Files
tcp-chat/server/db.py

53 lines
1.7 KiB
Python

import logging
import sqlite3
from typing import List
import constants
logger = logging.getLogger('database')
conn = sqlite3.connect(constants.DATABASE)
logger.debug(f"Connected to '{constants.DATABASE}'")
logger.debug("Constructing 'message' table.")
conn.execute('''CREATE TABLE IF NOT EXISTS message
(id INTEGER PRIMARY KEY,
nickname TEXT NOT NULL,
connection_hash TEXT NOT NULL,
color TEXT DEFAULT '#000000',
message TEXT DEFAULT '',
timestamp INTEGER NOT NULL)''')
conn.commit()
def add_message(nickname: str, user_hash: str, color: str, message: str, timestamp: int) -> int:
"""
Insert a message into the database. Returns the message ID.
:param nickname: A non-unique identifier for the user.
:param user_hash: A unique hash (usually) denoting the sender's identity.
:param color: The color of the user who sent the message.
:param message: The string content of the message echoed to all clients.
:param timestamp: The epoch time of the sent message.
:return: The unique integer primary key chosen for the message, i.e. it's ID.
"""
cur = conn.cursor()
try:
cur.execute('''INSERT INTO message (nickname, connection_hash, color, message, timestamp)
VALUES (?, ?, ?, ?, ?)''', [nickname, user_hash, color, message, timestamp])
conn.commit()
logger.debug(f'Message {cur.lastrowid} recorded.')
return cur.lastrowid
finally:
cur.close()
def get_messages(columns: List[str] = None):
cur = conn.cursor()
try:
if columns is None:
cur.execute('''SELECT * FROM message''')
return cur.fetchall()
finally:
cur.close()