from flask import flash, redirect, render_template, request, url_for
from werkzeug.security import generate_password_hash

from app import webapp
from app.config import Defaults
from app.homeassistant import HomeAssistant
from app.models.settings import Setting
from app.views.auth import login_required

@webapp.route('/settings')
@login_required
def settings():
   
   hass_url = Setting.get_value(Setting.Keys.HASS_URL)
   hass_token = Setting.get_value(Setting.Keys.HASS_TOKEN)
   feedback = Setting.get_value(Setting.Keys.FEEDBACK, Defaults.feedback_level)
   
   auth_required = True if Setting.get_value(Setting.Keys.HASSCALL_LOGIN_REQUIRED) == 'true' else False
   username = Setting.get_value(Setting.Keys.HASSCALL_USERNAME)
   
   return render_template('settings.html', token=hass_token, url=hass_url, feedback=feedback, auth_enabled=auth_required, username=username)

@webapp.route('/save-settings', methods=['POST'])
@login_required
def save_settings():
   # Authorization
   auth_enabled = 'false'
   if 'auth-enabled' in request.form and request.form['auth-enabled'] == 'true':
      auth_enabled = 'true'
      
   Setting.set_value(Setting.Keys.HASSCALL_LOGIN_REQUIRED, auth_enabled)
      
   username = request.form["auth-user"]
   password = request.form["auth-password"]

   if not username or not password:
      flash("Username and password required!", "error")
   else:
      Setting.set_value(Setting.Keys.HASSCALL_USERNAME, username)
      Setting.set_value(Setting.Keys.HASSCALL_PASSWORD, generate_password_hash(password))
   
   # Feedback
   Setting.set_value(Setting.Keys.FEEDBACK, request.form["feedback"])
   
   # Attempt a connection to Home Assistant
   url = request.form["url"]
   token = request.form["token"]
   if not url.endswith("/api"):
      url = url + "/api"
      
   try:
      validConnection = HomeAssistant.testConnection(url, token)
      if not validConnection:
         flash("Unable to connect to Home Assistant", "error")
      else:
         HomeAssistant.initialize(url=url, token=token)
         Setting.set_value(Setting.Keys.HASS_URL, url)
         Setting.set_value(Setting.Keys.HASS_TOKEN, token)
   except:
     flash("There was an error!", "error")

   flash("Settings saved successfully!", "success")
   
   return redirect(url_for('settings'))