From 2d7738a4fc271411d3cfd4b7086fd4d41d23b590 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tibor=20=C5=A0imko?= <tibor.simko@cern.ch>
Date: Wed, 10 Jan 2024 16:24:16 +0100
Subject: [PATCH] ci(commitlint): addition of commit message linter (#191)

Adds commitlint to check the commit message style against agreed
conventional commits configuration.

Changes script argument values to always use linter names (e.g.
shellcheck).

Changes argument handling to allow only one checking action that can now
accept further optional arguments.
---
 .commitlintrc.yaml       | 21 ++++++++++++++
 .github/workflows/ci.yml | 30 ++++++++++++++++++--
 run-tests.sh             | 59 +++++++++++++++++++++++++---------------
 3 files changed, 86 insertions(+), 24 deletions(-)
 create mode 100644 .commitlintrc.yaml

diff --git a/.commitlintrc.yaml b/.commitlintrc.yaml
new file mode 100644
index 0000000..d0b3278
--- /dev/null
+++ b/.commitlintrc.yaml
@@ -0,0 +1,21 @@
+rules:
+  body-case: [2, always, sentence-case]
+  body-full-stop: [2, always]
+  body-leading-blank: [2, always]
+  body-max-line-length: [2, always, 72]
+  footer-leading-blank: [2, always]
+  footer-max-line-length: [2, always, 72]
+  header-max-length: [2, always, 72]
+  scope-case: [2, always, lower-case]
+  subject-case:
+    - 2
+    - never
+    - [pascal-case, sentence-case, start-case, upper-case]
+  subject-empty: [2, never]
+  subject-full-stop: [2, never, "."]
+  type-case: [2, always, lower-case]
+  type-empty: [2, never]
+  type-enum:
+    - 2
+    - always
+    - [build, chore, ci, docs, feat, fix, perf, refactor, style, test]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e86a26..565dea8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,5 @@
 # This file is part of REANA.
-# Copyright (C) 2020, 2022 CERN.
+# Copyright (C) 2020, 2022, 2024 CERN.
 #
 # REANA is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -9,6 +9,32 @@ name: CI
 on: [push, pull_request]
 
 jobs:
+  lint-commitlint:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+
+      - name: Install commitlint
+        run: |
+          npm install conventional-changelog-conventionalcommits
+          npm install commitlint@latest
+
+      - name: Check commit message compliance of the recently pushed commit
+        if: github.event_name == 'push'
+        run: |
+          ./run-tests.sh --check-commitlint HEAD~1 HEAD
+
+      - name: Check commit message compliance of the pull request
+        if: github.event_name == 'pull_request'
+        run: |
+          ./run-tests.sh --check-commitlint ${{ github.event.pull_request.head.sha }}~${{ github.event.pull_request.commits }} ${{ github.event.pull_request.head.sha }}
+
   lint-shellcheck:
     runs-on: ubuntu-20.04
     steps:
@@ -18,7 +44,7 @@ jobs:
       - name: Runs shell script static analysis
         run: |
           sudo apt-get install shellcheck
-          ./run-tests.sh --check-shellscript
+          ./run-tests.sh --check-shellcheck
 
   lint-black:
     runs-on: ubuntu-20.04
diff --git a/run-tests.sh b/run-tests.sh
index efe556f..396b4dc 100755
--- a/run-tests.sh
+++ b/run-tests.sh
@@ -1,21 +1,36 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of REANA.
-# Copyright (C) 2018, 2019, 2020, 2023 CERN.
+# Copyright (C) 2018, 2019, 2020, 2023, 2024 CERN.
 #
 # REANA is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
 
-# Quit on errors
 set -o errexit
-
-# Quit on unbound symbols
 set -o nounset
 
-check_script () {
+check_shellcheck () {
     shellcheck run-tests.sh
 }
 
+check_commitlint () {
+    from=${2:-master}
+    to=${3:-HEAD}
+    npx commitlint --from="$from" --to="$to" --verbose
+    found=0
+    while IFS= read -r line; do
+        if echo "$line" | grep -qP "\(\#[0-9]+\)$"; then
+            echo "✔   PR number present in $line"
+        else
+            echo "✖   PR number missing in $line"
+            found=1
+        fi
+    done < <(git log "$from..$to" --format="%s")
+    if [ $found -gt 0 ]; then
+        exit 1
+    fi
+}
+
 check_pydocstyle () {
     pydocstyle reana_workflow_engine_serial
 }
@@ -49,7 +64,8 @@ check_docker_build () {
 }
 
 check_all () {
-    check_script
+    check_commitlint
+    check_shellcheck
     check_pydocstyle
     check_black
     check_flake8
@@ -65,18 +81,17 @@ if [ $# -eq 0 ]; then
     exit 0
 fi
 
-for arg in "$@"
-do
-    case $arg in
-        --check-shellscript) check_script;;
-        --check-pydocstyle) check_pydocstyle;;
-        --check-black) check_black;;
-        --check-flake8) check_flake8;;
-        --check-manifest) check_manifest;;
-        --check-sphinx) check_sphinx;;
-        --check-pytest) check_pytest;;
-        --check-dockerfile) check_dockerfile;;
-        --check-docker-build) check_docker_build;;
-        *)
-    esac
-done
+arg="$1"
+case $arg in
+    --check-commitlint) check_commitlint "$@";;
+    --check-shellcheck) check_shellcheck;;
+    --check-pydocstyle) check_pydocstyle;;
+    --check-black) check_black;;
+    --check-flake8) check_flake8;;
+    --check-manifest) check_manifest;;
+    --check-sphinx) check_sphinx;;
+    --check-pytest) check_pytest;;
+    --check-dockerfile) check_dockerfile;;
+    --check-docker-build) check_docker_build;;
+    *) echo "[ERROR] Invalid argument '$arg'. Exiting." && exit 1;;
+esac