/**
 * EcoOS Displays View
 * Card-based display management
 */

import {
  html,
  DeesElement,
  customElement,
  property,
  state,
  css,
  type TemplateResult,
} from '@design.estate/dees-element';
import { DeesButton, DeesPanel, DeesBadge } from '@design.estate/dees-catalog';

import { sharedStyles } from '../styles/shared.js';
import type { IDisplayInfo } from '../../ts_interfaces/display.js';

@customElement('ecoos-displays')
export class EcoosDisplays extends DeesElement {
  @property({ type: Array })
  public accessor displays: IDisplayInfo[] = [];

  @state()
  private accessor loading: boolean = false;

  @state()
  private accessor message: string = '';

  @state()
  private accessor messageError: boolean = false;

  public static styles = [
    sharedStyles,
    css`
      :host {
        display: block;
        padding: 16px;
      }

      .display-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 16px;
      }

      .display-card {
        opacity: 1;
        transition: opacity 0.2s ease;
      }

      .display-card.disabled {
        opacity: 0.5;
      }

      .display-meta {
        font-size: var(--text-xs);
        color: var(--text-tertiary);
        margin-bottom: 12px;
      }

      .badge-row {
        margin-bottom: 12px;
      }

      .actions-row {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
      }

      .message-bar {
        margin-top: 16px;
        padding: 8px 12px;
        border-radius: 6px;
        font-size: var(--text-sm);
      }

      .message-bar.success {
        background: hsla(142.1, 76.2%, 36.3%, 0.15);
        color: var(--success);
      }

      .message-bar.error {
        background: hsla(0, 84.2%, 60.2%, 0.15);
        color: var(--error);
      }

      .empty-state {
        text-align: center;
        padding: 32px;
        color: var(--text-tertiary);
      }

      .disabled-section {
        margin-top: 16px;
      }

      .disabled-header {
        font-size: var(--text-sm);
        color: var(--text-tertiary);
        margin-bottom: 12px;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 6px;
      }

      .disabled-header::before {
        content: '▶';
        font-size: 8px;
        transition: transform 150ms ease;
      }

      .disabled-header.open::before {
        transform: rotate(90deg);
      }
    `,
  ];

  render(): TemplateResult {
    const enabledDisplays = this.displays.filter(d => d.active);
    const disabledDisplays = this.displays.filter(d => !d.active);

    if (this.displays.length === 0) {
      return html`
        <div class="empty-state">
          No displays detected
        </div>
      `;
    }

    return html`
      <div class="display-grid">
        ${enabledDisplays.map(d => this.renderDisplayCard(d))}
      </div>

      ${disabledDisplays.length > 0 ? html`
        <details class="disabled-section">
          <summary class="disabled-header">
            Disabled Displays (${disabledDisplays.length})
          </summary>
          <div class="display-grid" style="margin-top: 12px;">
            ${disabledDisplays.map(d => this.renderDisplayCard(d))}
          </div>
        </details>
      ` : ''}

      ${this.message ? html`
        <div class="message-bar ${this.messageError ? 'error' : 'success'}">${this.message}</div>
      ` : ''}
    `;
  }

  private renderDisplayCard(display: IDisplayInfo): TemplateResult {
    return html`
      <dees-panel
        class="display-card ${display.active ? '' : 'disabled'}"
        .title=${display.name}
        .subtitle=${`${display.width}×${display.height} @ ${display.refreshRate}Hz`}
        .variant=${display.active ? 'default' : 'ghost'}
      >
        ${display.make && display.make !== 'Unknown' ? html`
          <div class="display-meta">${display.make}${display.model ? ` ${display.model}` : ''}</div>
        ` : ''}

        ${display.isPrimary ? html`
          <div class="badge-row">
            <dees-badge .type=${'primary'}>Primary</dees-badge>
          </div>
        ` : ''}

        <div class="actions-row">
          ${display.active && !display.isPrimary ? html`
            <dees-button
              .type=${'default'}
              .text=${'Set Primary'}
              .disabled=${this.loading}
              @click=${() => this.setPrimary(display.name)}
            ></dees-button>
          ` : ''}
          <dees-button
            .type=${'default'}
            .status=${display.active ? 'error' : 'success'}
            .text=${display.active ? 'Disable' : 'Enable'}
            .disabled=${this.loading}
            @click=${() => this.toggleDisplay(display.name, !display.active)}
          ></dees-button>
        </div>
      </dees-panel>
    `;
  }

  private async toggleDisplay(name: string, enable: boolean): Promise<void> {
    this.loading = true;
    this.message = '';
    try {
      const action = enable ? 'enable' : 'disable';
      const response = await fetch(`/api/displays/${encodeURIComponent(name)}/${action}`, {
        method: 'POST',
      });
      const result = await response.json();
      this.message = result.message;
      this.messageError = !result.success;
      this.dispatchEvent(new CustomEvent('refresh-displays'));
    } catch (error) {
      this.message = `Error: ${error}`;
      this.messageError = true;
    } finally {
      this.loading = false;
    }
  }

  private async setPrimary(name: string): Promise<void> {
    this.loading = true;
    this.message = '';
    try {
      const response = await fetch(`/api/displays/${encodeURIComponent(name)}/primary`, {
        method: 'POST',
      });
      const result = await response.json();
      this.message = result.message;
      this.messageError = !result.success;
      this.dispatchEvent(new CustomEvent('refresh-displays'));
    } catch (error) {
      this.message = `Error: ${error}`;
      this.messageError = true;
    } finally {
      this.loading = false;
    }
  }
}