from random import randint
from time import time

nb_tent = 0
tps_moy = 0
nb_echecs = 0

def Doomsday(jour,mois,annee):
    doomsday = {i:i for i in range(3,13)}
    if bissextile:
        doomsday[1] = 32
        doomsday[2] = 29
    else:
        doomsday[1] = 31
        doomsday[2] = 28
    for m in doomsday.keys():
        if m%2:
            if m in (3,5,7):
                doomsday[m] += 4
            elif m in (9,11):
                doomsday[m] -= 4
    doomcentury = (7 - ((annee // 100) % 4) * 2) % 7
    an = annee-annee//100*100
    if an % 2:
        an += 11
    an //= 2
    if an % 2:
        an += 11
    an %= 7
    doomyear = 7 - an
    ecart = (jour - doomsday[mois])
    signe = ""
    if ecart > 0:
        signe = "+"
    ecart %= 7
    fin = (ecart + doomcentury + doomyear) % 7
    return signe,fin,ecart,doomcentury,doomyear,doomsday


tps_min = 100
tps_max = 0
liste_jours = ["mardi","mercredi","jeudi","vendredi","samedi","dimanche","lundi"]
while True:
    y = randint(1753,2150)
    m = randint(1,12)
    mois_cts = (4,6,9,11)
    bissextile = False
    if y%4 == 0 and y%400 not in (100,200,300):
        bissextile = True
    if m == 2:
        if bissextile:
            d = randint(1,29)
        else:
            d = randint(1,28)
    elif m in mois_cts:
        d = randint(1,30)
    else:
        d = randint(1,31)
    print("date :")
    date = "| {}/{}/{} |".format(d,m,y)
    print("-"*len(date))
    print(date)
    print("-"*len(date))
    start = time()
    int_j = input("Choisir le jour de la semaine (de 1 à 7) : ")
    chiffres = list(map(str,range(1,8)))
    while int_j not in  chiffres:
        int_j = input("saisie non valide, recommencez : ")
    int_j = int(int_j)
    end = time()
    print("temps mis : {:.1f} s\n".format(end-start))
    signe,fin,ecart,doomcentury,doomyear,doomsday = Doomsday(d,m,y)
    nb_tent += 1
    jour = liste_jours[fin].upper()
    if (fin+1)%7+1==int_j:
        print("Bien joué !")
    else:
        print("Echec...")
        nb_echecs += 1
    print("-"*(len(jour)+4))
    print("| {} |".format(jour))
    print("-"*(len(jour)+4))
    print("\nCalculs :")
    print("-"*9)
    print("doomcentury = {}".format(doomcentury))
    print("doomyear = {}".format(doomyear))
    n = (doomyear + doomcentury) % 7
    print("=> Doomsday en {} = {}".format(y,liste_jours[n]))
    print("écart par rapport au doomsday du mois ({}/{})".format(doomsday[m],m))
    if bissextile and m in (1,2):
      print("(année bissextile)")
    print("{}{} jours".format(signe,ecart))
    tps = end-start
    tps_moy += tps
    if tps < tps_min:
        tps_min = tps
    if tps > tps_max:
        tps_max = tps
    rep = input("\nTaper q pour arreter, Entree pour continuer\n")
    if rep == "q":
        pourcent = nb_echecs/nb_tent*100
        tps_moy = tps_moy/nb_tent
        print("\nSTATS :")
        print("-"*7)
        print("nombre de tentatives : {}".format(nb_tent))
        print("pourcentage d'erreurs : {:.0f}%".format(pourcent))
        print("temps moyen : {:.1f} s".format(tps_moy))
        print("temps max : {:.1f} s".format(tps_max))
        print("temps min : {:.1f} s".format(tps_min))
        break

while True:
    date = input("Quelle date ? (format JJ/MM/AAAA) :\n")
    slash = []
    for i,c in enumerate(date):
        if c == "/":
            slash.append(i)
    jour, mois, annee = int(date[:slash[0]]),int(date[slash[0]+1:slash[1]]),int(date[slash[1]+1:])
    if annee > 1600:
        break
    else:
        print("Le calendrier Grégorien ne commence qu'en septembre 1752, choisir une date au-delà.")
liste_jours = ["mardi","mercredi","jeudi","vendredi","samedi","dimanche","lundi"]
Doomsday = {i:i for i in range(3,13)}
if annee%4 == 0 and annee%400 not in (100,200,300):
    print("année bissextile")
    Doomsday[1] = 32
    Doomsday[2] = 29
else:
    Doomsday[1] = 31
    Doomsday[2] = 28
for m in Doomsday.keys():
    if m%2:
        if m in (3,5,7):
            Doomsday[m] += 4
        elif m in (9,11):
            Doomsday[m] -= 4
print(f"liste des doomsday pour {annee} :")
joursdoom = []
for (k,v) in Doomsday.items():
    joursdoom.append((k,v))
joursdoom.sort()
for e in joursdoom:
    m,j = e
    print(f"{j}/{m}")    
    
# Détermination du Doomsday
doomcentury = (7 - ((annee//100)%4) * 2) % 7
print(f"{doomcentury = }")
ans = annee-annee//100*100
#doomyear = ans//12+ans%12+ans%12//4
if ans%2:
    ans += 11
ans //= 2
if ans%2:
    ans += 11
ans %= 7
doomyear = 7-ans
print(f"{doomyear = }")
n = (doomyear+doomcentury)%7
print(f"Doomsday en {annee} = {liste_jours[n]}")
ecart = (jour-Doomsday[mois])
print(f"écart par rapport au doomsday du mois ({Doomsday[mois]}/{mois})")
signe = ""
if ecart > 0:
    signe = "+"
print(f"{signe}{ecart} jours")
ecart %= 7
fin = (ecart+doomcentury+doomyear)%7
print("=>",liste_jours[fin].upper())