import {
  DeesElement,
  html,
  property,
  customElement,
  cssManager,
  css,
  unsafeCSS,
  type TemplateResult,
} from '@design.estate/dees-element';

// Import design tokens
import { colors, bdTheme } from './00colors.js';
import { spacing, radius, shadows, transitions } from './00tokens.js';
import { fontFamilies, typography } from './00fonts.js';

declare global {
  interface HTMLElementTagNameMap {
    'sio-button': SioButton;
  }
}

@customElement('sio-button')
export class SioButton extends DeesElement {
  public static demo = () => html`
    <div style="display: flex; gap: 16px; flex-wrap: wrap; align-items: center;">
      <sio-button>Default</sio-button>
      <sio-button type="primary">Primary</sio-button>
      <sio-button type="destructive">Delete</sio-button>
      <sio-button type="outline">Outline</sio-button>
      <sio-button type="ghost">Ghost</sio-button>
      <sio-button size="sm">Small</sio-button>
      <sio-button size="lg">Large</sio-button>
      <sio-button disabled>Disabled</sio-button>
    </div>
  `;

  @property({ type: String })
  public accessor text: string = '';

  @property({ type: String })
  public accessor type: 'default' | 'primary' | 'secondary' | 'destructive' | 'outline' | 'ghost' = 'default';

  @property({ type: String })
  public accessor size: 'sm' | 'default' | 'lg' = 'default';

  @property({ type: Boolean, reflect: true })
  public accessor disabled: boolean = false;

  @property({ type: String })
  public accessor status: 'normal' | 'pending' | 'success' | 'error' = 'normal';

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host {
        display: inline-block;
        font-family: ${unsafeCSS(fontFamilies.sans)};
      }

      :host([disabled]) {
        pointer-events: none;
      }

      .button {
        position: relative;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        white-space: nowrap;
        border-radius: 6px;
        font-weight: 500;
        font-size: 14px;
        line-height: 1;
        letter-spacing: -0.01em;
        transition: all 120ms ease;
        cursor: pointer;
        user-select: none;
        outline: none;
        border: none;
        gap: 6px;
      }

      /* Size variants */
      .button.size-sm {
        height: 32px;
        padding: 0 12px;
        font-size: 13px;
      }

      .button.size-default {
        height: 36px;
        padding: 0 16px;
        font-size: 14px;
      }

      .button.size-lg {
        height: 42px;
        padding: 0 24px;
        font-size: 15px;
      }

      /* Type variants */
      .button.default {
        background: ${bdTheme('hsl(0 0% 95%)', 'hsl(0 0% 15%)')};
        color: ${bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 95%)')};
      }

      .button.default:hover:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 91%)', 'hsl(0 0% 20%)')};
      }

      .button.default:active:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 87%)', 'hsl(0 0% 18%)')};
      }

      .button.primary {
        background: ${bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 95%)')};
        color: ${bdTheme('hsl(0 0% 100%)', 'hsl(0 0% 0%)')};
      }

      .button.primary:hover:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 25%)', 'hsl(0 0% 100%)')};
      }

      .button.primary:active:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 20%)', 'hsl(0 0% 90%)')};
      }

      /* Secondary variant */
      .button.secondary {
        background: transparent;
        color: ${bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 95%)')};
        box-shadow: inset 0 0 0 1px ${bdTheme('hsl(0 0% 85%)', 'hsl(0 0% 25%)')};
      }

      .button.secondary:hover:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 96%)', 'hsl(0 0% 15%)')};
      }

      .button.secondary:active:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 92%)', 'hsl(0 0% 12%)')};
      }
      
      /* Destructive variant */
      .button.destructive {
        background: ${bdTheme('hsl(0 100% 95%)', 'hsl(0 50% 20%)')};
        color: ${bdTheme('hsl(0 100% 45%)', 'hsl(0 100% 75%)')};
      }

      .button.destructive:hover:not(.disabled) {
        background: ${bdTheme('hsl(0 100% 45%)', 'hsl(0 100% 50%)')};
        color: white;
      }

      .button.destructive:active:not(.disabled) {
        background: ${bdTheme('hsl(0 100% 40%)', 'hsl(0 100% 45%)')};
        color: white;
      }

      .button.outline {
        background: transparent;
        color: ${bdTheme('hsl(0 0% 40%)', 'hsl(0 0% 70%)')};
        box-shadow: inset 0 0 0 1.5px ${bdTheme('hsl(0 0% 90%)', 'hsl(0 0% 30%)')};
      }

      .button.outline:hover:not(.disabled) {
        color: ${bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 95%)')};
        box-shadow: inset 0 0 0 1.5px ${bdTheme('hsl(0 0% 70%)', 'hsl(0 0% 50%)')};
      }

      .button.outline:active:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 95%)', 'hsl(0 0% 15%)')};
      }

      .button.ghost {
        background: transparent;
        color: ${bdTheme('hsl(0 0% 40%)', 'hsl(0 0% 70%)')};
      }

      .button.ghost:hover:not(.disabled) {
        color: ${bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 95%)')};
        background: ${bdTheme('hsl(0 0% 0% / 0.05)', 'hsl(0 0% 100% / 0.05)')};
      }

      .button.ghost:active:not(.disabled) {
        background: ${bdTheme('hsl(0 0% 0% / 0.1)', 'hsl(0 0% 100% / 0.1)')};
      }

      /* Status states */
      .button.pending {
        pointer-events: none;
        opacity: 0.7;
      }

      .spinner {
        position: absolute;
        left: ${unsafeCSS(spacing["3"])};
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
      }

      .button.success {
        background: ${bdTheme('success')};
        color: ${bdTheme('successForeground')};
        pointer-events: none;
      }

      .button.error {
        background: ${bdTheme('destructive')};
        color: ${bdTheme('destructiveForeground')};
        pointer-events: none;
      }

      /* Disabled state */
      .button.disabled {
        opacity: 0.5;
        cursor: not-allowed;
        transform: none !important;
      }

      /* Focus state */
      .button:focus-visible {
        outline: 2px solid ${bdTheme('hsl(0 0% 15% / 0.2)', 'hsl(0 0% 95% / 0.2)')};
        outline-offset: 2px;
      }
      
      /* Icon sizing within buttons */
      .button sio-icon {
        width: 16px;
        height: 16px;
        flex-shrink: 0;
      }
      
      .button.size-sm sio-icon {
        width: 14px;
        height: 14px;
      }
      
      .button.size-lg sio-icon {
        width: 18px;
        height: 18px;
      }
    `,
  ];

  public render(): TemplateResult {
    const buttonClasses = [
      'button',
      this.type === 'primary' ? 'primary' : this.type,
      `size-${this.size}`,
      this.disabled ? 'disabled' : '',
      this.status,
    ].filter(Boolean).join(' ');

    return html`
      <button
        class="${buttonClasses}"
        ?disabled=${this.disabled}
        @click=${this.handleClick}
      >
        ${this.status === 'pending' ? html`
          <sio-icon class="spinner" icon="loader" size="16"></sio-icon>
        ` : ''}
        ${this.status === 'success' ? html`
          <sio-icon icon="check" size="16"></sio-icon>
        ` : ''}
        ${this.status === 'error' ? html`
          <sio-icon icon="x" size="16"></sio-icon>
        ` : ''}
        <slot>${this.text}</slot>
      </button>
    `;
  }

  private handleClick(event: MouseEvent) {
    if (this.disabled || this.status !== 'normal') {
      event.preventDefault();
      event.stopPropagation();
      return;
    }


    // Let the native click bubble normally
    // Don't dispatch a custom event to avoid double-triggering
  }
}