tests: update the PR description with the release notes draft

If the 'worth a release-note' label is set, add a release note entry
to the description of the pull request as a preview.

* use the `release-notes/<pr-number>.md` file if any
* otherwise use the pull request title

Refs: https://code.forgejo.org/forgejo/release-notes-assistant

1 files changed, 73 insertions, 0 deletions

diff --git a/release-notes-assistant.sh b/release-notes-assistant.sh
new file mode 100755
index 0000000000..4e15975340
--- /dev/null
+++ b/release-notes-assistant.sh
@@ -0,0 +1,73 @@
+#!/bin/bash
+# Copyright twenty-panda <twenty-panda@posteo.com>
+# SPDX-License-Identifier: MIT
+
+payload=$(mktemp)
+pr=$(mktemp)
+trap "rm $payload $pr" EXIT
+
+cat >$payload
+#
+# If this is a backport, refer to the original PR to figure
+# out the classification.
+#
+if $(jq --raw-output .IsBackportedFrom <$payload); then
+  jq --raw-output '.BackportedFrom[0]' <$payload >$pr
+else
+  jq --raw-output '.Pr' <$payload >$pr
+fi
+
+labels=$(jq --raw-output '.labels[].name' <$pr)
+
+#
+# Was this PR labeled `worth a release note`?
+#
+if echo "$labels" | grep --quiet worth; then
+  worth=true
+else
+  worth=false
+fi
+
+#
+# If there was no release-notes/N.md file and it is not
+# worth a release note, just forget about it.
+#
+if test -z "$(jq --raw-output .Draft <$payload)"; then
+  if ! $worth; then
+    echo -n ZA Included for completness but not worth a release note
+    exit 0
+  fi
+fi
+
+case "$labels" in
+*bug*)
+  if $(jq --raw-output .IsBackportedTo <$payload); then
+    #
+    # if it has been backported, it was in the release notes of an older stable release
+    # and does not need to be in this more recent release notes
+    #
+    echo -n ZB Already announced in the release notes of an older stable release
+    exit 0
+  fi
+  ;;
+esac
+
+case "$labels" in
+*breaking*)
+  case "$labels" in
+  *feature*) echo -n AA Breaking features ;;
+  *bug*) echo -n AB Breaking bug fixes ;;
+  *) echo -n ZC Breaking changes without a feature or bug label ;;
+  esac
+  ;;
+*forgejo/ui*)
+  case "$labels" in
+  *feature*) echo -n BA User Interface features ;;
+  *bug*) echo -n BB User Interface bug fixes ;;
+  *) echo -n ZD User Interface changes without a feature or bug label ;;
+  esac
+  ;;
+*feature*) echo -n CA Features ;;
+*bug*) echo -n CB Bug fixes ;;
+*) echo -n ZE Other changes without a feature or bug label ;;
+esac