import {
  DeesElement,
  customElement,
  html,
  css,
  cssManager,
  property,
  type TemplateResult,
} from '@design.estate/dees-element';
import type { ISgPackage, TSgProtocol } from '../interfaces.js';
import './sg-protocol-badge.js';

declare global {
  interface HTMLElementTagNameMap {
    'sg-public-search-view': SgPublicSearchView;
  }
}

const ALL_PROTOCOLS: TSgProtocol[] = ['npm', 'oci', 'maven', 'cargo', 'composer', 'pypi', 'rubygems'];

@customElement('sg-public-search-view')
export class SgPublicSearchView extends DeesElement {
  public static demo = () => html`
    <div style="background: #09090b; min-height: 800px;">
      <sg-public-search-view
        .packages=${[
          { id: '1', name: '@myorg/web-framework', protocol: 'npm', organizationId: 'org1', repositoryId: 'r1', latestVersion: '3.2.1', isPrivate: false, downloadCount: 12400, updatedAt: '2026-03-19T10:30:00Z', description: 'Modern web framework for building full-stack applications with TypeScript' },
          { id: '2', name: 'myorg/api-gateway', protocol: 'oci', organizationId: 'org1', repositoryId: 'r2', latestVersion: 'v1.8.0', isPrivate: false, downloadCount: 890, updatedAt: '2026-03-18T14:20:00Z', description: 'API gateway container image with rate limiting and auth' },
          { id: '3', name: 'data-utils', protocol: 'pypi', organizationId: 'org2', repositoryId: 'r3', latestVersion: '0.9.4', isPrivate: false, downloadCount: 3200, updatedAt: '2026-03-17T08:15:00Z', description: 'Data utilities for Python with pandas integration' },
          { id: '4', name: 'myorg/auth-service', protocol: 'oci', organizationId: 'org1', repositoryId: 'r2', latestVersion: 'v2.1.0', isPrivate: false, downloadCount: 4500, updatedAt: '2026-03-16T12:00:00Z', description: 'Authentication microservice with OAuth2 and SAML support' },
          { id: '5', name: '@myorg/config-tools', protocol: 'npm', organizationId: 'org1', repositoryId: 'r1', latestVersion: '1.1.3', isPrivate: false, downloadCount: 780, updatedAt: '2026-03-14T09:30:00Z', description: 'Configuration management utilities for Node.js' },
          { id: '6', name: 'com.myorg:db-driver', protocol: 'maven', organizationId: 'org3', repositoryId: 'r4', latestVersion: '2.0.0', isPrivate: false, downloadCount: 5600, updatedAt: '2026-03-13T16:45:00Z', description: 'High-performance database driver for JVM applications' },
        ]}
        .total=${42}
        .query=${'web framework'}
        .activeProtocol=${''}
      ></sg-public-search-view>
    </div>
  `;

  public static demoGroups = ['Public'];

  @property({ type: Array })
  public accessor packages: ISgPackage[] = [];

  @property({ type: Number })
  public accessor total: number = 0;

  @property({ type: String })
  public accessor query: string = '';

  @property({ type: Array })
  public accessor protocols: string[] = [];

  @property({ type: String })
  public accessor activeProtocol: string = '';

  @property({ type: Boolean })
  public accessor loading: boolean = false;

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host {
        display: block;
        color: ${cssManager.bdTheme('#111', '#fff')};
      }

      /* Hero section */
      .hero {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 80px 24px 64px;
        text-align: center;
      }

      .hero-title {
        font-size: 40px;
        font-weight: 700;
        letter-spacing: -0.03em;
        margin-bottom: 12px;
        font-family: 'JetBrains Mono', monospace;
        color: ${cssManager.bdTheme('#111', '#fff')};
      }

      .hero-subtitle {
        font-size: 16px;
        color: ${cssManager.bdTheme('#666', '#999')};
        max-width: 600px;
        line-height: 1.5;
        margin-bottom: 32px;
      }

      .hero-search {
        display: flex;
        gap: 0;
        width: 100%;
        max-width: 600px;
        border: 1px solid ${cssManager.bdTheme('#ddd', '#333')};
      }

      .hero-search-input {
        flex: 1;
        padding: 14px 18px;
        background: ${cssManager.bdTheme('#fff', '#0a0a0a')};
        border: none;
        font-size: 16px;
        color: ${cssManager.bdTheme('#111', '#fff')};
        outline: none;
        font-family: inherit;
      }

      .hero-search-input::placeholder {
        color: ${cssManager.bdTheme('#aaa', '#555')};
      }

      .hero-search-btn {
        padding: 14px 28px;
        background: ${cssManager.bdTheme('#111', '#fff')};
        border: none;
        font-size: 14px;
        font-weight: 600;
        color: ${cssManager.bdTheme('#fff', '#111')};
        cursor: pointer;
        transition: opacity 150ms ease;
      }

      .hero-search-btn:hover {
        opacity: 0.85;
      }

      .protocol-row {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 24px;
      }

      /* Compact search bar (shown in results mode) */
      .compact-search {
        max-width: 960px;
        margin: 0 auto;
        padding: 24px 24px 0;
        display: flex;
        gap: 0;
      }

      .compact-search-input {
        flex: 1;
        padding: 10px 14px;
        background: ${cssManager.bdTheme('#fff', '#0a0a0a')};
        border: 1px solid ${cssManager.bdTheme('#ddd', '#333')};
        border-right: none;
        font-size: 14px;
        color: ${cssManager.bdTheme('#111', '#fff')};
        outline: none;
        font-family: inherit;
      }

      .compact-search-input::placeholder {
        color: ${cssManager.bdTheme('#aaa', '#555')};
      }

      .compact-search-input:focus {
        border-color: ${cssManager.bdTheme('#111', '#fff')};
      }

      .compact-search-btn {
        padding: 10px 20px;
        background: ${cssManager.bdTheme('#111', '#fff')};
        border: none;
        font-size: 13px;
        font-weight: 600;
        color: ${cssManager.bdTheme('#fff', '#111')};
        cursor: pointer;
        transition: opacity 150ms ease;
      }

      .compact-search-btn:hover {
        opacity: 0.85;
      }

      /* Results section */
      .results {
        max-width: 960px;
        margin: 0 auto;
        padding: 0 24px 48px;
      }

      .results-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 16px;
      }

      .results-count {
        font-size: 13px;
        color: ${cssManager.bdTheme('#888', '#777')};
      }

      /* Protocol filter tabs */
      .filters {
        display: flex;
        gap: 4px;
        flex-wrap: wrap;
        margin-bottom: 20px;
      }

      .filter-btn {
        padding: 6px 12px;
        background: transparent;
        border: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
        font-size: 12px;
        font-weight: 500;
        color: ${cssManager.bdTheme('#666', '#999')};
        cursor: pointer;
        transition: all 150ms ease;
        text-transform: uppercase;
        letter-spacing: 0.04em;
      }

      .filter-btn:hover {
        border-color: ${cssManager.bdTheme('#999', '#666')};
        color: ${cssManager.bdTheme('#111', '#fff')};
      }

      .filter-btn.active {
        background: ${cssManager.bdTheme('#111', '#fff')};
        color: ${cssManager.bdTheme('#fff', '#111')};
        border-color: ${cssManager.bdTheme('#111', '#fff')};
      }

      /* Package cards */
      .package-grid {
        display: flex;
        flex-direction: column;
        border: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
      }

      .package-card {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 18px;
        background: ${cssManager.bdTheme('#fff', '#111')};
        border-bottom: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
        cursor: pointer;
        transition: background 100ms ease;
      }

      .package-card:last-child {
        border-bottom: none;
      }

      .package-card:hover {
        background: ${cssManager.bdTheme('#fafafa', '#1a1a1a')};
      }

      .package-info {
        display: flex;
        flex-direction: column;
        gap: 4px;
        min-width: 0;
        flex: 1;
      }

      .package-name-row {
        display: flex;
        align-items: center;
        gap: 8px;
      }

      .package-name {
        font-size: 14px;
        font-weight: 600;
        font-family: 'JetBrains Mono', monospace;
        color: ${cssManager.bdTheme('#111', '#fff')};
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .package-description {
        font-size: 13px;
        color: ${cssManager.bdTheme('#666', '#aaa')};
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .package-meta {
        display: flex;
        align-items: center;
        gap: 4px;
        margin-top: 2px;
      }

      .meta-item {
        font-size: 11px;
        color: ${cssManager.bdTheme('#aaa', '#666')};
      }

      .meta-separator {
        font-size: 11px;
        color: ${cssManager.bdTheme('#ddd', '#444')};
      }

      .package-right {
        display: flex;
        align-items: center;
        gap: 16px;
        flex-shrink: 0;
        margin-left: 16px;
      }

      .version-tag {
        font-size: 12px;
        font-family: 'JetBrains Mono', monospace;
        color: ${cssManager.bdTheme('#666', '#999')};
        background: ${cssManager.bdTheme('#f5f5f5', '#1a1a1a')};
        padding: 2px 8px;
        border: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
      }

      .download-count {
        font-size: 12px;
        color: ${cssManager.bdTheme('#888', '#777')};
        font-family: 'JetBrains Mono', monospace;
        white-space: nowrap;
      }

      /* Pagination */
      .pagination {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 20px;
      }

      .pagination-info {
        font-size: 13px;
        color: ${cssManager.bdTheme('#888', '#777')};
      }

      .pagination-buttons {
        display: flex;
        gap: 4px;
      }

      .page-btn {
        padding: 6px 12px;
        background: transparent;
        border: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
        font-size: 13px;
        color: ${cssManager.bdTheme('#666', '#999')};
        cursor: pointer;
        transition: all 150ms ease;
      }

      .page-btn:hover {
        background: ${cssManager.bdTheme('#f5f5f5', '#1a1a1a')};
        color: ${cssManager.bdTheme('#111', '#fff')};
      }

      .page-btn:disabled {
        opacity: 0.4;
        cursor: not-allowed;
      }

      /* Loading state */
      .loading-overlay {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 64px 24px;
        font-size: 14px;
        color: ${cssManager.bdTheme('#888', '#777')};
      }

      .spinner {
        width: 20px;
        height: 20px;
        border: 2px solid transparent;
        border-top-color: ${cssManager.bdTheme('#111', '#fff')};
        border-radius: 50%;
        animation: spin 0.7s linear infinite;
        margin-right: 12px;
      }

      @keyframes spin {
        to { transform: rotate(360deg); }
      }

      /* Empty state */
      .empty-state {
        text-align: center;
        padding: 48px 32px;
        font-size: 14px;
        color: ${cssManager.bdTheme('#888', '#777')};
        border: 1px solid ${cssManager.bdTheme('#e5e5e5', '#333')};
        background: ${cssManager.bdTheme('#fff', '#111')};
      }

      /* Hero empty placeholder */
      .hero-placeholder {
        margin-top: 32px;
        padding: 32px;
        border: 1px dashed ${cssManager.bdTheme('#ddd', '#333')};
        text-align: center;
      }
      .hero-placeholder-icon {
        font-size: 48px;
        margin-bottom: 12px;
        opacity: 0.4;
      }
      .hero-placeholder-title {
        font-size: 16px;
        font-weight: 600;
        color: ${cssManager.bdTheme('#666', '#999')};
        margin-bottom: 8px;
      }
      .hero-placeholder-text {
        font-size: 13px;
        color: ${cssManager.bdTheme('#999', '#666')};
        line-height: 1.5;
        max-width: 400px;
        margin: 0 auto;
      }
    `,
  ];

  public render(): TemplateResult {
    const showHero = this.packages.length === 0 && !this.query && !this.loading;
    const showResults = this.packages.length > 0 || this.query || this.loading;
    const availableProtocols = this.protocols.length > 0 ? this.protocols : ALL_PROTOCOLS;

    return html`
      ${showHero ? this.renderHero() : ''}
      ${showResults ? this.renderResults(availableProtocols) : ''}
    `;
  }

  private renderHero(): TemplateResult {
    return html`
      <div class="hero">
        <div class="hero-title">Stack.Gallery Registry</div>
        <div class="hero-subtitle">
          Browse and discover packages across npm, OCI, Maven, Cargo, PyPI, Composer, and RubyGems
        </div>
        <div class="hero-search">
          <input
            type="text"
            class="hero-search-input"
            id="hero-search-input"
            placeholder="Search packages..."
            @keydown=${(e: KeyboardEvent) => {
              if (e.key === 'Enter') {
                this.query = (e.target as HTMLInputElement).value;
                this.handleSearch();
              }
            }}
          >
          <button class="hero-search-btn" @click=${() => {
            const input = this.shadowRoot?.getElementById('hero-search-input') as HTMLInputElement;
            if (input) {
              this.query = input.value;
              this.handleSearch();
            }
          }}>Search</button>
        </div>
        <div class="protocol-row">
          ${ALL_PROTOCOLS.map(
            (proto) => html`<sg-protocol-badge .protocol=${proto}></sg-protocol-badge>`
          )}
        </div>
        ${this.total === 0 ? html`
          <div class="hero-placeholder">
            <div class="hero-placeholder-icon">\u{1F4E6}</div>
            <div class="hero-placeholder-title">No public packages yet</div>
            <div class="hero-placeholder-text">
              This registry is ready to host packages. Sign in to create an organization and start publishing.
            </div>
          </div>
        ` : ''}
      </div>
    `;
  }

  private renderCompactSearch(): TemplateResult {
    return html`
      <div class="compact-search">
        <input
          type="text"
          class="compact-search-input"
          id="compact-search-input"
          placeholder="Search packages..."
          .value=${this.query}
          @keydown=${(e: KeyboardEvent) => {
            if (e.key === 'Enter') {
              this.query = (e.target as HTMLInputElement).value;
              this.handleSearch();
            }
          }}
        >
        <button class="compact-search-btn" @click=${() => {
          const input = this.shadowRoot?.getElementById('compact-search-input') as HTMLInputElement;
          if (input) {
            this.query = input.value;
            this.handleSearch();
          }
        }}>Search</button>
      </div>
    `;
  }

  private renderResults(availableProtocols: string[]): TemplateResult {
    return html`
      ${this.renderCompactSearch()}
      <div class="results">
        <div class="filters">
          <button
            class="filter-btn ${this.activeProtocol === '' ? 'active' : ''}"
            @click=${() => this.handleFilter('')}
          >All</button>
          ${availableProtocols.map(
            (proto) => html`
              <button
                class="filter-btn ${this.activeProtocol === proto ? 'active' : ''}"
                @click=${() => this.handleFilter(proto)}
              >${proto}</button>
            `
          )}
        </div>

        <div class="results-header">
          <span class="results-count">
            ${this.total} package${this.total !== 1 ? 's' : ''} found${this.query ? ` for "${this.query}"` : ''}
          </span>
        </div>

        ${this.loading
          ? html`
              <div class="loading-overlay">
                <div class="spinner"></div>
                Searching packages...
              </div>
            `
          : this.packages.length > 0
            ? html`
                <div class="package-grid">
                  ${this.packages.map(
                    (pkg) => html`
                      <div class="package-card" @click=${() => this.handleSelect(pkg.id)}>
                        <div class="package-info">
                          <div class="package-name-row">
                            <sg-protocol-badge .protocol=${pkg.protocol}></sg-protocol-badge>
                            <span class="package-name">${pkg.name}</span>
                          </div>
                          ${pkg.description
                            ? html`<div class="package-description">${pkg.description}</div>`
                            : ''}
                          <div class="package-meta">
                            <span class="meta-item">${this.formatNumber(pkg.downloadCount)} downloads</span>
                            <span class="meta-separator">&middot;</span>
                            <span class="meta-item">${this.formatDate(pkg.updatedAt)}</span>
                            <span class="meta-separator">&middot;</span>
                            <span class="meta-item">${pkg.organizationId}</span>
                          </div>
                        </div>
                        <div class="package-right">
                          ${pkg.latestVersion
                            ? html`<span class="version-tag">${pkg.latestVersion}</span>`
                            : ''}
                          <span class="download-count">${this.formatNumber(pkg.downloadCount)}</span>
                        </div>
                      </div>
                    `
                  )}
                </div>

                <div class="pagination">
                  <div class="pagination-info">
                    Showing ${this.packages.length} of ${this.total} packages
                  </div>
                  <div class="pagination-buttons">
                    <button class="page-btn" @click=${() => this.handlePage(-1)}>Previous</button>
                    <button class="page-btn" @click=${() => this.handlePage(1)}>Next</button>
                  </div>
                </div>
              `
            : html`<div class="empty-state">No packages found${this.query ? ` for "${this.query}"` : ''}</div>`
        }
      </div>
    `;
  }

  private formatNumber(n: number): string {
    if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(1)}M`;
    if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`;
    return n.toString();
  }

  private formatDate(dateStr: string): string {
    if (!dateStr) return '';
    try {
      return new Date(dateStr).toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
    } catch {
      return dateStr;
    }
  }

  private handleSearch() {
    this.dispatchEvent(
      new CustomEvent('search', {
        detail: { query: this.query },
        bubbles: true,
        composed: true,
      })
    );
  }

  private handleFilter(protocol: string) {
    this.activeProtocol = protocol;
    this.requestUpdate();
    this.dispatchEvent(
      new CustomEvent('filter', {
        detail: { protocol },
        bubbles: true,
        composed: true,
      })
    );
  }

  private handleSelect(packageId: string) {
    this.dispatchEvent(
      new CustomEvent('select', {
        detail: { packageId },
        bubbles: true,
        composed: true,
      })
    );
  }

  private handlePage(direction: number) {
    const currentOffset = this.packages.length;
    const offset = direction > 0 ? currentOffset : Math.max(0, currentOffset - this.packages.length * 2);
    this.dispatchEvent(
      new CustomEvent('page', {
        detail: { offset },
        bubbles: true,
        composed: true,
      })
    );
  }
}