from enum import Enum
from app import db

class Setting(db.Model):

    class Keys(Enum):
        HASSCALL_USERNAME = "username"
        HASSCALL_PASSWORD = "password"
        HASSCALL_LOGIN_REQUIRED = "login_required"
        
        HASS_URL = "hass_url"
        HASS_TOKEN = "hass_token"
        FEEDBACK = "feedback_level"

    # Table structure
    __tablename__ = "settings"
    
    key         = db.Column(db.String(64), primary_key=True  )
    value       = db.Column(db.String(256)                   )

    def __init__(self, key:Keys, value:str) -> None:
        self.key         = key.value
        self.value       = value

    def __repr__(self) -> str:
        return str(self.key) + ' = ' + str(self.value)

    @classmethod
    def get_entry_or_default(cls, key:Keys, default:str) -> str:
        result = cls.query.filter_by(key=key.value).first()
        if result is not None:
            return result
        
        result = Setting(key, default)
        db.session.add (result)
        db.session.commit( )
        return result

    @classmethod
    def get_value(cls, key:Keys, default:str = "") -> str:
        return cls.get_entry_or_default(key, default).value

    @classmethod
    def set_value(cls, key:Keys, value:str) -> None:
        setting = cls.get_entry_or_default(key, value)
        setting.value = value
        db.session.commit( )