feat(Reddit): add Change package name patch

src/main/kotlin/app/revanced/patches/reddit/layout/branding/packagename/ChangePackageNamePatch.kt

@@ -0,0 +1,102 @@
+package app.revanced.patches.reddit.layout.branding.packagename
+
+import app.revanced.patcher.data.ResourceContext
+import app.revanced.patcher.patch.PatchException
+import app.revanced.patcher.patch.ResourcePatch
+import app.revanced.patcher.patch.annotation.CompatiblePackage
+import app.revanced.patcher.patch.annotation.Patch
+import app.revanced.patcher.patch.options.PatchOption.PatchExtensions.stringPatchOption
+import org.w3c.dom.Element
+
+@Patch(
+    name = "Change package name",
+    description = "Specifies the package name for Reddit.",
+    compatiblePackages = [CompatiblePackage("com.reddit.frontpage")],
+    use = false
+)
+@Suppress("unused")
+object ChangePackageNamePatch : ResourcePatch() {
+    private const val PACKAGE_NAME_REDDIT = "com.reddit.frontpage"
+    private const val CLONE_PACKAGE_NAME_REDDIT = "$PACKAGE_NAME_REDDIT.revanced"
+    private const val DEFAULT_PACKAGE_NAME_REDDIT = "$PACKAGE_NAME_REDDIT.rvx"
+
+    private val PackageNameReddit by stringPatchOption(
+        key = "PackageNameReddit",
+        default = DEFAULT_PACKAGE_NAME_REDDIT,
+        values = mapOf(
+            "Clone" to CLONE_PACKAGE_NAME_REDDIT,
+            "Default" to DEFAULT_PACKAGE_NAME_REDDIT
+        ),
+        title = "Package name of Reddit",
+        description = "The name of the package to rename the app to."
+    )
+
+    override fun execute(context: ResourceContext) {
+        val redditPackageName = PackageNameReddit
+            ?: throw PatchException("Invalid package name.")
+
+        // Ensure device runs Android.
+        try {
+            // Android, RVX Manager
+            // ====
+            // For some reason, in Android AAPT2, a compilation error occurs when changing the [strings.xml] of the Reddit
+            // This only affects RVX Manager, and has not yet found a valid workaround
+            Class.forName("android.os.Environment")
+            context.replaceManifest(redditPackageName)
+        } catch (_: ClassNotFoundException) {
+            // CLI
+            context.replaceManifestAndString(redditPackageName)
+        }
+    }
+
+    private fun ResourceContext.replaceManifest(redditPackageName: String) {
+        this["AndroidManifest.xml"].apply {
+            writeText(
+                readText()
+                    .replace(
+                        "package=\"$PACKAGE_NAME_REDDIT",
+                        "package=\"$redditPackageName"
+                    )
+            )
+        }
+    }
+
+    private fun ResourceContext.replaceManifestAndString(redditPackageName: String) {
+        // replace strings
+        this.xmlEditor["res/values/strings.xml"].use { editor ->
+            val resourcesNode = editor.file.getElementsByTagName("resources").item(0) as Element
+
+            val children = resourcesNode.childNodes
+            for (i in 0 until children.length) {
+                val node = children.item(i) as? Element ?: continue
+
+                node.textContent = when (node.getAttribute("name")) {
+                    "provider_authority_appdata", "provider_authority_file",
+                    "provider_authority_userdata", "provider_workmanager_init"
+                    -> node.textContent.replace(PACKAGE_NAME_REDDIT, redditPackageName)
+
+                    else -> continue
+                }
+            }
+        }
+
+        // replace manifest permission and provider
+        this["AndroidManifest.xml"].apply {
+            writeText(
+                readText()
+                    .replace(
+                        "android:authorities=\"$PACKAGE_NAME_REDDIT",
+                        "android:authorities=\"$redditPackageName"
+                    )
+                    .replace(
+                        "package=\"$PACKAGE_NAME_REDDIT",
+                        "package=\"$redditPackageName"
+                    )
+                    .replace(
+                        "$PACKAGE_NAME_REDDIT.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION",
+                        "$redditPackageName.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION"
+                    )
+            )
+        }
+    }
+}