'use client';

import React from 'react';
import { QRCodeSVG } from 'qrcode.react';
import { Card, CardContent } from '@/components/ui/Card';
import { Badge } from '@/components/ui/Badge';
import { Dropdown, DropdownItem } from '@/components/ui/Dropdown';
import { formatDate } from '@/lib/utils';

interface QRCodeCardProps {
  qr: {
    id: string;
    title: string;
    type: 'STATIC' | 'DYNAMIC';
    contentType: string;
    content?: any;
    slug: string;
    createdAt: string;
    scans?: number;
    style?: any;
  };
  onEdit: (id: string) => void;
  onDelete: (id: string) => void;
}

export const QRCodeCard: React.FC<QRCodeCardProps> = ({
  qr,
  onEdit,
  onDelete,
}) => {
  // For dynamic QR codes, use the redirect URL for tracking
  // For static QR codes, use the direct URL from content
  const baseUrl = process.env.NEXT_PUBLIC_APP_URL || (typeof window !== 'undefined' ? window.location.origin : 'http://localhost:3050');

  // Get the QR URL based on type
  let qrUrl = '';

  // SIMPLE FIX: For STATIC QR codes, ALWAYS use the direct content
  if (qr.type === 'STATIC') {
    // Extract the actual URL/content based on contentType
    if (qr.contentType === 'URL' && qr.content?.url) {
      qrUrl = qr.content.url;
    } else if (qr.contentType === 'PHONE' && qr.content?.phone) {
      qrUrl = `tel:${qr.content.phone}`;
    } else if (qr.contentType === 'VCARD') {
      // VCARD content needs to be formatted properly
      qrUrl = `BEGIN:VCARD
VERSION:3.0
FN:${qr.content.firstName || ''} ${qr.content.lastName || ''}
N:${qr.content.lastName || ''};${qr.content.firstName || ''};;;
${qr.content.organization ? `ORG:${qr.content.organization}` : ''}
${qr.content.title ? `TITLE:${qr.content.title}` : ''}
${qr.content.email ? `EMAIL:${qr.content.email}` : ''}
${qr.content.phone ? `TEL:${qr.content.phone}` : ''}
END:VCARD`;
    } else if (qr.contentType === 'GEO' && qr.content) {
      const lat = qr.content.latitude || 0;
      const lon = qr.content.longitude || 0;
      const label = qr.content.label ? `?q=${encodeURIComponent(qr.content.label)}` : '';
      qrUrl = `geo:${lat},${lon}${label}`;
    } else if (qr.contentType === 'TEXT' && qr.content?.text) {
      qrUrl = qr.content.text;
    } else if (qr.content?.qrContent) {
      // Fallback to qrContent if it exists
      qrUrl = qr.content.qrContent;
    } else {
      // Last resort fallback
      qrUrl = `${baseUrl}/r/${qr.slug}`;
    }
    console.log(`STATIC QR [${qr.title}]: ${qrUrl}`);
  } else {
    // DYNAMIC QR codes always use redirect for tracking
    qrUrl = `${baseUrl}/r/${qr.slug}`;
    console.log(`DYNAMIC QR [${qr.title}]: ${qrUrl}`);
  }

  const downloadQR = async (format: 'png' | 'svg') => {
    // Use the tight download wrapper
    const container = document.querySelector(`#qr-download-${qr.id}`);
    if (!container) return;

    // Dynamic import of html-to-image
    const { toPng } = await import('html-to-image');

    try {
      if (format === 'png') {
        const dataUrl = await toPng(container as HTMLElement, {
          cacheBust: true,
          pixelRatio: 3,
          backgroundColor: '#ffffff' // White background for clean export
        });
        const link = document.createElement('a');
        link.download = `${qr.title.replace(/\s+/g, '-').toLowerCase()}.png`;
        link.href = dataUrl;
        link.click();
      } else {
        // For SVG, if no frame, export just the QR code SVG for vector quality
        // If frame exists, use toPng as fallback since HTML-to-SVG is complex
        if (qr.style?.frameType && qr.style.frameType !== 'none') {
          // Frame exists - use PNG for full capture
          const dataUrl = await toPng(container as HTMLElement, {
            cacheBust: true,
            pixelRatio: 3,
            backgroundColor: '#ffffff'
          });
          const link = document.createElement('a');
          link.download = `${qr.title.replace(/\s+/g, '-').toLowerCase()}.png`;
          link.href = dataUrl;
          link.click();
        } else {
          // No frame - export clean SVG from the svg wrapper
          const svgContainer = document.querySelector(`#qr-svg-${qr.id}`);
          const svg = svgContainer?.querySelector('svg');
          if (svg) {
            let svgData = new XMLSerializer().serializeToString(svg);

            if (qr.style?.cornerStyle === 'rounded') {
              const width = svg.getAttribute('width') || '96';
              const height = svg.getAttribute('height') || '96';
              const borderRadius = 10;
              svgData = `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}" viewBox="0 0 ${width} ${height}">
                <defs>
                  <clipPath id="rounded-corners-${qr.id}">
                    <rect x="0" y="0" width="${width}" height="${height}" rx="${borderRadius}" ry="${borderRadius}"/>
                  </clipPath>
                </defs>
                <g clip-path="url(#rounded-corners-${qr.id})">
                  ${svgData}
                </g>
              </svg>`;
            }

            const blob = new Blob([svgData], { type: 'image/svg+xml' });
            const url = URL.createObjectURL(blob);
            const a = document.createElement('a');
            a.href = url;
            a.download = `${qr.title.replace(/\s+/g, '-').toLowerCase()}.svg`;
            a.click();
            URL.revokeObjectURL(url);
          }
        }
      }
    } catch (err) {
      console.error('Download failed:', err);
    }
  };

  return (
    <Card hover>
      <CardContent className="p-4">
        <div className="flex items-start justify-between mb-3">
          <div className="flex-1">
            <h3 className="font-semibold text-gray-900 mb-1">{qr.title}</h3>
            <div className="flex items-center space-x-2">
              <Badge variant={qr.type === 'DYNAMIC' ? 'info' : 'default'}>
                {qr.type}
              </Badge>
            </div>
          </div>

          <Dropdown
            align="right"
            trigger={
              <button className="p-1 hover:bg-gray-100 rounded">
                <svg className="w-5 h-5 text-gray-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 5v.01M12 12v.01M12 19v.01M12 6a1 1 0 110-2 1 1 0 010 2zm0 7a1 1 0 110-2 1 1 0 010 2zm0 7a1 1 0 110-2 1 1 0 010 2z" />
                </svg>
              </button>
            }
          >
            <DropdownItem onClick={() => window.location.href = `/qr/${qr.id}`}>View Details</DropdownItem>
            <DropdownItem onClick={() => downloadQR('png')}>Download PNG</DropdownItem>
            <DropdownItem onClick={() => downloadQR('svg')}>Download SVG</DropdownItem>
            {qr.type === 'DYNAMIC' && (
              <DropdownItem onClick={() => onEdit(qr.id)}>Edit</DropdownItem>
            )}
            <DropdownItem onClick={() => onDelete(qr.id)} className="text-red-600">
              Delete
            </DropdownItem>
          </Dropdown>
        </div>

        <div className="flex flex-col items-center justify-center bg-gray-50 rounded-lg p-4 mb-3">
          {/* Download wrapper - tightly wraps content */}
          <div id={`qr-download-${qr.id}`} className="inline-flex flex-col items-center bg-white p-4 rounded-xl">
            {/* Frame Label */}
            {qr.style?.frameType && qr.style.frameType !== 'none' && (
              <div
                className="mb-3 px-4 py-1.5 rounded-full font-bold text-xs tracking-widest uppercase shadow-sm text-white"
                style={{ backgroundColor: qr.style?.foregroundColor || '#000000' }}
              >
                {qr.style.frameType === 'scanme' ? 'Scan Me' :
                  qr.style.frameType === 'website' ? 'Website' :
                    qr.style.frameType === 'visit' ? 'Visit' :
                      qr.style.frameType === 'callme' ? 'Call Me' :
                        qr.style.frameType === 'call' ? 'Call' :
                          qr.style.frameType === 'findus' ? 'Find Us' :
                            qr.style.frameType === 'navigate' ? 'Navigate' :
                              qr.style.frameType === 'contact' ? 'Contact' :
                                qr.style.frameType === 'save' ? 'Save' :
                                  qr.style.frameType === 'textme' ? 'Text Me' :
                                    qr.style.frameType === 'message' ? 'Message' :
                                      qr.style.frameType === 'chatme' ? 'Chat Me' :
                                        qr.style.frameType === 'whatsapp' ? 'WhatsApp' :
                                          qr.style.frameType === 'read' ? 'Read' :
                                            qr.style.frameType === 'info' ? 'Info' :
                                              qr.style.frameType.charAt(0).toUpperCase() + qr.style.frameType.slice(1)}
              </div>
            )}
            <div id={`qr-svg-${qr.id}`} className={qr.style?.cornerStyle === 'rounded' ? 'rounded-lg overflow-hidden' : ''}>
              <QRCodeSVG
                value={qrUrl}
                size={96}
                fgColor={qr.style?.foregroundColor || '#000000'}
                bgColor={qr.style?.backgroundColor || '#FFFFFF'}
                level="H"
                imageSettings={qr.style?.imageSettings ? {
                  src: qr.style.imageSettings.src,
                  height: qr.style.imageSettings.height * (96 / 200), // Scale logo for smaller QR
                  width: qr.style.imageSettings.width * (96 / 200),
                  excavate: qr.style.imageSettings.excavate,
                } : undefined}
              />
            </div>
          </div>
        </div>

        <div className="space-y-2 text-sm">
          <div className="flex items-center justify-between">
            <span className="text-gray-500">Type:</span>
            <span className="text-gray-900">{qr.contentType}</span>
          </div>
          {qr.type === 'DYNAMIC' && (
            <div className="flex items-center justify-between">
              <span className="text-gray-500">Scans:</span>
              <span className="text-gray-900">{qr.scans || 0}</span>
            </div>
          )}
          <div className="flex items-center justify-between">
            <span className="text-gray-500">Created:</span>
            <span className="text-gray-900">{formatDate(qr.createdAt)}</span>
          </div>
          {qr.type === 'DYNAMIC' && (
            <div className="pt-2 border-t">
              <p className="text-xs text-gray-500">
                📊 Dynamic QR: Tracks scans via {baseUrl}/r/{qr.slug}
              </p>
            </div>
          )}
          {/* Feedback Button - only for FEEDBACK type */}
          {qr.contentType === 'FEEDBACK' && (
            <button
              onClick={() => window.location.href = `/qr/${qr.id}/feedback`}
              className="w-full mt-3 py-2 px-3 bg-amber-50 hover:bg-amber-100 text-amber-700 rounded-lg text-sm font-medium flex items-center justify-center gap-2 transition-colors"
            >
              ⭐ View Customer Feedback
            </button>
          )}
        </div>
      </CardContent>
    </Card>
  );
};