import os
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from .table_def import *


class RainbowDB():

    engine = None

    def __init__(self):
        """
        Init DB
        """
        if os.path.isfile('rainbow.db'):
            os.system('rm -rf rainbow.db')
        init_db()
        self.engine = create_engine('sqlite:///rainbow.db', echo=False)


    def tweet_store(self, tweet_id):
        """
        Store tweet id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        t = Tweet(tweet_id)
        session.add(t)
        session.commit()


    def rainbow_to_tweet_query(self, rid):
        """
        Query base of rainbow id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Tweet).filter_by(rainbow_id=rid).all()
        return res


    def tweet_to_rainbow_query(self, tid):
        """
        Query base of tweet id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Tweet).filter_by(tweet_id=tid).all()
        return res


    def message_store(self, message_id):
        """
        Store message id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        m = Message(message_id)
        session.add(m)
        session.commit()


    def rainbow_to_message_query(self, rid):
        """
        Query base of rainbow id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Message).filter_by(rainbow_id=rid).all()
        return res


    def message_to_rainbow_query(self, mid):
        """
        Query base of message id
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Message).filter_by(message_id=mid).all()
        return res


    def theme_store(self, theme_name):
        """
        Store theme
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        th = Theme(theme_name)
        session.add(th)
        session.commit()


    def theme_update(self, theme_name):
        """
        Update theme
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Theme).all()
        for r in res:
            r.theme_name = theme_name
        session.commit()


    def theme_query(self):
        """
        Query theme
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Theme).all()
        return res


    def semaphore_store(self, flag):
        """
        Store semaphore flag
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        th = Semaphore(flag)
        session.add(th)
        session.commit()


    def semaphore_update(self, flag):
        """
        Update semaphore flag
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Semaphore).all()
        for r in res:
            r.flag = flag
        session.commit()


    def semaphore_query(self):
        """
        Query semaphore
        """
        Session = sessionmaker(bind=self.engine)
        session = Session()
        res = session.query(Semaphore).all()
        return res[0].flag