from ogn import db


class RelationStats(db.Model):
    __tablename__ = "relation_stats"

    id = db.Column(db.Integer, primary_key=True)

    date = db.Column(db.Date)

    # Statistic data
    quality = db.Column(db.Float(precision=2))
    beacon_count = db.Column(db.Integer)

    # Relations
    device_id = db.Column(db.Integer, db.ForeignKey('devices.id', ondelete='SET NULL'), index=True)
    device = db.relationship('Device', foreign_keys=[device_id], backref='relation_stats')
    receiver_id = db.Column(db.Integer, db.ForeignKey('receivers.id', ondelete='SET NULL'), index=True)
    receiver = db.relationship('Receiver', foreign_keys=[receiver_id], backref='relation_stats')

    def __repr__(self):
        return "<RelationStats: %s,%s,%s>" % (
            self.date,
            self.quality,
            self.beacon_count)


db.Index('ix_relation_stats_date_device_id', RelationStats.date, RelationStats.device_id, RelationStats.receiver_id)
db.Index('ix_relation_stats_date_receiver_id', RelationStats.date, RelationStats.receiver_id, RelationStats.device_id)