1 files changed, 52 insertions, 0 deletions
diff --git a/scalalib/src/dependency/DependencyUpdatesImpl.scala b/scalalib/src/dependency/DependencyUpdatesImpl.scala
new file mode 100644
index 00000000..3bb94202
--- /dev/null
+++ b/scalalib/src/dependency/DependencyUpdatesImpl.scala
@@ -0,0 +1,52 @@
+package mill.scalalib.dependency
+
+import mill.define._
+import mill.scalalib.dependency.updates.{
+  DependencyUpdates,
+  ModuleDependenciesUpdates,
+  UpdatesFinder
+}
+import mill.scalalib.dependency.versions.VersionsFinder
+import mill.api.Ctx.{Home, Log}
+
+object DependencyUpdatesImpl {
+
+  def apply(ctx: Log with Home,
+            rootModule: BaseModule,
+            discover: Discover[_],
+            allowPreRelease: Boolean): Unit = {
+
+    // 1. Find all available versions for each dependency
+    val allDependencyVersions = VersionsFinder.findVersions(ctx, rootModule)
+
+    // 2. Extract updated versions from all available versions
+    val allUpdates = allDependencyVersions.map { dependencyVersions =>
+      UpdatesFinder.findUpdates(dependencyVersions, allowPreRelease)
+    }
+
+    // 3. Print the results
+    showAllUpdates(allUpdates)
+  }
+
+  private def showAllUpdates(updates: Seq[ModuleDependenciesUpdates]): Unit =
+    updates.foreach { dependencyUpdates =>
+      val module = dependencyUpdates.module.toString
+      val actualUpdates =
+        dependencyUpdates.dependencies.filter(_.updates.nonEmpty)
+      if (actualUpdates.isEmpty) {
+        println(s"No dependency updates found for $module")
+      } else {
+        println(s"Found ${actualUpdates.length} dependency update for $module")
+        showUpdates(actualUpdates)
+      }
+    }
+
+  private def showUpdates(updates: Seq[DependencyUpdates]): Unit =
+    updates.foreach { dependencyUpdate =>
+      val module = s"${dependencyUpdate.dependency.module}"
+      val allVersions =
+        (dependencyUpdate.currentVersion +: dependencyUpdate.updates.toList)
+          .mkString(" -> ")
+      println(s"  $module : $allVersions")
+    }
+}