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#!/usr/bin/env python
import argparse
import datetime
import dateutil.parser
import dateutil.relativedelta
from f1elo.db import Session
from f1elo.elo import Elo
from f1elo.model import *
session = Session()
elo = Elo(session)
parser = argparse.ArgumentParser(description='Ranks Formula One drivers using Elo rating')
parser.add_argument('command', metavar='COMMAND', nargs='?',
help='Action to execute against the database: print, reset or rate, print - prints the rankings for all drivers ranked in 12 months, reset - resets the rankings, rate - calculates the rankings',
default='print')
parser.add_argument('--date', help='Date for which the action should be executed. Print ratings for DATE, reset ratings all the way down to DATE or rank the races all the way up to DATE.')
arguments = parser.parse_args()
command = arguments.command.lower()
date = arguments.date
if date:
date = dateutil.parser.parse(date).date()
one_day = datetime.timedelta(1)
if command == 'reset':
query = session.query(Race)
if date is not None:
query = query.filter(Race.date > date)
for race in query.all():
race.ranked = False
query = session.query(Ranking)
if date is not None:
query = query.filter(Ranking.rank_date > date)
query.delete()
if date is not None:
date += one_day
elif command == 'rate':
race_query = session.query(Race).filter(Race.ranked == False)
if date is not None:
race_query = race_query.filter(Race.date <= date)
races = race_query.order_by(Race.date).all()
for race in races:
print race
print
ranks = elo.rank_race(race)
driver_ranks = {}
for entry, rank in ranks.iteritems():
correction = rank / len(entry.drivers)
for driver in entry.drivers:
if not driver_ranks.has_key(driver):
driver_ranks[driver] = 0;
driver_ranks[driver] += correction
for driver, rank in driver_ranks.iteritems():
ranking = Ranking()
ranking.rank_date = race.date
ranking.ranking = elo.get_ranking(driver, race.date) + rank
session.add(ranking)
driver.rankings.append(ranking)
for entry in race.entries:
print entry, elo.get_entry_ranking(entry, race.date), elo.get_entry_ranking(entry)
print
race.ranked = True
date = race.date + one_day
if date is None:
date = datetime.date.today()
date += one_day
one_year = dateutil.relativedelta.relativedelta(years=1)
rankings = session.query(Ranking).filter(Ranking.rank_date > (date - one_year)).filter(Ranking.rank_date <= date).all()
if len(rankings):
print 'Rankings for %s' % date
drivers = {}
for ranking in rankings:
if not drivers.has_key(ranking.driver):
drivers[ranking.driver] = ranking.driver.get_ranking(date)
for rank in sorted(drivers.values(), key=lambda rank: rank.ranking, reverse=True):
print rank
else:
print 'No rankings for %s' % date
session.commit()
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