#!/usr/bin/env python3

import os
import sys
import getopt
import requests

from libs.pysignald.signald import Signal
from configparser import ConfigParser


def usage():
    print(os.path.basename(sys.argv[0]) + " [-h|--help] [-r|--register]")
    print("Runs the signal frontend to N. Reads the number to use from n_signal.ini")
    print("    -h|--help           prints this help and exits")
    print("    -r|--register       register the number with signal")


def read_config():
    config_object = ConfigParser()
    # config_object.read(os.environ.get('XDG_CONFIG_HOME') + "/n_signal.ini")
    config_object.read("n_signal.ini")

    info = config_object["INFO"]

    return info["number"]


def register_signald(number):
    s = Signal(number)
    s.register(voice=False)
    code = input(f"Please input register code send via sms to {number}: ")
    s.verify(code)


def handle_replies(replies):
    answer = ""
    for reply in replies:
        answer = reply['text']
        for annotation in reply["annotations"]:
            a_type = annotation["type"]
            a_extra = annotation["extra"]

            if a_type == "command":
                answer = f"/{answer}: {handle_replies(a_extra)}\n"
            elif a_type == "link":
                answer = f"{a_extra} ({answer})"
            elif a_type == "bold":
                answer = f"*{answer}*"
            elif a_type == "italic":
                answer = f"_{answer}_"
            elif a_type == "strikethrough":
                answer = f"~{answer}~"
    return answer


def handle_response(response):
    replies = response.json()['reply']
    return handle_replies(replies)


def startup(number):
    s = Signal(number)

    # with args
    @s.chat_handler("^/([^\\s]+)\\s+([^$]*)$", order=10)  # This is case-insensitive.
    def klinger(message, match):
        # Returning `False` as the first argument will cause matching to continue
        # after this handler runs.
        stop = True

        # TODO: try catch
        response = requests.post('http://localhost:18080',
                                 json={"command": match.group(1), "arguments": match.group(2).strip()})

        answer = handle_response(response)

        return stop, answer

    # no args
    @s.chat_handler("^/(.+)$", order=20)  # This is case-insensitive.
    def klinger(message, match):
        # Returning `False` as the first argument will cause matching to continue
        # after this handler runs.
        stop = True

        # TODO: try catch
        response = requests.post('http://localhost:18080',
                                 json={"command": match.group(1), "arguments": ""})

        answer = handle_response(response)

        return stop, answer

    s.run_chat()


def main():
    number = read_config()
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hr", ["help", "register"])
    except getopt.GetoptError as err:
        # print help information and exit:
        print(err)  # will print something like "option -a not recognized"
        usage()
        sys.exit(2)

    for o, a in opts:
        if o in ("-h", "--help"):
            usage()
            sys.exit()
        elif o in ("-r", "--register"):
            register_signald(number)
            sys.exit()
        else:
            assert False, "unhandled option: " + o
    startup(number)


if __name__ == "__main__":
    main()