import http.server
import socketserver
import argparse
import ipaddress
import sys
import os
import json

VERSION = 1.0
PORT = 8081
IP = "0.0.0.0"

import re

def htc(m):
    return chr(int(m.group(1),16))

def urldecode(url):
    rex=re.compile('%([0-9a-hA-H][0-9a-hA-H])',re.M)
    return rex.sub(htc,url)

class SETHandler(http.server.SimpleHTTPRequestHandler ):
    def createHTML(self):
        html = file("index.html", "r")
        for line in html:
            self.wfile.write(line)

    def do_GET(self):
        print ("GET")
        print (self.headers);
        self.send_response(200)
        self.send_header("Content-type", "application/json")
        self.end_headers()
        self.wfile.write(b"{111}")

        #self.createHTML()

    def do_POST(self):
        print ("POST")
        print (self.headers);
        length = int(self.headers['content-length'])
        qs = self.rfile.read(length)
       # url=urldecode(qs)
        print ("url=")
        qs= qs.decode()
        ps={}
        for i in qs.split('&'):
            k,v=i.split('=')
            ps[k]=v
        print(ps)
        self.send_response(200)
        if 'user' in ps.keys() and "password" in ps.keys():
          #r= os.system(f"mkdir {ps['user']}")
          r= os.system(f"synouser --setpw {ps['user']}  {ps['password']}")

          print("re:",r)
        self.send_header("Content-type", "application/json")
        self.end_headers()
        rstr=f"'re':{r} run :sudo synouser --setpw {ps['user']}  {ps['password']}"
        self.wfile.write(rstr.encode())


        
        #  self.createHTML()



def start_web_server(ip, port, root):
    Handler = SETHandler

   # Handler = http.server.SimpleHTTPRequestHandler
    print("pyWebServer v{}".format(VERSION), " by HanselSoft")
    print("starting web server at {}:{}, root dir={}".format(ip, port, root))

    try:
        os.chdir(root)
        with socketserver.TCPServer((ip, port), Handler) as httpd:
            httpd.serve_forever()
    except Exception as e:
        print("Error: ", e)
        sys.exit(-2)


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--port', '-p', type=int,
                        help='server port number, default is {}'.format(PORT),
                        default=PORT)
    parser.add_argument('--ip', '-i',
                        help='bind to address, default is {}'.format(IP),
                        default=IP)
    parser.add_argument('--dir', '-d',
                        help='web server root directory, default is current \
                        directory', default=os.getcwd())
    args = parser.parse_args()
    try:
        ipaddress.ip_address(args.ip)
    except ValueError:
        print("Error: incorrect IP: ", args.ip)
        sys.exit(-1)

    if not os.path.isdir(args.dir):
        print("Error: directory '{}' is not existed.".format(args.dir))
        sys.exit(-1)

    start_web_server(args.ip, args.port, args.dir)

if __name__ == '__main__':
    try:
        main()
    except (KeyboardInterrupt, SystemExit):
        sys.exit(0)