feat(youtube/microg-support): handle availability of Vanced MicroG

src/main/kotlin/app/revanced/util/microg/MicroGBytecodeHelper.kt

@@ -1,6 +1,7 @@
 package app.revanced.util.microg
 
 import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.addInstruction
 import app.revanced.patcher.extensions.addInstructions
 import app.revanced.patcher.extensions.replaceInstruction
 import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
@@ -20,6 +21,17 @@ import org.jf.dexlib2.immutable.reference.ImmutableStringReference
  * Helper class for applying bytecode patches needed for the microg-support patches.
  */
 internal object MicroGBytecodeHelper {
+    /**
+     * Hook a method to check the availability of MicroG.
+     *
+     * @param fingerprint The fingerprint of the method to add the call for the notice in.
+     */
+    fun injectNotice(fingerprint: MethodFingerprint) {
+        fingerprint.result!!.mutableMethod.addInstruction(
+            0,
+            "invoke-static {}, Lapp/revanced/integrations/patches/MicroGSupport;->checkAvailability()V"
+        )
+    }
 
     /**
      * Transform strings with package name out of [fromPackageName] and [toPackageName].

src/main/kotlin/app/revanced/util/microg/MicroGResourceHelper.kt

@@ -1,16 +1,26 @@
 package app.revanced.util.microg
 
 import app.revanced.patcher.data.ResourceContext
+import app.revanced.util.resources.ResourceUtils.Settings.mergeStrings
 
 /**
  * Helper class for applying resource patches needed for the microg-support patches.
  */
 internal object MicroGResourceHelper {
+
+    /**
+     * Add necessary strings to the strings.xml file.
+     *
+     * @param context The resource context.
+     * @param stringsHost The file which hosts the strings.
+     */
+    fun addStrings(context: ResourceContext, stringsHost: String = "microg/host/values/strings.xml") = context.mergeStrings(stringsHost)
+
     /**
      * Patch the manifest to work with MicroG.
      *
-     * @param context Bytecode context.
-     * @param fromPackageName Original package name.
+     * @param context The resource context.
+     * @param fromPackageName The original package name.
      * @param toPackageName The package name to accept.
      * @param toName The new name of the app.
      */