import sqlite3


class DucksProvider(object):
    _CREATE_TABLE = 'CREATE TABLE IF NOT EXISTS ducks (id INTEGER PRIMARY KEY, \
                    user TEXT, friends INTEGER, dead INTEGER)'
    _GET_DUCKS = 'SELECT id, friends, dead FROM ducks WHERE user = ?'
    _SAVE_OR_OVERWRITE = 'REPLACE INTO ducks (id, user, friends, dead) VALUES (?, ?, ?,?)'
    _DELETE_DUCKS = 'DELETE FROM ducks WHERE user = ?'

    def __init__(self):
        self._database_connection = sqlite3.connect('faust_bot.db')
        cursor = self._database_connection.cursor()
        cursor.execute(DucksProvider._CREATE_TABLE)
        self._database_connection.commit()

    def get_ducks(self, user: str):
        cursor = self._database_connection.cursor()
        cursor.execute(DucksProvider._GET_DUCKS, (user.lower(),))
        return cursor.fetchone()

    def save_or_replace(self, user: str, friends: int, dead: int):
        existing = self.get_ducks(user)
        _id = existing[0] if existing is not None else None
        data = (_id, user.lower(), friends, dead)
        cursor = self._database_connection.cursor()
        cursor.execute(DucksProvider._SAVE_OR_OVERWRITE, data)
        self._database_connection.commit()

    def delete_score(self, user: str):
        cursor = self._database_connection.cursor()
        cursor.execute(DucksProvider._DELETE_DUCKS, (user.lower(),))
        self._database_connection.commit()

    def __exit__(self):
        self._database_connection.close()