Use Ktlint code linter via Spotless Gradle plugin

.gitignore

@@ -1,9 +1,10 @@
+/pullpitoK
 
-# Created by https://www.gitignore.io/api/gradle,kotlin,eclipse,intellij,visualstudiocode
-# Edit at https://www.gitignore.io/?templates=gradle,kotlin,eclipse,intellij,visualstudiocode
 
-### Eclipse ###
+# Created by https://www.toptal.com/developers/gitignore/api/gradle,kotlin,eclipse,intellij+all,visualstudiocode
+# Edit at https://www.toptal.com/developers/gitignore?templates=gradle,kotlin,eclipse,intellij+all,visualstudiocode
 
+### Eclipse ###
 .metadata
 bin/
 tmp/
@@ -54,26 +55,23 @@ local.properties
 
 # Annotation Processing
 .apt_generated/
+.apt_generated_test/
 
 # Scala IDE specific (Scala & Java development for Eclipse)
 .cache-main
 .scala_dependencies
 .worksheet
 
-### Eclipse Patch ###
-# Eclipse Core
-.project
-
-# JDT-specific (Eclipse Java Development Tools)
-.classpath
-
-# Annotation Processing
-.apt_generated
+# Uncomment this line if you wish to ignore the project description file.
+# Typically, this file would be tracked if it contains build/dependency configurations:
+#.project
 
+### Eclipse Patch ###
+# Spring Boot Tooling
 .sts4-cache/
 
-### Intellij ###
-# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+### Intellij+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 
 # User-specific stuff
@@ -103,9 +101,14 @@ local.properties
 # When using Gradle or Maven with auto-import, you should exclude module files,
 # since they will be recreated, and may cause churn.  Uncomment if using
 # auto-import.
-.idea/modules.xml
-.idea/*.iml
-.idea/modules
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
 
 # CMake
 cmake-build-*/
@@ -140,13 +143,18 @@ fabric.properties
 # Android studio 3.1+ serialized cache file
 .idea/caches/build_file_checksums.ser
 
-### Intellij Patch ###
-# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+### Intellij+all Patch ###
+# Ignores the whole .idea folder and all .iml files
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
 
-# *.iml
-# modules.xml
-# .idea/misc.xml
-# *.ipr
+.idea/
+
+# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
+
+*.iml
+modules.xml
+.idea/misc.xml
+*.ipr
 
 # Sonarlint plugin
 .idea/sonarlint
@@ -182,14 +190,15 @@ hs_err_pid*
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+*.code-workspace
 
 ### VisualStudioCode Patch ###
 # Ignore all local history of files
 .history
 
 ### Gradle ###
 .gradle
-/build/
+build/
 
 # Ignore Gradle GUI config
 gradle-app.setting
@@ -206,7 +215,4 @@ gradle-app.setting
 ### Gradle Patch ###
 **/build/
 
-# End of https://www.gitignore.io/api/gradle,kotlin,eclipse,intellij,visualstudiocode
-/.idea/sonarIssues.xml
-/pullpitoK
-/libsunec.*
+# End of https://www.toptal.com/developers/gitignore/api/gradle,kotlin,eclipse,intellij+all,visualstudiocode

README.md

@@ -32,6 +32,10 @@ An executable file named `pullpitoK` should be generated in the current director
 
 ## Dev tasks
 
+### Format the code
+
+    ./gradlew spotlessApply
+
 ### Inspect the code
 
 Code inspection is configured on the master branch. See the [sonarcloud.io's dashboard](https://sonarcloud.io/dashboard?id=nicokosi_pullpitoK).

build.gradle.kts

@@ -6,6 +6,7 @@ plugins {
     id("com.github.ben-manes.versions") version "0.28.0"
     id("com.github.johnrengelman.shadow") version "5.2.0"
     id("com.adarshr.test-logger") version "2.0.0"
+    id("com.diffplug.gradle.spotless") version "4.5.1"
     application
 }
 
@@ -42,3 +43,14 @@ tasks.withType<DependencyUpdatesTask> {
         }
     }
 }
+
+spotless {
+    kotlin {
+        ktlint()
+    }
+    kotlinGradle {
+        // same as kotlin, but for .gradle.kts files (defaults to '*.gradle.kts')
+        target("*.gradle.kts")
+        ktlint()
+    }
+}

src/main/kotlin/pullpitok/App.kt

@@ -1,10 +1,10 @@
 package pullpitok
 
+import kotlin.system.exitProcess
 import pullpitok.github.Action
 import pullpitok.github.Event
 import pullpitok.github.EventClient
 import pullpitok.github.Type
-import kotlin.system.exitProcess
 
 fun main(args: Array<String>) {
     if (invalidArguments(args)) {
@@ -44,8 +44,9 @@ private fun perAuthor(events: List<Event>): Map<String, List<Event>> = events
         .groupBy { it.actor.login }
 
 internal fun counters(
-        eventsPerAuthor: Map<String, List<Event>>,
-        predicate: (Event) -> Boolean): String {
+    eventsPerAuthor: Map<String, List<Event>>,
+    predicate: (Event) -> Boolean
+): String {
     eventsPerAuthor.entries
     var counters = ""
     for (events in eventsPerAuthor.entries) {

src/main/kotlin/pullpitok/github/EventClient.kt

@@ -39,5 +39,4 @@ class EventClient {
     }
 
     private fun fail(message: String): Nothing = throw IllegalArgumentException(message)
-
 }

src/test/kotlin/pullpitok/AppTest.kt

@@ -1,12 +1,12 @@
 package pullpitok
 
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 import org.junit.Test
 import pullpitok.github.Actor
 import pullpitok.github.Event
 import pullpitok.github.Payload
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
 
 class AppTest {
 
@@ -38,5 +38,4 @@ class AppTest {
         assertFalse(invalidArguments(arrayOf("org/repo")))
         assertFalse(invalidArguments(arrayOf("org/repo", "token")))
     }
-
 }

src/test/kotlin/pullpitok/github/EventClientTest.kt

@@ -1,7 +1,7 @@
 package pullpitok.github
 
-import org.junit.Test
 import kotlin.test.assertEquals
+import org.junit.Test
 
 class EventClientTest {
 
@@ -28,5 +28,4 @@ class EventClientTest {
     }
 
     private fun loadJsonEventFile() = EventClientTest::class.java.getResource("/events.json").readText()
-
 }