idx-1) == '\r') return content.substring(0, idx-1);
+
+		return content.substring(0, idx);
+	}
+
+	public static boolean isNullOrWhitespace(String str)
+	{
+		return str == null || str.length() == 0 || str.trim().length() == 0;
+	}
+
+	public static boolean isNullOrEmpty(String str)
+	{
+		return str == null || str.length() == 0;
+	}
+
+	public static boolean equals(String a, String b)
+	{
+		if (a == null) return (b == null);
+		return a.equals(b);
+	}
+
+	public static String join(String sep, List<String> list)
+	{
+		StringBuilder b = new StringBuilder();
+		boolean first = true;
+		for (String v : list)
+		{
+			if (!first) b.append(sep);
+			b.append(v);
+			first = false;
+		}
+		return b.toString();
+	}
+
+	public static <T> String join(String sep, List<T> list, Func1to1<T, String> map)
+	{
+		StringBuilder b = new StringBuilder();
+		boolean first = true;
+		for (T v : list)
+		{
+			if (!first) b.append(sep);
+			b.append(map.invoke(v));
+			first = false;
+		}
+		return b.toString();
+	}
+
+	public static Integer tryParseToInt(String s)
+	{
+		try
+		{
+			return Integer.parseInt(s);
+		}
+		catch (Exception e)
+		{
+			return null;
+		}
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/SCNSettings.java

@@ -6,7 +6,9 @@ import android.content.SharedPreferences;
 import android.util.Log;
 import android.view.View;
 
+import com.android.billingclient.api.Purchase;
 import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.google.firebase.iid.FirebaseInstanceId;
 
 public class SCNSettings
@@ -36,6 +38,10 @@ public class SCNSettings
     public String fcm_token_local;
     public String fcm_token_server;
 
+    public String  promode_token;
+    public boolean promode_local;
+    public boolean promode_server;
+
     // ------------------------------------------------------------
 
     public boolean Enabled = true;
@@ -57,6 +63,9 @@ public class SCNSettings
         user_key         = sharedPref.getString("user_key",         "");
         fcm_token_local  = sharedPref.getString("fcm_token_local",  "");
         fcm_token_server = sharedPref.getString("fcm_token_server", "");
+        promode_local    = sharedPref.getBoolean("promode_local",   false);
+        promode_server   = sharedPref.getBoolean("promode_server",  false);
+        promode_token    = sharedPref.getString("promode_token",    "");
 
         Enabled                     = sharedPref.getBoolean("app_enabled",  Enabled);
         LocalCacheSize              = sharedPref.getInt("local_cache_size", LocalCacheSize);
@@ -151,10 +160,12 @@ public class SCNSettings
         {
             fcm_token_local = token;
             save();
-            ServerCommunication.register(fcm_token_local, loader);
+            ServerCommunication.register(fcm_token_local, loader, promode_local, promode_token);
+            updateProState(loader);
         }
     }
 
+    // called at app start
     public void work(Activity a)
     {
         FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(a, instanceIdResult ->
@@ -166,8 +177,11 @@ public class SCNSettings
         {
             if (isConnected()) ServerCommunication.info(user_id, user_key, null);
         });
+
+        updateProState(null);
     }
 
+    // reset account key
     public void reset(View loader)
     {
         if (!isConnected()) return;
@@ -175,23 +189,50 @@ public class SCNSettings
         ServerCommunication.update(user_id, user_key, loader);
     }
 
+    // refresh account data
     public void refresh(View loader, Activity a)
     {
         if (isConnected())
         {
             ServerCommunication.info(user_id, user_key, loader);
+            if (promode_server != promode_local)
+            {
+                updateProState(loader);
+            }
         }
         else
         {
+            // get token then register
             FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(a, instanceIdResult ->
             {
                 String newToken = instanceIdResult.getToken();
                 Log.e("FB::GetInstanceId", newToken);
-                SCNSettings.inst().setServerToken(newToken, loader);
+                SCNSettings.inst().setServerToken(newToken, loader); // does register in here
             }).addOnCompleteListener(r ->
             {
-                if (isConnected()) ServerCommunication.info(user_id, user_key, null);
+                if (isConnected()) ServerCommunication.info(user_id, user_key, null); // info again for safety
             });
         }
     }
+
+    public void updateProState(View loader)
+    {
+        Purchase purch = IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE);
+        boolean promode_real = (purch != null);
+
+        if (promode_real != promode_local || promode_real != promode_server)
+        {
+            promode_local = promode_real;
+
+            promode_token = promode_real ? purch.getPurchaseToken() : "";
+            updateProStateOnServer(loader);
+        }
+    }
+
+    public void updateProStateOnServer(View loader)
+    {
+        if (!isConnected()) return;
+
+        ServerCommunication.upgrade(user_id, user_key, loader, promode_local, promode_token);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/ServerCommunication.java

@@ -9,6 +9,7 @@ import org.json.JSONObject;
 import org.json.JSONTokener;
 
 import java.io.IOException;
+import java.net.URLEncoder;
 
 import okhttp3.Call;
 import okhttp3.Callback;
@@ -25,12 +26,12 @@ public class ServerCommunication
 
     private ServerCommunication(){ throw new Error("no."); }
 
-    public static void register(String token, View loader)
+    public static void register(String token, View loader, boolean pro, String pro_token)
     {
         try
         {
             Request request = new Request.Builder()
-                    .url(BASE_URL + "register.php?fcm_token="+token)
+                    .url(BASE_URL + "register.php?fcm_token=" + token + "&pro=" + pro + "&pro_token=" + URLEncoder.encode(pro_token, "utf-8"))
                     .build();
 
             client.newCall(request).enqueue(new Callback()
@@ -67,6 +68,7 @@ public class ServerCommunication
                         SCNSettings.inst().fcm_token_server = token;
                         SCNSettings.inst().quota_curr       = json.getInt("quota");
                         SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().promode_server   = json.getBoolean("is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
@@ -132,6 +134,7 @@ public class ServerCommunication
                         SCNSettings.inst().fcm_token_server = token;
                         SCNSettings.inst().quota_curr       = json.getInt("quota");
                         SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().promode_server   = json.getBoolean("is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
@@ -191,6 +194,7 @@ public class ServerCommunication
                         SCNSettings.inst().user_key         = json.getString("user_key");
                         SCNSettings.inst().quota_curr       = json.getInt("quota");
                         SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().promode_server   = json.getBoolean("is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
@@ -250,6 +254,7 @@ public class ServerCommunication
                         SCNSettings.inst().user_id        = json.getInt("user_id");
                         SCNSettings.inst().quota_curr     = json.getInt("quota");
                         SCNSettings.inst().quota_max      = json.getInt("quota_max");
+                        SCNSettings.inst().promode_server = json.getBoolean("is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
@@ -270,4 +275,63 @@ public class ServerCommunication
             SCNApp.showToast("Communication with server failed", 4000);
         }
     }
+
+    public static void upgrade(int id, String key, View loader, boolean pro, String pro_token)
+    {
+        try
+        {
+            SCNApp.runOnUiThread(() -> { if (loader != null) loader.setVisibility(View.GONE); });
+
+            Request request = new Request.Builder()
+                    .url(BASE_URL + "upgrade.php?user_id=" + id + "&user_key=" + key + "&pro=" + pro + "&pro_token=" + URLEncoder.encode(pro_token, "utf-8"))
+                    .build();
+
+            client.newCall(request).enqueue(new Callback() {
+                @Override
+                public void onFailure(Call call, IOException e) {
+                    e.printStackTrace();
+                    SCNApp.showToast("Communication with server failed", 4000);
+                }
+
+                @Override
+                public void onResponse(Call call, Response response) {
+                    try (ResponseBody responseBody = response.body()) {
+                        if (!response.isSuccessful())
+                            throw new IOException("Unexpected code " + response);
+                        if (responseBody == null) throw new IOException("No response");
+
+                        String r = responseBody.string();
+                        Log.d("Server::Response", r);
+
+                        JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
+
+                        if (!json.getBoolean("success")) {
+                            SCNApp.showToast(json.getString("message"), 4000);
+                            return;
+                        }
+
+                        SCNSettings.inst().user_id          = json.getInt("user_id");
+                        SCNSettings.inst().user_key         = json.getString("user_key");
+                        SCNSettings.inst().quota_curr       = json.getInt("quota");
+                        SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().promode_server   = json.getBoolean("is_pro");
+                        SCNSettings.inst().save();
+
+                        SCNApp.refreshAccountTab();
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                        SCNApp.showToast("Communication with server failed", 4000);
+                    } finally {
+                        SCNApp.runOnUiThread(() -> { if (loader != null) loader.setVisibility(View.GONE); });
+                    }
+                }
+            });
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+            SCNApp.showToast("Communication with server failed", 4000);
+        }
+    }
+
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/service/IABService.java

@@ -0,0 +1,195 @@
+package com.blackforestbytes.simplecloudnotifier.service;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.Log;
+import android.widget.Toast;
+
+import com.android.billingclient.api.BillingClient;
+import com.android.billingclient.api.BillingClientStateListener;
+import com.android.billingclient.api.BillingFlowParams;
+import com.android.billingclient.api.Purchase;
+import com.android.billingclient.api.PurchasesUpdatedListener;
+import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func0to0;
+import com.blackforestbytes.simplecloudnotifier.lib.string.Str;
+import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.view.MainActivity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.Nullable;
+
+import static androidx.constraintlayout.widget.Constraints.TAG;
+
+public class IABService implements PurchasesUpdatedListener
+{
+    public static final String IAB_PRO_MODE = "scn.pro.tier1";
+
+    private final static Object _lock = new Object();
+    private static IABService _inst = null;
+    public static IABService inst()
+    {
+        synchronized (_lock)
+        {
+            if (_inst != null) return _inst;
+            throw new Error("IABService == null");
+        }
+    }
+    public static void startup(MainActivity a)
+    {
+        synchronized (_lock)
+        {
+            _inst = new IABService(a);
+        }
+    }
+
+    private BillingClient client;
+    private boolean isServiceConnected;
+    private final List<Purchase> purchases = new ArrayList<>();
+
+    public IABService(Context c)
+    {
+        client = BillingClient
+                .newBuilder(c)
+                .setListener(this)
+                .build();
+
+        startServiceConnection(this::queryPurchases, false);
+    }
+
+    public void queryPurchases()
+    {
+        Func0to0 queryToExecute = () ->
+        {
+            long time = System.currentTimeMillis();
+            Purchase.PurchasesResult purchasesResult = client.queryPurchases(BillingClient.SkuType.INAPP);
+            Log.i(TAG, "Querying purchases elapsed time: " + (System.currentTimeMillis() - time) + "ms");
+
+            if (purchasesResult.getResponseCode() == BillingClient.BillingResponse.OK)
+            {
+                for (Purchase p : purchasesResult.getPurchasesList())
+                {
+                    handlePurchase(p);
+                }
+
+                boolean newProMode = getPurchaseCached(IAB_PRO_MODE) != null;
+                if (newProMode != SCNSettings.inst().promode_local)
+                {
+                    refreshProModeListener();
+                }
+            }
+            else
+            {
+                Log.w(TAG, "queryPurchases() got an error response code: " + purchasesResult.getResponseCode());
+            }
+        };
+
+        executeServiceRequest(queryToExecute, false);
+    }
+
+    public void purchase(Activity a, String id)
+    {
+        executeServiceRequest(() ->
+        {
+            BillingFlowParams flowParams = BillingFlowParams
+                    .newBuilder()
+                    .setSku(id)
+                    .setType(BillingClient.SkuType.INAPP) // SkuType.SUB for subscription
+                    .build();
+            client.launchBillingFlow(a, flowParams);
+        }, true);
+    }
+
+    private void executeServiceRequest(Func0to0 runnable, final boolean userRequest) {
+        if (isServiceConnected)
+        {
+            runnable.invoke();
+        }
+        else
+        {
+            // If billing service was disconnected, we try to reconnect 1 time.
+            // (feel free to introduce your retry policy here).
+            startServiceConnection(runnable, userRequest);
+        }
+    }
+    public void destroy()
+    {
+        if (client != null && client.isReady()) {
+            client.endConnection();
+            client = null;
+            isServiceConnected = false;
+        }
+    }
+
+    @Override
+    public void onPurchasesUpdated(int responseCode, @Nullable List<Purchase> purchases)
+    {
+        if (responseCode == BillingClient.BillingResponse.OK && purchases != null)
+        {
+            for (Purchase purchase : purchases)
+            {
+                handlePurchase(purchase);
+            }
+        }
+        else if (responseCode == BillingClient.BillingResponse.ITEM_ALREADY_OWNED && purchases != null)
+        {
+            for (Purchase purchase : purchases)
+            {
+                handlePurchase(purchase);
+            }
+        }
+    }
+
+    private void handlePurchase(Purchase purchase)
+    {
+        Log.d(TAG, "Got a verified purchase: " + purchase);
+
+        purchases.add(purchase);
+
+        refreshProModeListener();
+    }
+
+    private void refreshProModeListener() {
+        MainActivity ma = SCNApp.getMainActivity();
+        if (ma != null) ma.adpTabs.tab3.updateProState();
+        if (ma != null) ma.adpTabs.tab1.updateProState();
+        SCNSettings.inst().updateProState(null);
+    }
+
+    public void startServiceConnection(final Func0to0 executeOnSuccess, final boolean userRequest)
+    {
+        client.startConnection(new BillingClientStateListener()
+        {
+            @Override
+            public void onBillingSetupFinished(@BillingClient.BillingResponse int billingResponseCode)
+            {
+                if (billingResponseCode == BillingClient.BillingResponse.OK)
+                {
+                    isServiceConnected = true;
+                    if (executeOnSuccess != null) executeOnSuccess.invoke();
+                }
+                else
+                {
+                    if (userRequest) SCNApp.showToast("Could not connect to google services", Toast.LENGTH_SHORT);
+                }
+            }
+
+            @Override
+            public void onBillingServiceDisconnected() {
+                isServiceConnected = false;
+            }
+        });
+    }
+
+    public Purchase getPurchaseCached(String id)
+    {
+        for (Purchase p : purchases)
+        {
+            if (Str.equals(p.getSku(), id)) return p;
+        }
+
+        return null;
+    }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/service/NotificationService.java

@@ -6,8 +6,6 @@ import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
-import android.graphics.Color;
-import android.media.AudioAttributes;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Build;

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/MainActivity.java

@@ -1,17 +1,15 @@
 package com.blackforestbytes.simplecloudnotifier.view;
 
-import android.net.Uri;
 import android.os.Bundle;
 
 import com.blackforestbytes.simplecloudnotifier.R;
 import com.blackforestbytes.simplecloudnotifier.SCNApp;
 import com.blackforestbytes.simplecloudnotifier.model.CMessageList;
 import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.blackforestbytes.simplecloudnotifier.service.NotificationService;
 import com.google.android.material.tabs.TabLayout;
 
-import org.jetbrains.annotations.NotNull;
-
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.viewpager.widget.PagerAdapter;
@@ -42,7 +40,7 @@ public class MainActivity extends AppCompatActivity
         tabLayout.setupWithViewPager(viewPager);
 
         SCNApp.register(this);
-
+        IABService.startup(this);
         SCNSettings.inst().work(this);
     }
 
@@ -51,6 +49,16 @@ public class MainActivity extends AppCompatActivity
     {
         super.onStop();
 
+        SCNSettings.inst().save();
         CMessageList.inst().fullSave();
     }
+
+    @Override
+    protected void onDestroy()
+    {
+        super.onDestroy();
+
+        CMessageList.inst().fullSave();
+        IABService.inst().destroy();
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/NotificationsFragment.java

@@ -6,6 +6,8 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.blackforestbytes.simplecloudnotifier.R;
+import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.google.android.gms.ads.doubleclick.PublisherAdRequest;
 import com.google.android.gms.ads.doubleclick.PublisherAdView;
 
@@ -16,6 +18,8 @@ import androidx.recyclerview.widget.RecyclerView;
 
 public class NotificationsFragment extends Fragment
 {
+    private PublisherAdView adView;
+
     public NotificationsFragment()
     {
         // Required empty public constructor
@@ -30,11 +34,17 @@ public class NotificationsFragment extends Fragment
         rvMessages.setLayoutManager(new LinearLayoutManager(this.getContext(), RecyclerView.VERTICAL, true));
         rvMessages.setAdapter(new MessageAdapter(v.findViewById(R.id.tvNoElements)));
 
-        PublisherAdView mPublisherAdView = v.findViewById(R.id.adBanner);
+        adView = v.findViewById(R.id.adBanner);
         PublisherAdRequest adRequest = new PublisherAdRequest.Builder().build();
-        mPublisherAdView.loadAd(adRequest);
+        adView.loadAd(adRequest);
+
+        adView.setVisibility(SCNSettings.inst().promode_local ? View.GONE : View.VISIBLE);
 
         return v;
     }
 
+    public void updateProState()
+    {
+        adView.setVisibility(IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE) != null ? View.GONE : View.VISIBLE);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/SettingsFragment.java

@@ -1,6 +1,5 @@
 package com.blackforestbytes.simplecloudnotifier.view;
 
-import android.app.NotificationManager;
 import android.content.Context;
 import android.media.AudioManager;
 import android.net.Uri;
@@ -16,8 +15,10 @@ import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TextView;
 
+import com.android.billingclient.api.Purchase;
 import com.blackforestbytes.simplecloudnotifier.R;
 import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.blackforestbytes.simplecloudnotifier.service.NotificationService;
 
 import org.jetbrains.annotations.NotNull;
@@ -33,6 +34,8 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
     private Switch    prefAppEnabled;
     private Spinner   prefLocalCacheSize;
     private Button    prefUpgradeAccount;
+    private TextView  prefUpgradeAccount_msg;
+    private TextView  prefUpgradeAccount_info;
 
     private Switch    prefMsgLowEnableSound;
     private TextView  prefMsgLowRingtone_value;
@@ -85,6 +88,8 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
         prefAppEnabled                = v.findViewById(R.id.prefAppEnabled);
         prefLocalCacheSize            = v.findViewById(R.id.prefLocalCacheSize);
         prefUpgradeAccount            = v.findViewById(R.id.prefUpgradeAccount);
+        prefUpgradeAccount_msg        = v.findViewById(R.id.prefUpgradeAccount2);
+        prefUpgradeAccount_info       = v.findViewById(R.id.prefUpgradeAccount_info);
 
         prefMsgLowEnableSound         = v.findViewById(R.id.prefMsgLowEnableSound);
         prefMsgLowRingtone_value      = v.findViewById(R.id.prefMsgLowRingtone_value);
@@ -122,6 +127,10 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
 
         if (prefAppEnabled.isChecked() != s.Enabled) prefAppEnabled.setChecked(s.Enabled);
 
+        prefUpgradeAccount.setVisibility(     SCNSettings.inst().promode_local ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_info.setVisibility(SCNSettings.inst().promode_local ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_msg.setVisibility( SCNSettings.inst().promode_local ? View.VISIBLE : View.GONE   );
+
         ArrayAdapter<Integer> plcsa = new ArrayAdapter<>(c, android.R.layout.simple_spinner_item, SCNSettings.CHOOSABLE_CACHE_SIZES);
         plcsa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
         prefLocalCacheSize.setAdapter(plcsa);
@@ -197,7 +206,16 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
 
     private void onUpgradeAccount()
     {
-        //TODO
+        IABService.inst().purchase(getActivity(), IABService.IAB_PRO_MODE);
+    }
+
+    public void updateProState()
+    {
+        Purchase p = IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE);
+
+        prefUpgradeAccount.setVisibility(     p != null ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_info.setVisibility(p != null ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_msg.setVisibility( p != null ? View.VISIBLE : View.GONE   );
     }
 
     private int getCacheSizeIndex(int value)

android/app/src/main/res/layout/fragment_settings.xml

@@ -96,7 +96,8 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
+                <LinearLayout
+                    android:orientation="vertical"
                     android:layout_marginStart="4dp"
                     android:layout_marginEnd="4dp"
                     android:layout_width="match_parent"
@@ -107,12 +108,25 @@
                         android:id="@+id/prefUpgradeAccount"
                         android:text="@string/str_upgrade_account"
                         android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
+                        android:layout_height="wrap_content" />
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    <TextView
+                        android:id="@+id/prefUpgradeAccount_info"
+                        android:textAlignment="center"
+                        android:text="@string/str_promode_info"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                    <TextView
+                        android:id="@+id/prefUpgradeAccount2"
+                        android:textColor="#FF4D00"
+                        android:textStyle="bold"
+                        android:textAlignment="center"
+                        android:text="@string/str_promode"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                </LinearLayout>
 
             </LinearLayout>
 

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

@@ -28,4 +28,6 @@
     <string name="str_ledcolor">Notification light color</string>
     <string name="str_enable_vibration">Enable notification vibration</string>
     <string name="str_upgrade_account">Upgrade account</string>
+    <string name="str_promode">Thank you for supporting the app and using the pro mode</string>
+    <string name="str_promode_info">Increase your daily quota, remove the ad banner and support the developer (that\'s me)</string>
 </resources>

android/build.gradle

@@ -8,7 +8,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.2.1'
-        classpath 'com.google.gms:google-services:4.0.1'
+        classpath 'com.google.gms:google-services:4.2.0'
     }
 }
 

web/.gitignore

@@ -181,3 +181,4 @@ $RECYCLE.BIN/
 #################
 
 config.php
+.verify_accesstoken

web/info.php

@@ -15,7 +15,7 @@ $user_key  = $INPUT['user_key'];
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, is_pro, quota_day FROM users WHERE user_id = :uid LIMIT 1');
 $stmt->execute(['uid' => $user_id]);
 
 $datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
@@ -27,7 +27,7 @@ if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'er
 if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'errid'=>204, 'message' => 'Authentification failed']));
 
 $quota = $data['quota_today'];
-$quota_max = $data['quota_max'];
+$is_pro = $data['is_pro'];
 
 if ($data['quota_day'] === null || $data['quota_day'] !== date("Y-m-d")) $quota=0;
 
@@ -36,7 +36,8 @@ echo json_encode(
 	'success'   => true,
 	'user_id'   => $user_id,
 	'quota'     => $quota,
-	'quota_max'=> $quota_max,
+	'quota_max' => Statics::quota_max($is_pro),
+	'is_pro'    => $is_pro,
 	'message'   => 'ok'
 ]);
 return 0;

web/model.php

@@ -6,6 +6,8 @@ class Statics
 {
 	public static $DB = NULL;
 	public static $CFG = NULL;
+
+	public static function quota_max($is_pro) { return $is_pro ? 1000 : 100; }
 }
 
 function getConfig()
@@ -15,6 +17,34 @@ function getConfig()
 	return Statics::$CFG = require "config.php";
 }
 
+function reportError($msg)
+{
+	$subject = "SCN_Server has encountered an Error at " . date("Y-m-d H:i:s") . "] ";
+
+	$content = "";
+
+	$content .= 'HTTP_HOST: '            . ParamServerOrUndef('HTTP_HOST')            . "\n";
+	$content .= 'REQUEST_URI: '          . ParamServerOrUndef('REQUEST_URI')          . "\n";
+	$content .= 'TIME: '                 . date('Y-m-d H:i:s')                        . "\n";
+	$content .= 'REMOTE_ADDR: '          . ParamServerOrUndef('REMOTE_ADDR')          . "\n";
+	$content .= 'HTTP_X_FORWARDED_FOR: ' . ParamServerOrUndef('HTTP_X_FORWARDED_FOR') . "\n";
+	$content .= 'HTTP_USER_AGENT: '      . ParamServerOrUndef('HTTP_USER_AGENT')      . "\n";
+	$content .= 'MESSAGE:'               . "\n" . $msg                                . "\n";
+	$content .= '$_GET:'                 . "\n" . print_r($_GET, true)                . "\n";
+	$content .= '$_POST:'                . "\n" . print_r($_POST, true)               . "\n";
+	$content .= '$_FILES:'               . "\n" . print_r($_FILES, true)              . "\n";
+
+	if (getConfig()['error_reporting']['send-mail'])sendMail($subject, $content, getConfig()['error_reporting']['email-error-target'], getConfig()['error_reporting']['email-error-sender']);
+}
+
+/**
+ * @param string $idx
+ * @return string
+ */
+function ParamServerOrUndef($idx) {
+	return isset($_SERVER[$idx]) ? $_SERVER[$idx] : 'NOT_SET';
+}
+
 function getDatabase()
 {
 	if (Statics::$DB !== NULL) return Statics::$DB;
@@ -57,6 +87,13 @@ function generateRandomAuthKey()
 	return $random;
 }
 
+/**
+ * @param $url
+ * @param $body
+ * @param $header
+ * @return array|object|string
+ * @throws \Httpful\Exception\ConnectionErrorException
+ */
 function sendPOST($url, $body, $header)
 {
 	$builder = \Httpful\Request::post($url);
@@ -71,3 +108,68 @@ function sendPOST($url, $body, $header)
 
 	return $response->body;
 }
+
+function verifyOrderToken($tok)
+{
+	// https://developers.google.com/android-publisher/api-ref/purchases/products/get
+
+	try
+	{
+		$package  = getConfig()['verify_api']['package_name'];
+		$product  = getConfig()['verify_api']['product_id'];
+		$acctoken = getConfig()['verify_api']['accesstoken'];
+
+		if ($acctoken == '') $acctoken = refreshVerifyToken();
+
+		$url = 	'https://www.googleapis.com/androidpublisher/v3/applications/'.$package.'/purchases/products/'.$product.'/tokens/'.$tok.'?access_token='.$acctoken;
+
+		$json = sendPOST($url, "", []);
+		$obj = json_decode($json);
+
+		if ($obj === null || $obj === false)
+		{
+			reportError('verify-token returned NULL');
+			return false;
+		}
+
+		if (isset($obj['error']) && isset($obj['error']['code']) && $obj['error']['code'] == 401) // "Invalid Credentials" -- refresh acces_token
+		{
+			$acctoken = refreshVerifyToken();
+
+			$url = 	'https://www.googleapis.com/androidpublisher/v3/applications/'.$package.'/purchases/products/'.$product.'/tokens/'.$tok.'?access_token='.$acctoken;
+			$json = sendPOST($url, "", []);
+			$obj = json_decode($json);
+
+			if ($obj === null || $obj === false)
+			{
+				reportError('verify-token returned NULL');
+				return false;
+			}
+		}
+
+		if (isset($obj['purchaseState']) && $obj['purchaseState'] === 0) return true;
+
+		return false;
+	}
+	catch (Exception $e)
+	{
+		reportError("VerifyOrder token threw exception: " . $e . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString());
+		return false;
+	}
+}
+
+/** @throws Exception */
+function refreshVerifyToken()
+{
+	$url = 	'https://accounts.google.com/o/oauth2/token'.
+			'?grant_type=refresh_token'.
+			'&refresh_token='.getConfig()['verify_api']['refreshtoken'].
+			'&client_id='.getConfig()['verify_api']['clientid'].
+			'&client_secret='.getConfig()['verify_api']['clientsecret'];
+
+	$json = sendPOST($url, "", []);
+	$obj = json_decode($json);
+	file_put_contents('.verify_accesstoken', $obj['access_token']);
+
+	return $obj->access_token;
+}

web/register.php

@@ -5,14 +5,23 @@ include_once 'model.php';
 $INPUT = array_merge($_GET, $_POST);
 
 if (!isset($INPUT['fcm_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[fcm_token]]']));
+if (!isset($INPUT['pro']))       die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro]]']));
+if (!isset($INPUT['pro_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro_token]]']));
 
 $fcmtoken  = $INPUT['fcm_token'];
+$ispro     = $INPUT['pro'] == 'true';
+$pro_token = $INPUT['pro_token'];
 $user_key = generateRandomAuthKey();
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('INSERT INTO users (user_key, fcm_token, timestamp_accessed) VALUES (:key, :token, NOW())');
+if ($ispro)
-$stmt->execute(['key' => $user_key, 'token' => $fcmtoken]);
+{
+	if (!verifyOrderToken($pro_token)) die(json_encode(['success' => false, 'message' => 'Purchase token could not be verified']));
+}
+
+$stmt = $pdo->prepare('INSERT INTO users (user_key, fcm_token, is_pro, pro_token, timestamp_accessed) VALUES (:key, :token, :bpro, :spro, NOW())');
+$stmt->execute(['key' => $user_key, 'token' => $fcmtoken, 'bpro' => $ispro, 'spro' => $ispro ? $pro_token : null]);
 $user_id = $pdo->lastInsertId('user_id');
 
 echo json_encode(
@@ -21,7 +30,8 @@ echo json_encode(
 	'user_id'   => $user_id,
 	'user_key'  => $user_key,
 	'quota'     => 0,
-	'quota_max'=> 100,
+	'quota_max' => Statics::quota_max($ispro),
+	'is_pro'    => $ispro,
 	'message'   => 'New user registered'
 ]);
 

web/schema.sql

@@ -9,7 +9,9 @@ CREATE TABLE `users`
 
 	`quota_today`        INT(11)      NOT NULL   DEFAULT '0',
 	`quota_day`          DATE             NULL   DEFAULT NULL,
-	`quota_max`          INT(11)      NOT NULL   DEFAULT '100',
+
+	`is_pro`             BIT          NOT NULL   DEFAULT 0,
+	`pro_token`          VARCHAR(256)     NULL   DEFAULT NULL,
 
 	PRIMARY KEY (`user_id`)
 );

web/send.php

@@ -32,7 +32,7 @@ if (strlen($content) > 10000)    die(json_encode(['success' => false, 'errhighli
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, fcm_token, messages_sent, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+$stmt = $pdo->prepare('SELECT user_id, user_key, fcm_token, messages_sent, quota_today, is_pro, quota_day FROM users WHERE user_id = :uid LIMIT 1');
 $stmt->execute(['uid' => $user_id]);
 
 $datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
@@ -47,7 +47,7 @@ $fcm = $data['fcm_token'];
 
 $new_quota = $data['quota_today'] + 1;
 if ($data['quota_day'] === null || $data['quota_day'] !== date("Y-m-d")) $new_quota=1;
-if ($new_quota > $data['quota_max']) die(json_encode(['success' => false, 'errhighlight' => -1, 'message' => 'Daily quota reached ('.$data['quota_max'].')']));
+if ($new_quota > Statics::quota_max($data['is_pro'])) die(json_encode(['success' => false, 'errhighlight' => -1, 'message' => 'Daily quota reached ('.Statics::quota_max($data['is_pro']).')']));
 
 //------------------------------------------------------------------
 
@@ -94,7 +94,8 @@ echo (json_encode(
 	'message'      => 'Message sent',
 	'response'     => $httpresult,
 	'messagecount' => $data['messages_sent']+1,
-	'quota'=>$new_quota,
+	'quota'        => $new_quota,
-	'quota_max'=>$data['quota_max'],
+	'is_pro'       => $data['is_pro'],
+	'quota_max'    => Statics::quota_max($data['is_pro']),
 ]));
 return 0;

web/update.php

@@ -16,7 +16,7 @@ $fcm_token = isset($INPUT['fcm_token']) ? $INPUT['fcm_token'] : null;
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_day, is_pro FROM users WHERE user_id = :uid LIMIT 1');
 $stmt->execute(['uid' => $user_id]);
 
 $datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
@@ -28,7 +28,7 @@ if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'me
 if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'message' => 'Authentification failed']));
 
 $quota = $data['quota_today'];
-$quota_max = $data['quota_max'];
+$is_pro = $data['is_pro'];
 
 $new_userkey = generateRandomAuthKey();
 
@@ -43,7 +43,8 @@ if ($fcm_token === null)
 		'user_id'  => $user_id,
 		'user_key' => $new_userkey,
 		'quota'    => $quota,
-		'quota_max'=> $quota_max,
+		'quota_max'=> Statics::quota_max($data['is_pro']),
+		'is_pro'   => $is_pro,
 		'message'  => 'user updated'
 	]);
 	return 0;
@@ -59,7 +60,8 @@ else
 		'user_id' => $user_id,
 		'user_key' => $new_userkey,
 		'quota'    => $quota,
-		'quota_max'=> $quota_max,
+		'quota_max'=> Statics::quota_max($data['is_pro']),
+		'is_pro'   => $is_pro,
 		'message' => 'user updated'
 	]);
 	return 0;

web/upgrade.php

@@ -0,0 +1,78 @@
+<?php
+
+include_once 'model.php';
+
+$INPUT = array_merge($_GET, $_POST);
+
+
+if (!isset($INPUT['user_id']))   die(json_encode(['success' => false, 'message' => 'Missing parameter [[user_id]]']));
+if (!isset($INPUT['user_key']))  die(json_encode(['success' => false, 'message' => 'Missing parameter [[user_key]]']));
+if (!isset($INPUT['pro']))       die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro]]']));
+if (!isset($INPUT['pro_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro_token]]']));
+
+$user_id   = $INPUT['user_id'];
+$user_key  = $INPUT['user_key'];
+$ispro     = $INPUT['pro'] == 'true';
+$pro_token = $INPUT['pro_token'];
+
+//----------------------
+
+$pdo = getDatabase();
+
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_day, is_pro, pro_token FROM users WHERE user_id = :uid LIMIT 1');
+$stmt->execute(['uid' => $user_id]);
+
+$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
+if (count($datas)<=0) die(json_encode(['success' => false, 'message' => 'User not found']));
+$data = $datas[0];
+
+if ($data === null) die(json_encode(['success' => false, 'message' => 'User not found']));
+if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'message' => 'UserID not found']));
+if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'message' => 'Authentification failed']));
+
+if ($ispro)
+{
+	// set pro=true
+
+	if ($data['pro_token'] != $pro_token)
+	{
+		if (!verifyOrderToken($pro_token)) die(json_encode(['success' => false, 'message' => 'Purchase token could not be verified']));
+	}
+
+	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), is_pro=1, pro_token=:ptk WHERE user_id = :uid');
+	$stmt->execute(['uid' => $user_id, 'ptk' => $pro_token]);
+
+	$stmt = $pdo->prepare('UPDATE users SET is_pro=0, pro_token=NULL WHERE user_id <> :uid AND pro_token = :ptk');
+	$stmt->execute(['uid' => $user_id, 'ptk' => $pro_token]);
+
+	echo json_encode(
+		[
+			'success'  => true,
+			'user_id'  => $user_id,
+			'user_key' => $new_userkey,
+			'quota'    => $data['quota'],
+			'quota_max'=> Statics::quota_max(true),
+			'is_pro'   => true,
+			'message'  => 'user updated'
+		]);
+	return 0;
+}
+else
+{
+	// set pro=false
+
+	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), is_pro=0, pro_token=NULL WHERE user_id = :uid');
+	$stmt->execute(['uid' => $user_id]);
+
+	echo json_encode(
+		[
+			'success'  => true,
+			'user_id'  => $user_id,
+			'user_key' => $new_userkey,
+			'quota'    => $data['quota'],
+			'quota_max'=> Statics::quota_max(false),
+			'is_pro'   => false,
+			'message'  => 'user updated'
+		]);
+	return 0;
+}