# INFOS

# Pièces :

# [1-6] : Blancs
# [11-6] : Noirs

# X1 : Pion
# X2 : Tour
# X3 : Cavalier
# x4 : Fou
# X5 : Dame
# X6 : Roi


# j_ jeu : le logique du jeu lui même
# g_ GUI : l'interface graphique
# f_ Frontend : ce qui associe les deux
# _e : est
# _c : crée
# _d : déplace


# IMPORTS
from tkinter import *
from random import randint

# FONCTIONS


# Jeu
CASES_COTE = 8

j_grille = None
auxBlancs = None

def j_eNoir(xD, yD): # TODO Peut être considérablement amélioré
    i = 1
    for x in range(0, CASES_COTE):
        i += 1
        for y in range(0, CASES_COTE):
            i += 1
            if x == xD and y == yD:
                return i%2
def j_cGrille():
    global j_grille
    j_grille = []
    for x in range(CASES_COTE):
        colonne = []
        for y in range(CASES_COTE):
            if j_eNoir(x, y):
                colonne.append(0)
            else:
                colonne.append(-1)
        j_grille.append(colonne)

def j_remplirGrille():
    global j_grille
    j_grille[2][2] = 5

def j_nvPartie():
    j_cGrille()
    j_remplirGrille()
    global auxBlancs
    auxBlancs = True

def j_cPion(x, y, piece):
    """
    """
    j_grille[x][y] = piece
    return True

def j_dPion(x1, y1, x2, y2):
    # TODO Vérification du mouvement possible
    assert(j_grille[x1][y1] > 0), "ERR1"
    assert(j_grille[x2][y2] != 0), "ERR2"
    j_grille[x2][y2] = j_grille[x1][y1]
    return True

# def poserPion(x, y):
#     global auxBlancs
#     if j_grille[x][y] == 0:
#         j_grille[x][y] = 1
#         pion(x, y, auxBlancs)
#         auxBlancs = not auxBlancs
#     elif j_grille[x][y] == -1:
#         statut('On joue sur les cases noires !')
#     else:
#         statut('Il y a déjà quelque chose ici.')


# GUI
DECX = 0
DECY = 0
COTE_CASE = 50
MARGE_PIONS = 5

g_grilleDamier = None
g_grillePions = None
g_photos = []
fen = None
can = None
chaine = None

def g_fen():
    global fen, can, chaine
    fen = Tk()
    fen.title("Jeu d'Échecs")
    can = Canvas(fen, width=COTE_CASE*CASES_COTE, height=COTE_CASE*CASES_COTE, \
        bg="ivory")
    can.grid(row=0, column=1, columnspan=3)
    can.bind('<Button-1>', f_clic)
    chaine = Label(fen, text="Aux blancs")
    chaine.grid(row=2, column=2, padx=3, pady=3)
    Button(fen, text="Nv. Partie", command=f_nvPartie).grid(row=2, column=1, \
        padx=3, pady=3)
    Button(fen, text="Quitter", command=fen.destroy).grid(row=2, column=3, \
        padx=3, pady=3)

def g_statut(texte, delai=0):
    chaine.config(text=texte)
    print(texte)
    # TODO Timeout effacer si parametre

def g_cCase(x, y):
    if j_eNoir(x, y):
        couleur = 'black'
    else:
        couleur = 'white'
    return can.create_rectangle(x*COTE_CASE, y*COTE_CASE, \
        (x+1)*COTE_CASE, (y+1)*COTE_CASE, fill=couleur)

def g_cDamier():
    global g_grilleDamier
    g_grilleDamier = []
    for x in range(0, CASES_COTE):
        colonne = []
        for y in range(0, CASES_COTE):
            colonne.append(g_cCase(x + DECX, y + DECY))
        g_grilleDamier.append(colonne)

def g_cPion(x, y, piece):
    global g_grillePions
    global g_photos
    if piece > 0:
        nom = 'sprites/'
        if piece%10 == 5:
            nom += 'reine'
        else:
            nom += 'pion'
        if piece < 10:
            nom += 'B'
        else:
            nom += 'N'
        nom += '.gif'
        g_photos.append(PhotoImage(file=nom))
        sample = int(504/(COTE_CASE-MARGE_PIONS))
        g_photos[-1] = g_photos[-1].subsample(sample)
        g_grillePions[x][y] = can.create_image((x+.5)*COTE_CASE, (y+.5)*COTE_CASE, image=g_photos[-1])
        # g_grillePions[x][y] = can.create_oval(x*COTE_CASE+MARGE_PIONS, y*COTE_CASE+MARGE_PIONS, \
        #             (x+1)*COTE_CASE-MARGE_PIONS, (y+1)*COTE_CASE-MARGE_PIONS, \
        #             outline='gray', width=2, fill='white' if piece < 10 else 'black')
    else:
        g_grillePions[x][y] = False

def g_dPion(x1, y1, x2, y2):
    global g_grillePions
    pion = g_grillePions[x1][y1]
    can.coords(pion, x2*COTE_CASE+MARGE_PIONS, y2*COTE_CASE+MARGE_PIONS, (x2+1)*COTE_CASE-MARGE_PIONS, (y2+1)*COTE_CASE-MARGE_PIONS)
    g_grillePions[x1][y1] = False
    g_grillePions[x2][y2] = pion

def g_cGrille():
    global g_grillePions
    g_grillePions = []
    for x in range(0, CASES_COTE): # Crée g_grillePions
        colonne = []
        for y in range(0, CASES_COTE):
            colonne.append(False)
        g_grillePions.append(colonne)

def g_remplirGrille(j_grilleF):
    global g_grillePions
    for x in range(0, CASES_COTE): # Remplis g_grillePions
        for y in range(0, CASES_COTE):
            g_cPion(x, y, j_grilleF[x][y])


# Frontend
def f_cPion(x, y, piece):
    if j_cPion(x, y, piece):
        g_cPion(x, y, piece)
        return True
    else:
        return False

def f_cPionAlea():
    g_cPion(randint(1, CASES_COTE), randint(1, CASES_COTE), 1)

def f_dPion(x1, y1, x2, y2):
    if j_dPion(x1, y1, x2, y2):
        g_dPion(x1, y1, x2, y2)
        return True
    else:
        return False

def f_nvPartie():
    j_nvPartie()
    g_cDamier()
    g_cGrille()
    g_remplirGrille(j_grille)

def f_clic(event):
    x = event.x//COTE_CASE
    y = event.y//COTE_CASE
    f_cPion(x, y, 1)


# MAIN

g_fen()
f_nvPartie()