#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
collatz_generate_progress_log.py

List audit files in a directory, summarize sizes and dates.
Outputs a journal.md file.

Usage: python collatz_generate_progress_log.py --audits-dir DIR --output journal.md
"""

from __future__ import annotations

import argparse
from pathlib import Path
from datetime import datetime


def run(audits_dir: str, output_path: str) -> None:
    """Generate progress log."""
    root = Path(audits_dir)
    if not root.exists():
        Path(output_path).write_text(
            f"# Audit progress log\n\nDirectory not found: {audits_dir}\n",
            encoding="utf-8",
        )
        return

    entries: list[tuple[str, int, str]] = []
    for p in sorted(root.iterdir()):
        if p.is_file():
            stat = p.stat()
            size = stat.st_size
            mtime = datetime.fromtimestamp(stat.st_mtime).strftime("%Y-%m-%d %H:%M")
            entries.append((p.name, size, mtime))

    lines = ["# Audit progress log", "", f"Source directory: {audits_dir}", ""]
    lines.append("| File | Size (bytes) | Modified |")
    lines.append("|------|------|----------|")
    for name, size, mtime in entries:
        lines.append(f"| {name} | {size} | {mtime} |")

    if not entries:
        lines.append("(no files)")

    Path(output_path).write_text("\n".join(lines) + "\n", encoding="utf-8")


def main() -> None:
    parser = argparse.ArgumentParser(description="Generate audit progress log")
    parser.add_argument("--audits-dir", required=True, help="Path to audits directory")
    parser.add_argument("--output", required=True, help="Path to output journal.md")
    args = parser.parse_args()
    run(args.audits_dir, args.output)


if __name__ == "__main__":
    main()