From 0e65c12dd2843dd005d18b31b102aec7056b905d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Kautler?= <Bjoern@Kautler.net>
Date: Mon, 19 Aug 2024 17:07:54 +0200
Subject: [PATCH] fix(abg): provide a checksum for maven metadata or consumers
 are unhappy

---
 .../workflows/mavenbinding/Md5Checksum.kt             | 11 +++++++++++
 .../mavenbinding/PackageArtifactsBuilding.kt          |  1 +
 .../mavenbinding/VersionArtifactsBuilding.kt          |  9 ---------
 3 files changed, 12 insertions(+), 9 deletions(-)
 create mode 100644 maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/Md5Checksum.kt

diff --git a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/Md5Checksum.kt b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/Md5Checksum.kt
new file mode 100644
index 0000000000..fa9bee4123
--- /dev/null
+++ b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/Md5Checksum.kt
@@ -0,0 +1,11 @@
+package io.github.typesafegithub.workflows.mavenbinding
+
+import java.security.MessageDigest
+
+internal fun ByteArray.md5Checksum(): String {
+    val md5 = MessageDigest.getInstance("MD5")
+    val hashBytes = md5.digest(this)
+    return hashBytes.joinToString("") { "%02x".format(it) }
+}
+
+internal fun String.md5Checksum(): String = this.toByteArray(charset = Charsets.UTF_8).md5Checksum()
diff --git a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/PackageArtifactsBuilding.kt b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/PackageArtifactsBuilding.kt
index d26cad6de4..9f1bb4ed8c 100644
--- a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/PackageArtifactsBuilding.kt
+++ b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/PackageArtifactsBuilding.kt
@@ -6,5 +6,6 @@ suspend fun ActionCoords.buildPackageArtifacts(githubToken: String): Map<String,
     val mavenMetadata = buildMavenMetadataFile(owner = owner, name = name, githubToken = githubToken)
     return mapOf(
         "maven-metadata.xml" to mavenMetadata,
+        "maven-metadata.xml.md5" to mavenMetadata.md5Checksum(),
     )
 }
diff --git a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
index eb9800c4a4..bb58eef076 100644
--- a/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
+++ b/maven-binding-builder/src/main/kotlin/io/github/typesafegithub/workflows/mavenbinding/VersionArtifactsBuilding.kt
@@ -1,7 +1,6 @@
 package io.github.typesafegithub.workflows.mavenbinding
 
 import io.github.typesafegithub.workflows.actionbindinggenerator.domain.ActionCoords
-import java.security.MessageDigest
 
 sealed interface Artifact
 
@@ -28,11 +27,3 @@ fun ActionCoords.buildVersionArtifacts(): Map<String, Artifact>? {
         "$name-$version.module.md5" to TextArtifact(module.md5Checksum()),
     )
 }
-
-private fun ByteArray.md5Checksum(): String {
-    val md5 = MessageDigest.getInstance("MD5")
-    val hashBytes = md5.digest(this)
-    return hashBytes.joinToString("") { "%02x".format(it) }
-}
-
-private fun String.md5Checksum(): String = this.toByteArray(charset = Charsets.UTF_8).md5Checksum()