/**
 * "URL 입력으로 시작하기" 진단 신청 모달.
 *
 * - 병원 URL(필수) + 회신 연락처(필수) + 상호(선택) → Supabase discovery_leads insert
 * - RLS는 anon insert만 허용 (조회는 service_role 전용)
 * - 저장 실패 시 성공한 척하지 않고 mailto 폴백을 보여준다 (정직성 규약)
 */
import { useEffect, useState } from 'react';
import { AnimatePresence, motion } from 'motion/react';
import { ArrowRight } from 'lucide-react';
import { supabase } from '../../lib/supabase';
import { DISCOVERY_CONTACT_EMAIL } from './discoveryContact';

interface DiscoveryLeadModalProps {
  open: boolean;
  onClose: () => void;
}

type SubmitState = 'idle' | 'submitting' | 'done' | 'error';

/** 스킴이 없으면 https://를 붙이고, 호스트에 점이 있어야 유효로 본다 */
const normalizeUrl = (raw: string): string | null => {
  const trimmed = raw.trim();
  if (!trimmed) return null;
  const withScheme = /^https?:\/\//i.test(trimmed) ? trimmed : `https://${trimmed}`;
  try {
    const u = new URL(withScheme);
    if (!u.hostname.includes('.')) return null;
    return u.toString();
  } catch {
    return null;
  }
};

export default function DiscoveryLeadModal({ open, onClose }: DiscoveryLeadModalProps) {
  const [url, setUrl] = useState('');
  const [clinicName, setClinicName] = useState('');
  const [contact, setContact] = useState('');
  const [state, setState] = useState<SubmitState>('idle');
  const [fieldError, setFieldError] = useState<string | null>(null);

  useEffect(() => {
    if (!open) return;
    const onKey = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose();
    };
    window.addEventListener('keydown', onKey);
    return () => window.removeEventListener('keydown', onKey);
  }, [open, onClose]);

  // @types/react 미설치 프로젝트 방침이라 React.FormEvent 대신 구조적 타입 사용
  const handleSubmit = async (e: { preventDefault: () => void }) => {
    e.preventDefault();
    const normalized = normalizeUrl(url);
    if (!normalized) {
      setFieldError('URL 형식을 확인해 주세요. 예: viewclinic.com');
      return;
    }
    if (!contact.trim()) {
      setFieldError('진단 결과를 받을 이메일 또는 전화번호를 입력해 주세요.');
      return;
    }
    setFieldError(null);
    setState('submitting');
    // discovery_leads 는 anon 조회 정책이 없어 insert 반환값을 읽지 않는다.
    const { error } = await supabase.from('discovery_leads').insert({
      url: normalized,
      clinic_name: clinicName.trim() || null,
      contact: contact.trim(),
      source: 'discovery_landing',
    });
    // 서포터즈 자동 빌드 큐(supporter_builds, status=queued). 워커(workers/supporters-build/poll.mjs)가 집어 간다.
    // clinic_id 는 홈페이지 호스트에서 만든다 (www.k-wonjin.co.kr → k-wonjin). 큐 삽입이 실패해도 신청 자체는 접수된 것으로 본다.
    if (!error) {
      const host = (() => { try { return new URL(normalized).host; } catch { return normalized; } })();
      const clinicId = host.replace(/^www\./, '').split('.')[0].toLowerCase().replace(/[^a-z0-9-]/g, '') || 'clinic';
      await supabase.from('supporter_builds').insert({ clinic_id: clinicId, url: normalized, status: 'queued', clinic_name: clinicName.trim() || null });
    }
    setState(error ? 'error' : 'done');
  };

  const fallbackMailto = () => {
    const body = `병원/업체 URL: ${url}\n상호: ${clinicName || '-'}\n회신 연락처: ${contact}`;
    return `mailto:${DISCOVERY_CONTACT_EMAIL}?subject=${encodeURIComponent(
      '[INFINITH AI Discovery] 무료 진단 신청',
    )}&body=${encodeURIComponent(body)}`;
  };

  return (
    <AnimatePresence>
      {open && (
        <motion.div
          initial={{ opacity: 0 }}
          animate={{ opacity: 1 }}
          exit={{ opacity: 0 }}
          className="on-dark fixed inset-0 z-50 flex items-center justify-center px-6 bg-[#0A1128]/60 backdrop-blur-sm"
          onClick={onClose}
          data-no-print
        >
          <motion.div
            initial={{ opacity: 0, y: 24, scale: 0.98 }}
            animate={{ opacity: 1, y: 0, scale: 1 }}
            exit={{ opacity: 0, y: 24, scale: 0.98 }}
            transition={{ duration: 0.25 }}
            className="on-light relative w-full max-w-md bg-white rounded-2xl shadow-2xl p-8"
            onClick={(e) => e.stopPropagation()}
            role="dialog"
            aria-modal="true"
            aria-label="무료 AEO/GEO 진단 신청"
          >
            {/* 닫기 (커스텀 filled SVG — 라인 아이콘 금지 규칙) */}
            <button
              type="button"
              onClick={onClose}
              aria-label="닫기"
              className="absolute top-4 right-4 w-8 h-8 flex items-center justify-center rounded-full bg-slate-100 hover:bg-slate-200 transition-colors"
            >
              <svg width="12" height="12" viewBox="0 0 12 12" aria-hidden="true">
                <path
                  d="M2.3 0.9 6 4.6 9.7 0.9a1 1 0 0 1 1.4 1.4L7.4 6l3.7 3.7a1 1 0 0 1-1.4 1.4L6 7.4 2.3 11.1a1 1 0 0 1-1.4-1.4L4.6 6 0.9 2.3A1 1 0 0 1 2.3 0.9Z"
                  fill="#0A1128"
                />
              </svg>
            </button>

            {state === 'done' ? (
              <div className="flex flex-col items-center text-center py-4">
                <div className="w-14 h-14 rounded-full bg-[#F3F0FF] flex items-center justify-center mb-5">
                  <svg width="24" height="24" viewBox="0 0 24 24" aria-hidden="true">
                    <path
                      d="M9.6 16.2 4.8 11.4a1.2 1.2 0 0 1 1.7-1.7l3.1 3.1 7.9-7.9a1.2 1.2 0 0 1 1.7 1.7l-8.8 8.8a1.2 1.2 0 0 1-1.7 0Z"
                      fill="#6C5CE7"
                    />
                  </svg>
                </div>
                <h3 className="text-lg font-bold text-primary-900 mb-2">신청이 접수되었습니다</h3>
                <p className="ui-body mb-6">
                  입력하신 URL을 실측 진단한 뒤, 남겨주신 연락처로 리포트를 안내드립니다.
                  <br />
                  문의: {DISCOVERY_CONTACT_EMAIL}
                </p>
                <button
                  type="button"
                  onClick={onClose}
                  className="inline-flex items-center h-11 px-8 bg-gradient-to-r from-[#4F1DA1] to-[#021341] rounded-full text-sm font-bold text-white hover:opacity-90 transition-opacity"
                >
                  확인
                </button>
              </div>
            ) : (
              <form onSubmit={handleSubmit}>
                <h3 className="text-xl font-bold text-primary-900 mb-1.5">URL 입력으로 시작하기</h3>
                <p className="ui-body mb-6">
                  병원 홈페이지 URL만 입력하면 AI 검색 인용 가능성을 실측 진단합니다. 진단은
                  무료입니다.
                </p>

                <label className="block text-xs font-semibold text-slate-500 mb-1.5">
                  병원/업체 홈페이지 URL <span className="text-[#7C3A4B]">*</span>
                </label>
                <input
                  type="text"
                  value={url}
                  onChange={(e) => setUrl(e.target.value)}
                  placeholder="viewclinic.com"
                  autoFocus
                  className="w-full h-12 px-4 mb-4 rounded-xl border border-slate-200 bg-[linear-gradient(to_right,#fff3eb,#e4cfff,#f5f9ff)] text-[15px] text-primary-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-[#6C5CE7]/40"
                />

                <label className="block text-xs font-semibold text-slate-500 mb-1.5">
                  상호 <span className="text-slate-400 font-normal">(선택)</span>
                </label>
                <input
                  type="text"
                  value={clinicName}
                  onChange={(e) => setClinicName(e.target.value)}
                  placeholder="뷰성형외과"
                  className="on-light w-full h-12 px-4 mb-4 rounded-xl border border-slate-200 bg-white text-[15px] text-primary-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-[#6C5CE7]/40"
                />

                <label className="block text-xs font-semibold text-slate-500 mb-1.5">
                  진단 결과 받을 이메일/전화 <span className="text-[#7C3A4B]">*</span>
                </label>
                <input
                  type="text"
                  value={contact}
                  onChange={(e) => setContact(e.target.value)}
                  placeholder="marketing@clinic.com"
                  className="on-light w-full h-12 px-4 mb-4 rounded-xl border border-slate-200 bg-white text-[15px] text-primary-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-[#6C5CE7]/40"
                />

                {fieldError && (
                  <p className="text-[13px] text-[#7C3A4B] bg-[#FFF0F0] border border-[#F5D5DC] rounded-lg px-3.5 py-2.5 mb-4">
                    {fieldError}
                  </p>
                )}

                {state === 'error' && (
                  <p className="text-[13px] leading-relaxed text-[#7C5C3A] bg-[#FFF6ED] border border-[#F5E0C5] rounded-lg px-3.5 py-2.5 mb-4">
                    저장에 실패했습니다. 아래 이메일로 직접 신청해 주세요.
                    <br />
                    <a href={fallbackMailto()} className="font-semibold underline">
                      {DISCOVERY_CONTACT_EMAIL}로 신청 메일 보내기
                    </a>
                  </p>
                )}

                <button
                  type="submit"
                  disabled={state === 'submitting'}
                  className="w-full inline-flex items-center justify-center gap-2 h-[52px] bg-gradient-to-r from-[#4F1DA1] to-[#021341] rounded-full text-base font-bold text-white hover:opacity-90 transition-opacity disabled:opacity-60"
                >
                  {state === 'submitting' ? '접수 중…' : '무료 진단 신청'}
                  {state !== 'submitting' && <ArrowRight className="w-5 h-5" />}
                </button>

                <p className="text-xs text-slate-400 text-center mt-4">
                  입력 정보는 진단 회신 용도로만 사용합니다.
                </p>
              </form>
            )}
          </motion.div>
        </motion.div>
      )}
    </AnimatePresence>
  );
}