Add initial deep link support

app/build.gradle

@@ -10,8 +10,8 @@ android {
         applicationId "com.fox2code.mmm"
         minSdk 21
         targetSdk 32
-        versionCode 20
-        versionName "0.2.9"
+        versionCode 21
+        versionName "3.0.0-dev1"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/AndroidManifest.xml

@@ -55,6 +55,28 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".deeplink.DeepLinkActivity"
+            android:exported="true"
+            android:label="@string/app_name_short"
+            android:permission="android.permission.INTERNET">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data
+                    android:host="mmm.fox2code.com"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data
+                    android:host="${applicationId}"
+                    android:scheme="app" />
+            </intent-filter>
+        </activity>
         <activity
             android:name=".installer.InstallerActivity"
             android:parentActivityName=".MainActivity"

app/src/main/java/com/fox2code/mmm/MainActivity.java

@@ -13,8 +13,6 @@ import android.util.Log;
 import android.util.TypedValue;
 import android.view.View;
 import android.view.inputmethod.EditorInfo;
-import android.widget.LinearLayout;
-import android.widget.TextView;
 
 import com.fox2code.mmm.compat.CompatActivity;
 import com.fox2code.mmm.installer.InstallerInitializer;

app/src/main/java/com/fox2code/mmm/compat/CompatActivity.java

@@ -231,6 +231,11 @@ public class CompatActivity extends AppCompatActivity {
         return super.onCreateOptionsMenu(menu);
     }
 
+    public void startActivityForResult(Intent intent,
+                                       OnActivityResultCallback onActivityResultCallback) {
+        this.startActivityForResult(intent, null, onActivityResultCallback);
+    }
+
     @SuppressWarnings("deprecation")
     public void startActivityForResult(Intent intent, @Nullable Bundle options,
                                        OnActivityResultCallback onActivityResultCallback) {

app/src/main/java/com/fox2code/mmm/deeplink/DeepLinkActivity.java

@@ -0,0 +1,53 @@
+package com.fox2code.mmm.deeplink;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+
+import com.fox2code.mmm.BuildConfig;
+import com.fox2code.mmm.MainActivity;
+import com.fox2code.mmm.compat.CompatActivity;
+import com.fox2code.mmm.settings.SettingsActivity;
+
+/**
+ * Note: Code must be under high security standard, as any website can do a request to this
+ */
+public class DeepLinkActivity extends CompatActivity {
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Intent intent = this.getIntent();
+        if (intent == null) {
+            this.forceBackPressed();
+            return;
+        }
+        Uri uri = intent.getData();
+        String path;
+        if (uri == null || (path = uri.getPath()) == null || uri.getHost() == null ||
+                !uri.getHost().equals("https".equals(uri.getScheme()) ?
+                        "mmm.fox2code.com" : BuildConfig.APPLICATION_ID)) {
+            this.forceBackPressed();
+            return;
+        }
+        while (path.startsWith("/"))
+            path = path.substring(1);
+        if (path.isEmpty() || path.equals("home")) {
+            this.startActivity(MainActivity.class);
+            return;
+        }
+        if (path.equals("settings")) {
+            this.startActivity(SettingsActivity.class);
+            return;
+        }
+        this.forceBackPressed();
+    }
+
+    private void startActivity(Class<? extends Activity> activity) {
+        this.startActivityForResult(new Intent(this, activity).addFlags(
+                Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK),
+                (resultCode, data) -> this.forceBackPressed());
+    }
+}