'''
Created on 19 mar 2020

@author: Emanuele Trabattoni
@copyright:  Briq srl
@contact:  Scritto per Briq srl come collaboratore esterno, contiene dei frammenti di codice di proprieta' di Briq srl
'''

from flask import Flask, escape, request
import threading
import queue
import sys
import logging
import os
from waitress import serve
from driver import tsc_manager, notifier

#inizializza ascoltatore di Flask
app = Flask(__name__)

#questo manda le rest di risposta a django
@app.route('/tscprinter/printer/<ip>/<command>', methods=['POST'])
def printer_in(ip, command):
    parameters = request.get_json()
    print(f"Comando Stampante: {ip} {command} {str(parameters)}")
    # questo prossimo mi sa che non funzia perché la funzione
    # inizia a esistere quando si esegue tsc_manager.main ma poi non
    # viene esportata nello scope del modulo tsc_manager
    queue_id = tsc_manager.get_queue_id(ip)
    print(queue_id)
    if queue_id is not None and queue_id in queues_in:
        queues_in[queue_id].put({'name': command, 'parameters': parameters})
        return "Comando Stampante Inviato", 200
    else:
        return "Stampante non trovata", 404
       
@app.route('/tscprinter/gest/<command>', methods=['POST'])
def gest_in(command):
    parameters = request.get_json()
    print(f"Comando Gestore: {str(parameters)}")
    # istes di sopra
    queue_command = tsc_manager.get_queue_command()
    if queue_command is not None:
        queue_command.put({'name': command, 'parameters': parameters})
        return "Comando Gestore Inviato", 200
    else:
        return "Gestore non Disponibile", 404
       
       
def build_logger():
    logger = logging.getLogger(__name__)
    logger.setLevel(logging.INFO)
    logger.propagate = False
    formatter = logging.Formatter(("%(asctime)s|%(levelname)-7s|%(funcName)-10s|%(lineno)-3d: %(message)-50s"),
                                  ("%m-%d %H:%M:%S"))
    # File Logging
    fh = logging.FileHandler(("./log/tsc.log"))
    fh.setLevel(logging.DEBUG)
    fh.setFormatter(formatter)
    logger.addHandler(fh)
    # Console Logging
    cl = logging.StreamHandler(sys.stdout)
    cl.setLevel(logging.DEBUG)
    cl.setFormatter(formatter)
    logger.addHandler(cl)
    return logger

if __name__ == '__main__':
    logger = build_logger()
    queues_in = {}
    queue_command = queue.Queue()
    queue_out = queue.Queue()
    t_notify_django = threading.Thread(target=notifier.notifier,
                                       args=[queue_out, logger],
                                       daemon=True)
    t_notify_django.start()
    t_manager = threading.Thread(target=tsc_manager.main,
                               args=[queues_in, queue_out, queue_command, logger],
                               daemon=True)
    t_manager.start()
    listen = "{}:{}".format(os.getenv("TSC_PRINTER_DRIVER_HOST"),
                            os.getenv("TSC_PRINTER_DRIVER_PORT"))
    # dico (aspettando) a django che siamo pronti a ricevere gli indirizzi
    # delle stampanti 
    notifier.send_hello(queue_out)
    serve(app, listen=listen)