From d63e65794863a2d4c8bb85ea597a872f4c0c04d3 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Sat, 17 Jun 2023 21:41:52 +0200
Subject: [PATCH] Support version transformation for GitHub tags

---
 lib/up2date.rb | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/lib/up2date.rb b/lib/up2date.rb
index c63d7c2..2b87b19 100644
--- a/lib/up2date.rb
+++ b/lib/up2date.rb
@@ -24,7 +24,7 @@ module SlackBuilder
     GITHUB_QUERY = <<~GQL
       query ($name: String!, $owner: String!) {
         repository(name: $name, owner: $owner) {
-          refs(last: 1, refPrefix: "refs/tags/", orderBy: { field: TAG_COMMIT_DATE, direction: ASC }) {
+          refs(last: 10, refPrefix: "refs/tags/", orderBy: { field: TAG_COMMIT_DATE, direction: ASC }) {
             nodes {
               id,
               name
@@ -35,11 +35,12 @@ module SlackBuilder
     GQL
     private_constant :GITHUB_QUERY
 
-    def initialize(owner, name)
+    def initialize(owner, name, version_transform = ->(x) { x })
       super()
 
       @owner = owner
       @name = name
+      @version_transform = version_transform
     end
 
     def latest
@@ -52,7 +53,16 @@ module SlackBuilder
         'content-type' => 'application/json',
         'authorization' => "Bearer #{CONFIG[:gh_token]}"
       }
-      JSON.parse(response.body)['data']['repository']['refs']['nodes'].first['name']
+      filter_versions_from_response JSON.parse(response.body)
+    end
+
+    private
+
+    def filter_versions_from_response(response)
+      response['data']['repository']['refs']['nodes']
+        .map { |node| @version_transform.call node['name'] }
+        .compact
+        .last
     end
   end