import * as shared from '../elements/shared/index.js';
import * as plugins from '../plugins.js';

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

import * as appstate from '../appstate.js';

@customElement('cloudly-view-tasks')
export class CloudlyViewTasks extends DeesElement {
  @state()
  private data: appstate.IDataState = {};

  @state()
  private selectedExecution: plugins.interfaces.data.ITaskExecution | null = null;

  @state()
  private loading = false;

  @state()
  private filterStatus: string = 'all';

  constructor() {
    super();
    const subscription = appstate.dataState
      .select((stateArg) => stateArg)
      .subscribe((dataArg) => {
        this.data = dataArg;
      });
    this.rxSubscriptions.push(subscription);
    
    // Load initial data (non-blocking)
    this.loadInitialData();
  }

  private async loadInitialData() {
    try {
      await appstate.dataState.dispatchAction(appstate.taskActions.getTasks, {});
      await appstate.dataState.dispatchAction(appstate.taskActions.getTaskExecutions, {});
    } catch (error) {
      console.error('Failed to load initial task data:', error);
    }
  }

  public static styles = [
    cssManager.defaultStyles,
    shared.viewHostCss,
    css`
      .task-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 16px;
        margin-bottom: 32px;
      }

      .task-card {
        background: #1a1a1a;
        border: 1px solid #333;
        border-radius: 8px;
        padding: 16px;
        cursor: pointer;
        transition: all 0.2s;
      }

      .task-card:hover {
        background: #222;
        border-color: #555;
      }

      .task-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
      }

      .task-name {
        font-size: 1.1em;
        font-weight: 600;
        color: #fff;
      }

      .task-description {
        color: #999;
        font-size: 0.9em;
        margin-bottom: 12px;
      }

      .task-meta {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
      }

      .category-badge, .status-badge {
        padding: 2px 8px;
        border-radius: 4px;
        font-size: 0.85em;
        font-weight: 500;
      }

      .category-maintenance {
        background: #ff9800;
        color: white;
      }

      .category-deployment {
        background: #2196f3;
        color: white;
      }

      .category-backup {
        background: #4caf50;
        color: white;
      }

      .category-monitoring {
        background: #9c27b0;
        color: white;
      }

      .category-cleanup {
        background: #795548;
        color: white;
      }

      .category-system {
        background: #607d8b;
        color: white;
      }

      .category-security {
        background: #f44336;
        color: white;
      }

      .status-running {
        background: #2196f3;
        color: white;
      }

      .status-completed {
        background: #4caf50;
        color: white;
      }

      .status-failed {
        background: #f44336;
        color: white;
      }

      .status-cancelled {
        background: #ff9800;
        color: white;
      }

      .trigger-button {
        padding: 6px 12px;
        background: #2196f3;
        color: white;
        border: none;
        border-radius: 4px;
        cursor: pointer;
        font-size: 0.9em;
        transition: background 0.2s;
      }

      .trigger-button:hover {
        background: #1976d2;
      }

      .trigger-button:disabled {
        background: #666;
        cursor: not-allowed;
      }

      .schedule-info {
        color: #666;
        font-size: 0.85em;
        margin-top: 8px;
      }

      .last-run {
        color: #888;
        font-size: 0.85em;
        margin-top: 4px;
      }

      .execution-logs {
        background: #0a0a0a;
        border: 1px solid #333;
        border-radius: 4px;
        padding: 16px;
        margin-top: 16px;
        max-height: 400px;
        overflow-y: auto;
      }

      .log-entry {
        font-family: monospace;
        font-size: 0.9em;
        margin-bottom: 8px;
        padding: 4px 8px;
        border-radius: 4px;
      }

      .log-info {
        color: #2196f3;
      }

      .log-warning {
        color: #ff9800;
        background: rgba(255, 152, 0, 0.1);
      }

      .log-error {
        color: #f44336;
        background: rgba(244, 67, 54, 0.1);
      }

      .log-success {
        color: #4caf50;
        background: rgba(76, 175, 80, 0.1);
      }

      .filter-bar {
        display: flex;
        gap: 8px;
        margin-bottom: 16px;
      }

      .filter-button {
        padding: 6px 12px;
        background: #333;
        color: #ccc;
        border: 1px solid #555;
        border-radius: 4px;
        cursor: pointer;
        transition: all 0.2s;
      }

      .filter-button.active {
        background: #2196f3;
        color: white;
        border-color: #2196f3;
      }

      .filter-button:hover:not(.active) {
        background: #444;
      }

      .metrics {
        display: flex;
        gap: 16px;
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid #333;
      }

      .metric {
        display: flex;
        flex-direction: column;
      }

      .metric-label {
        color: #666;
        font-size: 0.85em;
      }

      .metric-value {
        color: #fff;
        font-size: 1.1em;
        font-weight: 600;
      }
    `,
  ];


  private async triggerTask(taskName: string) {
    try {
      await appstate.dataState.dispatchAction(
        appstate.taskActions.triggerTask, { taskName }
      );
      
      // Reload tasks and executions to show the new execution
      await appstate.dataState.dispatchAction(appstate.taskActions.getTasks, {});
      await this.loadExecutionsWithFilter();
    } catch (error) {
      console.error('Failed to trigger task:', error);
    }
  }

  private async loadExecutionsWithFilter() {
    try {
      const filter: any = {};
      if (this.filterStatus !== 'all') {
        filter.status = this.filterStatus;
      }
      
      await appstate.dataState.dispatchAction(
        appstate.taskActions.getTaskExecutions, { filter }
      );
    } catch (error) {
      console.error('Failed to load executions:', error);
    }
  }

  private formatDate(timestamp: number): string {
    return new Date(timestamp).toLocaleString();
  }

  private formatDuration(ms: number): string {
    if (ms < 1000) return `${ms}ms`;
    if (ms < 60000) return `${(ms / 1000).toFixed(1)}s`;
    if (ms < 3600000) return `${(ms / 60000).toFixed(1)}m`;
    return `${(ms / 3600000).toFixed(1)}h`;
  }

  private getCategoryIcon(category: string): string {
    switch (category) {
      case 'maintenance':
        return 'lucide:Wrench';
      case 'deployment':
        return 'lucide:Rocket';
      case 'backup':
        return 'lucide:Archive';
      case 'monitoring':
        return 'lucide:Activity';
      case 'cleanup':
        return 'lucide:Trash2';
      case 'system':
        return 'lucide:Settings';
      case 'security':
        return 'lucide:Shield';
      default:
        return 'lucide:Play';
    }
  }

  private renderTaskCard(task: any) {
    const executions = this.data.taskExecutions || [];
    const lastExecution = executions
      .filter(e => e.data.taskName === task.name)
      .sort((a, b) => (b.data.startedAt || 0) - (a.data.startedAt || 0))[0];
    
    const isRunning = lastExecution?.data.status === 'running';
    
    return html`
      <div class="task-card">
        <div class="task-header">
          <div class="task-name">
            <dees-icon .iconName=${this.getCategoryIcon(task.category)}></dees-icon>
            ${task.name}
          </div>
          <button
            class="trigger-button"
            ?disabled=${isRunning || !task.enabled}
            @click=${() => this.triggerTask(task.name)}
          >
            ${isRunning ? 'Running...' : 'Run'}
          </button>
        </div>
        
        <div class="task-description">${task.description}</div>
        
        <div class="task-meta">
          <span class="category-badge category-${task.category}">${task.category}</span>
          ${!task.enabled ? html`<span class="status-badge status-cancelled">Disabled</span>` : ''}
        </div>
        
        ${task.schedule ? html`
          <div class="schedule-info">
            <dees-icon .iconName=${'lucide:Clock'}></dees-icon>
            Schedule: ${task.schedule}
          </div>
        ` : ''}
        
        ${task.lastRun ? html`
          <div class="last-run">
            Last run: ${this.formatDate(task.lastRun)}
          </div>
        ` : ''}
        
        ${lastExecution ? html`
          <div class="metrics">
            <div class="metric">
              <span class="metric-label">Status</span>
              <span class="metric-value">
                <span class="status-badge status-${lastExecution.data.status}">
                  ${lastExecution.data.status}
                </span>
              </span>
            </div>
            ${lastExecution.data.duration ? html`
              <div class="metric">
                <span class="metric-label">Duration</span>
                <span class="metric-value">${this.formatDuration(lastExecution.data.duration)}</span>
              </div>
            ` : ''}
          </div>
        ` : ''}
      </div>
    `;
  }

  private renderExecutionDetails(execution: plugins.interfaces.data.ITaskExecution) {
    return html`
      <div class="execution-details">
        <h3>Execution Details: ${execution.data.taskName}</h3>
        
        <div class="metrics">
          <div class="metric">
            <span class="metric-label">Started</span>
            <span class="metric-value">${this.formatDate(execution.data.startedAt)}</span>
          </div>
          ${execution.data.completedAt ? html`
            <div class="metric">
              <span class="metric-label">Completed</span>
              <span class="metric-value">${this.formatDate(execution.data.completedAt)}</span>
            </div>
          ` : ''}
          ${execution.data.duration ? html`
            <div class="metric">
              <span class="metric-label">Duration</span>
              <span class="metric-value">${this.formatDuration(execution.data.duration)}</span>
            </div>
          ` : ''}
          <div class="metric">
            <span class="metric-label">Triggered By</span>
            <span class="metric-value">${execution.data.triggeredBy}</span>
          </div>
        </div>
        
        ${execution.data.logs && execution.data.logs.length > 0 ? html`
          <h4>Logs</h4>
          <div class="execution-logs">
            ${execution.data.logs.map(log => html`
              <div class="log-entry log-${log.severity}">
                <span>${this.formatDate(log.timestamp)}</span> - 
                ${log.message}
              </div>
            `)}
          </div>
        ` : ''}
        
        ${execution.data.metrics ? html`
          <h4>Metrics</h4>
          <div class="metrics">
            ${Object.entries(execution.data.metrics).map(([key, value]) => html`
              <div class="metric">
                <span class="metric-label">${key}</span>
                <span class="metric-value">${typeof value === 'object' ? JSON.stringify(value) : value}</span>
              </div>
            `)}
          </div>
        ` : ''}
        
        ${execution.data.error ? html`
          <h4>Error</h4>
          <div class="execution-logs">
            <div class="log-entry log-error">
              ${execution.data.error.message}
              ${execution.data.error.stack ? html`<pre>${execution.data.error.stack}</pre>` : ''}
            </div>
          </div>
        ` : ''}
      </div>
    `;
  }

  public render() {
    return html`
      <cloudly-sectionheading>Tasks</cloudly-sectionheading>
      
      <div class="filter-bar">
        <button
          class="filter-button ${this.filterStatus === 'all' ? 'active' : ''}"
          @click=${() => { this.filterStatus = 'all'; this.loadExecutionsWithFilter(); }}
        >
          All
        </button>
        <button
          class="filter-button ${this.filterStatus === 'running' ? 'active' : ''}"
          @click=${() => { this.filterStatus = 'running'; this.loadExecutionsWithFilter(); }}
        >
          Running
        </button>
        <button
          class="filter-button ${this.filterStatus === 'completed' ? 'active' : ''}"
          @click=${() => { this.filterStatus = 'completed'; this.loadExecutionsWithFilter(); }}
        >
          Completed
        </button>
        <button
          class="filter-button ${this.filterStatus === 'failed' ? 'active' : ''}"
          @click=${() => { this.filterStatus = 'failed'; this.loadExecutionsWithFilter(); }}
        >
          Failed
        </button>
      </div>
      
      <div class="task-grid">
        ${(this.data.tasks || []).map(task => this.renderTaskCard(task))}
      </div>
      
      <cloudly-sectionheading>Execution History</cloudly-sectionheading>
      
      <dees-table
        .heading1=${'Task Executions'}
        .heading2=${'History of task runs and their outcomes'}
        .data=${this.data.taskExecutions || []}
        .displayFunction=${(itemArg: plugins.interfaces.data.ITaskExecution) => {
          return {
            Task: itemArg.data.taskName,
            Status: html`<span class="status-badge status-${itemArg.data.status}">${itemArg.data.status}</span>`,
            'Started At': this.formatDate(itemArg.data.startedAt),
            Duration: itemArg.data.duration ? this.formatDuration(itemArg.data.duration) : '-',
            'Triggered By': itemArg.data.triggeredBy,
            Logs: itemArg.data.logs?.length || 0,
          };
        }}
        .actionFunction=${async (itemArg) => [
          {
            name: 'View Details',
            iconName: 'lucide:Eye',
            type: ['inRow'],
            actionFunc: async () => {
              this.selectedExecution = itemArg;
            },
          },
        ]}
      ></dees-table>
      
      ${this.selectedExecution ? html`
        <cloudly-sectionheading>Execution Details</cloudly-sectionheading>
        ${this.renderExecutionDetails(this.selectedExecution)}
      ` : ''}
    `;
  }
}