#!/usr/bin/env python3

"""

Keep the 10 newest posts in /blog (by filename date DDMMYYYY-*.md) and move older

ones to /old_posts/YYYY/MM/.

"""

import os, re, sys, shutil, pathlib

BLOG_DIR = "blog"

ARCHIVE_ROOT = "old_posts"

if not os.path.exists(BLOG_DIR):

sys.exit(0)

entries = []

for name in os.listdir(BLOG_DIR):

if re.match(r"^\d{8}-.*\.md$", name):

if name.startswith("31082025-Welcome"):

continue

dmy = name[:8]

dd, mm, yyyy = dmy[0:2], dmy[2:4], dmy[4:8]

ymd = f"{yyyy}{mm}{dd}"

entries.append({"name": name, "yyyy": yyyy, "mm": mm, "ymd": ymd})

entries.sort(key=lambda e: e["ymd"], reverse=True)

to_move = entries[10:]

for e in to_move:

src = os.path.join(BLOG_DIR, e["name"])

dest_dir = os.path.join(ARCHIVE_ROOT, e["yyyy"], e["mm"])

pathlib.Path(dest_dir).mkdir(parents=True, exist_ok=True)

dest = os.path.join(dest_dir, e["name"])

if os.path.exists(src):

shutil.move(src, dest)

print(f"Moved {src} -> {dest}")