import re
import sys
import json
import logging
from logging import config
import yaml
from flask import Flask, render_template, redirect, request, url_for
from flask_minify import minify
from thsf.backend import Backend
from thsf.schedule import Schedule
from thsf.navbar import Navbar


# ------------------------------------------------------------------------------
# -- Configuration
# ------------------------------------------------------------------------------
class AppConfig:
    """ Flask application config """
    CONFIG_FILENAME = "config.yml"


# ------------------------------------------------------------------------------
# -- Application
# ------------------------------------------------------------------------------
logger = logging.getLogger('wsgi')
app = Flask(__name__)

# ------------------------------------------------------------------------------
# -- Local configuration
# ------------------------------------------------------------------------------
app.config.from_object(__name__ + '.AppConfig')
try:
  with open(app.config["CONFIG_FILENAME"], mode="r", encoding="utf-8") as local_config_file:
    app.local_config = yaml.load(local_config_file, Loader=yaml.SafeLoader)
    app.config["SECRET_KEY"] = app.local_config["app"]["secret_key"]
    app.config["LANGUAGES"] = app.local_config["app"]["languages"]
    config.dictConfig(app.local_config["log"])
    backend = Backend(url=app.local_config["pretalx"]["url"],
                      apiprefix=app.local_config["pretalx"]["apiprefix"],
                      apikey=app.local_config["pretalx"]["apikey"])
    schedule = Schedule()
    navbar = Navbar(config=app.local_config["navbar"])
except Exception as err:
  logger.critical("[{}] {}".format(err.__class__, str(err)))
  sys.exit(1)

if app.local_config["log"]["root"]["level"] != "DEBUG":
  minify(app=app, html=True, js=True, cssless=True)

# ------------------------------------------------------------------------------
# -- Tools
# ------------------------------------------------------------------------------
@app.errorhandler(404)
def page_not_found(err):
  return redirect(url_for('index'))

def get_slots():
  return backend.get(endpoint=f"events/{app.local_config['pretalx']['event']}/schedules/{app.local_config['pretalx']['schedule']}/").json()

def get_speaker_biography(name):
  try:
    speaker_info = backend.get(endpoint=f"events/{app.local_config['pretalx']['event']}/speakers/", params={"q": name}).json()
    logging.info(speaker_info)
    return speaker_info["results"][0]["biography"].strip()
  except Exception as err:
    logging.error(f"UnknownSpeakerError: {name}")
    return None

# ------------------------------------------------------------------------------
# -- Custom filters
# ------------------------------------------------------------------------------
@app.template_filter('date2dmyhm')
def date2dmyhm(date):
  splitted_date = date.split("-")
  splitted_time = splitted_date[2].split("T")[1].split(":")
  year, month, day = (splitted_date[0],
                      splitted_date[1],
                      splitted_date[2].split("T")[0])
  hour, minutes = (splitted_time[0], splitted_time[1].split("+")[0])
  return f"{day}/{month} {hour}:{minutes}"

@app.template_filter('date2dayclass')
def date2dayclass(date):
  classes = {"26/05": "bg1",
             "27/05": "bg2",
             "28/05": "bg3",}
  splitted_date = date.split("-")
  month, day = (splitted_date[1],
                splitted_date[2].split("T")[0])
  return classes[f"{day}/{month}"]

@app.template_filter('toicon')
def date2dmyhm(slot_type):
  slot_types = {"Projection": "fa-solid fa-film",
                "Presentation Courte": "fa-solid fa-person-chalkboard",
                "DJ Set": "fa-solid fa-guitar",
                "Concert": "fa-solid fa-guitar",
                "Présentation": "fa-solid fa-person-chalkboard",
                "Table Ronde": "fa-solid fa-users-line",
                "Atelier": "fa-solid fa-screwdriver-wrench",
                "Exposition": "fa-solid fa-palette"}
  return slot_types[slot_type]

# ------------------------------------------------------------------------------
# -- Routes
# ------------------------------------------------------------------------------
@app.route('/favicon.ico', methods=['GET'])
def favicon():
  return redirect(url_for('static', filename='images/favicon.png'))


@app.route('/', methods=['GET'])
def index():
  return render_template("index.html",
                         navbar=navbar.get_from_page(page="/"))

@app.route('/planning', methods=['GET'])
def planning():
  slots = get_slots()
  for slot in slots.get("slots"):
    for speaker in slot.get("speakers"):
      speaker["biography"] = get_speaker_biography(speaker.get("name"))
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/planning"))

@app.route('/place', methods=['GET'])
def place():
  return render_template("index.html",
                         navbar=navbar.get_from_page(page="/place"))

@app.route('/food', methods=['GET'])
def food():
  return render_template("index.html",
                         navbar=navbar.get_from_page(page="/food"))

@app.route('/goodies', methods=['GET'])
def goodies():
  return render_template("goodies.html",
                         navbar=navbar.get_from_page(page="/goodies"))

@app.route('/concerts', methods=['GET'])
def concerts():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/concerts"),
                         filter=["concert", "dj set"])

@app.route('/workshops', methods=['GET'])
def workshops():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/workshops"),
                         filter=["workshop"])

@app.route('/screenings', methods=['GET'])
def screenings():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/screenings"),
                         filter=["screening"])

@app.route('/discussions', methods=['GET'])
def discussions():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/discussions"),
                         filter=["panel discussion"])

@app.route('/exhibitions', methods=['GET'])
def exhibitions():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/exhibitions"),
                         filter=["exhibition"])

@app.route('/talks', methods=['GET'])
def talks():
  slots = get_slots()
  return render_template("planning.html",
                         slots=sorted(slots.get("slots"),
                         key=lambda slot: slot.get("slot").get("start")),
                         navbar=navbar.get_from_page(page="/talks"),
                         filter=["talk", "light talk"])


# ------------------------------------------------------------------------------
# -- Main
# ------------------------------------------------------------------------------
if __name__ == '__main__':
  app.run(host='127.0.0.1', port=5000, debug=True)