feat(Twitter): Added Feature Flag Hook

src/main/kotlin/crimera/patches/twitter/featureFlag/FeatureFlagPatch.kt

@@ -0,0 +1,45 @@
+package crimera.patches.twitter.featureFlag
+
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.getInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchException
+import crimera.patches.twitter.featureFlag.fingerprints.FeatureFlagFingerprint
+
+import app.revanced.patcher.patch.annotation.CompatiblePackage
+import app.revanced.patcher.patch.annotation.Patch
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
+import com.android.tools.smali.dexlib2.Opcode
+import crimera.patches.twitter.misc.settings.SettingsPatch
+
+@Patch(
+    name = "Hook feature flag",
+    compatiblePackages = [CompatiblePackage("com.twitter.android")],
+    use = true
+)
+@Suppress("unused")
+object FeatureFlagPatch:BytecodePatch(
+    setOf(FeatureFlagFingerprint)
+) {
+    override fun execute(context: BytecodeContext) {
+
+        val result = FeatureFlagFingerprint.result
+            ?:throw PatchException("FeatureFlagFingerprint not found")
+
+        val methods = result.mutableClass.methods
+        val booleanMethod = methods.first { it.returnType == "Z" && it.parameters == listOf("Ljava/lang/String;","Z") }
+
+        val METHOD = """
+            invoke-static {p1,v0}, ${SettingsPatch.PATCHES_DESCRIPTOR}/FeatureSwitchPatch;->flagInfo(Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
+            move-result-object v0
+        """.trimIndent()
+
+        val loc = booleanMethod.getInstructions().first { it.opcode == Opcode.MOVE_RESULT_OBJECT }.location.index
+
+        booleanMethod.addInstructions(loc+1,METHOD)
+        //end
+    }
+}

src/main/kotlin/crimera/patches/twitter/featureFlag/fingerprints/FeatureFlagFingerprint.kt

@@ -0,0 +1,7 @@
+package crimera.patches.twitter.featureFlag.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+
+object FeatureFlagFingerprint :MethodFingerprint(
+    strings = listOf("feature_switches_configs_crashlytics_enabled")
+)

src/main/kotlin/crimera/patches/twitter/featureFlag/fingerprints/FeatureFlagLoadFingerprint.kt

@@ -0,0 +1,10 @@
+package crimera.patches.twitter.featureFlag.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+
+object FeatureFlagLoadFingerprint:MethodFingerprint(
+    customFingerprint = { methodDef, _ ->
+        methodDef.definingClass.endsWith("Lapp/revanced/integrations/twitter/patches/FeatureSwitchPatch;") &&
+                methodDef.name == "load"
+    }
+)

src/main/kotlin/crimera/patches/twitter/misc/settings/SettingsPatch.kt

@@ -30,6 +30,7 @@ object SettingsPatch : BytecodePatch(
     const val PATCHES_DESCRIPTOR = "$INTEGRATIONS_PACKAGE/patches"
     private const val ADD_PREF_DESCRIPTOR = "$UTILS_DESCRIPTOR;->addPref([Ljava/lang/String;Ljava/lang/String;)[Ljava/lang/String;"
     const val SSTS_DESCRIPTOR = "invoke-static {}, $INTEGRATIONS_PACKAGE/settings/SettingsStatus;"
+    const val FSTS_DESCRIPTOR = "invoke-static {}, $INTEGRATIONS_PACKAGE/patches/FeatureSwitchPatch;"
     private const val START_ACTIVITY_DESCRIPTOR =
         "invoke-static {}, $UTILS_DESCRIPTOR;->startSettingsActivity()V"