// ============================================================================
// TIC-TAC-TOE GAME HEADER
// ============================================================================
// Concrete implementation of the Game interface for Tic-Tac-Toe

#ifndef TIC_TAC_TOE_H
#define TIC_TAC_TOE_H

#include "../lib/game.h"

/**
 * @brief Tic-Tac-Toe game implementation
 * 
 * Classic two-player Tic-Tac-Toe game with:
 * - Touch input: Tap cells to place pieces
 * - Button input: KEY0 moves selection, KEY1 places piece
 * - Win detection: Rows, columns, and diagonals
 * - Statistics tracking: Wins, ties, total moves
 * - Visual feedback: Selection highlight, turn indicator
 */
class TicTacToeGame : public Game {
public:
    /**
     * @brief Construct a new Tic-Tac-Toe game
     * @param width Display width in pixels
     * @param height Display height in pixels
     * @param renderer Pointer to low-level rendering interface
     * @param gui Pointer to GUI drawing primitives
     * @param input_manager Pointer to input manager for capability queries
     */
    TicTacToeGame(uint16_t width, uint16_t height, LowLevelRenderer* renderer, LowLevelGUI* gui, InputManager* input_manager);
    
    /**
     * @brief Initialize game state (reset board, keep statistics)
     */
    void init() override;
    
    /**
     * @brief Update game state based on input event
     * @param event Input event from InputManager
     * @return true if screen redraw is needed
     */
    bool update(const InputEvent& event) override;
    
    /**
     * @brief Draw the game to the display buffer
     */
    void draw() override;

private:
    // Game state
    struct GameState {
        uint8_t board[3][3];     // 0=empty, 1=X, 2=O
        uint8_t current_player;  // 1=X, 2=O
        uint8_t winner;          // 0=none, 1=X wins, 2=O wins, 3=tie
        uint8_t selected_row;    // Currently selected cell (for button navigation)
        uint8_t selected_col;
        bool game_over;
        
        // Game statistics
        uint32_t x_wins;
        uint32_t o_wins;
        uint32_t ties;
        uint32_t total_moves;
    } state;
    
    /**
     * @brief Check if there's a winner on the board
     * @return 0=no winner, 1=X wins, 2=O wins, 3=tie
     */
    uint8_t check_winner();
    
    // Board layout constants
    static const int BOARD_SIZE = 200;
    static const int CELL_SIZE = BOARD_SIZE / 3;
    static const int BOARD_Y = 80;  // Y position below title
};

#endif // TIC_TAC_TOE_H