feat(Reddit): Add Change version code patch

src/main/kotlin/app/revanced/patches/reddit/misc/versioncode/ChangeVersionCodePatch.kt

@@ -0,0 +1,57 @@
+package app.revanced.patches.reddit.misc.versioncode
+
+import app.revanced.patcher.data.ResourceContext
+import app.revanced.patcher.patch.PatchException
+import app.revanced.patcher.patch.options.PatchOption.PatchExtensions.booleanPatchOption
+import app.revanced.patcher.patch.options.PatchOption.PatchExtensions.intPatchOption
+import app.revanced.patches.reddit.utils.compatibility.Constants.COMPATIBLE_PACKAGE
+import app.revanced.util.patch.BaseResourcePatch
+import app.revanced.util.valueOrThrow
+import org.w3c.dom.Element
+
+@Suppress("unused")
+object ChangeVersionCodePatch : BaseResourcePatch(
+    name = "Change version code",
+    description = "Changes the version code of the app. By default the highest version code is set. " +
+            "This allows older versions of an app to be installed " +
+            "if their version code is set to the same or a higher value and can stop app stores to update the app.",
+    compatiblePackages = COMPATIBLE_PACKAGE,
+    use = false
+) {
+    private val ChangeVersionCode by booleanPatchOption(
+        key = "ChangeVersionCode",
+        default = false,
+        title = "Change version code",
+        description = "Changes the version code of the app.",
+        required = true
+    )
+
+    private val VersionCode = intPatchOption(
+        key = "VersionCode",
+        default = Int.MAX_VALUE,
+        title = "Version code",
+        description = "The version code to use.",
+        required = true
+    )
+
+    override fun execute(context: ResourceContext) {
+        if (ChangeVersionCode == false) {
+            println("INFO: Version code will remain unchanged as 'ChangeVersionCode' is false.")
+            return
+        }
+
+        val versionCode = VersionCode.valueOrThrow()
+
+        if (versionCode < 1) {
+            throw PatchException(
+                "Invalid versionCode: $versionCode, " +
+                        "Version code should be larger than 1 and smaller than ${Int.MAX_VALUE}."
+            )
+        }
+
+        context.document["AndroidManifest.xml"].use { document ->
+            val manifestElement = document.getElementsByTagName("manifest").item(0) as Element
+            manifestElement.setAttribute("android:versionCode", "$versionCode")
+        }
+    }
+}

src/main/kotlin/app/revanced/util/ResourceUtils.kt

@@ -18,6 +18,9 @@ val classLoader: ClassLoader = object {}.javaClass.classLoader
 fun PatchOption<String>.valueOrThrow() = value
     ?: throw PatchException("Invalid patch option: $title.")
 
+fun PatchOption<Int?>.valueOrThrow() = value
+    ?: throw PatchException("Invalid patch option: $title.")
+
 fun PatchOption<String>.lowerCaseOrThrow() = valueOrThrow()
     .lowercase()