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

// Import design tokens
import { colors, bdTheme } from './00colors.js';
import { spacing, radius, shadows, transitions } from './00tokens.js';
import { fontFamilies, typography } from './00fonts.js';

// Import components
import { SioConversationSelector, type IConversation } from './sio-conversation-selector.js';
import { SioConversationView, type IMessage, type IConversationData, type IAttachment } from './sio-conversation-view.js';
import { SioImageLightbox, type ILightboxImage } from './sio-image-lightbox.js';

// Make sure components are loaded
SioConversationSelector;
SioConversationView;
SioImageLightbox;

declare global {
  interface HTMLElementTagNameMap {
    'sio-combox': SioCombox;
  }
}

@customElement('sio-combox')
export class SioCombox extends DeesElement {
  public static demo = () => html` <sio-combox></sio-combox> `;

  @property({ type: Object })
  public referenceObject: HTMLElement;

  @state()
  private selectedConversationId: string | null = null;

  @state()
  private conversations: IConversation[] = [
    {
      id: '1',
      title: 'Technical Support',
      lastMessage: 'Thanks for your help with the login issue!',
      time: '2 min ago',
      unread: true,
    },
    {
      id: '2',
      title: 'Billing Question',
      lastMessage: 'I need help understanding my invoice',
      time: '1 hour ago',
    },
    {
      id: '3',
      title: 'Feature Request',
      lastMessage: 'That would be great! Looking forward to it',
      time: 'Yesterday',
    },
    {
      id: '4',
      title: 'General Inquiry',
      lastMessage: 'Thank you for the information',
      time: '2 days ago',
    }
  ];

  @state()
  private messages: { [conversationId: string]: IMessage[] } = {
    '1': [
      { id: '1', text: 'Hi, I\'m having trouble logging in', sender: 'user', time: '10:00 AM' },
      { id: '2', text: 'I can help you with that. Can you tell me what error you\'re seeing?', sender: 'support', time: '10:02 AM' },
      { id: '3', text: 'It says "Invalid credentials" but I\'m sure my password is correct', sender: 'user', time: '10:03 AM' },
      { id: '4', text: 'Let me check your account. Please try resetting your password using the forgot password link.', sender: 'support', time: '10:05 AM' },
      { 
        id: '5', 
        text: 'Here\'s a screenshot of the error', 
        sender: 'user', 
        time: '10:08 AM',
        attachments: [{
          id: 'att1',
          name: 'error-screenshot.png',
          size: 245780,
          type: 'image/png',
          url: 'https://picsum.photos/400/300?random=1'
        }]
      },
      { id: '6', text: 'Thanks for your help with the login issue!', sender: 'user', time: '10:10 AM' },
      { 
        id: '7', 
        text: 'Here is the documentation you requested', 
        sender: 'support', 
        time: '10:15 AM',
        attachments: [{
          id: 'att2',
          name: 'user-guide.pdf',
          size: 2457600,
          type: 'application/pdf',
          url: 'data:application/pdf;base64,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'
        }]
      },
    ],
    '2': [
      { id: '1', text: 'I need help understanding my invoice', sender: 'user', time: '9:00 AM' },
      { id: '2', text: 'I\'d be happy to help explain your invoice. Which part is unclear?', sender: 'support', time: '9:05 AM' },
    ],
    '3': [
      { id: '1', text: 'I\'d love to see dark mode support in your app!', sender: 'user', time: 'Yesterday' },
      { id: '2', text: 'Thanks for the suggestion! We\'re actually working on dark mode and it should be available next month.', sender: 'support', time: 'Yesterday' },
      { id: '3', text: 'That would be great! Looking forward to it', sender: 'user', time: 'Yesterday' },
    ],
    '4': [
      { id: '1', text: 'Can you tell me more about your enterprise plans?', sender: 'user', time: '2 days ago' },
      { id: '2', text: 'Of course! Our enterprise plans include advanced features like SSO, dedicated support, and custom integrations.', sender: 'support', time: '2 days ago' },
      { id: '3', text: 'Thank you for the information', sender: 'user', time: '2 days ago' },
    ]
  };

  constructor() {
    super();
    domtools.DomTools.setupDomTools();
  }

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host {
        display: block;
        height: 600px;
        width: 800px;
        background: ${bdTheme('background')};
        border-radius: ${unsafeCSS(radius['2xl'])};
        border: 1px solid ${bdTheme('border')};
        box-shadow: ${unsafeCSS(shadows.xl)};
        overflow: hidden;
        font-family: ${unsafeCSS(fontFamilies.sans)};
        position: relative;
        transform-origin: bottom right;
      }
      
      :host(.animate-in) {
        animation: scaleIn 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
      }
      
      @keyframes scaleIn {
        from {
          opacity: 0;
          transform: scale(0.9) translateY(10px);
        }
        to {
          opacity: 1;
          transform: scale(1) translateY(0);
        }
      }
      
      :host::before {
        content: '';
        position: absolute;
        inset: 0;
        border-radius: ${unsafeCSS(radius['2xl'])};
        padding: 1px;
        background: linear-gradient(145deg, ${bdTheme('border')}, transparent 50%);
        -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
        -webkit-mask-composite: exclude;
        mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
        mask-composite: exclude;
        opacity: 0.5;
        pointer-events: none;
      }

      .container {
        display: flex;
        height: 100%;
        overflow: visible;
        border-radius: ${unsafeCSS(radius['2xl'])};
      }

      /* Responsive layout */
      @media (max-width: 600px) {
        :host {
          width: 100%;
          height: 100%;
          border-radius: 0;
        }

        .container {
          position: relative;
        }

        sio-conversation-selector {
          position: absolute;
          width: 100%;
          height: 100%;
          transition: left 300ms ease, opacity 200ms ease;
        }

        sio-conversation-view {
          position: absolute;
          width: 100%;
          height: 100%;
          transition: left 300ms ease, opacity 200ms ease;
        }

        /* Mobile navigation states */
        .container.show-list sio-conversation-selector {
          left: 0;
          opacity: 1;
        }

        .container.show-list sio-conversation-view {
          left: 100%;
          opacity: 0;
        }

        .container.show-conversation sio-conversation-selector {
          left: -100%;
          opacity: 0;
        }

        .container.show-conversation sio-conversation-view {
          left: 0;
          opacity: 1;
        }
      }

      @media (min-width: 601px) {
        sio-conversation-selector {
          width: 320px;
          flex-shrink: 0;
        }

        sio-conversation-view {
          flex: 1;
        }
      }
    `,
  ];

  public render(): TemplateResult {
    const selectedConversation = this.selectedConversationId
      ? this.conversations.find(c => c.id === this.selectedConversationId)
      : null;

    const conversationData: IConversationData | null = selectedConversation
      ? {
          id: selectedConversation.id,
          title: selectedConversation.title,
          messages: this.messages[selectedConversation.id] || []
        }
      : null;

    const containerClass = this.selectedConversationId ? 'show-conversation' : 'show-list';

    return html`
      <div class="container ${containerClass}">
        <sio-conversation-selector
          .conversations=${this.conversations}
          .selectedConversationId=${this.selectedConversationId}
          @conversation-selected=${this.handleConversationSelected}
        ></sio-conversation-selector>
        
        <sio-conversation-view
          .conversation=${conversationData}
          @back=${this.handleBack}
          @send-message=${this.handleSendMessage}
          @open-image=${this.handleOpenImage}
          @open-file=${this.handleOpenImage}
        ></sio-conversation-view>
      </div>
      
      <sio-image-lightbox></sio-image-lightbox>
    `;
  }

  private handleConversationSelected(event: CustomEvent) {
    const conversation = event.detail.conversation as IConversation;
    this.selectedConversationId = conversation.id;
    
    // Mark conversation as read
    const convIndex = this.conversations.findIndex(c => c.id === conversation.id);
    if (convIndex !== -1) {
      this.conversations[convIndex] = { ...this.conversations[convIndex], unread: false };
      this.conversations = [...this.conversations];
    }
  }

  private handleBack() {
    // For mobile view, go back to conversation list
    this.selectedConversationId = null;
  }

  private handleSendMessage(event: CustomEvent) {
    const message = event.detail.message as IMessage;
    const conversationId = this.selectedConversationId;
    
    if (conversationId) {
      // Add message to the conversation
      if (!this.messages[conversationId]) {
        this.messages[conversationId] = [];
      }
      this.messages[conversationId] = [...this.messages[conversationId], message];
      this.messages = { ...this.messages };
      
      // Update conversation's last message
      const convIndex = this.conversations.findIndex(c => c.id === conversationId);
      if (convIndex !== -1) {
        this.conversations[convIndex] = {
          ...this.conversations[convIndex],
          lastMessage: message.text,
          time: 'Just now'
        };
        // Move conversation to top
        const [conv] = this.conversations.splice(convIndex, 1);
        this.conversations = [conv, ...this.conversations];
      }
      
      // Simulate a response after a delay (remove in production)
      setTimeout(() => {
        const responseMessage: IMessage = {
          id: Date.now().toString(),
          text: 'Thanks for your message! We\'ll get back to you shortly.',
          sender: 'support',
          time: new Date().toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })
        };
        
        this.messages[conversationId] = [...this.messages[conversationId], responseMessage];
        this.messages = { ...this.messages };
      }, 3000);
    }
  }

  private handleOpenImage(event: CustomEvent) {
    const attachment = event.detail.attachment as IAttachment;
    const lightbox = this.shadowRoot?.querySelector('sio-image-lightbox') as SioImageLightbox;
    
    if (lightbox && attachment) {
      const lightboxFile: ILightboxImage = {
        url: attachment.url,
        name: attachment.name,
        size: attachment.size,
        type: attachment.type
      };
      lightbox.open(lightboxFile);
    }
  }
}