import 'package:flutter/material.dart';

import '../../data/api/report_data_source.dart';
import '../../data/models/models.dart';
import '../../routing/app_routes.dart';
import '../../theme/wise_tokens.dart';
import '../../widgets/app_buttons.dart';
import '../../widgets/app_card.dart';
import '../../widgets/badges.dart';
import '../../widgets/sheets.dart';
import '../../widgets/states.dart';
import '../shared/report_card_widget.dart';

class InstitutionDetailPage extends StatefulWidget {
  const InstitutionDetailPage({required this.institutionId, required this.dataSource, super.key});

  final String institutionId;
  final ReportDataSource dataSource;

  @override
  State<InstitutionDetailPage> createState() => _InstitutionDetailPageState();
}

class _InstitutionDetailPageState extends State<InstitutionDetailPage> {
  late Future<Institution> future = widget.dataSource.institutionDetail(widget.institutionId);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('机构主页')),
      body: FutureBuilder<Institution>(
        future: future,
        builder: (context, snapshot) {
          if (snapshot.connectionState != ConnectionState.done) return const LoadingState();
          if (snapshot.hasError) return ErrorState(message: snapshot.error.toString(), onRetry: () => setState(() => future = widget.dataSource.institutionDetail(widget.institutionId)));
          final item = snapshot.data!;
          return ListView(
            padding: const EdgeInsets.all(WiseSpacing.x4),
            children: [
              AppCard(
                color: WiseColors.secondary200,
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(item.nameCn, style: Theme.of(context).textTheme.headlineSmall),
                    if (item.nameEn.isNotEmpty) Text(item.nameEn, style: Theme.of(context).textTheme.bodyMedium),
                    const SizedBox(height: WiseSpacing.x3),
                    Wrap(
                      spacing: WiseSpacing.x2,
                      runSpacing: WiseSpacing.x2,
                      children: [
                        AppBadge(text: item.sourceTier, icon: Icons.verified_outlined, kind: BadgeKind.tier),
                        AppBadge(text: '${item.reportCount} 份研报', kind: BadgeKind.brand),
                        for (final topic in item.coveredTopics) AppBadge(text: topic),
                      ],
                    ),
                  ],
                ),
              ),
              const SizedBox(height: WiseSpacing.x3),
              if (item.introCn.isNotEmpty)
                AppCard(child: Text(item.introCn, style: Theme.of(context).textTheme.bodyMedium)),
              const SizedBox(height: WiseSpacing.x3),
              if (item.credibilityNote.isNotEmpty)
                AppCard(
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      const Icon(Icons.verified_user_outlined, color: WiseColors.positive),
                      const SizedBox(width: WiseSpacing.x2),
                      Expanded(child: Text(item.credibilityNote, style: Theme.of(context).textTheme.bodyMedium)),
                    ],
                  ),
                ),
              const SizedBox(height: WiseSpacing.x5),
              Text('最新研报', style: Theme.of(context).textTheme.titleMedium),
              const SizedBox(height: WiseSpacing.x3),
              if (item.recentReports.isEmpty)
                const EmptyState(title: '机构暂无研报', message: '稍后再试', icon: Icons.article_outlined)
              else
                for (final report in item.recentReports) ...[
                  ReportCardWidget(
                    report: report,
                    onTap: () => openReportDetail(context, widget.dataSource, report),
                  ),
                  const SizedBox(height: WiseSpacing.x3),
                ],
              AppButton(
                label: '了解相关服务',
                icon: Icons.open_in_new,
                kind: AppButtonKind.ghost,
                expand: true,
                onPressed: () => showOutboundSheet(context, title: item.nameCn),
              ),
            ],
          );
        },
      ),
    );
  }
}