update ArchUnit-Examples dependencies on release

We automatically keep the code of the separate ArchUnit-Examples repository
in sync with the `archunit-example` module in this repository.
However, sometimes an example makes an update of the dependencies necessary
(as seen in 1d1a990).
Up to now this made it necessary to manually update the dependencies in ArchUnit-Examples,
or the release will fail when testing the updated ArchUnit-Examples.
We now keep the (production) dependencies of ArchUnit-Examples automatically in sync
with the `archunit-example` module.

Since ArchUnit-Examples should be purely driven from this repository,
I think it's an okay compromise to simply keep a static template here
and fully overwrite the build file.
Changes to the root build file should always be controlled from this repository.

Signed-off-by: Peter Gafert <[email protected]>

build-steps/release/archunit-examples-utils.gradle

@@ -1,12 +1,47 @@
+import groovy.transform.Field
+
 ext.archunitExamplesGitRepo = 'TNG/ArchUnit-Examples.git'
 ext.updateArchUnitExampleVersion = { File archUnitExampleDir ->
     fileTree(archUnitExampleDir) {
         include '**/build.gradle'
-    }.each {File buildFile ->
+    }.each { File buildFile ->
         buildFile.text = buildFile.text.replaceAll(/(com\.tngtech\.archunit:archunit[^:]*:)[\w.-]*/, "\$1${version}")
     }
 }
 ext.updateArchUnitExampleSources = { File targetArchUnitExampleDir ->
+    updateArchUnitExampleDependencies(targetArchUnitExampleDir)
+    updateArchUnitExampleJavaSources(targetArchUnitExampleDir)
+}
+
+@Field
+String archUnitExamplesRootBuildFileContent = """
+subprojects {
+    apply plugin: 'java-library'
+
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        // These are the 'production' dependencies of the Demo src/main/java files -> just for Demo purposes, otherwise irrelevant
+#{dependencies}
+    }
+}
+""".trim()
+
+private void updateArchUnitExampleDependencies(File targetArchUnitExampleDir) {
+    def buildFile = new File(targetArchUnitExampleDir, 'build.gradle')
+
+    List<Map<String, String>> sortedDependencies = archUnitExamplesMainDependencies.collect()
+            .sort { first, second -> first.group <=> second.group ?: first.name <=> second.name }
+    def dependencyIndent = ' ' * 8
+    List<String> dependencyLines = sortedDependencies
+            .collect { "${dependencyIndent}implementation '${it.group}:${it.name}:${it.version}'".toString() }
+
+    buildFile.text = archUnitExamplesRootBuildFileContent.replace('#{dependencies}', dependencyLines.join('\n')) // always Unix line separator
+}
+
+private List updateArchUnitExampleJavaSources(File targetArchUnitExampleDir) {
     ['example-plain', 'example-junit4', 'example-junit5'].each { exampleFolder ->
         def targetSource = new File(new File(targetArchUnitExampleDir, exampleFolder), 'src')
         targetSource.deleteDir()

buildSrc/src/main/groovy/archunit.java-examples-conventions.gradle

@@ -10,16 +10,20 @@ archUnitTest {
     providesTestJar = true
 }
 
+rootProject.ext.archUnitExamplesMainDependencies = [
+        dependency.jodaTime,
+        dependency.javaxAnnotationApi,
+        dependency.jakartaInject,
+        dependency.jakartaAnnotations,
+        dependency.springBeans,
+        dependency.guice,
+        dependency.geronimoEjb,
+        dependency.geronimoJpa
+]
+
 dependencies {
     // `api` dependencies so we can access them within `archunit-integration-test`
-    api dependency.jodaTime
-    api dependency.javaxAnnotationApi
-    api dependency.jakartaInject
-    api dependency.jakartaAnnotations
-    api dependency.springBeans
-    api dependency.guice
-    api dependency.geronimoEjb
-    api dependency.geronimoJpa
+    archUnitExamplesMainDependencies.each { api it }
 
     testImplementation project(path: ':archunit')
 }