Add script create GH release

Signed-off-by: Manuel Mendez <[email protected]>

Author: mmlb

tooling/release.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+tag=$1
+if [[ -z ${tag:-} ]] || (($# != 1)); then
+	echo 'tag must be provided as the only cli arg' >&2
+	exit 1
+fi
+if ! git tag | grep -q "^$tag$"; then
+	echo "$tag is not a git tag" >&2
+	exit 1
+fi
+
+ghnotes=$(
+	gh api \
+		--method POST \
+		--header "Accept: application/vnd.github+json" \
+		--header "X-GitHub-Api-Version: 2022-11-28" \
+		--field "tag_name=$tag" \
+		--jq .body \
+		repos/{owner}/{repo}/releases/generate-notes
+)
+
+range=$(awk -F/ 'END {print $NF}' <<<"$ghnotes")
+fullchangelog=$(tail -n1 <<<"$ghnotes")
+ghnotes=$(head -n -2 <<<"$ghnotes)")
+diffstat=$(git diff --stat "$range")
+shortlog=$(git shortlog -w0 --no-merges "$range")
+
+gh release create "$tag" --notes "
+$ghnotes
+
+$diffstat
+
+$shortlog
+
+$fullchangelog
+"