chore: implement version bump determination based on commit messages in update_git_version script

Author: d-biehl

scripts/tools.py

@@ -1,4 +1,5 @@
 import os
+import re
 from pathlib import Path
 from typing import NamedTuple, Optional
 
@@ -12,6 +13,52 @@ class GitDescribeVersion(NamedTuple):
     hash: Optional[str] = None
 
 
+def determine_version_bump(repo_path="."):
+    try:
+
+        repo = Repo(repo_path)
+        if repo.bare:
+            raise ValueError("Not a valid Git repository.")
+
+        tags = sorted(repo.tags, key=lambda t: t.commit.committed_date, reverse=True)
+        version_tags = [tag for tag in tags if tag.name.startswith("v")]
+        if not version_tags:
+            raise ValueError("No version tags found.")
+
+        last_tag = version_tags[0]
+        commits = repo.iter_commits(f"{last_tag.name}..HEAD")
+
+        ignored_types = ["chore", "style", "refactor", "test"]
+        patch_types = ["fix", "docs", "perf"]
+
+        minor_change = False
+        patch_change = False
+
+        for commit in commits:
+            message = commit.message.strip()
+
+            if any(re.match(rf"^{ignored_type}(\([^\)]+\))?:", message) for ignored_type in ignored_types):
+                continue
+
+            if "BREAKING CHANGE:" in message or re.match(r"^feat(\([^\)]+\))?!:", message):
+                return "major"
+
+            if re.match(r"^feat(\([^\)]+\))?:", message):
+                minor_change = True
+
+            if any(re.match(rf"^{patch_types}(\([^\)]+\))?:", message) for ignored_type in ignored_types):
+                patch_change = True
+
+        if minor_change:
+            return "minor"
+        if patch_change:
+            return "patch"
+        return None
+
+    except Exception as e:
+        raise RuntimeError(f"Error: {e}")
+
+
 def get_current_version_from_git() -> Version:
     repo = Repo(Path.cwd())
 
@@ -21,7 +68,13 @@ def get_current_version_from_git() -> Version:
 
     version = Version(git_version.version[1:])
     if git_version.commits is not None and git_version.commits != "0":
-        version = version.next_patch()
+        next_version = determine_version_bump()
+        if next_version == "major":
+            version = version.next_major()
+        elif next_version == "minor":
+            version = version.next_minor()
+        elif next_version == "patch":
+            version = version.next_patch()
         version.prerelease = ("dev", git_version.commits)
 
     return version
@@ -34,3 +87,7 @@ def get_version() -> Version:
         return Version(os.environ["CZ_PRE_NEW_VERSION"])
 
     return get_current_version_from_git()
+
+
+if __name__ == "__main__":
+    print(get_version())