Outsource release tooling into script

.gitlab/scripts/release.sh

+#!/usr/bin/env bash
+
+set -o errexit
+set -o errtrace
+
+if [ -z "$1" ]; then
+  echo "Error: please provide a version for this release as the first argument." >&2
+  exit 1
+fi
+
+if [ -z "${GITLAB_TOKEN}" ]; then
+  echo "Error: please set the GITLAB_TOKEN environment variable." >&2
+  exit 1
+fi
+
+if [ "main" = "$(shell git rev-parse --abbrev-ref HEAD)" ]; then
+  echo "Error: please checkout the main branch first: git checkout main." >&2
+  exit 1
+fi
+
+script_dir=$(dirname "$0")
+version="$1"
+
+echo "Verifying release version '${version}' ..."
+echo "${version}" | "${script_dir}/check-semantic-version.sh"
+
+echo "Starting release process for ${version} ..."
+
+echo "Determing last stable version ..."
+last_stable_version_sha="$(git describe --tags --match '*.*.*' | xargs git rev-list -n1)"
+echo "Using commit '${last_stable_version_sha}' to start the changelog from ..."
+
+echo "Creating changelog ..."
+curl \
+  --fail-with-body \
+  --request POST \
+  --header "PRIVATE-TOKEN: ${GITLAB_TOKEN}" \
+  --header 'Content-Type: application/json' \
+  'https://gitlab.com/api/v4/projects/components%2Fopentofu/repository/changelog' \
+  --data "
+  {
+    \"version\": \"${version}\",
+    \"from\": \"${last_stable_version_sha}\",
+    \"message\": \"Add changelog for ${version}\"
+  }"
+
+echo "Pulling changelog ..."
+git pull
+
+echo "Tagging ${version} ..."
+git tag "${version}"
+
+echo "Pushing tag ${version} ..."
+
+git push origin "${version}"
+
+echo "Created tag ${version}, pipeline triggered, release will be available soon!"

Makefile

+RELEASE_SCRIPT = ./.gitlab/scripts/release.sh
+
+.PHONY: all
 all: docs
 
 .PHONY: docs
@@ -17,17 +20,4 @@ docs:
 
 .PHONY: release
 release:
-	@[ -n "$(VERSION)" ] || (echo "Please provide a VERSION argument for this release" && false)
-	echo "Starting release process for $(VERSION) ..."
-	@echo "$(VERSION)" | ./.gitlab/scripts/check-semantic-version.sh
-	@[ "main" = "$(shell git rev-parse --abbrev-ref HEAD)" ] || (echo "Please checkout the main branch first: git checkout main" && false)
-	@[ -n "$(GITLAB_TOKEN)" ] || (echo "Please set the GITLAB_TOKEN environment variable" && false)
-	@echo "Creating changelog ..."
-	@curl --fail-with-body --request POST --header "PRIVATE-TOKEN: $(GITLAB_TOKEN)" 'https://gitlab.com/api/v4/projects/components%2Fopentofu/repository/changelog' --data "version=$(VERSION)&message=Add changelog for $(VERSION)"
-	@echo "Pulling changelog ..."
-	@git pull
-	@echo "Tagging $(VERSION) ..."
-	@git tag $(VERSION)
-	@echo "Pushing tag $(VERSION) ..."
-	@git push origin $(VERSION)
-	@echo "Created tag $(VERSION), pipeline triggered, release will be available soon!"
+	$(RELEASE_SCRIPT) $(VERSION)