🔧 Devops: Add update_changelog.py script

.github/workflows/update_changelog.py

@@ -0,0 +1,90 @@
+#!/bin/bash
+"""Script for updating the `CHANGELOG.md` based on the commits since the latest release tag."""
+import re
+import subprocess
+from pathlib import Path
+
+DEFAULT_CHANGELOG_SECTIONS = """
+### ‼️ Breaking changes
+
+
+### ✨ New features
+
+
+### 🗑️ Deprecations
+
+
+### 👌 Improvements
+
+
+### 🐛 Bug fixes
+
+
+### 📚 Documentation
+
+
+### 🔧 Maintenance
+
+
+### ⬆️ Update dependencies
+
+
+### ♻️ Refactor
+
+"""
+
+
+def update_changelog():
+    """Update the `CHANGELOG.md` for a first draft of the release."""
+
+    print("🔍 Checking the current version number")
+    current_changelog = Path("CHANGELOG.md").read_text(encoding="utf-8")
+
+    from aiida_project import __version__
+
+    if str(__version__) in current_changelog:
+        print("🛑 Current version already in `CHANGELOG.md`. Skipping...")
+        return
+
+    print("⬆️ Found updated version number, adapting `CHANGELOG.md`.")
+    tags = subprocess.run(
+        ["git", "tag", "--sort=v:refname"], capture_output=True, check=True, encoding="utf-8"
+    ).stdout
+    latest_tag = re.findall(r"(v\d\.\d\.\d)\n", tags)[-1]
+
+    print(f"🔄 Comparing with latest tag `{latest_tag}`.")
+    commits = subprocess.run(
+        ["git", "log", "--pretty=format:'%h|%H|%s'", f"{latest_tag}..origin/main"],
+        capture_output=True,
+        check=True,
+        encoding="utf-8",
+    ).stdout
+
+    pr_pattern = re.compile(r"\(\S(?P<pr_number>\d+)\)")
+
+    changelog_message = f"## v{__version__}\n" + DEFAULT_CHANGELOG_SECTIONS
+
+    for commit in commits.splitlines():
+        # Remove the PR number from the commit message
+        pr_match = pr_pattern.search(commit)
+
+        if pr_match is not None:
+            pr_number = pr_match.groupdict()["pr_number"]
+            commit = commit.replace(rf"(#{pr_number})", "")
+
+        # Add the commit hash (short) to link to the changelog
+        commit = commit.strip("'")
+        hash_short, hash_long, message = commit.split("|", maxsplit=2)
+        message += (
+            f" [[{hash_short}](https://github.com/aiidateam/aiida-project/commit/{hash_long})]"
+        )
+        changelog_message += f"\n* {message}"
+
+    with Path("CHANGELOG.md").open("w", encoding="utf8") as handle:
+        handle.write(changelog_message + "\n\n" + current_changelog)
+
+    print("🚀 Success! Finalise the `CHANGELOG.md` and let's get this baby released.")
+
+
+if __name__ == "__main__":
+    update_changelog()