From 66db7d20ccefee2f5cbee34eab5742c97fb4e134 Mon Sep 17 00:00:00 2001
From: Geoff Bourne <itzgeoff@gmail.com>
Date: Sat, 25 Oct 2025 22:40:15 -0500
Subject: [PATCH] paper: pick max build and not assume first is newest

---
 .../helpers/paper/PaperDownloadsClient.java   |  8 +++++++-
 .../projects_paper_versions_with_alphas.json  | 20 +++++++++----------
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/src/main/java/me/itzg/helpers/paper/PaperDownloadsClient.java b/src/main/java/me/itzg/helpers/paper/PaperDownloadsClient.java
index 4ae48a78..acf7a7dc 100644
--- a/src/main/java/me/itzg/helpers/paper/PaperDownloadsClient.java
+++ b/src/main/java/me/itzg/helpers/paper/PaperDownloadsClient.java
@@ -165,7 +165,7 @@ private Mono<VersionBuild> extractLatestVersionBuild(String project, RequestedCh
         return Flux.fromIterable(projectResponse.getVersions())
             .filter(versionResponse -> versionResponse.getBuilds() != null && !versionResponse.getBuilds().isEmpty())
             .concatMap(versionResponse ->
-                getBuild(project, versionResponse.getVersion().getId(), versionResponse.getBuilds().get(0))
+                getBuild(project, versionResponse.getVersion().getId(), getLatestBuild(versionResponse))
                     .map(buildResponse -> new VersionAndBuildResponse(versionResponse, buildResponse))
                 )
             .takeUntil(vAndB -> acceptableChannel(vAndB.buildResponse.getChannel(), requestedChannel))
@@ -173,6 +173,12 @@ private Mono<VersionBuild> extractLatestVersionBuild(String project, RequestedCh
             .map(vAndB -> new VersionBuild(vAndB.versionResponse.getVersion().getId(), vAndB.buildResponse.getId()));
     }
 
+    private static Integer getLatestBuild(VersionResponse versionResponse) {
+        return versionResponse.getBuilds().stream()
+            .max(Integer::compare)
+            .orElseThrow(() -> new GenericException("No builds found for version " + versionResponse.getVersion().getId()));
+    }
+
     private boolean acceptableChannel(Channel channel, RequestedChannel requestedChannel) {
         for (final Channel mapped : requestedChannel.getMappedTo()) {
             if (mapped.equals(channel)) {
diff --git a/src/test/resources/__files/paper/v3/projects_paper_versions_with_alphas.json b/src/test/resources/__files/paper/v3/projects_paper_versions_with_alphas.json
index e7a347dd..2b15aa0f 100644
--- a/src/test/resources/__files/paper/v3/projects_paper_versions_with_alphas.json
+++ b/src/test/resources/__files/paper/v3/projects_paper_versions_with_alphas.json
@@ -35,17 +35,17 @@
         }
       },
       "builds": [
-        49,
-        48,
-        47,
-        46,
-        45,
-        44,
-        42,
-        41,
-        40,
+        37,
         38,
-        37
+        40,
+        41,
+        42,
+        44,
+        45,
+        46,
+        47,
+        48,
+        49
       ]
     },
     {