#!/bin/false
# Don't run directly, use gunicorn

from flask import Flask, request, escape, render_template
from flask_socketio import SocketIO, emit, send
import subprocess
import json
from datetime import datetime
from collections import defaultdict
import mpd
from urllib.parse import urlencode
import urllib.request
import base64
import requests

mpc = mpd.MPDClient()
mpc.timeout = 0.2


app = Flask(__name__)
# This is fine
socketio = SocketIO(app, cors_allowed_origins='*')
messages = []
last_sent = defaultdict(lambda: datetime(1970,1,1))

timeout = 1

class Message:
    def __init__(self, time, sender, sendertype, msg):
        self.time = time
        self.sender = sender
        self.sendertype = sendertype
        self.msg = msg


@app.route("/messages/")
def messages_get():
    try:
        mpc.connect("localhost", 6600)
        song = mpc.currentsong()
        status = mpc.status()
    except:
        status = {"state": "not connected"}
        song = {}
    try:
        mpc.disconnect()
    except:
        pass

    return render_template("chat.html", messages=messages[::-1], mpd_song=song, mpd_status=status)

@app.route("/reply/", methods = ["POST"])
def reply_post():
    if request.data:
        if "X-Username" in request.headers:
            sender = request.headers["X-Username"]
            sendertype = "name"
        elif "X-Real-IP" in request.headers:
            sender = request.headers["X-Real-IP"]
            sendertype = "ip"
        else:
            sender = "somebody"
            sendertype = "unknown"

        if sender[:6] == "abefor":
            sender = "abeforkelder"

        time = datetime.now()
        last_sent_from_ip = last_sent[sendertype + sender]

        last_sent[sendertype + sender] = time

        if (time-last_sent_from_ip).total_seconds() < timeout:
            return "OK Felix"

        message = request.data.decode()

        if len(message) > 200:
            return "Message too long, maximum 200"

        if not message:
            return "No message found"
        socketio.emit('replymessage', {'message': message}, broadcast=True)
        return "Message sent\n"
    return "Failed\n"

@app.route("/messages/", methods = ["POST"])
def messages_post():
    if request.data:
        if "X-Username" in request.headers:
            sender = request.headers["X-Username"]
            sendertype = "name"
        elif "X-Real-IP" in request.headers:
            sender = request.headers["X-Real-IP"]
            sendertype = "ip"
        else:
            sender = "somebody"
            sendertype = "unknown"

        if sender[:6] == "abefor":
            sender = "abeforkelder"

        time = datetime.now()
        last_sent_from_ip = last_sent[sendertype + sender]

        last_sent[sendertype + sender] = time

        if (time-last_sent_from_ip).total_seconds() < timeout:
            return "OK Felix"

        message = request.data.decode()

        if len(message) > 200:
            return "Message too long, maximum 200"

        if not message:
            return "No message found"

        if "spam" in message.lower():
            messages.append(Message(time, "1.3.3.7", "ip", "Nee"))
            return "OK"


        # Save message to serve it in this application
        messages.append(Message(time, sender, sendertype, message))

        # Send message to MessageOS
        msg_with_sendr: str = "<{}> {}".format(sender, message) if sender != "somebody" else message
        msg_b64 = base64.b64encode(msg_with_sendr.encode())

        url = "http://10.0.5.42:8000/" # Set destination URL here
        post_fields = {"X-Messages": msg_b64}
        assembly_request = urllib.request.Request(url, urlencode(post_fields).encode())
        assembly_request.add_header("X-Messages", msg_b64)
        urllib.request.urlopen(assembly_request).read().decode()
        try:
            requests.put("http://10.0.0.10/api/mailbox.json", json={"topic": "morsemessage", "message": msg_with_sendr})
        except:
            pass

    return "OK"


# make sure only messages from the last hour are sent
# this command also only sends messages the user doesn't have yet.
@app.route('/<last_index>/api.json')
def api(last_index):
    curr_time = datetime.now()
    ci = len(messages)-1
    while curr_time - messages[ci].time < datetime.timedelta(hours = 1) and ci > last_index:
        ci -= 1
    return jsonify({"newest_msg_index": len(messages) , "messages": messages[ci:]})


if __name__ == "__main__":
    socketio.run(app)