feat(citra): premium-unlock patch (#1115)

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

src/main/kotlin/app/revanced/patches/citra/misc/premium/annotations/PremiumUnlockCompatbility.kt

@@ -0,0 +1,7 @@
+package app.revanced.patches.citra.misc.premium.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("org.citra.citra_emu")])
+internal annotation class PremiumUnlockCompatbility

src/main/kotlin/app/revanced/patches/citra/misc/premium/fingerprints/PremiumUnlockFingerprint.kt

@@ -0,0 +1,7 @@
+package app.revanced.patches.citra.misc.premium.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object PremiumUnlockFingerprint : MethodFingerprint(
+    customFingerprint = { it.definingClass == "Lorg/citra/citra_emu/ui/main/MainActivity;" && it.name == "isPremiumActive" }
+)

src/main/kotlin/app/revanced/patches/citra/misc/premium/patch/PremiumUnlockPatch.kt

@@ -0,0 +1,37 @@
+package app.revanced.patches.citra.misc.premium.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.MethodFingerprintExtensions.name
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultError
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patches.citra.misc.premium.annotations.PremiumUnlockCompatbility
+import app.revanced.patches.citra.misc.premium.fingerprints.PremiumUnlockFingerprint
+
+@Patch
+@Name("premium-unlock")
+@Description("Unlocks premium functions.")
+@PremiumUnlockCompatbility
+@Version("0.0.1")
+class PremiumUnlockPatch : BytecodePatch(
+    listOf(PremiumUnlockFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        val result = PremiumUnlockFingerprint.result ?: return PatchResultError("${PremiumUnlockFingerprint.name} not found")
+
+        result.mutableMethod.addInstructions(
+            0,
+            """
+                const v0, 0x1
+                return v0
+            """
+        )
+        return PatchResultSuccess()
+    }
+}