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

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

@customElement('objst-view-overview')
export class ObjstViewOverview extends DeesElement {
  @state()
  accessor serverState: appstate.IServerState = { status: null, connectionInfo: null };

  @state()
  accessor bucketsState: appstate.IBucketsState = { buckets: [] };

  constructor() {
    super();
    const serverSub = appstate.serverStatePart
      .select((s) => s)
      .subscribe((serverState) => {
        this.serverState = serverState;
      });
    this.rxSubscriptions.push(serverSub);

    const bucketsSub = appstate.bucketsStatePart
      .select((s) => s)
      .subscribe((bucketsState) => {
        this.bucketsState = bucketsState;
      });
    this.rxSubscriptions.push(bucketsSub);
  }

  async connectedCallback() {
    super.connectedCallback();
    appstate.serverStatePart.dispatchAction(appstate.fetchServerStatusAction, null);
    appstate.bucketsStatePart.dispatchAction(appstate.fetchBucketsAction, null);
  }

  public static styles = [
    cssManager.defaultStyles,
    shared.viewHostCss,
    css`
      .connectionInfo {
        margin-top: 32px;
        padding: 24px;
        border-radius: 8px;
        background: ${cssManager.bdTheme('#f5f5f5', '#1a1a2e')};
        border: 1px solid ${cssManager.bdTheme('#e0e0e0', '#2a2a4a')};
      }
      .connectionInfo h2 {
        margin: 0 0 16px 0;
        font-size: 18px;
        font-weight: 600;
        color: ${cssManager.bdTheme('#333', '#ccc')};
      }
      .connectionInfo .row {
        display: flex;
        align-items: center;
        margin-bottom: 8px;
        font-size: 14px;
      }
      .connectionInfo .label {
        width: 120px;
        font-weight: 500;
        color: ${cssManager.bdTheme('#666', '#999')};
      }
      .connectionInfo .value {
        font-family: monospace;
        color: ${cssManager.bdTheme('#333', '#e0e0e0')};
        padding: 4px 8px;
        border-radius: 4px;
        background: ${cssManager.bdTheme('#e8e8e8', '#252540')};
      }
    `,
  ];

  public render(): TemplateResult {
    const status = this.serverState.status;
    const connInfo = this.serverState.connectionInfo;

    const statsTiles: IStatsTile[] = [
      {
        id: 'status',
        title: 'Server Status',
        value: status?.running ? 'Online' : 'Offline',
        type: 'text',
        icon: 'lucide:server',
        color: status?.running ? '#4caf50' : '#f44336',
        description: status ? `Uptime: ${this.formatUptime(status.uptime)}` : 'Loading...',
      },
      {
        id: 'buckets',
        title: 'Buckets',
        value: status?.bucketCount ?? 0,
        type: 'number',
        icon: 'lucide:database',
        color: '#2196f3',
      },
      {
        id: 'objects',
        title: 'Total Objects',
        value: status?.totalObjectCount ?? 0,
        type: 'number',
        icon: 'lucide:file',
        color: '#ff9800',
      },
      {
        id: 'storage',
        title: 'Storage Used',
        value: status ? this.formatBytes(status.totalStorageBytes) : '0 B',
        type: 'text',
        icon: 'lucide:hardDrive',
        color: '#9c27b0',
      },
      {
        id: 'storagePort',
        title: 'Storage Port',
        value: status?.objstPort ?? 9000,
        type: 'number',
        icon: 'lucide:network',
        color: '#00bcd4',
      },
      {
        id: 'region',
        title: 'Region',
        value: status?.region ?? 'us-east-1',
        type: 'text',
        icon: 'lucide:globe',
        color: '#607d8b',
      },
    ];

    return html`
      <objst-sectionheading>Overview</objst-sectionheading>
      <dees-statsgrid
        .tiles=${statsTiles}
        .gridActions=${[
          {
            name: 'Refresh',
            iconName: 'lucide:refreshCw',
            action: async () => {
              await appstate.serverStatePart.dispatchAction(
                appstate.fetchServerStatusAction,
                null,
              );
              await appstate.bucketsStatePart.dispatchAction(appstate.fetchBucketsAction, null);
            },
          },
        ]}
      ></dees-statsgrid>

      ${connInfo
        ? html`
            <div class="connectionInfo">
              <h2>Connection Info</h2>
              <div class="row">
                <span class="label">Endpoint</span>
                <span class="value">${connInfo.endpoint}:${connInfo.port}</span>
              </div>
              <div class="row">
                <span class="label">Protocol</span>
                <span class="value">${connInfo.useSsl ? 'HTTPS' : 'HTTP'}</span>
              </div>
              <div class="row">
                <span class="label">Access Key</span>
                <span class="value">${connInfo.accessKey}</span>
              </div>
              <div class="row">
                <span class="label">Region</span>
                <span class="value">${connInfo.region}</span>
              </div>
            </div>
          `
        : ''}
    `;
  }

  private formatUptime(seconds: number): string {
    const days = Math.floor(seconds / 86400);
    const hours = Math.floor((seconds % 86400) / 3600);
    const minutes = Math.floor((seconds % 3600) / 60);
    if (days > 0) return `${days}d ${hours}h ${minutes}m`;
    if (hours > 0) return `${hours}h ${minutes}m`;
    return `${minutes}m`;
  }

  private formatBytes(bytes: number): string {
    if (bytes === 0) return '0 B';
    const units = ['B', 'KB', 'MB', 'GB', 'TB'];
    const i = Math.floor(Math.log(bytes) / Math.log(1024));
    return `${(bytes / Math.pow(1024, i)).toFixed(1)} ${units[i]}`;
  }
}