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

// View lifecycle interfaces (defined locally as they're not exported from dees-catalog)
interface IViewActivationContext {
  appui: DeesAppuiBase;
  viewId: string;
  params?: Record<string, string>;
}

interface IViewLifecycle {
  onActivate?: (context: IViewActivationContext) => void | Promise<void>;
  onDeactivate?: () => void | Promise<void>;
}
import { adminState } from '../../services/admin-state.js';
import type { IIncidentDetails, TIncidentSeverity, TIncidentStatus } from '../../interfaces/index.js';
import '../../elements/upladmin-incident-list/upladmin-incident-list.js';
import '../../elements/upladmin-incident-form/upladmin-incident-form.js';
import '../../elements/upladmin-incident-update/upladmin-incident-update.js';

type TViewMode = 'list' | 'form' | 'update';
type TTimeFilter = 'current' | 'past' | 'all';

@customElement('upladmin-incidents-view')
export class UpladminIncidentsView extends DeesElement implements IViewLifecycle {
  @state()
  accessor currentMode: TViewMode = 'list';

  @state()
  accessor selectedIncidentId: string | null = null;

  @state()
  accessor timeFilter: TTimeFilter = 'current';

  @state()
  accessor severityFilter: TIncidentSeverity | 'all' = 'all';

  @state()
  accessor loading: boolean = false;

  private appuiRef: DeesAppuiBase | null = null;

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host {
        display: block;
        height: 100%;
      }
    `,
  ];

  async onActivate(context: IViewActivationContext): Promise<void> {
    this.appuiRef = context.appui;

    // Check route params and view ID
    if (context.params?.id) {
      if (context.viewId === 'incident-update') {
        this.currentMode = 'update';
        this.selectedIncidentId = context.params.id;
      } else {
        this.currentMode = 'form';
        this.selectedIncidentId = context.params.id === 'create' ? null : context.params.id;
      }
    } else {
      this.currentMode = 'list';
      this.selectedIncidentId = null;
    }

    // Set secondary menu
    this.updateSecondaryMenu();

    // No content tabs - incident-list has internal tabs
    context.appui.setContentTabs([]);
  }

  private updateSecondaryMenu(): void {
    if (!this.appuiRef) return;

    const activeCount = adminState.getActiveIncidents().length;
    const pastCount = adminState.incidents.filter((i) => i.status === 'resolved' || i.status === 'postmortem').length;

    this.appuiRef.setSecondaryMenu({
      heading: 'Incidents',
      groups: [
        {
          name: 'Filter',
          iconName: 'lucide:filter',
          items: [
            {
              key: 'current',
              iconName: 'lucide:alertCircle',
              action: () => this.setTimeFilter('current'),
              badge: activeCount,
              badgeVariant: activeCount > 0 ? 'error' : 'default',
            },
            {
              key: 'past',
              iconName: 'lucide:history',
              action: () => this.setTimeFilter('past'),
              badge: pastCount,
            },
            {
              key: 'all',
              iconName: 'lucide:list',
              action: () => this.setTimeFilter('all'),
              badge: adminState.incidents.length,
            },
          ],
        },
        {
          name: 'Severity',
          iconName: 'lucide:alertTriangle',
          collapsed: true,
          items: [
            {
              key: 'critical',
              iconName: 'lucide:xCircle',
              action: () => this.setSeverityFilter('critical'),
            },
            {
              key: 'major',
              iconName: 'lucide:alertOctagon',
              action: () => this.setSeverityFilter('major'),
            },
            {
              key: 'minor',
              iconName: 'lucide:alertTriangle',
              action: () => this.setSeverityFilter('minor'),
            },
            {
              key: 'maintenance',
              iconName: 'lucide:wrench',
              action: () => this.setSeverityFilter('maintenance'),
            },
          ],
        },
        {
          name: 'Actions',
          iconName: 'lucide:zap',
          items: [
            {
              key: 'create',
              iconName: 'lucide:plus',
              action: () => this.showForm(null),
            },
          ],
        },
      ],
    });

    // Select current filter
    this.appuiRef.setSecondaryMenuSelection(this.timeFilter);
  }

  private setTimeFilter(filter: TTimeFilter): void {
    this.timeFilter = filter;
    this.severityFilter = 'all';
    this.appuiRef?.setSecondaryMenuSelection(filter);
  }

  private setSeverityFilter(severity: TIncidentSeverity): void {
    this.severityFilter = severity;
    this.appuiRef?.setSecondaryMenuSelection(severity);
  }

  private showForm(incidentId: string | null): void {
    this.currentMode = 'form';
    this.selectedIncidentId = incidentId;
  }

  private showUpdate(incidentId: string): void {
    this.currentMode = 'update';
    this.selectedIncidentId = incidentId;
  }

  private showList(): void {
    this.currentMode = 'list';
    this.selectedIncidentId = null;
  }

  private get filteredIncidents(): IIncidentDetails[] {
    let incidents = adminState.incidents;

    // Apply time filter
    if (this.timeFilter === 'current') {
      incidents = incidents.filter(
        (i) => i.status !== 'resolved' && i.status !== 'postmortem'
      );
    } else if (this.timeFilter === 'past') {
      incidents = incidents.filter(
        (i) => i.status === 'resolved' || i.status === 'postmortem'
      );
    }

    // Apply severity filter
    if (this.severityFilter !== 'all') {
      incidents = incidents.filter((i) => i.severity === this.severityFilter);
    }

    return incidents;
  }

  private handleIncidentSave = (e: CustomEvent): void => {
    console.log('Incident saved:', e.detail);
    this.showList();
  };

  private handleUpdateSave = (e: CustomEvent): void => {
    console.log('Update saved:', e.detail);
    this.showList();
  };

  private handleCancel = (): void => {
    this.showList();
  };

  private handleIncidentEdit = (e: CustomEvent): void => {
    const incident = e.detail?.incident as IIncidentDetails;
    if (incident) {
      this.showForm(incident.id);
    }
  };

  private handleIncidentAddUpdate = (e: CustomEvent): void => {
    const incident = e.detail?.incident as IIncidentDetails;
    if (incident) {
      this.showUpdate(incident.id);
    }
  };

  render() {
    if (this.currentMode === 'update') {
      const incident = this.selectedIncidentId
        ? adminState.incidents.find((i) => i.id === this.selectedIncidentId)
        : null;

      return html`
        <upladmin-incident-update
          .incident=${incident}
          .loading=${this.loading}
          @updateSave=${this.handleUpdateSave}
          @cancel=${this.handleCancel}
        ></upladmin-incident-update>
      `;
    }

    if (this.currentMode === 'form') {
      const incident = this.selectedIncidentId
        ? adminState.incidents.find((i) => i.id === this.selectedIncidentId)
        : null;

      return html`
        <upladmin-incident-form
          .incident=${incident
            ? {
                id: incident.id,
                title: incident.title,
                severity: incident.severity,
                status: incident.status,
                affectedServices: incident.affectedServices,
                impact: incident.impact,
                rootCause: incident.rootCause,
                resolution: incident.resolution,
              }
            : null}
          .availableServices=${adminState.monitors}
          .loading=${this.loading}
          @incidentSave=${this.handleIncidentSave}
          @cancel=${this.handleCancel}
        ></upladmin-incident-form>
      `;
    }

    return html`
      <upladmin-incident-list
        .incidents=${this.filteredIncidents}
        .loading=${this.loading}
        @incidentAdd=${() => this.showForm(null)}
        @incidentEdit=${this.handleIncidentEdit}
        @incidentAddUpdate=${this.handleIncidentAddUpdate}
      ></upladmin-incident-list>
    `;
  }
}