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from jinja2 import FileSystemLoader, Environment
from pathlib import Path
import os
import sys

if len(sys.argv) != 2:
    print(f"Usage: {sys.argv[0]} <path>")
    sys.exit(1)

ROOT_DIR = Path(sys.argv[1])
TEMPLATE_PATH_LIST = [ROOT_DIR, "templates/"]

loader = FileSystemLoader(searchpath=TEMPLATE_PATH_LIST)
environment = Environment(loader=loader, autoescape=True)

file_path_list = ROOT_DIR.glob("**/*.html")
template_file_list = [os.fspath(p.relative_to(ROOT_DIR)) for p in file_path_list]

for template_file in template_file_list:
    template = environment.get_template(template_file)
    rendered_template = template.render()
    path = os.path.join(ROOT_DIR, template_file)
    with open(path, mode="w") as f:
        f.write(rendered_template)