import json
import sys, os
from flask import Flask, render_template, redirect, json, g


from flask_socketio import SocketIO, emit
from flask_sqlalchemy import SQLAlchemy
import logging

from sqlalchemy.ext.declarative import DeclarativeMeta

from modules.core.core import CraftBeerPi, ActorBase, SensorBase
from modules.core.db import DBModel

app = Flask(__name__)

logging.basicConfig(filename='./logs/app.log',level=logging.INFO)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///../craftbeerpi.db'

#app.config['SQLALCHEMY_ECHO'] = False
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SECRET_KEY'] = 'craftbeerpi'
app.config['UPLOAD_FOLDER'] = './upload'
db = SQLAlchemy(app)

@app.teardown_appcontext
def close_connection(exception):
    db = getattr(g, '_database', None)
    if db is not None:
        db.close()


class ComplexEncoder(json.JSONEncoder):
    def default(self, obj):
        try:
            if isinstance(obj, DBModel):
                return obj.__dict__
            elif isinstance(obj, ActorBase):
                return obj.state()
            elif isinstance(obj, SensorBase):
                return obj.get_value()
            elif hasattr(obj, "callback"):
                return obj()
            else:
                return None
        except TypeError as e:
            pass
        return None

app.json_encoder = ComplexEncoder
socketio = SocketIO(app, json=json)
cbpi   = CraftBeerPi(app, socketio)

app.logger.info("##########################################")
app.logger.info("### NEW STARTUP Version 3.0")
app.logger.info("##########################################")