From ded45716da7cc500fb3d8ebe1a55ea5036311490 Mon Sep 17 00:00:00 2001
From: Kazuya Takei <myself@attakei.net>
Date: Sat, 24 Feb 2024 01:13:22 +0900
Subject: [PATCH] doc: Ready to geneate changelog

---
 CHANGES.rst             | 14 ++++++++++++++
 pyproject.toml          |  1 +
 tools/release-commit.py | 39 ++++++++++++++++++++++++++++++++++++++-
 3 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 CHANGES.rst

diff --git a/CHANGES.rst b/CHANGES.rst
new file mode 100644
index 0000000..8221e31
--- /dev/null
+++ b/CHANGES.rst
@@ -0,0 +1,14 @@
+
+v0.0.3
+======
+
+:date: 2024-02-24 (JST)
+
+Features
+--------
+
+Bug fixes
+---------
+
+Miscellaneous
+-------------
diff --git a/pyproject.toml b/pyproject.toml
index c8f28ba..1333bec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,6 +49,7 @@ testpaths = ["tests"]
 [tool.rye]
 managed = true
 dev-dependencies = [
+    "jinja2~=3.1.0",
     "pytest~=8.0.1",
     "sphinx~=7.2.0",
     "sphinx-autobuild~=2024.2.4",
diff --git a/tools/release-commit.py b/tools/release-commit.py
index 6f8b38e..592d876 100755
--- a/tools/release-commit.py
+++ b/tools/release-commit.py
@@ -1,10 +1,14 @@
 #!/usr/bin/env python
 """Batch script to generate 'release' commit."""
 import argparse
+import shutil
 import subprocess
+from datetime import date
 from pathlib import Path
+from textwrap import dedent
 
 import tomllib
+from jinja2 import Template
 
 root = Path(__file__).parent.parent
 parser = argparse.ArgumentParser()
@@ -38,6 +42,39 @@ def replace_version(target, current_version: str, new_version: str):
     src.write_text("\n".join(lines))
 
 
+def update_changes(current_version: str, new_version: str):
+    """Generate changelog for new version.
+
+    Currently, this works only generate template.
+    """
+    CHANGELOG_TEMPLATE = Template(
+        dedent(
+            """
+        v{{version}}
+        ={{'=' * version|length}}
+
+        :date: {{now.strftime('%Y-%m-%d')}} (JST)
+
+        Features
+        --------
+
+        Bug fixes
+        ---------
+
+        Miscellaneous
+        -------------
+
+        """
+        )
+    )
+    now = date.today()
+    target = root / "CHANGES.rst"
+    move_to = root / "doc" / "changelogs" / f"v{current_version}.rst"
+    move_to.parent.mkdir(parents=True, exist_ok=True)
+    shutil.copy(target, move_to)
+    target.write_text(CHANGELOG_TEMPLATE.render(version=new_version, now=now))
+
+
 def main(args: argparse.Namespace):
     """Handle multi functions."""
     pyproject = tomllib.loads((root / "pyproject.toml").read_text())
@@ -47,7 +84,7 @@ def main(args: argparse.Namespace):
     print(f"Next version:    v{new_version}")
     for target in pyproject["tool"]["local"]["bumpversion"]["files"]:
         replace_version(target, current_version, new_version)
-    pass
+    update_changes(current_version, new_version)
 
 
 if __name__ == "__main__":