From f87ff36be4f7bf5f20abeb184f00d35944934d86 Mon Sep 17 00:00:00 2001
From: Patrick Decat <patrick.decat@fr.clara.net>
Date: Tue, 26 Oct 2021 14:56:22 +0200
Subject: [PATCH] TER-486: script release process

---
 README.md          | 33 +++++++++---------
 scripts/release.sh | 84 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+), 18 deletions(-)
 create mode 100755 scripts/release.sh

diff --git a/README.md b/README.md
index 118a36d4..5f9ec953 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@
   - [README TOC](#readme-toc)
   - [Using terraform development builds](#using-terraform-development-builds)
   - [git pre-commit hooks](#git-pre-commit-hooks)
-  - [Publishing new releases to PyPI](#publishing-new-releases-to-pypi)
+  - [Tagging and publishing new releases to PyPI](#tagging-and-publishing-new-releases-to-pypi)
 
 <!--TOC-->
 
@@ -666,31 +666,28 @@ If updating hooks configuration, run checks against all files to make sure every
 
 Note: the `pre-commit` tool itself can be installed with `pip` or `pipx`.
 
-## Publishing new releases to PyPI
+## Tagging and publishing new releases to PyPI
 
-Bump the version with poetry:
+Use the `scripts/release.sh` script from `master` branch to:
 
-```bash
-# poetry version [patch|minor|major|prepatch|preminor|premajor|prerelease]
-```
-
-Commit, tag and push this change to Github, then publish the release to test.pypi.org for validation:
+- bump the version with poetry,
+- update `CHANGELOG.md`,
+- commit these changes,
+- tag with last CHANGELOG.md item content as annotation,
+- bump the version with poetry again to mark it for development,
+- commit this change,
+- push all commits and tags to all remote repositories.
 
-```bash
-# poetry config repositories.testpypi https://test.pypi.org/legacy/
-# poetry publish --build --repository testpypi
-```
+This will trigger a Github Actions job to publish packages to PyPI.
 
-If all is ok, publish to pypi.org:
+To invoke the script, pass it the desired bump rule, e.g.:
 
 ```bash
-# poetry publish --build
+# ./scripts/release.sh minor
 ```
 
-Bump the version with poetry again in master to mark it for development:
+For more options, check the help:
 
 ```bash
-# poetry version prerelease
+# ./scripts/release.sh --help
 ```
-
-TODO: automate this process with Github Actions
diff --git a/scripts/release.sh b/scripts/release.sh
new file mode 100755
index 00000000..b0470e09
--- /dev/null
+++ b/scripts/release.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# set -x # TO REMOVE
+
+VERSION=$1
+
+set -euo pipefail
+
+request_approval_to_continue() {
+    echo
+    echo $1
+    echo
+    echo 'Continue with release? Only "yes" will be accepted to approve.'
+    read CONTINUE
+    [ "$CONTINUE" == "yes" ] || exit 1
+}
+
+show_help () {
+    echo Usage: $0 VERSION
+    echo
+    echo VERSION should ideally be a valid semver string or a valid bump rule: patch, minor, major, prepatch, preminor, premajor, prerelease.
+    exit 0
+}
+
+show_git_diff_staged() {
+    echo
+    echo Current staged diff:
+    echo
+    git diff --staged
+}
+
+# Show help if needed
+([ "$VERSION" == "-h" ] || [ "$VERSION" == "--help" ] || [ "$VERSION" == "" ]) && show_help
+
+# Ensure we are on master branch (we do not backport fixes for older major versions yet)
+[ "$(git rev-parse --abbrev-ref HEAD)" == "master" ] || (echo ERROR: not on "master" branch, aborting. && exit 1)
+
+# Ensure pyproject.toml and CHANGELOG.md do not have unstaged modifications
+git diff --exit-code CHANGELOG.md &> /dev/null || (echo ERROR: CHANGELOG.md file has unstaged changes, aborting. && exit 1)
+git diff --exit-code pyproject.toml &> /dev/null || (echo ERROR: pyproject.toml file has unstaged changes, aborting. && exit 1)
+
+# Bump the version with poetry and re-read it
+poetry version $VERSION
+VERSION=$(poetry version --short)
+
+request_approval_to_continue "New version will be: $VERSION"
+
+# Update `CHANGELOG.md` (TODO: generate it from JIRA issue ids?)
+sed -i "1 i\# ${VERSION} ($(date +'%Y/%m/%d'))\n\n" CHANGELOG.md
+vi CHANGELOG.md
+CHANGELOG=$(sed '2,${/^#/Q}' CHANGELOG.md)
+
+git add pyproject.toml CHANGELOG.md
+show_git_diff_staged
+
+request_approval_to_continue "Ready to commit"
+
+# Commit these changes
+git commit -m "Release v$VERSION"
+
+request_approval_to_continue "Ready to create annotated tag"
+
+# Tag with last CHANGELOG.md item content as annotation
+sed '2,${/^#/Q}' CHANGELOG.md | git tag -a -F- v$VERSION
+
+# Bump the version with poetry again to mark it for development
+echo
+echo Bump the version with poetry again to mark it for development
+echo
+poetry version prerelease
+VERSION=$(poetry version --short)
+
+git add pyproject.toml
+show_git_diff_staged
+
+request_approval_to_continue "Ready to commit"
+
+# Commit this changes
+git commit -m "Develop v$VERSION"
+
+request_approval_to_continue "Ready to push to all remote repositories. On GitHub, this will trigger a Github Actions job to publish packages to PyPI"
+
+# FIXME: uncomment when ready
+# for remote in $(git remote); do git push $remote --follow-tags ; done