/**
 * Keyboard Shortcuts Composable
 * Manages keyboard event listeners and shortcuts
 */

import { onMounted, onUnmounted } from 'vue';

/**
 * Register keyboard shortcuts
 * @param {Object} shortcuts - Map of key combinations to handlers
 * @returns {Object} Control functions
 * 
 * Example shortcuts object:
 * {
 *   'ctrl+f': () => focusSearch(),
 *   'ctrl+c': () => copySelected(),
 *   'escape': () => clearSelection()
 * }
 */
export function useKeyboardShortcuts(shortcuts = {}) {
  const handleKeyDown = (event) => {
    const key = event.key.toLowerCase();
    const ctrl = event.ctrlKey || event.metaKey; // Support both Ctrl and Cmd
    const shift = event.shiftKey;
    const alt = event.altKey;

    // Build combination string
    let combination = '';
    if (ctrl) combination += 'ctrl+';
    if (shift) combination += 'shift+';
    if (alt) combination += 'alt+';
    combination += key;

    // Also check without modifiers
    const simpleKey = key;

    // Try to find and execute handler
    const handler = shortcuts[combination] || shortcuts[simpleKey];
    
    if (handler) {
      event.preventDefault();
      handler(event);
    }
  };

  onMounted(() => {
    window.addEventListener('keydown', handleKeyDown);
  });

  onUnmounted(() => {
    window.removeEventListener('keydown', handleKeyDown);
  });

  return {
    // Can add control functions here if needed
  };
}