Files
flask-formula10/formula10/database/import_export.py

112 lines
3.9 KiB
Python

import csv
import os.path
from typing import List, Any
from formula10 import db
from formula10.database.model.db_driver import DbDriver
from formula10.database.model.db_race import DbRace
from formula10.database.model.db_race_guess import DbRaceGuess
from formula10.database.model.db_race_result import DbRaceResult
from formula10.database.model.db_season_guess import DbSeasonGuess
from formula10.database.model.db_season_guess_result import DbSeasonGuessResult
from formula10.database.model.db_team import DbTeam
from formula10.database.model.db_user import DbUser
def load_csv(filename: str) -> List[List[str]]:
if not os.path.exists(filename):
print(f"Could not load data from file {filename}, as it doesn't exist!")
return []
with open(filename, "r", newline="") as file:
reader = csv.reader(file, delimiter=",")
next(reader, None) # skip header
return list(reader)
def write_csv(filename: str, objects: List[Any]):
if len(objects) == 0:
print(f"Could not write objects to file {filename}, as no objects were given!")
return
with open(filename, "w", newline="") as file:
writer = csv.writer(file, delimiter=",")
writer.writerow(objects[0].__csv_header__)
for obj in objects:
writer.writerow(obj.to_csv())
# Reload static database data, this has to be called from the app context
def reload_static_data():
print("Initializing database with static values...")
# Create it/update tables (if it/they doesn't exist!)
db.create_all()
# Clear static data
db.session.query(DbTeam).delete()
db.session.query(DbDriver).delete()
db.session.query(DbRace).delete()
# Reload static data
for row in load_csv("data/static_import/teams.csv"):
db.session.add(DbTeam.from_csv(row))
for row in load_csv("data/static_import/drivers.csv"):
db.session.add(DbDriver.from_csv(row))
for row in load_csv("data/static_import/races.csv"):
db.session.add(DbRace.from_csv(row))
db.session.commit()
def reload_dynamic_data():
print("Initializing database with dynamic values...")
# Create it/update tables (if it/they doesn't exist!)
db.create_all()
# Clear dynamic data
db.session.query(DbUser).delete()
db.session.query(DbRaceResult).delete()
db.session.query(DbRaceGuess).delete()
db.session.query(DbSeasonGuess).delete()
# Reload dynamic data
for row in load_csv("data/dynamic_export/users.csv"):
db.session.add(DbUser.from_csv(row))
for row in load_csv("data/dynamic_export/raceresults.csv"):
db.session.add(DbRaceResult.from_csv(row))
for row in load_csv("data/dynamic_export/raceguesses.csv"):
db.session.add(DbRaceGuess.from_csv(row))
for row in load_csv("data/dynamic_export/seasonguesses.csv"):
db.session.add(DbSeasonGuess.from_csv(row))
db.session.commit()
def reload_season_guess_result_data():
print("Loading season guess results...")
# Create it/update tables (if it/they doesn't exist!)
db.create_all()
# Clear result data
db.session.query(DbSeasonGuessResult).delete()
# Reload result data
for row in load_csv("data/static_import/season_guess_results.csv"):
db.session.add(DbSeasonGuessResult.from_csv(row))
db.session.commit()
def export_dynamic_data():
print("Exporting Userdata...")
users: List[DbUser] = db.session.query(DbUser).all()
raceresults: List[DbRaceResult] = db.session.query(DbRaceResult).all()
raceguesses: List[DbRaceGuess] = db.session.query(DbRaceGuess).all()
seasonguesses: List[DbSeasonGuess] = db.session.query(DbSeasonGuess).all()
write_csv("data/dynamic_export/users.csv", users)
write_csv("data/dynamic_export/raceresults.csv", raceresults)
write_csv("data/dynamic_export/raceguesses.csv", raceguesses)
write_csv("data/dynamic_export/seasonguesses.csv", seasonguesses)