package com.openosrs.client.engine;

import com.openosrs.client.core.ClientCore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.atomic.AtomicBoolean;

/**
 * InputEngine - Handles user input and automated input from agents.
 */
class InputEngine {
    private static final Logger logger = LoggerFactory.getLogger(InputEngine.class);
    
    private final ClientCore clientCore;
    private final AtomicBoolean initialized = new AtomicBoolean(false);
    
    // Input state
    private final AtomicBoolean[] keysPressed = new AtomicBoolean[256];
    private int mouseX = 0, mouseY = 0;
    private boolean mousePressed = false;
    
    public InputEngine(ClientCore clientCore) {
        this.clientCore = clientCore;
        
        // Initialize key states
        for (int i = 0; i < keysPressed.length; i++) {
            keysPressed[i] = new AtomicBoolean(false);
        }
    }
    
    public void initialize() {
        if (initialized.get()) {
            logger.warn("InputEngine already initialized");
            return;
        }
        
        logger.info("Initializing InputEngine");
        
        try {
            // Initialize input systems
            // In a real implementation, this would set up keyboard/mouse listeners
            
            initialized.set(true);
            logger.info("InputEngine initialized");
            
        } catch (Exception e) {
            logger.error("Failed to initialize InputEngine", e);
            throw new RuntimeException("InputEngine initialization failed", e);
        }
    }
    
    public void shutdown() {
        if (!initialized.get()) {
            return;
        }
        
        logger.info("Shutting down InputEngine");
        
        try {
            // Cleanup input resources
            
            initialized.set(false);
            logger.info("InputEngine shutdown complete");
            
        } catch (Exception e) {
            logger.error("Error during InputEngine shutdown", e);
        }
    }
    
    /**
     * Process input events (called each game tick).
     */
    public void processInput() {
        if (!initialized.get()) {
            return;
        }
        
        try {
            // Process any pending input events
            // This would handle keyboard/mouse events
            
        } catch (Exception e) {
            logger.error("Error processing input", e);
        }
    }
    
    // Agent input methods - allow programmatic input
    public void simulateKeyPress(int keyCode) {
        if (keyCode >= 0 && keyCode < keysPressed.length) {
            keysPressed[keyCode].set(true);
            logger.debug("Key pressed: {}", keyCode);
        }
    }
    
    public void simulateKeyRelease(int keyCode) {
        if (keyCode >= 0 && keyCode < keysPressed.length) {
            keysPressed[keyCode].set(false);
            logger.debug("Key released: {}", keyCode);
        }
    }
    
    public void simulateMouseMove(int x, int y) {
        mouseX = x;
        mouseY = y;
        logger.debug("Mouse moved to: ({}, {})", x, y);
    }
    
    public void simulateMouseClick(int x, int y) {
        mouseX = x;
        mouseY = y;
        mousePressed = true;
        logger.debug("Mouse clicked at: ({}, {})", x, y);
        
        // Reset mouse state after a brief moment
        new Thread(() -> {
            try {
                Thread.sleep(50);
                mousePressed = false;
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }).start();
    }
    
    // Input state queries
    public boolean isKeyPressed(int keyCode) {
        return keyCode >= 0 && keyCode < keysPressed.length && keysPressed[keyCode].get();
    }
    
    public int getMouseX() { return mouseX; }
    public int getMouseY() { return mouseY; }
    public boolean isMousePressed() { return mousePressed; }
    public boolean isInitialized() { return initialized.get(); }
}