import subprocess
import requests
import smtplib

from config import config
from email.message import EmailMessage
from datetime import datetime
from config import config
from multiprocessing import Process
from os.path import basename

def tts_command(text):
    if config["engine"]["tts"] == "espeak":
        return ["espeak", text]
    elif config["engine"]["tts"] == "festival":
        filename = "/tmp/phone_input.txt"
        with open(filename, "w") as f:
            f.write(text)
        return ["festival", "--tts", filename]

class Event():
    def __init__(self, phone, args):
        self.args = args
        self.phone = phone

    def get_name(self):
        return "generic event"

    def get_text(self):
        return "event"

    def run(self):
        self.phone.run_until_hangup(tts_command(self.get_text()))


class FortuneEvent(Event):
    def get_name(self):
        return "fortune"

    def get_text(self):
        res = subprocess.run(["fortune", "-s"], stdout=subprocess.PIPE)
        return res.stdout.decode("utf-8")


class DirectoryEvent(Event):
    def get_name(self):
        return "directory"

    def get_text(self):
        def recursive_build(prefix, sequences):
            sequence_list = []
            for key in sequences.keys():
                sequence = prefix+" "+str(key)
                if isinstance(sequences[key], dict):
                    sequence_list += recursive_build(sequence, sequences[key])
                else:
                    sequence_list.append((sequence, sequences[key]))
            return sequence_list
        sequences = self.phone.dial_manager.sequences
        text = ""
        for sequence, event in recursive_build("", sequences):
            text += f"For {event.get_name()} dial {sequence}. "
        return text


class OperatorEvent(Event):
    def get_name(self):
        return "operator"

    def run(self):
        loop = True
        while loop:
            now = datetime.now()
            nearest_quarter = ((now.minute // 15 + 1) * 15) % 60
            next_hour = now.hour % 12 if nearest_quarter != 0 else (now.hour + 1) % 12
            next_hour = next_hour if next_hour != 0 else 12
            text = f"In {nearest_quarter - now.minute} minutes it will be {next_hour} {nearest_quarter}"
            commands = [tts_command(text), ["aplay", "/etc/phone/sound/hold.wav"]]
            self.phone.run_many_until_hangup(commands)


class WeatherEvent(Event):
    def get_name(self):
        return "weather"

    def get_text(self):
        key = config["openweathermap"]["key"]
        lat = config["openweathermap"]["lat"]
        lon = config["openweathermap"]["lon"]
        location = config["openweathermap"]["location"]
        units = config["openweathermap"]["units"]
        onecall_url = f"https://api.openweathermap.org/data/2.5/onecall?lat={lat}&lon={lon}&appid={key}&units={units}"
        onecall = requests.get(onecall_url).json()
        current_temp = onecall["current"]["temp"]
        current_desc = onecall["current"]["weather"][0]["description"]
        weather = f"In {location}, it is {current_temp} degrees with {current_desc}. "
        high_temp = onecall["daily"][0]["temp"]["max"]
        pop = onecall["daily"][0]["pop"] * 100
        forecast = f"Today there is a high of {high_temp} with a {pop} percent chance of percipitation."
        return f"{weather}{forecast}"


class RecordEvent(Event):
    def get_name(self):
        return "recorder"

    def run(self):
        self.phone.run_until_hangup(tts_command("Please record a message."))
        process = subprocess.Popen(["arecord", config["engine"]["filename"]])
        self.phone.wait_until_hung_up()
        process.terminate()
        self._send_recording()
        return ""

    def _send_recording(self):
        msg = EmailMessage()
        msg["Subject"] = "Phone Recording"
        msg["From"] = config["email"]["user"]
        msg["To"] = config["email"]["user"]
        msg.set_content("Attached is your message.")
        with open(config["engine"]["filename"], 'rb') as f:
            data = f.read()
            msg.add_attachment(data, maintype="audio", subtype="wav", filename="recording.wav")

        s = smtplib.SMTP(config["email"]["server"], int(config["email"]["port"]))
        s.starttls()
        s.login(config["email"]["user"], config["email"]["pass"])
        s.send_message(msg)
        s.quit()

class PlayEvent(Event):
    def get_name(self):
        return "play"

    def run(self):
        self.phone.run_until_hangup(["aplay", config["engine"]["filename"]])

class WavEvent(Event):
    def get_name(self):
        return basename(self.args[0])

    def run(self):
        self.phone.run_until_hangup(["aplay", self.args[0]])