#!/usr/bin/env -S python3 -u
from pathlib import Path
import subprocess

from util.server import Server
from util.csrf import get_csrf_token, verify_csrf_token
import util.status_file as status_file

STATUS_FILE_PATH='/umbrel-status'

def csrf(request):
    if not verify_csrf_token(request['post_data']['token']):
        raise Exception("Invalid CSRF token")

def get_relative_path(path):
    script_dir = Path(__file__).resolve().parent
    return str(script_dir.joinpath(path))

def run(command):
    if not status_file.contains_errors(STATUS_FILE_PATH):
        raise Exception("Running commands is disabled if there are no status errors")
    subprocess.run(command, check=True)

def main():
    server = Server(directory=get_relative_path('static'))
    server.get('/status', lambda _: status_file.parse(STATUS_FILE_PATH))
    server.get('/token', lambda _: get_csrf_token())
    server.post('/shutdown', csrf, lambda _: run(['poweroff']))
    server.post('/restart', csrf, lambda _: run(['reboot']))
    server.listen(8000)

main()