import random

ranks = [ 'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K' ]
suits = [ 'Spades', 'Clubs', 'Hearts', 'Diamonds' ]



d = [ ( rank, suit ) for rank in ranks for suit in suits ]
random.shuffle( d )

def d_c ( d ) :
   return d.pop( 0 )

def d_i_c( d, ph, dh ) :
    for _ in range( 2 ) :
        ph.append(d_c(d))
        dh.append(d_c(d))

def c_h_v( h ) :
        v = 0
        na = 0
        for c in h :
            rank = c[0]
            if rank in ["J", "Q", "K" ] :
                v += 10
            elif rank == "A" :
                na += 1
                v += 11
            else:
                v += int(rank)

        while v > 21 and na > 0 :
            v -= 10 
            na -= 1
        
        return v 

def dis_h(h, hidden=False) :
    if hidden :
        print( "Hidden Card" )
        for c in h[1:] :
            print(c)
    
    else :
        for c in h :
            print(c)
    
    print( "Total value:", c_h_v(h) )

def p_t( d, ph, dh ) :
    while True:
        dis_h( ph )
        c = input( "Do you want to stand? (H/S) " ).lower()
        if c == "h" :
            ph.append( d_c( d ) )
            if c_h_v( ph ) > 21 :
                dh( ph )
                print( "You bust! Dealer wins." )
                return 'bust'
            elif c == "s" :
                return 'stand'
            else :
                print( "Invalid choice. Please enter 'h' or's'.")

def d_t( d, dh ) :
    while c_h_v( dh ) <17 :
        dh.append( d_c( d ) )
        if c_h_v( dh ) > 21 :
            return "Bust"
    return "stand" 

def d_w( ph, dh ) :
    pv = c_h_v( ph )
    dv = c_h_v( dh )
    if pv > 21:
        return 'dealer'
    elif dv > 21 :
        return 'player' 
    elif pv > dv :
        return 'player' 
    elif pv < dv :
        return 'dealer'
    else :
        return 'tie'


def p_bj() :
    print( "Welcome to blackjack!" )

    while True :
        d = [ ( rank, suit ) for rank in ranks for suit in suits ]
        random.shuffle( d )

        ph = []
        dh = []

        d_i_c( d, ph, dh )
        
        pr = p_t( d, ph, dh )
        if pr == "Bust" :
            continue

        dr = d_t( d, dh )
        if dr == "Bust" :
            print( "Dealer busts! Player wins." )
            continue 

        w = d_w( ph, dh )
        if w == 'player' :
            print( "Player wins!" )
        elif w == 'dealer' :
            print( "Dealer wins!" ) 
        else :
            print( "Its a tie!" )

        pa = input( "Do you want to play again? (y/n): " ).lower()
        if pa != 'y' :
            print( "Thanks for playing!" )
            break

p_bj()