Merge pull request #4210 from anyproto/ios-2532-fix-comment-version-for-hotfix

IOS-2532 Fix Linear comment version diff for hotfix releases

Author: ignatovv

fastlane/FastfileDeploy

@@ -99,7 +99,31 @@ platform :ios do
     sh("git push origin refs/tags/#{tag_name} --no-verify --force")
 
     appInfo = settings[:app_info]
-    old_tag_name = sh("git describe --first-parent --tags --abbrev=0 HEAD~").chomp
+
+    # Determine the previous tag to use for diff generation in Linear comments
+    # This ensures hotfix releases (e.g., 0.41.1) correctly diff against the last build
+    # of the previous version (0.41.0/27) instead of finding an old tag from a different branch
+    if build_number.to_i > 1
+      # For incremental builds (e.g., 0.41.0/26 -> 0.41.0/27), use the previous build number
+      old_tag_name = "#{prefix}/#{version}/#{build_number.to_i - 1}"
+    else
+      # For the first build of a new version (e.g., 0.41.1/1), find the last tag of the previous patch version
+      # Get major.minor version (e.g., "0.41" from "0.41.1")
+      version_parts = version.split('.')
+      major_minor = "#{version_parts[0]}.#{version_parts[1]}"
+      current_patch = version_parts[2].to_i
+
+      # Get all tags for the current major.minor (e.g., all 0.41.x tags), sorted by version
+      all_version_tags = sh("git tag -l '#{prefix}/#{major_minor}.*/*' | sort -V").split("\n")
+
+      # Find tags for versions less than current patch, take the last one
+      previous_version_tags = all_version_tags.select do |t|
+        tag_patch = t.match(/#{Regexp.escape(prefix)}\/#{Regexp.escape(major_minor)}\.(\d+)\//)
+        tag_patch && tag_patch[1].to_i < current_patch
+      end
+
+      old_tag_name = previous_version_tags.last || tag_name
+    end
 
     add_linear_comment(
       from_tag: old_tag_name,