From e3fad97484d7eb962aeb53d44a0047b34a881071 Mon Sep 17 00:00:00 2001
From: Dawid Krajcarz <80264606+drobotk@users.noreply.github.com>
Date: Thu, 10 Apr 2025 23:08:43 +0200
Subject: [PATCH] feat(Messenger): Add `Remove Meta AI tab` patch (#4726)

---
 patches/api/patches.api                       |  4 +++
 .../patches/messenger/navbar/Fingerprints.kt  | 16 ++++++++++++
 .../messenger/navbar/RemoveMetaAITabPatch.kt  | 25 +++++++++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 patches/src/main/kotlin/app/revanced/patches/messenger/navbar/Fingerprints.kt
 create mode 100644 patches/src/main/kotlin/app/revanced/patches/messenger/navbar/RemoveMetaAITabPatch.kt

diff --git a/patches/api/patches.api b/patches/api/patches.api
index b53b2c301..543bd5f9d 100644
--- a/patches/api/patches.api
+++ b/patches/api/patches.api
@@ -272,6 +272,10 @@ public final class app/revanced/patches/messenger/inputfield/DisableTypingIndica
 	public static final fun getDisableTypingIndicatorPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
 
+public final class app/revanced/patches/messenger/navbar/RemoveMetaAITabPatchKt {
+	public static final fun getRemoveMetaAITabPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
+}
+
 public final class app/revanced/patches/mifitness/misc/locale/ForceEnglishLocalePatchKt {
 	public static final fun getForceEnglishLocalePatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
diff --git a/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/Fingerprints.kt b/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/Fingerprints.kt
new file mode 100644
index 000000000..766e20209
--- /dev/null
+++ b/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/Fingerprints.kt
@@ -0,0 +1,16 @@
+package app.revanced.patches.messenger.navbar
+
+import app.revanced.patcher.fingerprint
+import com.android.tools.smali.dexlib2.Opcode
+
+internal val createTabConfigurationFingerprint = fingerprint {
+    strings("MessengerTabConfigurationCreator.createTabConfiguration")
+    opcodes(
+        Opcode.INVOKE_DIRECT,
+        Opcode.MOVE_RESULT,
+        Opcode.IF_EQZ,
+        Opcode.INVOKE_DIRECT,
+        Opcode.MOVE_RESULT,
+        Opcode.IF_EQZ,
+    )
+}
diff --git a/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/RemoveMetaAITabPatch.kt b/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/RemoveMetaAITabPatch.kt
new file mode 100644
index 000000000..75fb98577
--- /dev/null
+++ b/patches/src/main/kotlin/app/revanced/patches/messenger/navbar/RemoveMetaAITabPatch.kt
@@ -0,0 +1,25 @@
+package app.revanced.patches.messenger.navbar
+
+import app.revanced.patcher.patch.bytecodePatch
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
+import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
+
+@Suppress("unused")
+val removeMetaAITabPatch = bytecodePatch(
+    name = "Remove Meta AI tab",
+    description = "Removes the 'Meta AI' tab from the navbar.",
+) {
+    compatibleWith("com.facebook.orca")
+
+    execute {
+        createTabConfigurationFingerprint.let {
+            val moveResultIndex = it.patternMatch!!.startIndex + 1
+            val enabledRegister = it.method.getInstruction<OneRegisterInstruction>(moveResultIndex).registerA
+            it.method.replaceInstruction(
+                moveResultIndex,
+                "const/4 v$enabledRegister, 0x0"
+            )
+        }
+    }
+}