From 04c99a5a36041b56061a131d474e45efabd6a4ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B0=8F=E7=99=BD-=E7=99=BD?= <i@moedog.org>
Date: Fri, 31 Mar 2023 21:14:32 +0800
Subject: [PATCH] Add ktlint, resolve #999

---
 .github/workflows/ci.yml           |  3 +++
 .github/workflows/pull_request.yml |  3 +++
 build.gradle.kts                   |  4 ++++
 ktlint.gradle.kts                  | 38 ++++++++++++++++++++++++++++++
 4 files changed, 48 insertions(+)
 create mode 100644 ktlint.gradle.kts

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 33ba5506e..0384466a6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,6 +27,9 @@ jobs:
         run: |
           echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;25.2.9519653" --sdk_root=${ANDROID_SDK_ROOT} &> /dev/null
 
+      - name: Ktlint Check
+        run: ./gradlew ktlintCheck
+
       - name: Gradle Build
         uses: gradle/gradle-build-action@v2
         with:
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 1958f6d1f..54d87d050 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -22,6 +22,9 @@ jobs:
         run: |
           echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;25.2.9519653" --sdk_root=${ANDROID_SDK_ROOT} &> /dev/null
 
+      - name: Ktlint Check
+        run: ./gradlew ktlintCheck
+
       - name: Gradle Build
         uses: gradle/gradle-build-action@v2
         with:
diff --git a/build.gradle.kts b/build.gradle.kts
index c5c3c51de..de45f1bdf 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -5,6 +5,10 @@ plugins {
     id("com.google.devtools.ksp") version "1.8.10-1.0.9" apply false
 }
 
+allprojects {
+    apply(from = "$rootDir/ktlint.gradle.kts")
+}
+
 tasks.register("Delete", Delete::class) {
     delete(rootProject.buildDir)
 }
diff --git a/ktlint.gradle.kts b/ktlint.gradle.kts
new file mode 100644
index 000000000..3ba86dacb
--- /dev/null
+++ b/ktlint.gradle.kts
@@ -0,0 +1,38 @@
+val ktlint by configurations.creating
+
+dependencies {
+    ktlint("com.pinterest:ktlint:0.48.2") {
+        attributes {
+            attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling.EXTERNAL))
+        }
+    }
+    // ktlint(project(":custom-ktlint-ruleset")) // in case of custom ruleset
+}
+
+val ktlintCheck by tasks.registering(JavaExec::class) {
+    group = LifecycleBasePlugin.VERIFICATION_GROUP
+    description = "Check Kotlin code style"
+    classpath = ktlint
+    mainClass.set("com.pinterest.ktlint.Main")
+    // see https://pinterest.github.io/ktlint/install/cli/#command-line-usage for more information
+    args(
+        "**/*.kt",
+        "**/*.kts",
+        "!**/build/**",
+    )
+}
+
+val ktlintFormat by tasks.registering(JavaExec::class) {
+    group = LifecycleBasePlugin.VERIFICATION_GROUP
+    description = "Check Kotlin code style and format"
+    classpath = ktlint
+    mainClass.set("com.pinterest.ktlint.Main")
+    jvmArgs("--add-opens=java.base/java.lang=ALL-UNNAMED")
+    // see https://pinterest.github.io/ktlint/install/cli/#command-line-usage for more information
+    args(
+        "-F",
+        "**/*.kt",
+        "**/*.kts",
+        "!**/build/**",
+    )
+}