From 4291cc8eb1f4385528afcc9cab2592c8b3afa44a Mon Sep 17 00:00:00 2001
From: Andreas <andreas.everos@gmail.com>
Date: Sun, 14 Aug 2022 16:43:28 +0200
Subject: [PATCH] Add task to generate locales_config.xml (#7754)

---
 .gitignore                                    |  3 ++
 app/build.gradle.kts                          |  4 +-
 app/src/main/AndroidManifest.xml              |  1 +
 buildSrc/build.gradle.kts                     |  8 ++++
 buildSrc/settings.gradle.kts                  |  7 ++++
 .../src/main/kotlin/LocalesConfigPlugin.kt    | 40 +++++++++++++++++++
 6 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 buildSrc/settings.gradle.kts
 create mode 100644 buildSrc/src/main/kotlin/LocalesConfigPlugin.kt

diff --git a/.gitignore b/.gitignore
index 93b8ea71f..8e157b61c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,6 @@ app/**/output.json
 
 # Hebrew assets are copied on build
 app/src/main/res/values-iw/
+
+# Generated
+locales_config.xml
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 47fd447dd..953d0f418 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -281,6 +281,8 @@ dependencies {
 }
 
 tasks {
+    val localesConfigTask = registerLocalesConfigTask(project)
+
     withType<Test> {
         useJUnitPlatform()
         testLogging {
@@ -313,7 +315,7 @@ tasks {
     }
 
     preBuild {
-        dependsOn(formatKotlin, copyHebrewStrings)
+        dependsOn(formatKotlin, copyHebrewStrings, localesConfigTask)
     }
 }
 
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index c639dc583..b3368ade7 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -27,6 +27,7 @@
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:localeConfig="@xml/locales_config"
         android:largeHeap="true"
         android:requestLegacyExternalStorage="true"
         android:roundIcon="@mipmap/ic_launcher_round"
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index aebe26153..c2d953689 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -1,6 +1,14 @@
 plugins {
     `kotlin-dsl`
 }
+
+dependencies {
+    compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinLibs.versions.kotlin.version.get()}")
+
+    implementation(gradleApi())
+}
+
 repositories {
     mavenCentral()
+    google()
 }
diff --git a/buildSrc/settings.gradle.kts b/buildSrc/settings.gradle.kts
new file mode 100644
index 000000000..807fe41ca
--- /dev/null
+++ b/buildSrc/settings.gradle.kts
@@ -0,0 +1,7 @@
+dependencyResolutionManagement {
+    versionCatalogs {
+        create("kotlinLibs") {
+            from(files("../gradle/kotlinx.versions.toml"))
+        }
+    }
+}
diff --git a/buildSrc/src/main/kotlin/LocalesConfigPlugin.kt b/buildSrc/src/main/kotlin/LocalesConfigPlugin.kt
new file mode 100644
index 000000000..8a51e32a6
--- /dev/null
+++ b/buildSrc/src/main/kotlin/LocalesConfigPlugin.kt
@@ -0,0 +1,40 @@
+import org.gradle.api.Project
+import org.gradle.api.Task
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.kotlin.dsl.TaskContainerScope
+
+fun TaskContainerScope.registerLocalesConfigTask(project: Project): TaskProvider<Task> {
+    return with(project) {
+        register("generateLocalesConfig") {
+            val emptyResourcesElement = "<resources>\\s*<\\/resources>|<resources\\/>".toRegex()
+            val valuesPrefix = "values-?".toRegex()
+
+            val languages = fileTree("$projectDir/src/main/res/")
+                .matching {
+                    include("**/strings.xml")
+                }
+                .filterNot {
+                    it.readText().contains(emptyResourcesElement)
+                }
+                .joinToString(separator = "\n") {
+                    val language = it.parentFile.name
+                        .replace(valuesPrefix, "")
+                        .takeIf(String::isNotBlank) ?: "en"
+                    "   <locale android:name=\"$language\"/>"
+                }
+
+
+            val content = """
+<?xml version="1.0" encoding="utf-8"?>
+<locale-config xmlns:android="http://schemas.android.com/apk/res/android">
+$languages
+</locale-config>
+    """.trimIndent()
+
+            val localeFile = file("$projectDir/src/main/res/xml/locales_config.xml")
+            localeFile.parentFile.mkdirs()
+            localeFile.writeText(content)
+        }
+    }
+}
+