149 lines
5.1 KiB
Python
149 lines
5.1 KiB
Python
import json
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import psycopg2
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import psycopg2.extensions
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import psycopg2.errors
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import requests
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import unidecode
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import constants
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from config import read_db_config, read_config
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from log_setup import logger
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class DBConnectionManager:
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def __init__(self):
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self._conn = None
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def connect(self):
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config = read_db_config()
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logger.debug("Establishing database connection with dbname={}, user={}, password={}".format(
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config.db_name, config.db_user, config.db_pass
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))
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self._conn = psycopg2.connect("dbname='{}' user='{}' password='{}' host='localhost'".format(
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config.db_name, config.db_user, config.db_pass
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))
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logger.debug("Established database connection.")
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def get_connection(self) -> psycopg2.extensions.connection:
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"""
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Get the database connection.
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If not already connected, this reads the database config file and connects to the DB.
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Otherwise, the already active connection is returned.
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"""
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if self._conn is None:
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self.connect()
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return self._conn
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def get_new_cursor(self) -> psycopg2.extensions.cursor:
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if self._conn is None:
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self.connect()
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return self._conn.cursor()
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# Global instance that will hold our DB connection
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conn_manager = DBConnectionManager()
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def get_existing_tables():
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conn = conn_manager.get_connection()
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cur = conn.cursor()
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table_names = ", ".join("'{}'".format(tablename) for tablename in constants.DB_TABLE_NAMES)
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cur.execute(
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"SELECT tablename FROM pg_tables WHERE"
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" schemaname = 'public' AND"
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" tablename IN ({})".format(
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table_names
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)
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)
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return [table for (table,) in cur.fetchall()]
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def init_database():
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"""
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Warning: This drops all existing tables from the database
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"""
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conn = conn_manager.get_connection()
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cur = conn.cursor()
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with open(constants.DATABASE_SCHEMA_PATH, "r") as f:
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cur.execute(f.read())
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conn.commit()
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logger.verbose("Initialized DB tables.")
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def fetch_and_initialize_variants():
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response = requests.get(constants.VARIANTS_JSON_URL)
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if not response.status_code == 200:
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logger.error("Could not download variants.json file from github (tried url {})".format(constants.VARIANTS_JSON_URL))
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return
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variants = json.loads(response.text)
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config = read_config()
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for variant in variants:
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variant_id = variant['id']
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name = variant['name']
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clue_starved = variant.get('clueStarved', False)
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num_suits = len(variant['suits'])
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if config.min_suit_count <= num_suits <= config.max_suit_count:
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if any(var_name in name.lower() for var_name in config.excluded_variants):
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continue
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cur = conn_manager.get_new_cursor()
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cur.execute(
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"INSERT INTO variants (id, name, num_suits, clue_starved) VALUES (%s, %s, %s, %s)",
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(variant_id, name, num_suits, clue_starved)
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)
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conn_manager.get_connection().commit()
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def add_player_name(player_name: str):
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conn = conn_manager.get_connection()
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cur = conn.cursor()
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try:
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cur.execute("INSERT INTO users (player_name) VALUES (%s)", (player_name,))
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conn.commit()
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except psycopg2.errors.UniqueViolation:
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logger.warn("Player name {} already exists in the database, aborting insertion.".format(player_name))
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conn.rollback()
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def add_user_name_to_player(hanabi_username: str, player_name: str):
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normalized_username = unidecode.unidecode(hanabi_username).lower()
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cur = conn_manager.get_new_cursor()
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cur.execute("SELECT id FROM users WHERE player_name = (%s)", (player_name,))
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user_id = cur.fetchone()
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if user_id is None:
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logger.error("Display name {} not found in database, cannot add username to it.".format(player_name))
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return
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else:
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cur.execute("SELECT username, player_name from user_accounts "
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"INNER JOIN users"
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" ON user_accounts.user_id = users.id "
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"WHERE "
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" normalized_username = (%s)",
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(normalized_username,)
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)
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res = cur.fetchone()
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if res is not None:
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existing_username, existing_player_name = res
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if existing_player_name == player_name:
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logger.warn("Hanabi username {} is already registered to player {}, attempted to re-register it.".format(
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existing_username, existing_player_name
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))
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else:
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logger.error("Hanabi username {} is already associated to player {}, cannot register it to player {}.".format(
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res[0], res[1], player_name
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))
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return
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cur.execute(
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"INSERT INTO user_accounts (username, normalized_username, user_id) VALUES (%s, %s, %s)",
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(hanabi_username, normalized_username, user_id)
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)
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conn_manager.get_connection().commit()
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def add_player(player_name: str, user_name: str):
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add_player_name(player_name)
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add_user_name_to_player(user_name, player_name)
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