import socketserver
import http.server
import json
import re

try:
    config_file = open('config.json', 'r')
except FileNotFoundError:
    print('Config file not found')
    exit()
config = json.load(config_file)

def do_shutdown():
    import subprocess
    import shlex
    command = shlex.split('sudo shutdown -h now')
    subprocess.call(command)
    
class MyHandler(http.server.SimpleHTTPRequestHandler):
    def do_POST(self):
        self.data_string = self.rfile.read(int(self.headers['Content-Length']))
        data = json.loads(self.data_string)
        
        if self.path == '/shutdown':
            match = False
            for keyword in config['shutdown_keywords']:
                if re.search(keyword, data['message']):
                    self.send_response(200)
                    self.end_headers()
                    self.wfile.write(b'Shutting down...')
                    print('Shutting down...')
                    do_shutdown()
                    match = True
                    return
                
            if not match:
                self.send_response(200)
                self.end_headers()
                self.wfile.write(b'Not shutting down')
                print('Not shutting down')
            
httpd = socketserver.TCPServer(('', 48080), MyHandler)
httpd.serve_forever()