import { LitElement, css, html } from 'lit';
import { customElement, property, state } from 'lit/decorators.js';
import { classMap } from 'lit/directives/class-map.js';

@customElement('arx-dialog')
export class EveDialog extends LitElement {
  @property({ type: String }) override title = '';
  @property({ type: Boolean }) open = false;
  @property({ type: Boolean }) closeOnOverlayClick = true;
  @property({ type: Boolean }) closeOnEscape = true;
  @property({ type: String }) width = '420px';
  @property({ type: String }) maxWidth = '90%';

  @state() private _previousFocus: HTMLElement | null = null;

  static override styles = css`
    :host {
      display: block;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 999999;
    }

    .overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: oklch(from var(--color-base-content) l c h / 0.6);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 9999;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s ease;
      backdrop-filter: blur(4px);
    }

    .overlay.active {
      opacity: 1;
      pointer-events: all;
    }

    .dialog-container {
      background-color: var(--color-base-100);
      border-radius: var(--radius-box);
      border: var(--border) solid var(--color-base-300);
      box-shadow: calc(var(--depth) * 4px) calc(var(--depth) * 4px)
          calc(var(--depth) * 8px)
          oklch(from var(--color-base-content) l c h / 0.2),
        calc(var(--depth) * -1px) calc(var(--depth) * -1px)
          calc(var(--depth) * 4px) oklch(from var(--color-base-100) l c h / 0.4);
      width: var(--dialog-width, 420px);
      max-width: var(--dialog-max-width, 90%);
      padding: 28px;
      transform: scale(0.95) translateY(10px);
      transition: transform 0.25s cubic-bezier(0.1, 1, 0.2, 1);
      color: var(--color-base-content);
    }

    .overlay.active .dialog-container {
      transform: scale(1) translateY(0);
    }

    .dialog-header {
      font-size: 18px;
      font-weight: 600;
      margin: 0 0 16px 0;
      line-height: 1.4;
      color: var(--color-base-content);
    }

    .dialog-content {
      margin-bottom: 24px;
    }

    .dialog-footer {
      display: flex;
      justify-content: flex-end;
      gap: 12px;
    }

    .dialog-container:focus-within {
      box-shadow: calc(var(--depth) * 4px) calc(var(--depth) * 4px)
          calc(var(--depth) * 8px)
          oklch(from var(--color-base-content) l c h / 0.2),
        calc(var(--depth) * -1px) calc(var(--depth) * -1px)
          calc(var(--depth) * 4px) oklch(from var(--color-base-100) l c h / 0.4),
        0 0 0 2px oklch(from var(--color-accent) l c h / 0.2);
    }
  `;

  constructor() {
    super();
    this._handleKeyDown = this._handleKeyDown.bind(this);
  }

  override connectedCallback() {
    super.connectedCallback();
    document.addEventListener('keydown', this._handleKeyDown);
  }

  override disconnectedCallback() {
    super.disconnectedCallback();
    document.removeEventListener('keydown', this._handleKeyDown);
  }

  override updated(changedProps: Map<string, unknown>) {
    if (changedProps.has('open') && this.open) {
      this._previousFocus = document.activeElement as HTMLElement;
      // Focus the dialog container after rendering
      setTimeout(() => {
        const container = this.shadowRoot?.querySelector('.dialog-container') as HTMLElement;
        if (container) container.focus();
      }, 50);
    } else if (changedProps.has('open') && !this.open && this._previousFocus) {
      this._previousFocus.focus();
    }
  }

  private _handleKeyDown(e: KeyboardEvent) {
    if (!this.open || !this.closeOnEscape) return;
    if (e.key === 'Escape') this.close();
  }

  private _handleOverlayClick(e: MouseEvent) {
    if (this.closeOnOverlayClick && e.target === e.currentTarget) {
      this.close();
    }
  }

  show() {
    this.open = true;
  }

  close() {
    this.open = false;
    this.dispatchEvent(new CustomEvent('close'));
  }

  override render() {
    return html`
      <div
        class="${classMap({ overlay: true, active: this.open })}"
        @click=${this._handleOverlayClick}
        style="--dialog-width: ${this.width}; --dialog-max-width: ${this.maxWidth};"
      >
        <div class="dialog-container" tabindex="-1">
          ${this.title ? html`<div class="dialog-header">${this.title}</div>` : ''}
          <div class="dialog-content">
            <slot></slot>
          </div>
          <div class="dialog-footer">
            <slot name="footer"></slot>
          </div>
        </div>
      </div>
    `;
  }
}