import { DeesElement, customElement, html, css, cssManager, property } from '@design.estate/dees-element';
import { formatCronFriendly, formatDuration, formatRelativeTime, getCategoryHue, getCategoryIcon } from '../utils.js';

@customElement('cloudly-task-panel')
export class CloudlyTaskPanel extends DeesElement {
  @property({ type: Object }) task: any;
  @property({ type: Array }) executions: any[] = [];
  @property({ type: Object }) canceling: Record<string, boolean> = {};

  // Callbacks provided by parent view
  @property({ attribute: false }) onRun?: (taskName: string) => void;
  @property({ attribute: false }) onCancel?: (taskName: string) => void;
  @property({ attribute: false }) onOpenDetails?: (execution: any) => void;
  @property({ attribute: false }) onOpenLogs?: (execution: any) => void;

  public static styles = [
    cssManager.defaultStyles,
    css`
      .task-panel {
        background: #131313;
        border: 1px solid #2a2a2a;
        border-radius: 10px;
        padding: 16px;
        transition: border-color 0.2s, background 0.2s;
      }
      .task-panel:hover { border-color: #3a3a3a; }

      .panel-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        margin-bottom: 12px;
      }
      .header-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
      .header-right { display: flex; align-items: center; gap: 8px; }
      .task-icon { color: #cfcfcf; font-size: 28px; }
      .task-name { font-size: 1.05em; font-weight: 650; color: #fff; letter-spacing: 0.1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
      .task-subtitle { color: #8c8c8c; font-size: 0.9em; }

      .task-description {
        color: #b5b5b5;
        font-size: 0.95em;
        margin-bottom: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
      }

      .metrics-grid {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px;
        margin-top: 8px;
        width: 100%;
        max-width: 760px;
      }
      .metric-item {
        background: #0f0f0f;
        border: 1px solid #2c2c2c;
        border-radius: 8px;
        padding: 10px 12px;
      }
      .metric-item .label { color: #8d8d8d; font-size: 0.8em; }
      .metric-item .value { color: #eaeaea; font-weight: 600; margin-top: 4px; }

      .lastline {
        display: flex;
        align-items: center;
        gap: 8px;
        color: #a0a0a0;
        font-size: 0.9em;
        margin-top: 10px;
      }
      .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
      .dot.info { background: #2196f3; }
      .dot.success { background: #4caf50; }
      .dot.warning { background: #ff9800; }
      .dot.error { background: #f44336; }

      .panel-footer { display: flex; gap: 12px; margin-top: 12px; }

      .link-button { background: transparent; border: none; color: #8ab4ff; cursor: pointer; padding: 0; font-size: 0.95em; }
      .link-button:hover { text-decoration: underline; }

      .status-badge {
        padding: 2px 8px;
        border-radius: 4px;
        font-size: 0.85em;
        font-weight: 500;
      }
      .status-running { background: #2196f3; color: white; }
      .status-completed { background: #4caf50; color: white; }
      .status-failed { background: #f44336; color: white; }
      .status-cancelled { background: #ff9800; color: white; }
    `,
  ];

  private computeData() {
    const task = this.task || {};
    const executions = this.executions || [];
    const lastExecution = executions
      .filter((e: any) => e.data.taskName === task.name)
      .sort((a: any, b: any) => (b.data.startedAt || 0) - (a.data.startedAt || 0))[0];
    const isRunning = lastExecution?.data.status === 'running';
    const executionsForTask = executions.filter((e: any) => e.data.taskName === task.name);
    const now = Date.now();
    const last24hCount = executionsForTask.filter((e: any) => (e.data.startedAt || 0) > now - 86_400_000).length;
    const completed = executionsForTask.filter((e: any) => e.data.status === 'completed');
    const successRate = executionsForTask.length ? Math.round((completed.length * 100) / executionsForTask.length) : 0;
    const avgDuration = completed.length ? Math.round(completed.reduce((acc: number, e: any) => acc + (e.data.duration || 0), 0) / completed.length) : undefined;
    const lastLog = lastExecution?.data.logs && lastExecution.data.logs.length > 0 ? lastExecution.data.logs[lastExecution.data.logs.length - 1] : null;
    const subtitle = [
      task.category,
      task.schedule ? `⏱ ${formatCronFriendly(task.schedule)}` : null,
      isRunning
        ? (lastExecution?.data.startedAt ? `Started ${formatRelativeTime(lastExecution.data.startedAt)}` : 'Running')
        : (task.lastRun ? `Last ${formatRelativeTime(task.lastRun)}` : 'Never run')
    ].filter(Boolean).join(' • ');
    return { lastExecution, isRunning, last24hCount, successRate, avgDuration, lastLog, subtitle };
  }

  public render() {
    const task = this.task;
    const { lastExecution, isRunning, last24hCount, successRate, avgDuration, lastLog, subtitle } = this.computeData();

    return html`
      <div class="task-panel">
        <div class="panel-header">
          <div class="header-left">
            <dees-icon class="task-icon" .icon=${getCategoryIcon(task.category)}></dees-icon>
            <div>
              <div class="task-name" title=${task.name}>${task.name}</div>
              <div class="task-subtitle" title=${task.schedule || ''}>${subtitle}</div>
            </div>
          </div>
          <div class="header-right">
            ${lastExecution ? html`<span class="status-badge status-${lastExecution.data.status}">${lastExecution.data.status}</span>` : html`<span class="status-badge" style="background:#2e2e2e;color:#ddd;border:1px solid #3a3a3a;">idle</span>`}
            ${isRunning ? html`
              <dees-spinner style="--size: 18px"></dees-spinner>
              <dees-button
                .text=${this.canceling[lastExecution!.id] ? 'Cancelling…' : 'Cancel'}
                .type=${'secondary'}
                .disabled=${!!this.canceling[lastExecution!.id]}
                @click=${() => this.onCancel?.(task.name)}
              ></dees-button>
            ` : html`
              <dees-button .text=${'Run'} .type=${'primary'} .disabled=${!task.enabled} @click=${() => this.onRun?.(task.name)}></dees-button>
            `}
          </div>
        </div>

        <div class="task-description" title=${task.description || ''}>${task.description}</div>

        ${lastExecution ? html`
          <div class="metrics-grid">
            <div class="metric-item">
              <div class="label">Last Status</div>
              <div class="value">
                <span class="status-badge status-${lastExecution.data.status}">${lastExecution.data.status}</span>
              </div>
            </div>
            <div class="metric-item">
              <div class="label">Avg Duration</div>
              <div class="value">${avgDuration ? formatDuration(avgDuration) : '-'}</div>
            </div>
            <div class="metric-item">
              <div class="label">24h Runs · Success</div>
              <div class="value">${last24hCount} · ${successRate}%</div>
            </div>
          </div>
          <div class="lastline">
            ${lastLog ? html`<span class="dot ${lastLog.severity}"></span> ${lastLog.message}` : 'No recent logs'}
          </div>
          <div class="panel-footer">
            <button class="link-button" @click=${() => this.onOpenDetails?.(lastExecution)}>Details</button>
            ${lastExecution.data.logs?.length ? html`<button class="link-button" @click=${() => this.onOpenLogs?.(lastExecution)}>Logs</button>` : ''}
          </div>
        ` : html`
          <div class="metrics-grid">
            <div class="metric-item">
              <div class="label">Last Status</div>
              <div class="value">—</div>
            </div>
            <div class="metric-item">
              <div class="label">Avg Duration</div>
              <div class="value">—</div>
            </div>
            <div class="metric-item">
              <div class="label">24h Runs · Success</div>
              <div class="value">0 · 0%</div>
            </div>
          </div>
        `}
      </div>
    `;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'cloudly-task-panel': CloudlyTaskPanel;
  }
}