/**
 * Controls Module
 *
 * Handles generic UI controls functionality:
 * - Toggle sliders (Ja/Nej switches)
 * - Select dropdowns
 */

/**
 * Controller for generic UI controls
 */
export class ControlsController {
  constructor() {
    this.initToggleSliders();
    this.initSelectDropdowns();
  }

  /**
   * Initialize all toggle sliders on the page
   * Toggle slider: Ja/Nej button switch with data-value attribute
   * Clicking anywhere on the slider toggles the value
   */
  private initToggleSliders(): void {
    document.querySelectorAll('swp-toggle-slider').forEach(slider => {
      slider.addEventListener('click', () => {
        const el = slider as HTMLElement;
        const newValue = el.dataset.value === 'yes' ? 'no' : 'yes';
        el.dataset.value = newValue;

        // Dispatch custom event for listeners
        slider.dispatchEvent(new CustomEvent('toggle', {
          bubbles: true,
          detail: { value: newValue }
        }));
      });
    });
  }

  /**
   * Initialize all select dropdowns on the page
   */
  private initSelectDropdowns(): void {
    document.querySelectorAll('swp-select').forEach(select => {
      const trigger = select.querySelector('button');
      const dropdown = select.querySelector('swp-select-dropdown');
      const options = select.querySelectorAll('swp-select-option');

      if (!trigger || !dropdown) return;

      // Toggle dropdown on button click
      trigger.addEventListener('click', (e) => {
        e.stopPropagation();
        const isOpen = select.classList.toggle('open');
        trigger.setAttribute('aria-expanded', isOpen ? 'true' : 'false');
      });

      // Handle option selection
      options.forEach(option => {
        option.addEventListener('click', () => {
          const value = (option as HTMLElement).dataset.value;
          const label = option.textContent?.trim() || '';

          // Update selected state
          options.forEach(o => o.classList.remove('selected'));
          option.classList.add('selected');

          // Update trigger display
          const valueEl = trigger.querySelector('swp-select-value');
          if (valueEl) {
            valueEl.textContent = label;
          }

          // Update color dot if present (for color pickers)
          const triggerDot = trigger.querySelector('swp-color-dot');
          if (triggerDot && value) {
            triggerDot.className = `is-${value}`;
          }

          // Update data-value on select element
          (select as HTMLElement).dataset.value = value;

          // Close dropdown
          select.classList.remove('open');
          trigger.setAttribute('aria-expanded', 'false');

          // Dispatch custom event
          select.dispatchEvent(new CustomEvent('change', {
            bubbles: true,
            detail: { value, label }
          }));
        });
      });
    });

    // Click outside to close any open dropdown
    document.addEventListener('click', () => {
      this.closeAllSelects();
    });

    // Keyboard navigation
    document.addEventListener('keydown', (e) => {
      const openSelect = document.querySelector('swp-select.open');
      if (!openSelect) return;

      // Escape to close
      if (e.key === 'Escape') {
        this.closeAllSelects();
        return;
      }

      // Letter key to jump to option
      if (e.key.length === 1 && /[a-zA-ZæøåÆØÅ]/.test(e.key)) {
        const options = openSelect.querySelectorAll('swp-select-option');
        const letter = e.key.toLowerCase();

        for (const option of options) {
          const text = option.textContent?.trim().toLowerCase() || '';
          if (text.startsWith(letter)) {
            // Scroll into view and highlight
            option.scrollIntoView({ block: 'nearest' });
            options.forEach(o => o.classList.remove('highlighted'));
            option.classList.add('highlighted');
            break;
          }
        }
      }

      // Enter to select highlighted option
      if (e.key === 'Enter') {
        const highlighted = openSelect.querySelector('swp-select-option.highlighted') as HTMLElement;
        if (highlighted) {
          highlighted.click();
        }
      }
    });
  }

  private closeAllSelects(): void {
    document.querySelectorAll('swp-select.open').forEach(select => {
      select.classList.remove('open');
      select.querySelector('button')?.setAttribute('aria-expanded', 'false');
    });
  }
}