feat(YouTube): Add Announcements patch (#3166)

src/main/kotlin/app/revanced/patches/youtube/misc/announcements/AnnouncementsPatch.kt

@@ -0,0 +1,61 @@
+package app.revanced.patches.youtube.misc.announcements
+
+import app.revanced.extensions.exception
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.getInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.annotation.CompatiblePackage
+import app.revanced.patcher.patch.annotation.Patch
+import app.revanced.patches.shared.fingerprints.WatchWhileActivityFingerprint
+import app.revanced.patches.shared.settings.preference.impl.StringResource
+import app.revanced.patches.shared.settings.preference.impl.SwitchPreference
+import app.revanced.patches.youtube.misc.settings.SettingsPatch
+import com.android.tools.smali.dexlib2.Opcode
+
+@Patch(
+    name = "Announcements",
+    description = "Shows announcements on startup.",
+    compatiblePackages = [CompatiblePackage("com.google.android.youtube")],
+    dependencies = [SettingsPatch::class]
+)
+@Suppress("unused")
+object AnnouncementsPatch : BytecodePatch(
+    setOf(WatchWhileActivityFingerprint)
+) {
+    private const val INTEGRATIONS_CLASS_DESCRIPTOR =
+        "Lapp/revanced/integrations/patches/announcements/AnnouncementsPatch;"
+
+    override fun execute(context: BytecodeContext) {
+        val onCreateMethod = WatchWhileActivityFingerprint.result?.let {
+            it.mutableClass.methods.find { method -> method.name == "onCreate" }
+        } ?: throw WatchWhileActivityFingerprint.exception
+
+        val superCallIndex = onCreateMethod.getInstructions().indexOfFirst { it.opcode == Opcode.INVOKE_SUPER_RANGE }
+
+        onCreateMethod.addInstructions(
+            superCallIndex + 1,
+            "invoke-static { v1 }, $INTEGRATIONS_CLASS_DESCRIPTOR->showAnnouncement(Landroid/app/Activity;)V"
+        )
+
+        SettingsPatch.PreferenceScreen.MISC.addPreferences(
+            SwitchPreference(
+                "revanced_announcements",
+                StringResource(
+                    "revanced_announcements_title",
+                    "Show announcements"
+                ),
+                StringResource(
+                    "revanced_announcements_summary_on",
+                    "Announcements are shown on startup."
+                ), StringResource(
+                    "revanced_announcements_summary_off",
+                    "Announcements are not shown on startup."
+                ), StringResource(
+                    "revanced_announcements_enabled_summary",
+                    "Show announcements on startup."
+                ),
+            )
+        )
+    }
+}