from egd import connection


cursor=connection.cursor()


def yearStart(year):
	return "{0}-01-01".format(year)


def playerYear(name,year):
	query="""
		select name, datum, win_count, game_count, rating_after, rating_after-rating_before
			from players natural join players_performance as pp join tournaments as ts on pp.tournament_code=ts.code
			where name=? and datum>=date(?) and datum<date(?)
			order by datum asc
	"""
	date1=yearStart(year)
	date2=yearStart(year+1)

	res=cursor.execute(query,(name,date1,date2))
	print("jméno\tdatum\tpočet výher\tpočet partií\trating po turnaji\tzměna")
	for rec in res:
		print("\t".join([str(x) for x in rec]))


def yearByCountry(year):
	date1=yearStart(year)
	date2=yearStart(year+1)
	query="""
		select country_code,count(pin) from (
			select pin,count(*),pp.country_code from
				players_performance as pp join tournaments as ts on pp.tournament_code=ts.code
				where datum>=date(?) and datum<date(?)
				group by pin
			)
			group by country_code
			order by country_code asc;
		"""
	res=cursor.execute(query,(date1,date2))
	print("kód země\tpočet aktivních hráčů")
	for rec in res:
		print("\t".join([str(x) for x in rec]))


def timeRank(year,country):
	date1=yearStart(year)
	date2=yearStart(year+1)
	query="""
		select ppt.pin,date(?)-min_datum-1,min_datum,ppt.rating_after as rating
			from
				(select pin,min(datum) as min_datum,max(datum) as max_datum from players_performance_tournaments where datum<date(?) group by pin having max_datum>=date(?)) as subq
				join players_performance_tournaments as ppt on subq.pin=ppt.pin and subq.max_datum=ppt.datum
			where ppt.p_country_code=?"""

	res=cursor.execute(query,(date2,date2,date1,country))
	print("pin\tcelé roky hraní\tprvní turnaj\trating")
	for rec in res:
		print("\t".join([str(x) for x in rec]))


def populationStrength():
	pass


def populationAge():
	pass


# playerYear("Kotowski Jaroslav",2017)
# yearByCountry(2017)
timeRank(2017,"CZ")