'use client';

import dynamic from 'next/dynamic';
import Link from 'next/link';
import * as React from 'react';
import { AddToCompareButton } from '@/components/comparison/add-to-compare-button';
import { ImageGallery } from '@/components/listings/image-gallery';
import { InquiryModal } from '@/components/listings/inquiry-modal';
import { PriceHistoryChart } from '@/components/listings/price-history-chart';
import { SocialShare } from '@/components/listings/social-share';
import { Badge } from '@/components/ui/badge';
import { Button } from '@/components/ui/button';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { AiEstimateButton } from '@/components/valuation/ai-estimate-button';
import { formatPrice, formatPricePerM2 } from '@/lib/currency';
import type { ListingDetail, NeighborhoodScoreResult, PriceHistoryItem } from '@/lib/listings-api';
import { listingsApi } from '@/lib/listings-api';
import { PROPERTY_TYPES, DIRECTIONS, TRANSACTION_TYPES } from '@/lib/validations/listings';

const NeighborhoodRadarChart = dynamic(
  () => import('@/components/neighborhood').then((m) => m.NeighborhoodRadarChart),
  { ssr: false },
);

const ListingMap = dynamic(
  () => import('@/components/map/listing-map').then((mod) => mod.ListingMap),
  {
    ssr: false,
    loading: () => (
      <div className="flex h-[300px] items-center justify-center rounded-lg bg-muted">
        <p className="text-sm text-muted-foreground">{'\u0110ang t\u1ea3i b\u1ea3n \u0111\u1ed3...'}</p>
      </div>
    ),
  },
);

function getLabel(list: readonly { value: string; label: string }[], value: string | null) {
  if (!value) return null;
  return list.find((item) => item.value === value)?.label ?? value;
}

interface ListingDetailClientProps {
  listing: ListingDetail;
}

function mapScoreToCategories(result: NeighborhoodScoreResult) {
  return [
    { category: 'education', label: 'Giáo dục', score: result.educationScore },
    { category: 'healthcare', label: 'Y tế', score: result.healthcareScore },
    { category: 'transport', label: 'Giao thông', score: result.transportScore },
    { category: 'shopping', label: 'Mua sắm', score: result.shoppingScore },
    { category: 'environment', label: 'Môi trường', score: result.greeneryScore },
    { category: 'safety', label: 'An ninh', score: result.safetyScore },
  ];
}

export function ListingDetailClient({ listing }: ListingDetailClientProps) {
  const { property, seller, agent } = listing;
  const transactionLabel = getLabel(TRANSACTION_TYPES, listing.transactionType);
  const propertyTypeLabel = getLabel(PROPERTY_TYPES, property.propertyType);
  const [inquiryOpen, setInquiryOpen] = React.useState(false);
  const [neighborhoodScore, setNeighborhoodScore] = React.useState<NeighborhoodScoreResult | null>(null);
  const [priceHistory, setPriceHistory] = React.useState<PriceHistoryItem[]>([]);

  React.useEffect(() => {
    if (!property.district || !property.city) return;
    listingsApi
      .getNeighborhoodScore(property.district, property.city)
      .then(setNeighborhoodScore)
      .catch(() => {/* silently ignore — section simply won't render */});
  }, [property.district, property.city]);

  React.useEffect(() => {
    listingsApi
      .getPriceHistory(listing.id)
      .then(setPriceHistory)
      .catch(() => {/* silently ignore */});
  }, [listing.id]);

  return (
    <div className="mx-auto max-w-6xl px-4 py-6">
      {/* Breadcrumb */}
      <nav className="mb-4 flex items-center gap-1.5 text-sm text-muted-foreground">
        <Link href="/" className="hover:text-foreground">Trang ch\u1ee7</Link>
        <span>/</span>
        <Link href="/search" className="hover:text-foreground">T\u00ecm ki\u1ebfm</Link>
        <span>/</span>
        <span className="truncate text-foreground">{property.title}</span>
      </nav>

      {/* Header */}
      <div className="mb-6 flex flex-col gap-4 sm:flex-row sm:items-start sm:justify-between">
        <div className="min-w-0 flex-1">
          <div className="mb-2 flex flex-wrap items-center gap-2">
            {transactionLabel && (
              <Badge variant={listing.transactionType === 'SALE' ? 'default' : 'secondary'}>
                {transactionLabel}
              </Badge>
            )}
            {propertyTypeLabel && <Badge variant="outline">{propertyTypeLabel}</Badge>}
          </div>
          <h1 className="text-2xl font-bold md:text-3xl">{property.title}</h1>
          <p className="mt-1 flex items-center gap-1 text-muted-foreground">
            <svg className="h-4 w-4 shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z" />
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 11a3 3 0 11-6 0 3 3 0 016 0z" />
            </svg>
            {property.address}, {property.ward}, {property.district}, {property.city}
          </p>
        </div>
        <div className="shrink-0 text-right">
          <p className="text-2xl font-bold text-primary md:text-3xl">{formatPrice(listing.priceVND)} VND</p>
          {listing.pricePerM2 != null && (
            <p className="text-sm text-muted-foreground">
              ~{formatPricePerM2(listing.pricePerM2)}
            </p>
          )}
          {listing.rentPriceMonthly && (
            <p className="text-sm text-muted-foreground">
              Thu\u00ea: {formatPrice(listing.rentPriceMonthly)}/th\u00e1ng
            </p>
          )}
          <div className="mt-3">
            <AddToCompareButton listingId={listing.id} />
          </div>
        </div>
      </div>

      {/* Image gallery */}
      <ImageGallery media={property.media} />

      {/* Quick specs bar */}
      <div className="my-6 flex flex-wrap gap-4 rounded-lg border bg-card p-4">
        <QuickStat icon="area" label="Di\u1ec7n t\u00edch" value={`${property.areaM2} m\u00B2`} />
        {property.bedrooms != null && (
          <QuickStat icon="bed" label="Ph\u00f2ng ng\u1ee7" value={`${property.bedrooms}`} />
        )}
        {property.bathrooms != null && (
          <QuickStat icon="bath" label="Phòng tắm" value={`${property.bathrooms}`} />
        )}
        {property.floors != null && (
          <QuickStat icon="floors" label="Số tầng" value={`${property.floors}`} />
        )}
        {property.direction && (
          <QuickStat icon="compass" label="Hướng" value={getLabel(DIRECTIONS, property.direction) || ''} />
        )}
      </div>

      <div className="grid gap-6 lg:grid-cols-3">
        {/* Main content */}
        <div className="space-y-6 lg:col-span-2">
          {/* Description */}
          <Card>
            <CardHeader>
              <CardTitle>Mô tả</CardTitle>
            </CardHeader>
            <CardContent>
              <p className="whitespace-pre-wrap text-sm leading-relaxed">{property.description}</p>
            </CardContent>
          </Card>

          {/* Details */}
          <Card>
            <CardHeader>
              <CardTitle>Thông tin chi tiết</CardTitle>
            </CardHeader>
            <CardContent>
              <div className="grid grid-cols-2 gap-4 sm:grid-cols-3">
                <InfoItem label="Loại BĐS" value={propertyTypeLabel || '---'} />
                <InfoItem label="Diện tích" value={`${property.areaM2} m\u00B2`} />
                <InfoItem label="Phòng ngủ" value={property.bedrooms != null ? `${property.bedrooms}` : '---'} />
                <InfoItem label="Phòng tắm" value={property.bathrooms != null ? `${property.bathrooms}` : '---'} />
                <InfoItem label="Số tầng" value={property.floors != null ? `${property.floors}` : '---'} />
                <InfoItem label="Hướng" value={getLabel(DIRECTIONS, property.direction) || '---'} />
                <InfoItem label="Năm xây" value={property.yearBuilt ? `${property.yearBuilt}` : '---'} />
                <InfoItem label="Pháp lý" value={property.legalStatus || '---'} />
                <InfoItem label="Dự án" value={property.projectName || '---'} />
              </div>
            </CardContent>
          </Card>

          {/* Amenities */}
          {property.amenities && property.amenities.length > 0 && (
            <Card>
              <CardHeader>
                <CardTitle>Tiện ích</CardTitle>
              </CardHeader>
              <CardContent>
                <div className="flex flex-wrap gap-2">
                  {property.amenities.map((a) => (
                    <Badge key={a} variant="secondary">
                      {a}
                    </Badge>
                  ))}
                </div>
              </CardContent>
            </Card>
          )}

          {/* Map */}
          <Card>
            <CardHeader>
              <CardTitle>Vị trí trên bản đồ</CardTitle>
            </CardHeader>
            <CardContent>
              <ListingMap
                listings={[listing]}
                className="h-[300px]"
              />
            </CardContent>
          </Card>

          {/* Price History Chart */}
          {priceHistory.length > 0 && (
            <Card>
              <CardHeader>
                <CardTitle>Lịch sử giá</CardTitle>
              </CardHeader>
              <CardContent>
                <PriceHistoryChart data={priceHistory} />
              </CardContent>
            </Card>
          )}

          {/* Neighborhood Score Radar Chart */}
          <Card>
            <CardHeader>
              <CardTitle>Đánh giá khu vực</CardTitle>
            </CardHeader>
            <CardContent>
              {neighborhoodScore ? (
                <>
                  <div className="mb-3 flex items-center gap-2">
                    <Badge
                      variant={
                        neighborhoodScore.totalScore > 7
                          ? 'success'
                          : neighborhoodScore.totalScore >= 5
                            ? 'warning'
                            : 'destructive'
                      }
                      className="px-3 py-1 text-lg font-bold"
                    >
                      {neighborhoodScore.totalScore.toFixed(1)}/10
                    </Badge>
                    <span className="text-sm text-muted-foreground">Điểm tổng khu vực</span>
                  </div>
                  <NeighborhoodRadarChart
                    categories={mapScoreToCategories(neighborhoodScore)}
                    height={300}
                  />
                </>
              ) : (
                <div className="flex h-[200px] items-center justify-center rounded-lg bg-muted/50">
                  <p className="text-sm text-muted-foreground">
                    Chưa có dữ liệu đánh giá khu vực này
                  </p>
                </div>
              )}
            </CardContent>
          </Card>
        </div>

        {/* Sidebar */}
        <div className="space-y-6">
          {/* Contact card */}
          <Card className="lg:sticky lg:top-20">
            <CardHeader>
              <CardTitle>Liên hệ</CardTitle>
            </CardHeader>
            <CardContent className="space-y-4">
              <div className="flex items-center gap-3">
                <div className="flex h-10 w-10 items-center justify-center rounded-full bg-primary/10 text-primary">
                  <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
                  </svg>
                </div>
                <div>
                  <p className="font-medium">{seller.fullName}</p>
                  <p className="text-sm text-muted-foreground">{seller.phone}</p>
                </div>
              </div>

              <a href={`tel:${seller.phone}`}>
                <Button className="w-full gap-2">
                  <svg className="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 5a2 2 0 012-2h3.28a1 1 0 01.948.684l1.498 4.493a1 1 0 01-.502 1.21l-2.257 1.13a11.042 11.042 0 005.516 5.516l1.13-2.257a1 1 0 011.21-.502l4.493 1.498a1 1 0 01.684.949V19a2 2 0 01-2 2h-1C9.716 21 3 14.284 3 6V5z" />
                  </svg>
                  Gọi ngay
                </Button>
              </a>
              <Button variant="outline" className="w-full gap-2" onClick={() => setInquiryOpen(true)}>
                <svg className="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z" />
                </svg>
                Nhắn tin
              </Button>

              <InquiryModal
                open={inquiryOpen}
                onOpenChange={setInquiryOpen}
                listingId={listing.id}
                listingTitle={property.title}
                sellerName={seller.fullName}
              />

              {agent && (
                <div className="border-t pt-3">
                  <p className="text-xs text-muted-foreground">Môi giới</p>
                  {agent.agency && <p className="text-sm font-medium">{agent.agency}</p>}
                  {listing.commissionPct != null && (
                    <p className="text-xs text-muted-foreground">Hoa hồng: {listing.commissionPct}%</p>
                  )}
                </div>
              )}
            </CardContent>
          </Card>

          {/* Social sharing + QR code */}
          <Card>
            <CardContent className="pt-6">
              <SocialShare
                listingId={listing.id}
                listingTitle={property.title}
              />
            </CardContent>
          </Card>

          {/* AI Estimate */}
          <AiEstimateButton listingId={listing.id} />

          {/* Stats */}
          <Card>
            <CardContent className="pt-6">
              <div className="grid grid-cols-3 gap-4 text-center">
                <div>
                  <p className="text-lg font-bold">{listing.viewCount}</p>
                  <p className="text-xs text-muted-foreground">Lượt xem</p>
                </div>
                <div>
                  <p className="text-lg font-bold">{listing.saveCount}</p>
                  <p className="text-xs text-muted-foreground">Lượt lưu</p>
                </div>
                <div>
                  <p className="text-lg font-bold">{listing.inquiryCount}</p>
                  <p className="text-xs text-muted-foreground">Liên hệ</p>
                </div>
              </div>
              {listing.publishedAt && (
                <p className="mt-3 border-t pt-3 text-center text-xs text-muted-foreground">
                  Đăng ngày {new Date(listing.publishedAt).toLocaleDateString('vi-VN')}
                </p>
              )}
            </CardContent>
          </Card>
        </div>
      </div>
    </div>
  );
}

function QuickStat({ icon, label, value }: { icon: string; label: string; value: string }) {
  const icons: Record<string, React.ReactNode> = {
    area: (
      <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M4 8V4m0 0h4M4 4l5 5m11-1V4m0 0h-4m4 0l-5 5M4 16v4m0 0h4m-4 0l5-5m11 5l-5-5m5 5v-4m0 4h-4" />
      </svg>
    ),
    bed: (
      <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M3 7v11m0-7h18M3 18h18M6 14h.01M6 10a2 2 0 012-2h8a2 2 0 012 2v0H6z" />
      </svg>
    ),
    bath: (
      <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M4 12h16M4 12a2 2 0 00-2 2v2a4 4 0 004 4h12a4 4 0 004-4v-2a2 2 0 00-2-2M4 12V7a3 3 0 013-3h1" />
      </svg>
    ),
    floors: (
      <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4" />
      </svg>
    ),
    compass: (
      <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M9 9l3 3m0 0l3-3m-3 3V6m0 6l-3 3m3-3l3 3m-3-3v6" />
      </svg>
    ),
  };

  return (
    <div className="flex items-center gap-2">
      <div className="text-muted-foreground">{icons[icon]}</div>
      <div>
        <p className="text-xs text-muted-foreground">{label}</p>
        <p className="text-sm font-semibold">{value}</p>
      </div>
    </div>
  );
}

function InfoItem({ label, value }: { label: string; value: string }) {
  return (
    <div>
      <p className="text-xs text-muted-foreground">{label}</p>
      <p className="font-medium">{value}</p>
    </div>
  );
}