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110 lines
2.4 KiB
Python
110 lines
2.4 KiB
Python
"""
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Database utils module.
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"""
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import logging
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from collections import namedtuple
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import MySQLdb
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from settings.config import MYSQL_CONFIG
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logger = logging.getLogger(__name__)
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class Cursor:
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"""
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Context manage for database handler.
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"""
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def __init__(self, config: dict) -> None:
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"""
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Constructor.
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"""
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self.configuration = config
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def __enter__(self) -> 'cursor':
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"""
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Context manager.
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"""
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self.conn = MySQLdb.connect(**self.configuration)
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self.cursor = self.conn.cursor()
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return self.cursor
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def __exit__(self, exc_type, exc_value, exc_trace) -> None:
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"""
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Exit from context manager.
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"""
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self.conn.commit()
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self.cursor.close()
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self.conn.close()
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def migrate() -> None:
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"""
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Create tables.
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"""
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_sql = '''
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create table if not exists neeble_quotes(
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id int auto_increment primary key,
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user varchar(200) not null,
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quote varchar(500) not null unique,
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index quote_idx (quote)
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);
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'''
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try:
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with Cursor(MYSQL_CONFIG) as cursor:
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cursor.execute(_sql)
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except Exception as ex:
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logger.error(ex.args)
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def set_quote(user: str, quote: str) -> None:
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"""
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Set a quote into database.
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"""
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_sql = f'''
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insert into neeble_quotes(user, quote)
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value("{user}", "{quote}");
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'''
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with Cursor(MYSQL_CONFIG) as cursor:
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cursor.execute(_sql)
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def get_quotes(ids: list) -> tuple:
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"""
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Get the saved quotes.
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ids: List of quote ID's
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"""
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_sql = f'''
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select quote, user, id
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from neeble_quotes
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'''
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_sql = _sql + f' where id not in ({",".join([str(id) for id in ids])});' if ids else _sql + ';'
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response = []
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obj = namedtuple('Quotes', ['quote', 'user', 'id'])
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with Cursor(MYSQL_CONFIG) as cursor:
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cursor.execute(_sql)
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response = cursor.fetchall()
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return tuple(obj(*r) for r in response)
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def get_by_id(id: int) -> object:
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"""
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Get one quote by ID.
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"""
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obj = namedtuple('Quotes', ['quote', 'user', 'id'])
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_sql = f'''
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select quote, user, id
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from neeble_quotes
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where id={id};
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'''
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with Cursor(MYSQL_CONFIG) as cursor:
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cursor.execute(_sql)
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quote = cursor.fetchone()
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if not quote:
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return None
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return obj(*quote)
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