import 'package:flutter/material.dart';
import 'package:friendly_map/modules/app/app.dart';
import 'package:friendly_map/modules/core/core.dart';
import 'package:friendly_map/modules/storage/storage.dart';

import '../app_scope.dart';
import '../theme.dart';
import '../widgets/async_view.dart';
import '../widgets/career_panel.dart';
import '../widgets/common.dart';
import '../widgets/labels.dart';
import '../widgets/person_summary.dart';
import '../widgets/relate_sheet.dart';
import 'chat_room_screen.dart';
import 'person_facts_screen.dart';
import 'infer_screen.dart';

class _PersonData {
  const _PersonData(this.person, this.cards, this.links, this.labels, this.info);
  final Person? person;
  final List<ReceivedCard> cards;
  final List<Link> links;
  final Map<String, String> labels;
  final PersonInfo info;
}

/// 사람 상세: 받은 명함들, 연결 고리, "어디서 봤지?"로 가는 길.
class PersonScreen extends StatelessWidget {
  const PersonScreen({super.key, required this.personId});

  final String personId;

  Future<_PersonData> _load(FriendlyApp app) async => _PersonData(
        await app.friends.person(personId),
        await app.network.receivedCards(personId),
        await app.network.links(personId),
        await fieldLabels(app),
        await PersonInfo.load(app, personId),
      );

  Future<void> _chat(BuildContext context, String kind) async {
    final app = AppScope.of(context).app;
    final room = await app.chats.openDirect(personId, kind);
    if (!context.mounted) return;
    if (room == null) {
      showNote(context, '${CardKinds.label(kind)} 대화는 ${CardKinds.label(kind)} 명함을 서로 공유한 뒤에 할 수 있어요.');
      return;
    }
    pushPage(context, ChatRoomScreen(roomId: room.id));
  }

  Future<void> _call(BuildContext context, bool sms) async {
    final app = AppScope.of(context).app;
    final ok = sms ? await app.calls.sms(personId) : await app.calls.call(personId);
    if (!ok && context.mounted) showNote(context, '이 번호로는 ${sms ? '문자를' : '전화를'} 걸 수 없어요.');
  }

  @override
  Widget build(BuildContext context) {
    return AsyncView<_PersonData>(
      load: _load,
      builder: (context, d) {
        final p = d.person;
        if (p == null) return Scaffold(appBar: AppBar(), body: const EmptyNote('찾을 수 없는 사람이에요.'));
        return Scaffold(
          appBar: AppBar(title: Text(p.name), actions: [
            IconButton(tooltip: '관계 정하기', onPressed: () => showRelateSheet(context, p.id, p.name), icon: const Icon(Icons.hub_outlined)),
            IconButton(
              tooltip: '정보 고치기',
              onPressed: () => pushPage(context, PersonFactsScreen(personId: p.id)),
              icon: const Icon(Icons.edit_outlined),
            ),
          ]),
          body: ListView(padding: const EdgeInsets.only(bottom: 32), children: [
            if (d.info.markDeceased) DeceasedBanner(d.info.facts),
            CareerNoticesPanel(personId: p.id),
            Padding(
              padding: const EdgeInsets.all(16),
              child: Row(children: [
                Avatar(p.name, size: 56),
                const SizedBox(width: 14),
                Expanded(
                  child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
                    Text(p.name, style: const TextStyle(fontSize: 20, fontWeight: FontWeight.w700)),
                    const SizedBox(height: 2),
                    if (d.info.reachable) Text(p.phone, style: const TextStyle(color: Pal.muted)),
                    if (p.publicKey == null && d.info.reachable) const Text('아직 수락 전이에요', style: TextStyle(color: Pal.accent, fontSize: 12)),
                  ]),
                ),
              ]),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16),
              child: Row(children: [
                Expanded(
                  child: FilledButton.icon(
                    onPressed: () => _chat(context, CardKinds.personal),
                    icon: const Icon(Icons.chat_bubble_outline),
                    label: const Text('대화'),
                  ),
                ),
                const SizedBox(width: 10),
                Expanded(
                  child: OutlinedButton.icon(
                    onPressed: () => pushPage(context, InferScreen(personId: p.id)),
                    icon: const Icon(Icons.travel_explore),
                    label: const Text('어디서 봤지?'),
                  ),
                ),
              ]),
            ),
            if (d.info.reachable && d.info.canCall)
              Padding(
                padding: const EdgeInsets.fromLTRB(16, 10, 16, 0),
                child: Row(children: [
                  Expanded(
                    child: FilledButton.tonalIcon(
                      onPressed: () => _call(context, false),
                      icon: const Icon(Icons.call),
                      label: const Text('전화'),
                    ),
                  ),
                  const SizedBox(width: 10),
                  Expanded(
                    child: FilledButton.tonalIcon(
                      onPressed: () => _call(context, true),
                      icon: const Icon(Icons.sms_outlined),
                      label: const Text('문자'),
                    ),
                  ),
                ]),
              ),
            const SizedBox(height: 10),
            PlacesPanel(personId: p.id, name: p.name),
            RelationPanel(d.info.relations, onEdit: () => pushPage(context, PersonFactsScreen(personId: p.id))),
            CallPanel(d.info),
            EventsPanel(d.info.events),
            if (d.links.isNotEmpty) ...[
              const SectionHeader('연결 고리'),
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 16),
                child: Wrap(spacing: 8, runSpacing: 8, children: [
                  for (final l in d.links)
                    Chip(label: Text(l.detail.isEmpty ? l.relation : '${l.relation} · ${l.detail}')),
                ]),
              ),
            ],
            const SectionHeader('받은 명함'),
            if (d.cards.isEmpty) const EmptyNote('받은 명함이 아직 없어요.'),
            for (final c in d.cards) _ReceivedCardTile(c, d.labels),
            const SectionHeader('이 사람과 대화하기'),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16),
              child: Wrap(spacing: 8, runSpacing: 8, children: [
                for (final k in CardKinds.all.where((k) => k != CardKinds.personal))
                  ActionChip(label: Text('${CardKinds.label(k)} 대화'), onPressed: () => _chat(context, k)),
              ]),
            ),
          ]),
        );
      },
    );
  }
}

class _ReceivedCardTile extends StatelessWidget {
  const _ReceivedCardTile(this.c, this.labels);

  final ReceivedCard c;
  final Map<String, String> labels;

  @override
  Widget build(BuildContext context) {
    final lines = filledFields(decodeFields(c.fieldsJson), labels);
    return Panel(
      onLongPress: () async {
        final ok = await askConfirm(context, '이 명함을 지울까요?', '내 기기에서만 지워져요. 상대의 명함은 그대로예요.', ok: '지우기');
        if (ok && context.mounted) await AppScope.of(context).app.network.deleteReceivedCard(c.id);
      },
      child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
        Row(children: [
          KindChip(c.kind, CardKinds.label(c.kind)),
          const Spacer(),
          Text(shortTime(c.updatedAt), style: const TextStyle(fontSize: 11, color: Pal.muted)),
        ]),
        const SizedBox(height: 8),
        if (lines.isEmpty) const Text('비어 있는 명함', style: TextStyle(color: Pal.muted)),
        for (final e in lines)
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 2),
            child: Row(crossAxisAlignment: CrossAxisAlignment.start, children: [
              SizedBox(width: 72, child: Text(e.key, style: const TextStyle(fontSize: 12, color: Pal.muted))),
              Expanded(child: Text(e.value)),
            ]),
          ),
      ]),
    );
  }
}