CLI: add version flag to show version information of the app and the …

…connector plugin

app/build.gradle.kts

@@ -1,9 +1,14 @@
+import org.apache.tools.ant.filters.ReplaceTokens
+
 plugins {
     id("dga.application-conventions")
 }
 
 description = "CLI application project"
 
+group = "ch.addere.dga.app"
+version = property("cliVersion").toString()
+
 dependencies {
     implementation(project(":core"))
     implementation(project(":importer"))
@@ -26,3 +31,18 @@ distributions {
 tasks.withType<CreateStartScripts> {
     applicationName = "dga"
 }
+
+val cliVersion = property("cliVersion").toString()
+val connectorPluginVersion = property("connectorPluginVersion").toString()
+
+tasks.withType<Jar> {
+    filesMatching("versions.txt") {
+        filter(
+            ReplaceTokens::class,
+            "tokens" to mapOf(
+                "cliVersion" to cliVersion,
+                "pluginVersion" to connectorPluginVersion
+            )
+        )
+    }
+}

app/src/main/kotlin/ch/addere/dga/app/App.kt

@@ -8,6 +8,7 @@ import ch.addere.dga.app.infrastructure.factory.coreModule
 import ch.addere.dga.app.infrastructure.factory.dgaModule
 import ch.addere.dga.app.infrastructure.factory.importerModule
 import ch.addere.dga.app.infrastructure.factory.userInputModule
+import ch.addere.dga.app.infrastructure.service.AppVersionService
 import ch.addere.dga.core.domain.model.Configuration
 import ch.addere.dga.core.domain.model.Module
 import com.github.ajalt.clikt.core.CliktCommand
@@ -26,6 +27,7 @@ import com.github.ajalt.clikt.parameters.options.flag
 import com.github.ajalt.clikt.parameters.options.help
 import com.github.ajalt.clikt.parameters.options.option
 import com.github.ajalt.clikt.parameters.options.split
+import com.github.ajalt.clikt.parameters.options.versionOption
 import com.github.ajalt.clikt.parameters.types.file
 import org.koin.core.component.KoinComponent
 import org.koin.core.component.get
@@ -37,6 +39,17 @@ import kotlin.system.exitProcess
 private class Dga : CliktCommand(help = "Analyse the module dependency graph of a Gradle project."),
     KoinComponent {
 
+    private val appVersionService = AppVersionService()
+
+    init {
+        val appVersion = appVersionService.readVersions()
+        val versionOutput = """
+            ${appVersion.cli}
+            dga connector plugin version ${appVersion.plugin}
+        """.trimIndent()
+        versionOption(versionOutput, names = setOf("--version", "-v"))
+    }
+
     private val gradleProject: File by argument()
         .file()
         .help("Path of the Gradle project directory")
@@ -64,7 +77,6 @@ private class Dga : CliktCommand(help = "Analyse the module dependency graph of
         name = "Display Options",
     ).single().default(OutputOptions.OutputOptionOverviewOnly)
 
-
     override fun run() {
         val filterConfig = FilterConfig(
             optionsFilter.modules,

app/src/main/kotlin/ch/addere/dga/app/domain/model/AppVersion.kt

@@ -0,0 +1,3 @@
+package ch.addere.dga.app.domain.model
+
+data class AppVersion(val cli: String, val plugin: String)

app/src/main/kotlin/ch/addere/dga/app/infrastructure/service/AppVersionService.kt

@@ -0,0 +1,16 @@
+package ch.addere.dga.app.infrastructure.service
+
+import ch.addere.dga.app.domain.model.AppVersion
+
+class AppVersionService {
+
+    fun readVersions(): AppVersion {
+        val a = javaClass.getResource("/versions.txt")!!.readText().split("\n")
+            .filter { it.isNotEmpty() }
+        val b = a.associate {
+            val (component, version) = it.split("=")
+            component.trim() to version.trim()
+        }.toMap()
+        return AppVersion(b["cli"]!!, b["plugin"]!!)
+    }
+}

app/src/main/resources/versions.txt

@@ -0,0 +1,2 @@
+cli=@cliVersion@
+plugin=@pluginVersion@

core/build.gradle.kts

@@ -3,3 +3,6 @@ plugins {
 }
 
 description = "Core logic for analysing dependency graphs"
+
+group = "ch.addere.dga.core"
+version = property("cliVersion").toString()

gradle.properties

@@ -2,4 +2,5 @@
 # https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties
 org.gradle.parallel=true
 org.gradle.caching=true
+cliVersion=0.1.2-SNAPSHOT
 connectorPluginVersion=0.1.5

importer/build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 }
 
 group = "ch.addere.dga.importer"
-version = "0.1.0"
+version = property("cliVersion").toString()
 
 description = "Imports project information of to be analysed Gradle project"