feat(twitch/show-deleted-messages): show-deleted-messages patch (#1030)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>

src/main/kotlin/app/revanced/patches/twitch/chat/antidelete/annotations/ShowDeletedMessagesCompatibility.kt

@@ -0,0 +1,10 @@
+package app.revanced.patches.twitch.chat.antidelete.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("tv.twitch.android.app")])
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class ShowDeletedMessagesCompatibility
+

src/main/kotlin/app/revanced/patches/twitch/chat/antidelete/fingerprints/DeletedMessageClickableSpanCtorFingerprint.kt

@@ -0,0 +1,19 @@
+package app.revanced.patches.twitch.chat.antidelete.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.extensions.or
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.twitch.chat.antidelete.annotations.ShowDeletedMessagesCompatibility
+import org.jf.dexlib2.AccessFlags
+
+@Name("deleted-msg-span-ctor-fingerprint")
+@ShowDeletedMessagesCompatibility
+@Version("0.0.1")
+object DeletedMessageClickableSpanCtorFingerprint : MethodFingerprint(
+    "V", AccessFlags.PUBLIC or AccessFlags.CONSTRUCTOR,
+    customFingerprint = { methodDef ->
+        methodDef.definingClass.endsWith("DeletedMessageClickableSpan;")
+    }
+)

src/main/kotlin/app/revanced/patches/twitch/chat/antidelete/fingerprints/SetHasModAccessFingerprint.kt

@@ -0,0 +1,16 @@
+package app.revanced.patches.twitch.chat.antidelete.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.twitch.chat.antidelete.annotations.ShowDeletedMessagesCompatibility
+
+@Name("has-mod-access-fingerprint")
+@ShowDeletedMessagesCompatibility
+@Version("0.0.1")
+object SetHasModAccessFingerprint : MethodFingerprint(
+    customFingerprint = { methodDef ->
+        methodDef.definingClass.endsWith("DeletedMessageClickableSpan;") && methodDef.name == "setHasModAccess"
+    }
+)

src/main/kotlin/app/revanced/patches/twitch/chat/antidelete/patch/ShowDeletedMessagesPatch.kt

@@ -0,0 +1,45 @@
+package app.revanced.patches.twitch.chat.antidelete.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.*
+import app.revanced.patcher.patch.*
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.twitch.chat.antidelete.annotations.ShowDeletedMessagesCompatibility
+import app.revanced.patches.twitch.chat.antidelete.fingerprints.*
+import org.jf.dexlib2.Opcode
+import org.jf.dexlib2.builder.instruction.BuilderInstruction10x
+
+@Patch
+@Name("show-deleted-messages")
+@Description("Shows deleted chat messages behind a clickable spoiler.")
+@ShowDeletedMessagesCompatibility
+@Version("0.0.1")
+class ShowDeletedMessagesPatch : BytecodePatch(
+    listOf(
+        SetHasModAccessFingerprint,
+        DeletedMessageClickableSpanCtorFingerprint,
+    )
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        // Force set hasModAccess member to true in constructor
+        with(DeletedMessageClickableSpanCtorFingerprint.result!!.mutableMethod) {
+            addInstructions(
+                implementation!!.instructions.lastIndex, /* place in front of return-void */
+                """
+                    const/4 v0, 1
+                    iput-boolean v0, p0, $definingClass->hasModAccess:Z
+                """
+            )
+        }
+
+        // Disable setHasModAccess setter
+        with(SetHasModAccessFingerprint.result!!.mutableMethod.implementation!!) {
+            addInstruction(0, BuilderInstruction10x(Opcode.RETURN_VOID))
+        }
+
+        return PatchResultSuccess()
+    }
+}