#include <iostream>
#include <vector>
#include <string>
#include <random>
#include <utility>
#include <algorithm>

using namespace std;

vector<string> const colors { "spades", "hearts", "diamonds", "clubs" };
vector<string> const values { "ace", "2", "3", "4", "5", "6", "7", "8", "9", "10", "jack", "queen", "king" };

struct Card
{
    // 1 är ess
    // 11 är knekt
    // 12 är dam
    // 13 är kung
    int value{1};
    string color{colors[0]};

    void print() const
    {
        cout << values[value-1] << " of " << color;
    }
};

class Deck
{
public:

    Deck() : cards(52)
    {
        int index{0};
        for (int value{1}; value <= 13; ++value)
        {
            for (auto& color : colors)
            {
                cards[index] = Card{value, color};
                ++index;
            }
        }
    }

    void shuffle(random_device& rd)
    {
        std::shuffle(cards.begin(), cards.end(), rd);
    }

    Card draw()
    {
        Card result {cards.back()};
        cards.pop_back();
        return result;
    }

    vector<Card> draw(int N)
    {
        auto start {cards.end() - N};
        vector<Card> result{start, cards.end()};
        cards.erase(start, cards.end());
        return result;
    }

private:

    vector<Card> cards{};
    
};

int sum_hand(vector<Card> const& hand)
{
    int sum{0};
    for (auto const& c : hand)
    {
        if (c.value > 10)
            sum += 10;
        else
            sum += c.value;
    }
    return sum;
}

int play(string const& name, Deck& deck, int limit)
{
    auto hand{deck.draw(2)};
    cout << name << " hand:" << endl;
    for (auto const& c : hand)
    {
        c.print();
        cout << endl;
    }
    while (sum_hand(hand) <= limit)
    {
        Card c{deck.draw()};
        cout << name << " drew ";
        c.print();
        cout << endl;
        hand.push_back(c);
    }
    int sum{sum_hand(hand)};
    if (sum > 21)
    {
        cout << name << " is bust!" << endl;
    }
    else
    {
        cout << name << " stands with " << sum << " points!" << endl;
    }
    return sum;
}

int main()
{
    // du får inte skapa fler random_device än denna
    random_device rd;
    Deck deck{};
    deck.shuffle(rd);
    int player {play("player", deck, 17)};
    bool player_won{false};
    if (player == 21)
    {
        player_won = true;
    }
    else if (player < 21)
    {
        int dealer {play("dealer", deck, player)};
        if (dealer <= player || dealer > 21)
        {
            player_won = true;
        }
    }
    if (player_won)
    {
        cout << "player won!" << endl;
    }
    else
    {
        cout << "dealer won!" << endl;
    }
}