#!/usr/bin/env python3
"""Minify CSS, JS, and HTML files in the deploy directory in-place."""

import re
import sys
from pathlib import Path

import rcssmin
import rjsmin

DEPLOY_DIR = Path("./deploy")


def minify_html_content(content):
    content = re.sub(r"<!--.*?-->", "", content, flags=re.DOTALL)  # remove comments
    content = re.sub(r">\s+<", "><", content)  # collapse whitespace between tags
    content = re.sub(r"\s{2,}", " ", content)  # collapse remaining whitespace
    return content.strip()


def minify_files():
    handlers = {
        ".css": lambda c: rcssmin.cssmin(c),
        ".js": lambda c: rjsmin.jsmin(c, keep_bang_comments=False),
        ".html": minify_html_content,
    }
    for file in DEPLOY_DIR.rglob("*"):
        handler = handlers.get(file.suffix)
        if not handler:
            continue
        content = file.read_text(encoding="utf-8")
        file.write_text(handler(content), encoding="utf-8")
        print(f"{file.suffix.upper().rjust(5)}: {file}")


if __name__ == "__main__":
    if not DEPLOY_DIR.exists():
        print(f"Error: deploy directory not found at {DEPLOY_DIR}", file=sys.stderr)
        sys.exit(1)

    print("Minifying assets...")
    minify_files()
    print("Done.")