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

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

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

@customElement('cloudly-view-images')
export class CloudlyViewImages extends DeesElement {
  @state()
  private accessor data: appstate.IDataState = {} as any;

  @state()
  private accessor currentView: 'list' | 'detail' = 'list';

  @state()
  private accessor selectedImage: plugins.interfaces.data.IImage | null = null;

  constructor() {
    super();
    const subscription = appstate.dataState
      .select((stateArg) => stateArg)
      .subscribe((dataArg) => {
        this.data = dataArg;
      });
    this.rxSubscriptions.push(subscription);
  }

  public static styles = [
    cssManager.defaultStyles,
    shared.viewHostCss,
    css`
      .detail-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
      .detail-title { margin: 0; font-size: 26px; font-weight: 700; color: var(--ci-shade-7, #e4e4e7); }
      .detail-subtitle { margin-top: 6px; color: var(--ci-shade-4, #71717a); font-size: 14px; overflow-wrap: anywhere; }
      .back-button { border: 1px solid var(--ci-shade-2, #27272a); border-radius: 7px; padding: 9px 13px; font-size: 13px; cursor: pointer; background: var(--ci-shade-1, #09090b); color: var(--ci-shade-7, #e4e4e7); }
      .summary-card, .detail-card { background: var(--ci-shade-1, #09090b); border: 1px solid var(--ci-shade-2, #27272a); border-radius: 9px; padding: 16px; }
      .spaced-card { margin-top: 14px; }
      .details-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
      .section-title { font-size: 14px; font-weight: 700; color: var(--ci-shade-7, #e4e4e7); margin-bottom: 10px; }
      .kv-list { display: grid; gap: 8px; }
      .kv-row { display: grid; grid-template-columns: 150px 1fr; gap: 10px; font-size: 13px; }
      .kv-key { color: var(--ci-shade-4, #71717a); }
      .kv-value { color: var(--ci-shade-7, #e4e4e7); overflow-wrap: anywhere; }
      .image-name { font-weight: 700; color: var(--ci-shade-7, #e4e4e7); }
      .empty-state { color: var(--ci-shade-4, #71717a); font-size: 13px; padding: 12px 0; }
      .source-badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
      .source-upload { background: rgba(59, 130, 246, 0.16); color: #60a5fa; }
      .source-registry { background: rgba(34, 197, 94, 0.16); color: #22c55e; }
      .source-unknown { background: rgba(161, 161, 170, 0.16); color: #a1a1aa; }
      dees-statsgrid { margin-bottom: 18px; }
      @media (max-width: 900px) { .details-grid { grid-template-columns: 1fr; } .detail-header { flex-direction: column; } }
    `,
  ];

  public render(): TemplateResult {
    if (this.currentView === 'detail') {
      return this.renderDetailView();
    }
    return this.renderListView();
  }

  private renderListView(): TemplateResult {
    return html`
      <cloudly-sectionheading>Images</cloudly-sectionheading>
      <dees-table
        heading1="Images"
        heading2="an image is needed for running a service"
        .data=${this.data.images || []}
        .displayFunction=${(image: plugins.interfaces.data.IImage) => {
          const latestVersion = this.getLatestImageVersion(image);
          return {
            Name: html`<span class="image-name">${image.data.name}</span>`,
            Description: image.data.description,
            Location: this.getLocationLabel(image),
            Versions: image.data.versions?.length || 0,
            'Total Size': this.formatBytes(this.getImageTotalSize(image)),
            Latest: latestVersion?.versionString || '-',
            'Last Push': this.formatDate(image.data.lastPushEvent?.pushedAt),
            'Used By': this.getServicesUsingImage(image).length,
          };
        }}
        .dataActions=${[
          {
            name: 'Create Image',
            type: ['header', 'footer'],
            iconName: 'plus',
            actionFunc: async () => {
              await plugins.deesCatalog.DeesModal.createAndShow({
                heading: 'Create Image',
                content: html`
                  <dees-form>
                    <dees-input-text .label=${'name'} .key=${'data.name'} .value=${''}></dees-input-text>
                    <dees-input-text .label=${'description'} .key=${'data.description'} .value=${''}></dees-input-text>
                  </dees-form>
                `,
                menuOptions: [
                  { name: 'cancel', action: async (modalArg: any) => { await modalArg.destroy(); } },
                  { name: 'save', action: async (modalArg: any) => {
                      const deesForm = modalArg.shadowRoot.querySelector('dees-form');
                      const formData = await deesForm.collectFormData();
                      await appstate.dataState.dispatchAction(appstate.createImageAction, { imageName: formData['data.name'] as string, description: formData['data.description'] as string });
                      await modalArg.destroy();
                    } },
                ],
              });
            },
          },
          {
            name: 'Details',
            type: ['contextmenu', 'inRow', 'doubleClick'],
            iconName: 'lucide:Eye',
            actionFunc: async (dataArg: plugins.deesCatalog.ITableActionDataArg<plugins.interfaces.data.IImage>) => {
              this.openImageDetail(dataArg.item);
            },
          },
          {
            name: 'Delete',
            iconName: 'trash',
            type: ['contextmenu', 'inRow'],
            actionFunc: async (itemArg: plugins.deesCatalog.ITableActionDataArg<plugins.interfaces.data.IImage>) => {
              await plugins.deesCatalog.DeesModal.createAndShow({
                heading: `Delete Image "${itemArg.item.data.name}"`,
                content: html`
                  <div style="text-align:center">Do you really want to delete the image?</div>
                  <div style="font-size: 0.8em; color: red; text-align:center; padding: 16px; margin-top: 24px; border: 1px solid #444; font-family: Intel One Mono; font-size: 16px;">${itemArg.item.id}</div>
                `,
                menuOptions: [
                  { name: 'cancel', action: async (modalArg: any) => { await modalArg.destroy(); } },
                  { name: 'delete', action: async (modalArg: any) => { await appstate.dataState.dispatchAction(appstate.deleteImageAction, { imageId: itemArg.item.id, }); await modalArg.destroy(); } },
                ],
              });
            },
          },
        ] as plugins.deesCatalog.ITableAction[]}
      ></dees-table>
    `;
  }

  private renderDetailView(): TemplateResult {
    const image = this.getActiveImage();
    if (!image) {
      return html`
        <cloudly-sectionheading>Image Details</cloudly-sectionheading>
        <button class="back-button" @click=${() => { this.currentView = 'list'; }}>Back to Images</button>
      `;
    }

    const versions = this.getSortedImageVersions(image);
    const latestVersion = this.getLatestImageVersion(image);
    const lastPushEvent = image.data.lastPushEvent;
    const location = image.data.location;
    const servicesUsingImage = this.getServicesUsingImage(image);

    return html`
      <cloudly-sectionheading>Image Details</cloudly-sectionheading>
      <div class="detail-header">
        <div>
          <h2 class="detail-title">${image.data.name}</h2>
          <div class="detail-subtitle">${image.data.description || 'No description configured'}</div>
        </div>
        <button class="back-button" @click=${() => { this.currentView = 'list'; }}>Back to Images</button>
      </div>

      <dees-statsgrid .tiles=${this.getImageStatsTiles(image)} .minTileWidth=${220} .gap=${12}></dees-statsgrid>

      <div class="detail-card">
        <div class="section-title">Versions</div>
        <dees-table
          .heading1=${'Image Versions'}
          .heading2=${versions.length ? 'Stored image versions and registry metadata' : 'No versions recorded'}
          .data=${versions}
          .displayFunction=${(versionArg: plugins.interfaces.data.IImage['data']['versions'][number]) => ({
            Version: versionArg.versionString,
            Source: this.renderSourceBadge(versionArg.source),
            Size: this.formatBytes(versionArg.size),
            Digest: versionArg.digest || '-',
            Repository: versionArg.registryRepository || '-',
            Tag: versionArg.registryTag || '-',
            Storage: versionArg.storagePath || '-',
            Created: this.formatDate(versionArg.createdAt),
          })}
        ></dees-table>
      </div>

      <div class="detail-card spaced-card">
        <div class="section-title">Services Using This Image</div>
        ${servicesUsingImage.length ? html`
          <dees-table
            .heading1=${'Service Usage'}
            .heading2=${'Services currently configured with this image ID'}
            .data=${servicesUsingImage}
            .displayFunction=${(serviceArg: plugins.interfaces.data.IService) => ({
              Name: serviceArg.data.name,
              Version: serviceArg.data.imageVersion || '-',
              Category: serviceArg.data.serviceCategory || 'workload',
              Strategy: serviceArg.data.deploymentStrategy || 'custom',
              Domains: serviceArg.data.domains?.map((domainArg) => domainArg.name).join(', ') || '-',
              Deployments: serviceArg.data.deploymentIds?.length || 0,
            })}
          ></dees-table>
        ` : html`<div class="empty-state">No services currently reference this image.</div>`}
      </div>

      <div class="details-grid">
        <div class="detail-card">
          <div class="section-title">Registry Source</div>
          <div class="kv-list">
            <div class="kv-row"><span class="kv-key">Image ID</span><span class="kv-value">${image.id}</span></div>
            <div class="kv-row"><span class="kv-key">Name</span><span class="kv-value">${image.data.name}</span></div>
            <div class="kv-row"><span class="kv-key">Description</span><span class="kv-value">${image.data.description || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Internal</span><span class="kv-value">${location?.internal === false ? 'no' : 'yes'}</span></div>
            <div class="kv-row"><span class="kv-key">External Registry</span><span class="kv-value">${location?.externalRegistryId || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">External Tag</span><span class="kv-value">${location?.externalImageTag || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">External Ref</span><span class="kv-value">${location?.externalImageRef || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Latest Created</span><span class="kv-value">${this.formatDate(latestVersion?.createdAt)}</span></div>
          </div>
        </div>
        <div class="detail-card">
          <div class="section-title">Last Push</div>
          <div class="kv-list">
            <div class="kv-row"><span class="kv-key">Repository</span><span class="kv-value">${lastPushEvent?.repository || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Tag</span><span class="kv-value">${lastPushEvent?.tag || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Digest</span><span class="kv-value">${lastPushEvent?.digest || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Image URL</span><span class="kv-value">${lastPushEvent?.imageUrl || '-'}</span></div>
            <div class="kv-row"><span class="kv-key">Pushed At</span><span class="kv-value">${this.formatDate(lastPushEvent?.pushedAt)}</span></div>
            <div class="kv-row"><span class="kv-key">Actor</span><span class="kv-value">${lastPushEvent?.actorUserId || '-'}</span></div>
          </div>
        </div>
      </div>
    `;
  }

  private getActiveImage(): plugins.interfaces.data.IImage | null {
    if (!this.selectedImage) {
      return null;
    }
    return this.data.images?.find((imageArg) => imageArg.id === this.selectedImage!.id) || this.selectedImage;
  }

  private openImageDetail(imageArg: plugins.interfaces.data.IImage) {
    this.selectedImage = imageArg;
    this.currentView = 'detail';
  }

  private getImageTotalSize(imageArg: plugins.interfaces.data.IImage): number {
    return (imageArg.data.versions || []).reduce((sumArg, versionArg) => sumArg + (versionArg.size || 0), 0);
  }

  private getSortedImageVersions(imageArg: plugins.interfaces.data.IImage): plugins.interfaces.data.IImage['data']['versions'] {
    return [...(imageArg.data.versions || [])].sort((a, b) => (b.createdAt || 0) - (a.createdAt || 0));
  }

  private getLatestImageVersion(imageArg: plugins.interfaces.data.IImage): plugins.interfaces.data.IImage['data']['versions'][number] | undefined {
    return this.getSortedImageVersions(imageArg)[0];
  }

  private getServicesUsingImage(imageArg: plugins.interfaces.data.IImage): plugins.interfaces.data.IService[] {
    return (this.data.services || []).filter((serviceArg) => serviceArg.data.imageId === imageArg.id);
  }

  private getImageStatsTiles(imageArg: plugins.interfaces.data.IImage) {
    const latestVersion = this.getLatestImageVersion(imageArg);
    const totalSize = this.getImageTotalSize(imageArg);
    const servicesUsingImage = this.getServicesUsingImage(imageArg);
    return [
      { id: 'versions', title: 'Versions', value: imageArg.data.versions?.length || 0, type: 'number' as const, icon: 'lucide:Tags', description: 'Recorded image versions' },
      { id: 'size', title: 'Total Size', value: this.formatBytes(totalSize), type: 'text' as const, icon: 'lucide:HardDrive', description: 'Stored archive size' },
      { id: 'latest', title: 'Latest Version', value: latestVersion?.versionString || '-', type: 'text' as const, icon: 'lucide:GitBranch', description: this.formatDate(latestVersion?.createdAt) },
      { id: 'usage', title: 'Used By', value: servicesUsingImage.length, type: 'number' as const, icon: 'lucide:Layers', description: 'Configured services' },
    ];
  }

  private getLocationLabel(imageArg: plugins.interfaces.data.IImage): string {
    const location = imageArg.data.location;
    if (!location || location.internal) {
      return 'Internal registry';
    }
    return location.externalImageRef || location.externalImageTag || 'External registry';
  }

  private formatBytes(sizeArg?: number): string {
    if (!sizeArg) {
      return sizeArg === 0 ? '0 B' : '-';
    }
    const units = ['B', 'KB', 'MB', 'GB', 'TB'];
    let size = sizeArg;
    let unitIndex = 0;
    while (size >= 1024 && unitIndex < units.length - 1) {
      size = size / 1024;
      unitIndex++;
    }
    return `${size.toFixed(unitIndex === 0 ? 0 : 1)} ${units[unitIndex]}`;
  }

  private formatDate(timestampArg?: number): string {
    return timestampArg ? new Date(timestampArg).toLocaleString() : '-';
  }

  private renderSourceBadge(sourceArg?: 'upload' | 'registry'): TemplateResult {
    const source = sourceArg || 'unknown';
    return html`<span class="source-badge source-${source}">${source}</span>`;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'cloudly-view-images': CloudlyViewImages;
  }
}