import {
  DeesElement,
  property,
  html,
  customElement,
  type TemplateResult,
  css,
  cssManager,
  unsafeCSS,
} from '@design.estate/dees-element';
import * as domtools from '@design.estate/dees-domtools';
import * as sharedStyles from '../styles/shared.styles.js';

import './internal/uplinternal-miniheading.js';
import { demoFunc } from './upl-statuspage-statsgrid.demo.js';

declare global {
  interface HTMLElementTagNameMap {
    'upl-statuspage-statsgrid': UplStatuspageStatsgrid;
  }
}

@customElement('upl-statuspage-statsgrid')
export class UplStatuspageStatsgrid extends DeesElement {
  public static demo = demoFunc;

  @property({ type: Number })
  accessor uptime: number = 99.99;

  @property({ type: Number })
  accessor avgResponseTime: number = 125;

  @property({ type: Number })
  accessor totalIncidents: number = 0;

  @property({ type: Number })
  accessor affectedServices: number = 0;

  @property({ type: Number })
  accessor totalServices: number = 0;

  @property({ type: String })
  accessor currentStatus: string = 'operational';

  @property({ type: Boolean })
  accessor loading: boolean = false;

  @property({ type: String })
  accessor timePeriod: string = '90 days';

  constructor() {
    super();
  }

  public static styles = [
    domtools.elementBasic.staticStyles,
    sharedStyles.commonStyles,
    css`
      :host {
        display: block;
        background: transparent;
        font-family: ${unsafeCSS(sharedStyles.fonts.base)};
        color: ${sharedStyles.colors.text.primary};
      }

      .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 ${unsafeCSS(sharedStyles.spacing.lg)} ${unsafeCSS(sharedStyles.spacing.lg)} ${unsafeCSS(sharedStyles.spacing.lg)};
      }

      .stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: ${unsafeCSS(sharedStyles.spacing.md)};
      }

      .stat-card {
        background: ${sharedStyles.colors.background.card};
        border: 1px solid ${sharedStyles.colors.border.default};
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.lg)};
        padding: ${unsafeCSS(sharedStyles.spacing.lg)};
        transition: all ${unsafeCSS(sharedStyles.durations.normal)} ${unsafeCSS(sharedStyles.easings.default)};
        position: relative;
        overflow: hidden;
        animation: fadeInUp 0.4s ${unsafeCSS(sharedStyles.easings.default)} both;
      }

      .stat-card:nth-child(1) { animation-delay: 0ms; }
      .stat-card:nth-child(2) { animation-delay: 50ms; }
      .stat-card:nth-child(3) { animation-delay: 100ms; }
      .stat-card:nth-child(4) { animation-delay: 150ms; }

      @keyframes fadeInUp {
        from {
          opacity: 0;
          transform: translateY(12px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      /* Status-colored top accent */
      .stat-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: ${sharedStyles.colors.border.muted};
        transition: all ${unsafeCSS(sharedStyles.durations.fast)} ${unsafeCSS(sharedStyles.easings.default)};
      }

      /* Dynamic status-based accent colors for all stat cards */
      .stat-card.operational::before {
        background: ${sharedStyles.colors.status.operational};
      }

      .stat-card.degraded::before {
        background: ${sharedStyles.colors.status.degraded};
      }

      .stat-card.partial_outage::before {
        background: ${sharedStyles.colors.status.partial};
      }

      .stat-card.major_outage::before {
        background: ${sharedStyles.colors.status.major};
      }

      .stat-card.maintenance::before {
        background: ${sharedStyles.colors.status.maintenance};
      }

      .stat-card:hover {
        border-color: ${sharedStyles.colors.border.muted};
        box-shadow: ${unsafeCSS(sharedStyles.shadows.md)};
        transform: translateY(-3px);
      }

      .stat-card:hover::before {
        height: 4px;
      }

      .stat-label {
        font-size: 11px;
        color: ${sharedStyles.colors.text.muted};
        text-transform: uppercase;
        letter-spacing: 0.06em;
        font-weight: 600;
        margin-bottom: ${unsafeCSS(sharedStyles.spacing.sm)};
        display: flex;
        align-items: center;
        gap: 6px;
      }

      .stat-label svg {
        width: 14px;
        height: 14px;
        opacity: 0.7;
      }

      .stat-value {
        font-size: 28px;
        font-weight: 700;
        color: ${sharedStyles.colors.text.primary};
        font-variant-numeric: tabular-nums;
        line-height: 1.2;
        letter-spacing: -0.02em;
        transition: transform ${unsafeCSS(sharedStyles.durations.fast)} ${unsafeCSS(sharedStyles.easings.default)};
      }

      .stat-card:hover .stat-value {
        transform: scale(1.02);
      }

      .stat-unit {
        font-size: 16px;
        font-weight: 500;
        color: ${sharedStyles.colors.text.secondary};
        margin-left: 2px;
      }

      .stat-change {
        font-size: 12px;
        margin-top: ${unsafeCSS(sharedStyles.spacing.sm)};
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 4px 8px;
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.sm)};
        width: fit-content;
      }

      .stat-change.positive {
        color: ${sharedStyles.colors.status.operational};
        background: ${cssManager.bdTheme('rgba(22, 163, 74, 0.08)', 'rgba(34, 197, 94, 0.12)')};
      }

      .stat-change.negative {
        color: ${sharedStyles.colors.status.partial};
        background: ${cssManager.bdTheme('rgba(239, 68, 68, 0.08)', 'rgba(248, 113, 113, 0.12)')};
      }

      .stat-change.neutral {
        color: ${sharedStyles.colors.text.muted};
        background: ${sharedStyles.colors.background.muted};
      }

      /* Status text color variations */
      .stat-value.operational {
        color: ${sharedStyles.colors.status.operational};
      }

      .stat-value.degraded {
        color: ${sharedStyles.colors.status.degraded};
      }

      .stat-value.partial_outage {
        color: ${sharedStyles.colors.status.partial};
      }

      .stat-value.major_outage {
        color: ${sharedStyles.colors.status.major};
      }

      .stat-value.maintenance {
        color: ${sharedStyles.colors.status.maintenance};
      }

      .loading-skeleton {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: ${unsafeCSS(sharedStyles.spacing.md)};
      }

      .skeleton-card {
        background: ${sharedStyles.colors.background.card};
        border: 1px solid ${sharedStyles.colors.border.default};
        border-radius: ${unsafeCSS(sharedStyles.borderRadius.lg)};
        padding: ${unsafeCSS(sharedStyles.spacing.lg)};
        height: 110px;
        position: relative;
        overflow: hidden;
      }

      .skeleton-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: ${sharedStyles.colors.background.muted};
      }

      .skeleton-label {
        height: 12px;
        width: 80px;
        background: ${sharedStyles.colors.background.muted};
        border-radius: 4px;
        margin-bottom: ${unsafeCSS(sharedStyles.spacing.sm)};
        animation: shimmer 1.5s infinite;
      }

      .skeleton-value {
        height: 32px;
        width: 100px;
        background: ${sharedStyles.colors.background.muted};
        border-radius: 6px;
        animation: shimmer 1.5s infinite;
        animation-delay: 0.1s;
      }

      .skeleton-change {
        height: 20px;
        width: 70px;
        background: ${sharedStyles.colors.background.muted};
        border-radius: 4px;
        margin-top: ${unsafeCSS(sharedStyles.spacing.sm)};
        animation: shimmer 1.5s infinite;
        animation-delay: 0.2s;
      }

      @keyframes shimmer {
        0% { opacity: 0.5; }
        50% { opacity: 1; }
        100% { opacity: 0.5; }
      }

      .status-indicator {
        display: inline-block;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        flex-shrink: 0;
      }

      .status-indicator.operational {
        background: ${sharedStyles.colors.status.operational};
        box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(22, 163, 74, 0.2)', 'rgba(34, 197, 94, 0.25)')};
        animation: statusPulse 2s ease-in-out infinite;
      }

      @keyframes statusPulse {
        0%, 100% { box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(22, 163, 74, 0.2)', 'rgba(34, 197, 94, 0.25)')}; }
        50% { box-shadow: 0 0 0 4px ${cssManager.bdTheme('rgba(22, 163, 74, 0.1)', 'rgba(34, 197, 94, 0.15)')}; }
      }

      .status-indicator.degraded {
        background: ${sharedStyles.colors.status.degraded};
        box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(217, 119, 6, 0.2)', 'rgba(251, 191, 36, 0.25)')};
      }

      .status-indicator.partial_outage {
        background: ${sharedStyles.colors.status.partial};
        box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(239, 68, 68, 0.2)', 'rgba(248, 113, 113, 0.25)')};
      }

      .status-indicator.major_outage {
        background: ${sharedStyles.colors.status.major};
        box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(185, 28, 28, 0.2)', 'rgba(239, 68, 68, 0.25)')};
        animation: majorPulse 1s ease-in-out infinite;
      }

      @keyframes majorPulse {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.6; }
      }

      .status-indicator.maintenance {
        background: ${sharedStyles.colors.status.maintenance};
        box-shadow: 0 0 0 2px ${cssManager.bdTheme('rgba(37, 99, 235, 0.2)', 'rgba(96, 165, 250, 0.25)')};
      }

      @media (max-width: 640px) {
        .container {
          padding: 0 ${unsafeCSS(sharedStyles.spacing.md)} ${unsafeCSS(sharedStyles.spacing.md)} ${unsafeCSS(sharedStyles.spacing.md)};
        }

        .stats-grid {
          grid-template-columns: repeat(2, 1fr);
          gap: ${unsafeCSS(sharedStyles.spacing.sm)};
        }

        .stat-card {
          padding: ${unsafeCSS(sharedStyles.spacing.md)};
        }

        .stat-value {
          font-size: 22px;
        }

        .stat-label {
          font-size: 10px;
        }

        .stat-label svg {
          width: 12px;
          height: 12px;
        }
      }
    `,
  ];

  public render(): TemplateResult {
    return html`
      <div class="container">
        ${this.loading ? html`
          <div class="loading-skeleton">
            ${Array(4).fill(0).map(() => html`
              <div class="skeleton-card">
                <div class="skeleton-label"></div>
                <div class="skeleton-value"></div>
              </div>
            `)}
          </div>
        ` : html`
          <div class="stats-grid">
            <div class="stat-card ${this.currentStatus}">
              <div class="stat-label">
                <span class="status-indicator ${this.currentStatus}"></span>
                Current Status
              </div>
              <div class="stat-value ${this.currentStatus}">
                ${this.formatStatus(this.currentStatus)}
              </div>
            </div>

            <div class="stat-card ${this.getUptimeCardStatus()}">
              <div class="stat-label">
                <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                  <polyline points="22 12 18 12 15 21 9 3 6 12 2 12"></polyline>
                </svg>
                Uptime
              </div>
              <div class="stat-value">
                ${this.uptime.toFixed(2)}<span class="stat-unit">%</span>
              </div>
              <div class="stat-change neutral">
                Last ${this.timePeriod}
              </div>
            </div>

            <div class="stat-card ${this.getResponseCardStatus()}">
              <div class="stat-label">
                <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                  <circle cx="12" cy="12" r="10"></circle>
                  <polyline points="12 6 12 12 16 14"></polyline>
                </svg>
                Avg Response
              </div>
              <div class="stat-value">
                ${this.avgResponseTime}<span class="stat-unit">ms</span>
              </div>
              ${this.renderResponseChange()}
            </div>

            <div class="stat-card ${this.getIncidentCardStatus()}">
              <div class="stat-label">
                <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                  <path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path>
                  <line x1="12" y1="9" x2="12" y2="13"></line>
                  <line x1="12" y1="17" x2="12.01" y2="17"></line>
                </svg>
                Incidents
              </div>
              <div class="stat-value">
                ${this.totalIncidents}
              </div>
              <div class="stat-change ${this.affectedServices === 0 ? 'positive' : 'negative'}">
                ${this.affectedServices === 0 ? 'All services ok.' : `${this.affectedServices} of ${this.totalServices} services affected`}
              </div>
            </div>
          </div>
        `}
      </div>
    `;
  }

  private formatStatus(status: string): string {
    const statusMap: Record<string, string> = {
      operational: 'Operational',
      degraded: 'Degraded',
      partial_outage: 'Partial Outage',
      major_outage: 'Major Outage',
      maintenance: 'Maintenance',
    };
    return statusMap[status] || 'Unknown';
  }

  private renderResponseChange(): TemplateResult {
    // This could be enhanced with actual trend data
    const trend = this.avgResponseTime < 200 ? 'positive' : this.avgResponseTime > 500 ? 'negative' : 'neutral';
    const icon = trend === 'positive' ? '↓' : trend === 'negative' ? '↑' : '→';

    return html`
      <div class="stat-change ${trend}">
        <span>${icon}</span>
        <span>${trend === 'positive' ? 'Fast' : trend === 'negative' ? 'Slow' : 'Normal'}</span>
      </div>
    `;
  }

  private getUptimeCardStatus(): string {
    if (this.uptime >= 99.9) return 'operational';
    if (this.uptime >= 99.0) return 'degraded';
    return 'partial_outage';
  }

  private getResponseCardStatus(): string {
    if (this.avgResponseTime < 200) return 'operational';
    if (this.avgResponseTime < 500) return 'degraded';
    return 'partial_outage';
  }

  private getIncidentCardStatus(): string {
    if (this.affectedServices === 0) return 'operational';
    if (this.currentStatus === 'major_outage') return 'major_outage';
    if (this.currentStatus === 'partial_outage') return 'partial_outage';
    return 'degraded';
  }
}