Tlapbot/tlapbot/db.py

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import sqlite3
import click
from flask import current_app, g
from flask.cli import with_appcontext
def get_db():
if 'db' not in g:
g.db = sqlite3.connect(
current_app.config['DATABASE'],
detect_types=sqlite3.PARSE_DECLTYPES
)
g.db.row_factory = sqlite3.Row
return g.db
def close_db(e=None):
db = g.pop('db', None)
if db is not None:
db.close()
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def insert_counters(db):
for redeem, redeem_info in current_app.config['REDEEMS'].items():
if redeem_info["type"] == "counter":
try:
db.execute(
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"INSERT INTO counters(name, count) VALUES(?, 0)",
(redeem,)
)
db.commit()
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except Error as e:
print("Failed inserting counters to db:", e.args[0])
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def init_db():
db = get_db()
with current_app.open_resource('schema.sql') as f:
db.executescript(f.read().decode('utf8'))
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insert_counters(db)
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def clear_redeem_queue():
db = get_db()
try:
cursor = db.execute(
"DELETE FROM redeem_queue"
)
cursor.execute(
"""UPDATE counters SET count = 0"""
)
db.commit()
except Error as e:
print("Error occured deleting redeem queue:", e.args[0])
def refresh_counters():
db = get_db()
try:
db.execute("DELETE FROM counters")
db.commit()
except Error as e:
print("Error occured deleting old counters:", e.args[0])
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for redeem, redeem_info in current_app.config['REDEEMS'].items():
if redeem_info["type"] == "counter":
try:
cursor = db.execute(
"INSERT INTO counters(name, count) VALUES(?, 0)",
(redeem,)
)
db.commit()
except Error as e:
print("Failed inserting counters to db:", e.args[0])
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@click.command('init-db')
@with_appcontext
def init_db_command():
"""Clear the existing data and create new tables."""
init_db()
click.echo('Initialized the database.')
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@click.command('clear-queue')
@with_appcontext
def clear_queue_command():
"""Remove all redeems from the redeem queue."""
clear_redeem_queue()
click.echo('Cleared redeem queue.')
@click.command('refresh-counters')
@with_appcontext
def refresh_counters_command():
"""Refresh counters from current config file. (Remove old ones, add new ones.)"""
refresh_counters()
click.echo('Counters refreshed.')
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def init_app(app):
app.teardown_appcontext(close_db)
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app.cli.add_command(init_db_command)