import { Component, ChangeDetectionStrategy, signal } from '@angular/core';
import { CommonModule } from '@angular/common';
import { 
  ListItemComponent, 
  ListContainerComponent, 
  ListItemData
} from '../../../../../ui-essentials/src/lib/components/data-display/list';
import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';
import { 
  faInbox,
  faStar,
  faPaperPlane,
  faEdit,
  faArchive,
  faTrash,
  faPhone,
  faComment,
  faPlay,
  faDownload,
  faCheck,
  faChevronRight,
  faPlus,
  faMinus
} from '@fortawesome/free-solid-svg-icons';

@Component({
  selector: 'ui-list-demo',
  standalone: true,
  imports: [
    CommonModule,
    ListItemComponent,
    ListContainerComponent,
    FontAwesomeModule
  ],
  changeDetection: ChangeDetectionStrategy.OnPush,
  template: `
    <div style="padding: 2rem;">
      <h2>List Component Showcase</h2>
      
      <!-- Basic Lists with Size Variants -->
      <section style="margin-bottom: 3rem;">
        <h3>Basic Lists - Size Variants</h3>
        
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-bottom: 2rem;">
          <div>
            <h4>Small (sm)</h4>
            <ui-list-container 
              elevation="sm" 
              spacing="xs" 
              [rounded]="true"
              ariaLabel="Small navigation list">
              @for (item of navigationItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="sm"
                  lines="one"
                  variant="text"
                  [divider]="true"
                >
                  <fa-icon [icon]="getIconForItem(item.primary)" slot="trailing"></fa-icon>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
          
          <div>
            <h4>Medium (md)</h4>
            <ui-list-container 
              elevation="sm" 
              spacing="xs" 
              [rounded]="true"
              ariaLabel="Medium navigation list">
              @for (item of navigationItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="md"
                  lines="one"
                  variant="text"
                  [divider]="true"
                >
                  <fa-icon [icon]="getIconForItem(item.primary)" slot="trailing"></fa-icon>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
          
          <div>
            <h4>Large (lg)</h4>
            <ui-list-container 
              elevation="sm" 
              spacing="xs" 
              [rounded]="true"
              ariaLabel="Large navigation list">
              @for (item of navigationItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="lg"
                  lines="one"
                  variant="text"
                  [divider]="true"
                >
                  <fa-icon [icon]="getIconForItem(item.primary)" slot="trailing"></fa-icon>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
        </div>
      </section>

      <!-- Multi-line Lists -->
      <section style="margin-bottom: 3rem;">
        <h3>Multi-line Lists</h3>
        
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2rem;">
          <div>
            <h4>Two Lines</h4>
            <ui-list-container 
              elevation="md" 
              spacing="sm" 
              [rounded]="true"
              ariaLabel="Two line task list">
              @for (item of twoLineItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="md"
                  lines="two"
                  variant="text"
                >
                  <button 
                    slot="trailing" 
                    style="background: none; border: none; padding: 8px; cursor: pointer; color: #6c757d;"
                    (click)="handleAction('complete', item.primary)"
                    [attr.aria-label]="'Complete ' + item.primary">
                    <fa-icon [icon]="faCheck"></fa-icon>
                  </button>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
          
          <div>
            <h4>Three Lines</h4>
            <ui-list-container 
              elevation="md" 
              spacing="sm" 
              [rounded]="true"
              ariaLabel="Three line task list">
              @for (item of threeLineItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="lg"
                  lines="three"
                  variant="text"
                >
                  <div slot="trailing" style="display: flex; gap: 0.5rem;">
                    <button 
                      style="background: none; border: none; padding: 4px; cursor: pointer; color: #28a745;"
                      (click)="handleAction('approve', item.primary)"
                      [attr.aria-label]="'Approve ' + item.primary">
                      <fa-icon [icon]="faCheck"></fa-icon>
                    </button>
                  </div>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
        </div>
      </section>

      <!-- Avatar Lists -->
      <section style="margin-bottom: 3rem;">
        <h3>Lists with Avatars</h3>
        
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2rem;">
          <div>
            <h4>Contacts - Avatar + One Line</h4>
            <ui-list-container 
              elevation="sm" 
              spacing="xs" 
              [rounded]="true"
              ariaLabel="Contact list">
              @for (item of contactItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="md"
                  lines="one"
                  variant="avatar"
                >
                  <div slot="trailing" style="display: flex; gap: 0.75rem;">
                    <button 
                      style="background: none; border: none; padding: 4px; cursor: pointer; color: #007bff;"
                      (click)="handleAction('call', item.primary)"
                      [attr.aria-label]="'Call ' + item.primary">
                      <fa-icon [icon]="faPhone"></fa-icon>
                    </button>
                    <button 
                      style="background: none; border: none; padding: 4px; cursor: pointer; color: #28a745;"
                      (click)="handleAction('message', item.primary)"
                      [attr.aria-label]="'Message ' + item.primary">
                      <fa-icon [icon]="faComment"></fa-icon>
                    </button>
                  </div>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
          
          <div>
            <h4>Messages - Avatar + Two Lines</h4>
            <ui-list-container 
              elevation="sm" 
              spacing="xs" 
              [rounded]="true"
              ariaLabel="Message list">
              @for (item of messageItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="lg"
                  lines="two"
                  variant="avatar"
                >
                  <span 
                    slot="trailing" 
                    style="font-size: 0.75rem; color: #6c757d;">
                    2h
                  </span>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
        </div>
      </section>

      <!-- Media Lists -->
      <section style="margin-bottom: 3rem;">
        <h3>Lists with Media</h3>
        
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)); gap: 2rem;">
          <div>
            <h4>Music - Media + Two Lines</h4>
            <ui-list-container 
              elevation="md" 
              spacing="sm" 
              [rounded]="true"
              ariaLabel="Music playlist">
              @for (item of musicItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="lg"
                  lines="two"
                  variant="media"
                >
                  <div slot="trailing" style="display: flex; gap: 0.75rem; align-items: center;">
                    <span style="font-size: 0.875rem; color: #6c757d;">3:42</span>
                    <button 
                      style="background: none; border: none; padding: 8px; cursor: pointer; color: #007bff;"
                      (click)="handleAction('play', item.primary)"
                      [attr.aria-label]="'Play ' + item.primary">
                      <fa-icon [icon]="faPlay"></fa-icon>
                    </button>
                  </div>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
          
          <div>
            <h4>Videos - Media + Three Lines</h4>
            <ui-list-container 
              elevation="md" 
              spacing="sm" 
              [rounded]="true"
              ariaLabel="Video library">
              @for (item of videoItems; track item.primary) {
                <ui-list-item 
                  [data]="item"
                  size="lg"
                  lines="three"
                  variant="media"
                >
                  <div slot="trailing" style="display: flex; flex-direction: column; align-items: center; gap: 0.5rem;">
                    <div style="display: flex; align-items: center; gap: 0.25rem;">
                      <fa-icon [icon]="faStar" style="color: #ffc107; font-size: 0.75rem;"></fa-icon>
                      <span style="font-size: 0.75rem; color: #6c757d;">4.8</span>
                    </div>
                    <button 
                      style="background: none; border: none; padding: 4px; cursor: pointer; color: #007bff;"
                      (click)="handleAction('download', item.primary)"
                      [attr.aria-label]="'Download ' + item.primary">
                      <fa-icon [icon]="faDownload"></fa-icon>
                    </button>
                  </div>
                </ui-list-item>
              }
            </ui-list-container>
          </div>
        </div>
      </section>

      <!-- Interactive Demo -->
      <section style="margin-bottom: 3rem;">
        <h3>Interactive Demo</h3>
        <p style="margin-bottom: 1rem; color: #6c757d;">
          Click items to interact with them:
        </p>
        
        <div style="max-width: 600px;">
          <ui-list-container 
            elevation="sm" 
            spacing="sm" 
            [rounded]="true"
            ariaLabel="Interactive demo list">
            @for (item of interactiveItems(); track item.primary) {
              <ui-list-item 
                [data]="item"
                size="md"
                lines="two"
                variant="avatar"
                style="cursor: pointer;"
                (click)="toggleInteractiveItem(item.primary)"
              >
                <div slot="trailing" style="display: flex; align-items: center; gap: 0.5rem;">
                  @if (item.selected) {
                    <span style="background: #28a745; color: white; padding: 4px 8px; border-radius: 12px; font-size: 0.75rem;">
                      Enabled
                    </span>
                  } @else if (item.disabled) {
                    <span style="background: #dc3545; color: white; padding: 4px 8px; border-radius: 12px; font-size: 0.75rem;">
                      Disabled
                    </span>
                  } @else {
                    <span style="background: #6c757d; color: white; padding: 4px 8px; border-radius: 12px; font-size: 0.75rem;">
                      Click to enable
                    </span>
                  }
                </div>
              </ui-list-item>
            }
          </ui-list-container>
        </div>
      </section>

      <!-- Code Examples -->
      <section style="margin-bottom: 3rem;">
        <h3>Usage Examples</h3>
        <div style="background: #f8f9fa; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #007bff;">
          <h4>Basic List with Icons:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto; font-size: 0.875rem;"><code>&lt;ui-list-container elevation="sm" spacing="xs" [rounded]="true"&gt;
  &lt;ui-list-item 
    [data]="&#123;primary: 'Inbox'&#125;"
    size="md"
    lines="one"
    variant="text"&gt;
    &lt;fa-icon [icon]="faInbox" slot="trailing"&gt;&lt;/fa-icon&gt;
  &lt;/ui-list-item&gt;
&lt;/ui-list-container&gt;</code></pre>
          
          <h4>List with Avatar and Actions:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto; font-size: 0.875rem;"><code>&lt;ui-list-container elevation="md" spacing="sm" [rounded]="true"&gt;
  &lt;ui-list-item 
    [data]="&#123;
      primary: 'John Doe',
      secondary: 'john&#64;example.com',
      avatarSrc: 'avatar.jpg'
    &#125;"
    size="lg"
    lines="two"
    variant="avatar"&gt;
    &lt;button slot="trailing" (click)="call()"&gt;
      &lt;fa-icon [icon]="faPhone"&gt;&lt;/fa-icon&gt;
    &lt;/button&gt;
  &lt;/ui-list-item&gt;
&lt;/ui-list-container&gt;</code></pre>
        </div>
      </section>

      @if (lastAction()) {
        <div style="position: fixed; bottom: 20px; right: 20px; background: #007bff; color: white; padding: 1rem; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); max-width: 300px;">
          <strong>Action:</strong> {{ lastAction() }}
        </div>
      }
    </div>
  `,
  styles: [`
    h2 {
      color: hsl(279, 14%, 11%);
      font-size: 2rem;
      margin-bottom: 2rem;
      border-bottom: 2px solid hsl(258, 100%, 47%);
      padding-bottom: 0.5rem;
    }
    
    h3 {
      color: hsl(279, 14%, 25%);
      font-size: 1.5rem;
      margin-bottom: 1rem;
      margin-top: 2rem;
    }
    
    h4 {
      color: hsl(287, 12%, 35%);
      font-size: 1.125rem;
      margin-bottom: 0.75rem;
      margin-top: 1rem;
    }
    
    section {
      border: 1px solid hsl(289, 14%, 90%);
      border-radius: 12px;
      padding: 1.5rem;
      background: hsl(286, 20%, 99%);
      margin-bottom: 2rem;
    }
    
    pre {
      font-size: 0.875rem;
      line-height: 1.5;
      margin: 0.5rem 0;
      white-space: pre-wrap;
    }
    
    code {
      font-family: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Courier New', monospace;
      color: #d63384;
    }

    button {
      transition: all 0.15s ease;
    }

    button:hover {
      transform: translateY(-1px);
    }

    button:active {
      transform: translateY(0);
    }

    fa-icon {
      transition: color 0.2s ease;
    }
  `]
})
export class ListDemoComponent {
  // State signals
  lastAction = signal('');
  
  // Demo data
  navigationItems: ListItemData[] = [
    { primary: 'Inbox' },
    { primary: 'Starred' },
    { primary: 'Sent' },
    { primary: 'Drafts' },
    { primary: 'Archive' },
    { primary: 'Trash' }
  ];

  twoLineItems: ListItemData[] = [
    {
      primary: 'Review Design System Updates',
      secondary: 'Check new component specifications and design tokens'
    },
    {
      primary: 'Team Standup Meeting',
      secondary: 'Daily sync with development and design teams'
    },
    {
      primary: 'Code Review - Authentication',
      secondary: 'Review pull request #247 for OAuth integration'
    }
  ];

  threeLineItems: ListItemData[] = [
    {
      primary: 'Angular 19 Migration',
      secondary: 'Upgrade project to latest Angular version with control flow',
      tertiary: 'Estimated completion: Next Sprint • Priority: High'
    },
    {
      primary: 'Design System Documentation',
      secondary: 'Create comprehensive documentation for all components',
      tertiary: 'Status: In Progress • Assigned: Design Team'
    }
  ];

  contactItems: ListItemData[] = [
    {
      primary: 'Sarah Wilson',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=sarah',
      avatarAlt: 'Sarah Wilson avatar'
    },
    {
      primary: 'Alex Chen',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=alex',
      avatarAlt: 'Alex Chen avatar'
    },
    {
      primary: 'Mike Rodriguez',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=mike',
      avatarAlt: 'Mike Rodriguez avatar'
    }
  ];

  messageItems: ListItemData[] = [
    {
      primary: 'John Doe',
      secondary: 'Hey! How\'s the new component library coming along?',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=john',
      avatarAlt: 'John Doe avatar'
    },
    {
      primary: 'Jane Smith',
      secondary: 'The design tokens look great. Ready for review when you are.',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=jane',
      avatarAlt: 'Jane Smith avatar'
    }
  ];

  musicItems: ListItemData[] = [
    {
      primary: 'Bohemian Rhapsody',
      secondary: 'Queen • A Night at the Opera',
      mediaSrc: 'https://picsum.photos/80/80?random=1',
      mediaAlt: 'Album cover'
    },
    {
      primary: 'Hotel California',
      secondary: 'Eagles • Hotel California',
      mediaSrc: 'https://picsum.photos/80/80?random=2',
      mediaAlt: 'Album cover'
    }
  ];

  videoItems: ListItemData[] = [
    {
      primary: 'Angular Fundamentals',
      secondary: 'Complete guide to modern Angular development',
      tertiary: 'Duration: 2h 30m • Updated: Today • 1.2M views',
      mediaSrc: 'https://picsum.photos/80/80?random=5',
      mediaAlt: 'Video thumbnail'
    }
  ];

  interactiveItems = signal<ListItemData[]>([
    {
      primary: 'Email Notifications',
      secondary: 'Receive emails about important updates',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=email',
      selected: false,
      disabled: false
    },
    {
      primary: 'SMS Alerts',
      secondary: 'Get text messages for urgent notifications',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=sms',
      selected: true,
      disabled: false
    },
    {
      primary: 'Marketing Communications',
      secondary: 'Promotional offers and product updates',
      avatarSrc: 'https://api.dicebear.com/7.x/avataaars/svg?seed=marketing',
      selected: false,
      disabled: true
    }
  ]);

  // Font Awesome icons
  faInbox = faInbox;
  faStar = faStar;
  faPaperPlane = faPaperPlane;
  faEdit = faEdit;
  faArchive = faArchive;
  faTrash = faTrash;
  faPhone = faPhone;
  faComment = faComment;
  faPlay = faPlay;
  faDownload = faDownload;
  faCheck = faCheck;
  faChevronRight = faChevronRight;
  faPlus = faPlus;
  faMinus = faMinus;

  // Helper methods
  getIconForItem(itemName: string): any {
    const iconMap: { [key: string]: any } = {
      'Inbox': faInbox,
      'Starred': faStar,
      'Sent': faPaperPlane,
      'Drafts': faEdit,
      'Archive': faArchive,
      'Trash': faTrash
    };
    return iconMap[itemName] || faInbox;
  }

  // Event handlers
  handleAction(action: string, item?: string): void {
    const message = item 
      ? `${action} action on "${item}" at ${new Date().toLocaleTimeString()}`
      : `${action} action at ${new Date().toLocaleTimeString()}`;
    
    this.lastAction.set(message);
    console.log(`List action: ${action}`, item);
    
    // Clear the message after 3 seconds
    setTimeout(() => this.lastAction.set(''), 3000);
  }

  toggleInteractiveItem(itemName: string): void {
    this.interactiveItems.update(items =>
      items.map(item => {
        if (item.primary === itemName && !item.disabled) {
          return { ...item, selected: !item.selected };
        }
        return item;
      })
    );
    
    this.handleAction('toggle', itemName);
  }
}