# -*- coding: utf-8 -*-
"""
Models for lecture recorder
"""
import json

from sqlalchemy import MetaData, CheckConstraint

from backend import db, app, login_manager
import re
from sqlalchemy import or_
from datetime import datetime, timedelta
from backend.models.recorder_model import Recorder


metadata = MetaData()


class Room(db.Model):
    id = db.Column(db.Integer, autoincrement=True, primary_key=True)
    created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow())
    name = db.Column(db.Unicode(127), unique=True, nullable=False)
    alternate_name = db.Column(db.Unicode(127), unique=True, nullable=True, default=None)
    comment = db.Column(db.Unicode(2047), unique=False, nullable=True, default="")
    number = db.Column(db.Unicode(63), unique=True, nullable=True)

    recorder = db.relationship('Recorder', uselist=False, back_populates='room')  # one-to-one relation (uselist=False)

    __table_args__ = (
        CheckConstraint('length(name) > 2',
                        name='name_min_length'),
    )

    def __init__(self, **kwargs):
        super(Room, self).__init__(**kwargs)


    @staticmethod
    def get_by_name(name):
        """
        Find group by name
        :param name:
        :return:
        """
        return Room.query.filter(Room.name == name).first()

    @staticmethod
    def get_all():
        """
        Return all groups
        :return:
        """
        return Room.query.all()

    def __str__(self):
        return self.name

    def to_dict(self):
        return dict(id=self.id, name=self.name)

    def toJSON(self):
        return json.dumps(self.to_dict(), default=lambda o: o.__dict__,
                          sort_keys=True, indent=4)