#ifndef GAMESTATE_H
#define GAMESTATE_H

#include <QObject>
#include <qqmlintegration.h>
#include "playingcard.h"
#include "columnslot.h"

class GameState : public QObject
{
    Q_OBJECT
    QML_ELEMENT
    QML_UNCREATABLE("Use C++ logic to instantiate")
    Q_PROPERTY(QList<PlayingCard*> drawPile READ drawPile NOTIFY drawPileChanged)
    Q_PROPERTY(QList<PlayingCard*> throwawayPile READ throwawayPile NOTIFY throwawayPileChanged)
    Q_PROPERTY(QList<QList<ColumnSlot*>> columns READ columns NOTIFY columnsChanged)
    Q_PROPERTY(QList<QList<PlayingCard*>> foundation READ foundation NOTIFY foundationChanged)
    Q_PROPERTY(bool gameWon READ gameWon NOTIFY gameWonChanged)

public:
    explicit GameState(QObject *parent = nullptr);

    // Getters
    QList<PlayingCard*> drawPile() const;
    QList<PlayingCard*> throwawayPile() const;
    QList<QList<ColumnSlot*>> columns() const;
    QList<QList<PlayingCard*>> foundation() const;
    bool gameWon() const;

    // General functions
    void dealCards();
    void drawNextCard();

    // Manual moves (from X to Y)
    bool moveCardToColumn(int columnId);
    bool moveThrownCardToFoundation(PlayingCard::Suit foundationId);
    bool moveColumnCardToFoundation(int columnId, PlayingCard::Suit foundationId);

    // Automatic moves (from X to auto)
    bool autoMoveThrownCard();
    bool autoMoveColumnCard(int columnId);

signals:
    void drawPileChanged();
    void throwawayPileChanged();
    void columnsChanged();
    void foundationChanged();
    void gameWonChanged();

private slots:
    void onFoundationChanged();

private:
    QList<PlayingCard*> m_drawPile;
    QList<PlayingCard*> m_throwawayPile;
    QList<QList<ColumnSlot*>> m_columns;
    QList<QList<PlayingCard*>> m_foundation;
    bool m_gameWon;

    bool tryMoveCardToFoundation(PlayingCard::Suit foundationId, PlayingCard* cardToMove);
    bool tryAutoMoveCard(PlayingCard* cardToMove);
    bool isMoveToColumnLegal(PlayingCard* cardToMove, int columnId);
    void ensureColumnRevealed(int columnId);
};

#endif // GAMESTATE_H