import random
import logging
import tkinter as tk
from tkinter import messagebox
from tkinter import ttk
from collections import deque
import os
import sys
import argparse

# -------------------------
# Import optionnels
# -------------------------
# PIL (images de cartes)
try:
    from PIL import Image, ImageTk
    PIL_AVAILABLE = True
except Exception:
    PIL_AVAILABLE = False

# Matplotlib (graphique)
try:
    import matplotlib.pyplot as plt
    MATPLOTLIB_AVAILABLE = True
except Exception:
    MATPLOTLIB_AVAILABLE = False

# -------------------------
# Configuration du logging
# -------------------------
logging.basicConfig(level=logging.INFO, format='%(asctime)s [%(levelname)s] %(message)s')
logger = logging.getLogger('BlackjackTrainer')

# Mode debug détaillé (comportement et prints supplémentaires)
DEBUG_MODE = False

# -------------------------
# Constantes et utilitaires
# -------------------------
RANKS = ['A','2','3','4','5','6','7','8','9','10','J','Q','K']
SUITS = ['S','H','D','C']

# Valeur blackjack nominale (A peut être 11 ou 1 selon l'ajustement)
VALUE_MAP = { 'A':11, '2':2, '3':3, '4':4, '5':5, '6':6, '7':7, '8':8, '9':9, '10':10, 'J':10, 'Q':10, 'K':10 }

# Hi-Lo count mapping
HI_LO_MAP = { '2':1, '3':1, '4':1, '5':1, '6':1,
              '7':0, '8':0, '9':0,
              '10':-1, 'J':-1, 'Q':-1, 'K':-1, 'A':-1 }

# Nom du dossier d'images
CARD_IMAGE_DIR = 'cards'
CARD_IMAGE_SIZE = (72, 96)  # taille d'affichage (largeur, hauteur)

# Nombre max de slots (réduit pour éviter clipping)
MAX_CARD_SLOTS = 6

# -------------------------
# Fonctions utilitaires
# -------------------------

def build_shoe(num_decks):
    """Construit une 'shoe' (paquet multiple) sous forme deque de tuples (rank, suit)."""
    shoe = []
    for _ in range(num_decks):
        for s in SUITS:
            for r in RANKS:
                shoe.append((r, s))
    random.shuffle(shoe)
    return deque(shoe)


def card_value(card):
    """Retourne la valeur du rang (A=11 par défaut, on ajustera après)."""
    r, _ = card
    return VALUE_MAP[r]


def card_str(card):
    """Représentation texte d'une carte (ex: 'A♠')."""
    r, s = card
    suit_symbol = {'S':'♠','H':'♥','D':'♦','C':'♣'}[s]
    return f"{r}{suit_symbol}"


def hi_lo_value(card):
    """Valeur Hi-Lo d'une carte donnée (int)."""
    r, _ = card
    return HI_LO_MAP[r]

# -------------------------
# Conseiller basique (Basic Strategy simplifiée)
# -------------------------

def basic_strategy_advice(player_hand, dealer_upcard):
    """
    Fournit un conseil simple: 'Hit' ou 'Stand' (et 'Double' si applicable).
    C'est une version simplifiée pour l'entraînement.
    """
    total = sum(card_value(c) for c in player_hand)
    aces = sum(1 for c in player_hand if c[0] == 'A')
    soft = False
    if aces and total <= 21:
        soft = True
    dealer_rank = dealer_upcard[0]
    dealer_val = 10 if dealer_rank in ['10','J','Q','K'] else (11 if dealer_rank=='A' else int(dealer_rank))

    if soft:
        if total >= 19:
            return 'Stand'
        if total == 18:
            if dealer_val in [9,10,11]:
                return 'Hit'
            return 'Stand'
        return 'Hit'
    else:
        if total >= 17:
            return 'Stand'
        if total <= 11:
            return 'Hit'
        if 12 <= total <= 16:
            if 2 <= dealer_val <= 6:
                return 'Stand'
            else:
                return 'Hit'
    return 'Hit'

# -------------------------
# Classe principale GUI
# -------------------------
class BlackjackTrainerGUI:
    def __init__(self, master, num_decks=6, base_bet=10):
        self.master = master
        master.title('Blackjack Trainer - Hi-Lo')

        # Paramètres
        self.num_decks = num_decks
        self.base_bet = base_bet
        self.player_money = 1000
        self.min_bet = base_bet
        self.max_bet = 10000
        self.debug = DEBUG_MODE

        # Delais configurables (ms)
        self.dealer_draw_delay_ms = 700
        self.initial_dealer_start_delay_ms = 150
        self.end_round_delay_ms = 200
        self.player_end_delay_ms = 800  # pour afficher la carte du joueur avant résolution

        # Shoe et compte
        self.shoe = build_shoe(self.num_decks)
        self.running_count = 0
        self.hands_played = 0
        self.history_money = [self.player_money]
        self.history_count = [self.running_count]

        # Chargement images si possible
        self.card_images = {}
        if PIL_AVAILABLE:
            self._load_card_images()
        else:
            logger.info('Pillow non disponible: affichage texte des cartes')

        # Construire UI
        self._build_ui()

        # Forcer une taille minimale pour éviter clipping des slots
        try:
            self.master.minsize(480, 260)
        except Exception:
            pass

        # Démarrer la première main
        self.new_round()

    # -------------------------
    # Chargement images
    # -------------------------
    def _load_card_images(self):
        dir_path = CARD_IMAGE_DIR
        if not os.path.isdir(dir_path):
            logger.warning(f"Dossier d'images '{dir_path}' introuvable. Utilisation du texte.")
            return
        loaded = 0
        for r in RANKS:
            for s in SUITS:
                fname = f"{r}{s}.png"
                path = os.path.join(dir_path, fname)
                if os.path.isfile(path):
                    try:
                        im = Image.open(path).convert('RGBA')
                        im = im.resize(CARD_IMAGE_SIZE, Image.LANCZOS)
                        self.card_images[(r,s)] = ImageTk.PhotoImage(im)
                        loaded += 1
                    except Exception as e:
                        logger.warning(f"Erreur chargement image {path}: {e}")
                else:
                    if self.debug:
                        logger.debug(f"Image non trouvée: {path}")
        logger.info(f"Images chargées: {loaded} cartes")

    # -------------------------
    # UI Builder
    # -------------------------
    def _build_ui(self):
        # Top info
        top = ttk.Frame(self.master, padding=8)
        top.pack(fill='x')

        self.info_var = tk.StringVar()
        info_label = ttk.Label(top, textvariable=self.info_var, font=('Courier', 11))
        info_label.pack(side='left', padx=6)

        # Buttons
        btn_frame = ttk.Frame(self.master, padding=6)
        btn_frame.pack(fill='x')

        self.hit_btn = ttk.Button(btn_frame, text='Hit', command=self.hit)
        self.stand_btn = ttk.Button(btn_frame, text='Stand', command=self.stand)
        self.new_btn = ttk.Button(btn_frame, text='Nouvelle main', command=self.new_round)
        if MATPLOTLIB_AVAILABLE:
            self.graph_btn = ttk.Button(btn_frame, text='Graphiques', command=self.show_graph)
        else:
            # bouton désactivé si matplotlib absent
            self.graph_btn = ttk.Button(btn_frame, text='Graphiques (requires matplotlib)', state='disabled', command=self._graph_unavailable)
        self.debug_btn = ttk.Button(btn_frame, text='Toggle Debug', command=self.toggle_debug)

        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            w.pack(side='left', padx=4)

        # Board frames
        board = ttk.Frame(self.master, padding=6)
        board.pack(fill='both', expand=True)

        dealer_frame = ttk.LabelFrame(board, text='Croupier')
        dealer_frame.pack(fill='x', pady=4)
        # ici on crée des slots fixes pour le croupier
        self.dealer_canvas = ttk.Frame(dealer_frame)
        self.dealer_canvas.pack(fill='x', padx=6, pady=6)
        self.dealer_slots = []
        for _ in range(MAX_CARD_SLOTS):
            lbl = tk.Label(self.dealer_canvas, text='', borderwidth=1, relief='solid',
                           width=8, height=4, padx=6, pady=6, bg='white', fg='black', anchor='center')
            lbl.pack(side='left', padx=3)
            self.dealer_slots.append(lbl)

        player_frame = ttk.LabelFrame(board, text='Joueur')
        player_frame.pack(fill='x', pady=4)
        self.player_canvas = ttk.Frame(player_frame)
        self.player_canvas.pack(fill='x', padx=6, pady=6)
        self.player_slots = []
        for _ in range(MAX_CARD_SLOTS):
            lbl = tk.Label(self.player_canvas, text='', borderwidth=1, relief='solid',
                           width=8, height=4, padx=6, pady=6, bg='white', fg='black', anchor='center')
            lbl.pack(side='left', padx=3)
            self.player_slots.append(lbl)

        # Advice
        advice_frame = ttk.Frame(self.master, padding=6)
        advice_frame.pack(fill='x')
        self.advice_var = tk.StringVar()
        advice_label = ttk.Label(advice_frame, textvariable=self.advice_var, font=('Arial', 11, 'italic'))
        advice_label.pack(side='left')

        # Bet control
        bet_frame = ttk.Frame(self.master, padding=6)
        bet_frame.pack(fill='x')
        ttk.Label(bet_frame, text='Mise:').pack(side='left')
        self.bet_var = tk.IntVar(value=self.base_bet)
        self.bet_spin = ttk.Spinbox(bet_frame, from_=self.min_bet, to=self.max_bet, textvariable=self.bet_var, width=8)
        self.bet_spin.pack(side='left', padx=6)

    # -------------------------
    # Mécanique de jeu
    # -------------------------
    def _draw_from_shoe(self):
        """Tire une carte et gère le reshuffle quand la shoe est entamée."""
        # Remélanger si il reste moins de 25% de la shoe (paramètre configurable)
        if len(self.shoe) < int(0.25 * 52 * self.num_decks):
            logger.info('Reshuffle: pas assez de cartes, reshuffle')
            self.shoe = build_shoe(self.num_decks)
            self.running_count = 0
        card = self.shoe.popleft()
        # Mettre à jour running count
        self.running_count += hi_lo_value(card)
        if self.debug:
            logger.debug(f'Draw card: {card_str(card)} | hi-lo {hi_lo_value(card)} | running_count {self.running_count}')
        self.history_count.append(self.running_count)
        return card

    def _update_info(self):
        """Met à jour la barre d'information en haut (argent, compte, true count, total joueur)."""
        player_total = self._hand_value(self.player_hand) if hasattr(self, 'player_hand') else 0
        true_count = self._true_count()
        suggested_bet = self._suggest_bet()
        info_text = (f"Argent: {self.player_money}    "
                     f"Compte (running): {self.running_count}    "
                     f"True Count: {true_count:.2f}    "
                     f"Mise suggérée: {suggested_bet}    "
                     f"Main joueur: {player_total}")
        self.info_var.set(info_text)

    def _update_advice(self):
        """Met à jour le conseil de base affiché."""
        if hasattr(self, 'player_hand') and hasattr(self, 'dealer_hand') and len(self.dealer_hand) > 0:
            advice = basic_strategy_advice(self.player_hand, self.dealer_hand[0])
            self.advice_var.set(f"Conseil (basic): {advice}")
        else:
            self.advice_var.set("")

    def new_round(self):
        """Commence une nouvelle main: distribue deux cartes au joueur et au croupier."""
        # Réactiver contrôles (garantie)
        self._enable_controls()

        if self.player_money <= 0:
            messagebox.showwarning('Fin', "Vous n'avez plus d'argent. Fin de la session.")
            return

        # Distribution
        self.player_hand = [self._draw_from_shoe(), self._draw_from_shoe()]
        self.dealer_hand = [self._draw_from_shoe(), self._draw_from_shoe()]
        # récupérer la mise **courante** choisie par l'utilisateur
        self.current_bet = int(self.bet_var.get())
        self.hands_played += 1

        if self.debug:
            logger.debug(f'New round: player {self.player_hand}, dealer {self.dealer_hand}, bet {self.current_bet}')
            logger.debug(f'Dealer hand ranks: {[c[0] for c in self.dealer_hand]}')

        # Afficher la main du croupier avec la seconde carte cachée (placeholder)
        self._render_cards(hide_dealer_second=True)
        # Forcer le rendu immédiat de l'UI
        try:
            self.master.update_idletasks()
        except Exception:
            pass

        self._update_info()
        self._update_advice()

    def _render_cards(self, hide_dealer_second=False):
        """Met à jour les slots existants au lieu de recréer des widgets."""
        # Dealer
        for i in range(MAX_CARD_SLOTS):
            lbl = self.dealer_slots[i]
            if i < len(self.dealer_hand):
                # cas de la seconde carte cachée
                if i == 1 and hide_dealer_second:
                    lbl.config(text='[??]', image='', borderwidth=1, relief='solid', bg='white', fg='black')
                    lbl.image = None
                else:
                    card = self.dealer_hand[i]
                    if card in self.card_images:
                        lbl.config(image=self.card_images[card], text='', borderwidth=0, relief='flat', bg='white')
                        lbl.image = self.card_images[card]
                    else:
                        lbl.config(text=card_str(card), image='', borderwidth=1, relief='solid', bg='white', fg='black')
                        lbl.image = None
            else:
                # slot vide
                lbl.config(text='', image='', borderwidth=0, relief='flat', bg='white')
                lbl.image = None

        # Player
        for i in range(MAX_CARD_SLOTS):
            lbl = self.player_slots[i]
            if i < len(self.player_hand):
                card = self.player_hand[i]
                if card in self.card_images:
                    lbl.config(image=self.card_images[card], text='', borderwidth=0, relief='flat', bg='white')
                    lbl.image = self.card_images[card]
                else:
                    lbl.config(text=card_str(card), image='', borderwidth=1, relief='solid', bg='white', fg='black')
                    lbl.image = None
            else:
                lbl.config(text='', image='', borderwidth=0, relief='flat', bg='white')
                lbl.image = None

        # Debug: log what est affiché dans les slots
        if self.debug:
            try:
                dealer_texts = [self.dealer_slots[i].cget('text') for i in range(min(MAX_CARD_SLOTS, max(1, len(self.dealer_hand)+1)))]
                logger.debug(f"Rendering dealer slots (texts): {dealer_texts}")
            except Exception:
                pass

        # Forcer rafraîchissement UI
        try:
            self.master.update_idletasks()
        except Exception:
            pass

    def hit(self):
        """Le joueur tire une carte."""
        if not self._controls_enabled():
            return

        self.player_hand.append(self._draw_from_shoe())
        if self.debug:
            logger.debug(f'Player hits, hand now: {[card_str(c) for c in self.player_hand]}')
        total = self._hand_value(self.player_hand)

        # Toujours afficher la main complète
        self._render_cards(hide_dealer_second=True)
        self._update_info()
        self._update_advice()

        # Si la main est finie (21 ou bust), attendre un petit délai avant de résoudre pour que l'utilisateur voie la carte
        if total >= 21:
            self._disable_controls()
            self.master.after(self.player_end_delay_ms, self.resolve_round)

    def stand(self):
        """Le joueur reste: croupier joue selon règle (stand sur soft 17)."""
        self._render_cards(hide_dealer_second=False)
        self._update_info()
        self._disable_controls()
        self.master.after(self.initial_dealer_start_delay_ms, self._dealer_play)

    def _dealer_play(self):
        if self._hand_value(self.dealer_hand) < 17:
            self.dealer_hand.append(self._draw_from_shoe())
            if self.debug:
                logger.debug(f'Dealer draws: {card_str(self.dealer_hand[-1])}')
            self._render_cards(hide_dealer_second=False)
            self._update_info()
            self.master.after(self.dealer_draw_delay_ms, self._dealer_play)
        else:
            self.master.after(self.end_round_delay_ms, self._end_dealer_and_resolve)

    def _end_dealer_and_resolve(self):
        self._enable_controls()
        self.resolve_round()

    def resolve_round(self):
        player_total = self._hand_value(self.player_hand)
        dealer_total = self._hand_value(self.dealer_hand)
        bet = self.current_bet

        player_blackjack = (len(self.player_hand) == 2 and player_total == 21)
        dealer_blackjack = (len(self.dealer_hand) == 2 and dealer_total == 21)

        if player_blackjack and not dealer_blackjack:
            payout = int(1.5 * bet)
            self.player_money += payout
            result_text = f'Blackjack! Vous gagnez {payout}.'
        elif dealer_blackjack and not player_blackjack:
            self.player_money -= bet
            result_text = 'Le croupier a Blackjack. Vous perdez.'
        else:
            if player_total > 21:
                self.player_money -= bet
                result_text = 'Bust! Vous perdez.'
            elif dealer_total > 21 or player_total > dealer_total:
                self.player_money += bet
                result_text = 'Vous gagnez.'
            elif player_total == dealer_total:
                result_text = 'Push (égalité).'
            else:
                self.player_money -= bet
                result_text = 'Vous perdez.'

        self.history_money.append(self.player_money)

        message = (f"{result_text}\nArgent restant: {self.player_money}\n"
                   f"Compte running: {self.running_count} | True Count: {self._true_count():.2f}")
        messagebox.showinfo('Résultat', message)

        self.new_round()

    # -------------------------
    # Calculs & stratégies
    # -------------------------
    def _hand_value(self, hand):
        total = sum(card_value(c) for c in hand)
        aces = sum(1 for c in hand if c[0] == 'A')
        while total > 21 and aces:
            total -= 10
            aces -= 1
        return total

    def _true_count(self):
        decks_rem = max(1.0, len(self.shoe) / 52.0)
        return self.running_count / decks_rem

    def _suggest_bet(self):
        """Retourne la mise recommandée sans modifier la Spinbox de l'utilisateur."""
        tc = self._true_count()
        if tc <= 1:
            bet = self.base_bet
        else:
            level = int(tc)
            bet = min(self.player_money, self.base_bet * level)
        return bet

    # -------------------------
    # Contrôles utilitaires
    # -------------------------
    def _disable_controls(self):
        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            try:
                w.state(['disabled'])
            except Exception:
                try:
                    w.config(state='disabled')
                except Exception:
                    pass
        try:
            self.bet_spin.config(state='disabled')
        except Exception:
            pass

    def _enable_controls(self):
        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            try:
                w.state(['!disabled'])
            except Exception:
                try:
                    w.config(state='normal')
                except Exception:
                    pass
        try:
            self.bet_spin.config(state='normal')
        except Exception:
            pass

    def _controls_enabled(self):
        try:
            return 'disabled' not in self.hit_btn.state()
        except Exception:
            try:
                return self.hit_btn['state'] != 'disabled'
            except Exception:
                return True

    # -------------------------
    # Graphiques & utilitaires
    # -------------------------
    def show_graph(self):
        if not MATPLOTLIB_AVAILABLE:
            messagebox.showwarning('Graphiques indisponibles', 'matplotlib n\'est pas installé dans cet environnement.')
            return
        fig, ax1 = plt.subplots(figsize=(10,5))
        ax1.plot(self.history_money, label='Argent du joueur')
        ax1.set_xlabel('Mains jouées')
        ax1.set_ylabel('Argent')
        ax1.legend(loc='upper left')

        ax2 = ax1.twinx()
        ax2.plot(self.history_count, label='Running Count', linestyle='--')
        ax2.set_ylabel('Running Count')
        ax2.legend(loc='upper right')
        plt.title('Historique: Argent et Running Count')
        plt.grid(True)
        plt.show()

    def _graph_unavailable(self):
        messagebox.showinfo('Graphiques désactivés', 'La fonctionnalité de graphiques nécessite matplotlib.\nInstallez-le via "pip install matplotlib" si vous voulez activer cette fonction.')

    def toggle_debug(self):
        self.debug = not self.debug
        logger.setLevel(logging.DEBUG if self.debug else logging.INFO)
        logger.info(f'Debug mode set to {self.debug}')

# -------------------------
# Tests unitaires (non-GUI)
# -------------------------
def run_unit_tests():
    print('Running unit tests...')
    shoe = build_shoe(2)
    assert len(shoe) == 52 * 2, 'build_shoe: taille incorrecte'
    assert card_value(('A','S')) == 11
    assert card_value(('K','H')) == 10
    assert hi_lo_value(('2','C')) == 1
    assert hi_lo_value(('A','D')) == -1
    advice = basic_strategy_advice([('Q','H'),('4','D')], ('6','S'))
    assert advice == 'Stand', f'Expected Stand, got {advice}'
    advice2 = basic_strategy_advice([('A','H'),('6','D')], ('10','S'))
    assert advice2 == 'Hit', f'Expected Hit, got {advice2}'
    advice3 = basic_strategy_advice([('10','H'),('9','D')], ('7','C'))
    assert advice3 == 'Stand', f'Expected Stand, got {advice3}'
    print('All non-GUI tests passed.')

# -------------------------
# Main
# -------------------------
if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Blackjack Trainer GUI')
    parser.add_argument('--test', action='store_true', help='Run non-GUI unit tests and exit')
    args = parser.parse_args()

    if args.test:
        run_unit_tests()
        sys.exit(0)

    try:
        root = tk.Tk()
    except Exception as e:
        print('Impossible de démarrer l\'interface graphique:', e)
        sys.exit(1)

    gui = BlackjackTrainerGUI(root, num_decks=6, base_bet=10)
    root.mainloop()

import random
import logging
import tkinter as tk
from tkinter import messagebox
from tkinter import ttk
from collections import deque
import os
import sys
import argparse

# -------------------------
# Import optionnels
# -------------------------
# PIL (images de cartes)
try:
    from PIL import Image, ImageTk
    PIL_AVAILABLE = True
except Exception:
    PIL_AVAILABLE = False

# Matplotlib (graphique)
try:
    import matplotlib.pyplot as plt
    MATPLOTLIB_AVAILABLE = True
except Exception:
    MATPLOTLIB_AVAILABLE = False

# -------------------------
# Configuration du logging
# -------------------------
logging.basicConfig(level=logging.INFO, format='%(asctime)s [%(levelname)s] %(message)s')
logger = logging.getLogger('BlackjackTrainer')

# Mode debug détaillé (comportement et prints supplémentaires)
DEBUG_MODE = False

# -------------------------
# Constantes et utilitaires
# -------------------------
RANKS = ['A','2','3','4','5','6','7','8','9','10','J','Q','K']
SUITS = ['S','H','D','C']

# Valeur blackjack nominale (A peut être 11 ou 1 selon l'ajustement)
VALUE_MAP = { 'A':11, '2':2, '3':3, '4':4, '5':5, '6':6, '7':7, '8':8, '9':9, '10':10, 'J':10, 'Q':10, 'K':10 }

# Hi-Lo count mapping
HI_LO_MAP = { '2':1, '3':1, '4':1, '5':1, '6':1,
              '7':0, '8':0, '9':0,
              '10':-1, 'J':-1, 'Q':-1, 'K':-1, 'A':-1 }

# Nom du dossier d'images
CARD_IMAGE_DIR = 'cards'
CARD_IMAGE_SIZE = (72, 96)  # taille d'affichage (largeur, hauteur)

# Nombre max de slots (réduit pour éviter clipping)
MAX_CARD_SLOTS = 6

# -------------------------
# Fonctions utilitaires
# -------------------------

def build_shoe(num_decks):
    """Construit une 'shoe' (paquet multiple) sous forme deque de tuples (rank, suit)."""
    shoe = []
    for _ in range(num_decks):
        for s in SUITS:
            for r in RANKS:
                shoe.append((r, s))
    random.shuffle(shoe)
    return deque(shoe)


def card_value(card):
    """Retourne la valeur du rang (A=11 par défaut, on ajustera après)."""
    r, _ = card
    return VALUE_MAP[r]


def card_str(card):
    """Représentation texte d'une carte (ex: 'A♠')."""
    r, s = card
    suit_symbol = {'S':'♠','H':'♥','D':'♦','C':'♣'}[s]
    return f"{r}{suit_symbol}"


def hi_lo_value(card):
    """Valeur Hi-Lo d'une carte donnée (int)."""
    r, _ = card
    return HI_LO_MAP[r]

# -------------------------
# Conseiller basique (Basic Strategy simplifiée)
# -------------------------

def basic_strategy_advice(player_hand, dealer_upcard):
    """
    Fournit un conseil simple: 'Hit' ou 'Stand' (et 'Double' si applicable).
    C'est une version simplifiée pour l'entraînement.
    """
    total = sum(card_value(c) for c in player_hand)
    aces = sum(1 for c in player_hand if c[0] == 'A')
    soft = False
    if aces and total <= 21:
        soft = True
    dealer_rank = dealer_upcard[0]
    dealer_val = 10 if dealer_rank in ['10','J','Q','K'] else (11 if dealer_rank=='A' else int(dealer_rank))

    if soft:
        if total >= 19:
            return 'Stand'
        if total == 18:
            if dealer_val in [9,10,11]:
                return 'Hit'
            return 'Stand'
        return 'Hit'
    else:
        if total >= 17:
            return 'Stand'
        if total <= 11:
            return 'Hit'
        if 12 <= total <= 16:
            if 2 <= dealer_val <= 6:
                return 'Stand'
            else:
                return 'Hit'
    return 'Hit'

# -------------------------
# Classe principale GUI
# -------------------------
class BlackjackTrainerGUI:
    def __init__(self, master, num_decks=6, base_bet=10):
        self.master = master
        master.title('Blackjack Trainer - Hi-Lo')

        # Paramètres
        self.num_decks = num_decks
        self.base_bet = base_bet
        self.player_money = 1000
        self.min_bet = base_bet
        self.max_bet = 10000
        self.debug = DEBUG_MODE

        # Delais configurables (ms)
        self.dealer_draw_delay_ms = 700
        self.initial_dealer_start_delay_ms = 150
        self.end_round_delay_ms = 200
        self.player_end_delay_ms = 800  # pour afficher la carte du joueur avant résolution

        # Shoe et compte
        self.shoe = build_shoe(self.num_decks)
        self.running_count = 0
        self.hands_played = 0
        self.history_money = [self.player_money]
        self.history_count = [self.running_count]

        # Chargement images si possible
        self.card_images = {}
        if PIL_AVAILABLE:
            self._load_card_images()
        else:
            logger.info('Pillow non disponible: affichage texte des cartes')

        # Construire UI
        self._build_ui()

        # Forcer une taille minimale pour éviter clipping des slots
        try:
            self.master.minsize(480, 260)
        except Exception:
            pass

        # Démarrer la première main
        self.new_round()

    # -------------------------
    # Chargement images
    # -------------------------
    def _load_card_images(self):
        dir_path = CARD_IMAGE_DIR
        if not os.path.isdir(dir_path):
            logger.warning(f"Dossier d'images '{dir_path}' introuvable. Utilisation du texte.")
            return
        loaded = 0
        for r in RANKS:
            for s in SUITS:
                fname = f"{r}{s}.png"
                path = os.path.join(dir_path, fname)
                if os.path.isfile(path):
                    try:
                        im = Image.open(path).convert('RGBA')
                        im = im.resize(CARD_IMAGE_SIZE, Image.LANCZOS)
                        self.card_images[(r,s)] = ImageTk.PhotoImage(im)
                        loaded += 1
                    except Exception as e:
                        logger.warning(f"Erreur chargement image {path}: {e}")
                else:
                    if self.debug:
                        logger.debug(f"Image non trouvée: {path}")
        logger.info(f"Images chargées: {loaded} cartes")

    # -------------------------
    # UI Builder
    # -------------------------
    def _build_ui(self):
        # Top info
        top = ttk.Frame(self.master, padding=8)
        top.pack(fill='x')

        self.info_var = tk.StringVar()
        info_label = ttk.Label(top, textvariable=self.info_var, font=('Courier', 11))
        info_label.pack(side='left', padx=6)

        # Buttons
        btn_frame = ttk.Frame(self.master, padding=6)
        btn_frame.pack(fill='x')

        self.hit_btn = ttk.Button(btn_frame, text='Hit', command=self.hit)
        self.stand_btn = ttk.Button(btn_frame, text='Stand', command=self.stand)
        self.new_btn = ttk.Button(btn_frame, text='Nouvelle main', command=self.new_round)
        if MATPLOTLIB_AVAILABLE:
            self.graph_btn = ttk.Button(btn_frame, text='Graphiques', command=self.show_graph)
        else:
            # bouton désactivé si matplotlib absent
            self.graph_btn = ttk.Button(btn_frame, text='Graphiques (requires matplotlib)', state='disabled', command=self._graph_unavailable)
        self.debug_btn = ttk.Button(btn_frame, text='Toggle Debug', command=self.toggle_debug)

        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            w.pack(side='left', padx=4)

        # Board frames
        board = ttk.Frame(self.master, padding=6)
        board.pack(fill='both', expand=True)

        dealer_frame = ttk.LabelFrame(board, text='Croupier')
        dealer_frame.pack(fill='x', pady=4)
        # ici on crée des slots fixes pour le croupier
        self.dealer_canvas = ttk.Frame(dealer_frame)
        self.dealer_canvas.pack(fill='x', padx=6, pady=6)
        self.dealer_slots = []
        for _ in range(MAX_CARD_SLOTS):
            lbl = tk.Label(self.dealer_canvas, text='', borderwidth=1, relief='solid',
                           width=8, height=4, padx=6, pady=6, bg='white', fg='black', anchor='center')
            lbl.pack(side='left', padx=3)
            self.dealer_slots.append(lbl)

        player_frame = ttk.LabelFrame(board, text='Joueur')
        player_frame.pack(fill='x', pady=4)
        self.player_canvas = ttk.Frame(player_frame)
        self.player_canvas.pack(fill='x', padx=6, pady=6)
        self.player_slots = []
        for _ in range(MAX_CARD_SLOTS):
            lbl = tk.Label(self.player_canvas, text='', borderwidth=1, relief='solid',
                           width=8, height=4, padx=6, pady=6, bg='white', fg='black', anchor='center')
            lbl.pack(side='left', padx=3)
            self.player_slots.append(lbl)

        # Advice
        advice_frame = ttk.Frame(self.master, padding=6)
        advice_frame.pack(fill='x')
        self.advice_var = tk.StringVar()
        advice_label = ttk.Label(advice_frame, textvariable=self.advice_var, font=('Arial', 11, 'italic'))
        advice_label.pack(side='left')

        # Bet control
        bet_frame = ttk.Frame(self.master, padding=6)
        bet_frame.pack(fill='x')
        ttk.Label(bet_frame, text='Mise:').pack(side='left')
        self.bet_var = tk.IntVar(value=self.base_bet)
        self.bet_spin = ttk.Spinbox(bet_frame, from_=self.min_bet, to=self.max_bet, textvariable=self.bet_var, width=8)
        self.bet_spin.pack(side='left', padx=6)

    # -------------------------
    # Mécanique de jeu
    # -------------------------
    def _draw_from_shoe(self):
        """Tire une carte et gère le reshuffle quand la shoe est entamée."""
        # Remélanger si il reste moins de 25% de la shoe (paramètre configurable)
        if len(self.shoe) < int(0.25 * 52 * self.num_decks):
            logger.info('Reshuffle: pas assez de cartes, reshuffle')
            self.shoe = build_shoe(self.num_decks)
            self.running_count = 0
        card = self.shoe.popleft()
        # Mettre à jour running count
        self.running_count += hi_lo_value(card)
        if self.debug:
            logger.debug(f'Draw card: {card_str(card)} | hi-lo {hi_lo_value(card)} | running_count {self.running_count}')
        self.history_count.append(self.running_count)
        return card

    def _update_info(self):
        """Met à jour la barre d'information en haut (argent, compte, true count, total joueur)."""
        player_total = self._hand_value(self.player_hand) if hasattr(self, 'player_hand') else 0
        true_count = self._true_count()
        suggested_bet = self._suggest_bet()
        info_text = (f"Argent: {self.player_money}    "
                     f"Compte (running): {self.running_count}    "
                     f"True Count: {true_count:.2f}    "
                     f"Mise suggérée: {suggested_bet}    "
                     f"Main joueur: {player_total}")
        self.info_var.set(info_text)

    def _update_advice(self):
        """Met à jour le conseil de base affiché."""
        if hasattr(self, 'player_hand') and hasattr(self, 'dealer_hand') and len(self.dealer_hand) > 0:
            advice = basic_strategy_advice(self.player_hand, self.dealer_hand[0])
            self.advice_var.set(f"Conseil (basic): {advice}")
        else:
            self.advice_var.set("")

    def new_round(self):
        """Commence une nouvelle main: distribue deux cartes au joueur et au croupier."""
        # Réactiver contrôles (garantie)
        self._enable_controls()

        if self.player_money <= 0:
            messagebox.showwarning('Fin', "Vous n'avez plus d'argent. Fin de la session.")
            return

        # Distribution
        self.player_hand = [self._draw_from_shoe(), self._draw_from_shoe()]
        self.dealer_hand = [self._draw_from_shoe(), self._draw_from_shoe()]
        # récupérer la mise **courante** choisie par l'utilisateur
        self.current_bet = int(self.bet_var.get())
        self.hands_played += 1

        if self.debug:
            logger.debug(f'New round: player {self.player_hand}, dealer {self.dealer_hand}, bet {self.current_bet}')
            logger.debug(f'Dealer hand ranks: {[c[0] for c in self.dealer_hand]}')

        # Afficher la main du croupier avec la seconde carte cachée (placeholder)
        self._render_cards(hide_dealer_second=True)
        # Forcer le rendu immédiat de l'UI
        try:
            self.master.update_idletasks()
        except Exception:
            pass

        self._update_info()
        self._update_advice()

    def _render_cards(self, hide_dealer_second=False):
        """Met à jour les slots existants au lieu de recréer des widgets."""
        # Dealer
        for i in range(MAX_CARD_SLOTS):
            lbl = self.dealer_slots[i]
            if i < len(self.dealer_hand):
                # cas de la seconde carte cachée
                if i == 1 and hide_dealer_second:
                    lbl.config(text='[??]', image='', borderwidth=1, relief='solid', bg='white', fg='black')
                    lbl.image = None
                else:
                    card = self.dealer_hand[i]
                    if card in self.card_images:
                        lbl.config(image=self.card_images[card], text='', borderwidth=0, relief='flat', bg='white')
                        lbl.image = self.card_images[card]
                    else:
                        lbl.config(text=card_str(card), image='', borderwidth=1, relief='solid', bg='white', fg='black')
                        lbl.image = None
            else:
                # slot vide
                lbl.config(text='', image='', borderwidth=0, relief='flat', bg='white')
                lbl.image = None

        # Player
        for i in range(MAX_CARD_SLOTS):
            lbl = self.player_slots[i]
            if i < len(self.player_hand):
                card = self.player_hand[i]
                if card in self.card_images:
                    lbl.config(image=self.card_images[card], text='', borderwidth=0, relief='flat', bg='white')
                    lbl.image = self.card_images[card]
                else:
                    lbl.config(text=card_str(card), image='', borderwidth=1, relief='solid', bg='white', fg='black')
                    lbl.image = None
            else:
                lbl.config(text='', image='', borderwidth=0, relief='flat', bg='white')
                lbl.image = None

        # Debug: log what est affiché dans les slots
        if self.debug:
            try:
                dealer_texts = [self.dealer_slots[i].cget('text') for i in range(min(MAX_CARD_SLOTS, max(1, len(self.dealer_hand)+1)))]
                logger.debug(f"Rendering dealer slots (texts): {dealer_texts}")
            except Exception:
                pass

        # Forcer rafraîchissement UI
        try:
            self.master.update_idletasks()
        except Exception:
            pass

    def hit(self):
        """Le joueur tire une carte."""
        if not self._controls_enabled():
            return

        self.player_hand.append(self._draw_from_shoe())
        if self.debug:
            logger.debug(f'Player hits, hand now: {[card_str(c) for c in self.player_hand]}')
        total = self._hand_value(self.player_hand)

        # Toujours afficher la main complète
        self._render_cards(hide_dealer_second=True)
        self._update_info()
        self._update_advice()

        # Si la main est finie (21 ou bust), attendre un petit délai avant de résoudre pour que l'utilisateur voie la carte
        if total >= 21:
            self._disable_controls()
            self.master.after(self.player_end_delay_ms, self.resolve_round)

    def stand(self):
        """Le joueur reste: croupier joue selon règle (stand sur soft 17)."""
        self._render_cards(hide_dealer_second=False)
        self._update_info()
        self._disable_controls()
        self.master.after(self.initial_dealer_start_delay_ms, self._dealer_play)

    def _dealer_play(self):
        if self._hand_value(self.dealer_hand) < 17:
            self.dealer_hand.append(self._draw_from_shoe())
            if self.debug:
                logger.debug(f'Dealer draws: {card_str(self.dealer_hand[-1])}')
            self._render_cards(hide_dealer_second=False)
            self._update_info()
            self.master.after(self.dealer_draw_delay_ms, self._dealer_play)
        else:
            self.master.after(self.end_round_delay_ms, self._end_dealer_and_resolve)

    def _end_dealer_and_resolve(self):
        self._enable_controls()
        self.resolve_round()

    def resolve_round(self):
        player_total = self._hand_value(self.player_hand)
        dealer_total = self._hand_value(self.dealer_hand)
        bet = self.current_bet

        player_blackjack = (len(self.player_hand) == 2 and player_total == 21)
        dealer_blackjack = (len(self.dealer_hand) == 2 and dealer_total == 21)

        if player_blackjack and not dealer_blackjack:
            payout = int(1.5 * bet)
            self.player_money += payout
            result_text = f'Blackjack! Vous gagnez {payout}.'
        elif dealer_blackjack and not player_blackjack:
            self.player_money -= bet
            result_text = 'Le croupier a Blackjack. Vous perdez.'
        else:
            if player_total > 21:
                self.player_money -= bet
                result_text = 'Bust! Vous perdez.'
            elif dealer_total > 21 or player_total > dealer_total:
                self.player_money += bet
                result_text = 'Vous gagnez.'
            elif player_total == dealer_total:
                result_text = 'Push (égalité).'
            else:
                self.player_money -= bet
                result_text = 'Vous perdez.'

        self.history_money.append(self.player_money)

        message = (f"{result_text}\nArgent restant: {self.player_money}\n"
                   f"Compte running: {self.running_count} | True Count: {self._true_count():.2f}")
        messagebox.showinfo('Résultat', message)

        self.new_round()

    # -------------------------
    # Calculs & stratégies
    # -------------------------
    def _hand_value(self, hand):
        total = sum(card_value(c) for c in hand)
        aces = sum(1 for c in hand if c[0] == 'A')
        while total > 21 and aces:
            total -= 10
            aces -= 1
        return total

    def _true_count(self):
        decks_rem = max(1.0, len(self.shoe) / 52.0)
        return self.running_count / decks_rem

    def _suggest_bet(self):
        """Retourne la mise recommandée sans modifier la Spinbox de l'utilisateur."""
        tc = self._true_count()
        if tc <= 1:
            bet = self.base_bet
        else:
            level = int(tc)
            bet = min(self.player_money, self.base_bet * level)
        return bet

    # -------------------------
    # Contrôles utilitaires
    # -------------------------
    def _disable_controls(self):
        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            try:
                w.state(['disabled'])
            except Exception:
                try:
                    w.config(state='disabled')
                except Exception:
                    pass
        try:
            self.bet_spin.config(state='disabled')
        except Exception:
            pass

    def _enable_controls(self):
        for w in (self.hit_btn, self.stand_btn, self.new_btn, self.graph_btn, self.debug_btn):
            try:
                w.state(['!disabled'])
            except Exception:
                try:
                    w.config(state='normal')
                except Exception:
                    pass
        try:
            self.bet_spin.config(state='normal')
        except Exception:
            pass

    def _controls_enabled(self):
        try:
            return 'disabled' not in self.hit_btn.state()
        except Exception:
            try:
                return self.hit_btn['state'] != 'disabled'
            except Exception:
                return True

    # -------------------------
    # Graphiques & utilitaires
    # -------------------------
    def show_graph(self):
        if not MATPLOTLIB_AVAILABLE:
            messagebox.showwarning('Graphiques indisponibles', 'matplotlib n\'est pas installé dans cet environnement.')
            return
        fig, ax1 = plt.subplots(figsize=(10,5))
        ax1.plot(self.history_money, label='Argent du joueur')
        ax1.set_xlabel('Mains jouées')
        ax1.set_ylabel('Argent')
        ax1.legend(loc='upper left')

        ax2 = ax1.twinx()
        ax2.plot(self.history_count, label='Running Count', linestyle='--')
        ax2.set_ylabel('Running Count')
        ax2.legend(loc='upper right')
        plt.title('Historique: Argent et Running Count')
        plt.grid(True)
        plt.show()

    def _graph_unavailable(self):
        messagebox.showinfo('Graphiques désactivés', 'La fonctionnalité de graphiques nécessite matplotlib.\nInstallez-le via "pip install matplotlib" si vous voulez activer cette fonction.')

    def toggle_debug(self):
        self.debug = not self.debug
        logger.setLevel(logging.DEBUG if self.debug else logging.INFO)
        logger.info(f'Debug mode set to {self.debug}')

# -------------------------
# Tests unitaires (non-GUI)
# -------------------------
def run_unit_tests():
    print('Running unit tests...')
    shoe = build_shoe(2)
    assert len(shoe) == 52 * 2, 'build_shoe: taille incorrecte'
    assert card_value(('A','S')) == 11
    assert card_value(('K','H')) == 10
    assert hi_lo_value(('2','C')) == 1
    assert hi_lo_value(('A','D')) == -1
    advice = basic_strategy_advice([('Q','H'),('4','D')], ('6','S'))
    assert advice == 'Stand', f'Expected Stand, got {advice}'
    advice2 = basic_strategy_advice([('A','H'),('6','D')], ('10','S'))
    assert advice2 == 'Hit', f'Expected Hit, got {advice2}'
    advice3 = basic_strategy_advice([('10','H'),('9','D')], ('7','C'))
    assert advice3 == 'Stand', f'Expected Stand, got {advice3}'
    print('All non-GUI tests passed.')

# -------------------------
# Main
# -------------------------
if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Blackjack Trainer GUI')
    parser.add_argument('--test', action='store_true', help='Run non-GUI unit tests and exit')
    args = parser.parse_args()

    if args.test:
        run_unit_tests()
        sys.exit(0)

    try:
        root = tk.Tk()
    except Exception as e:
        print('Impossible de démarrer l\'interface graphique:', e)
        sys.exit(1)

    gui = BlackjackTrainerGUI(root, num_decks=6, base_bet=10)
    root.mainloop()