import 'dart:async';
import 'package:community_material_icon/community_material_icon.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:injector/injector.dart';
import 'package:intl/intl.dart';
import 'package:professional_repository/professional_repository.dart';
import 'package:prosappco/blocs/service_bloc/service_bloc.dart';
import 'package:prosappco/components/general_reputation.dart';
import 'package:prosappco/components/general_secondary_button.dart';
import 'package:prosappco/screens/chat/chat_screen.dart';
import 'package:prosappco/screens/score/score_screen.dart';
import 'package:score_repository/score_repository.dart';
import 'package:service_repository/service_repository.dart';
import 'package:setting_repository/setting_repository.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:user_repository/user_repository.dart';

const _kPrimary = Color(0xFF1565C0);

extension _Th on BuildContext {
  ThemeData get _t => Theme.of(this);
  Color get bg => _t.scaffoldBackgroundColor;
  Color get card => _t.cardColor;
  Color get onSurface => _t.colorScheme.onSurface;
  Color get muted => _t.colorScheme.onSurface.withOpacity(0.55);
  Color get subtle => _t.colorScheme.onSurface.withOpacity(0.35);
  bool get isDark => _t.brightness == Brightness.dark;
  Color get shadowSm =>
      isDark ? Colors.transparent : Colors.black.withOpacity(0.05);
}

class ProfessionalServiceScreen extends StatefulWidget {
  final String serviceId;
  const ProfessionalServiceScreen({super.key, required this.serviceId});

  @override
  State<ProfessionalServiceScreen> createState() =>
      _ProfessionalServiceScreenState();
}

class _ProfessionalServiceScreenState
    extends State<ProfessionalServiceScreen> {
  final settingRepository = Injector.appInstance.get<SettingRepository>();
  SettingEntity? settings;
  Timer? _timer;

  @override
  void initState() {
    super.initState();
    _loadSettings();
    _startTimer();
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }

  void _startTimer() {
    _timer = Timer.periodic(const Duration(minutes: 5), (_) {
      setState(() {});
    });
  }

  void _loadSettings() {
    settingRepository.getSettings().then((v) => setState(() => settings = v));
  }

  @override
  Widget build(BuildContext context) {
    return BlocProvider<ServiceBloc>(
      create: (_) => Injector.appInstance.get<ServiceBloc>(),
      child: Scaffold(
        backgroundColor: context.bg,
        appBar: AppBar(
          title: const Text('Detalle del servicio'),
          backgroundColor: _kPrimary,
          foregroundColor: Colors.white,
          elevation: 0,
        ),
        body: BlocBuilder<ServiceBloc, ServiceState>(
          builder: (context, state) {
            if (state is ServiceLoaded) {
              final service = state.service;
              return FutureBuilder<List<dynamic>>(
                future: _getUserInfo(service),
                builder: (context, snapshot) {
                  if (snapshot.connectionState == ConnectionState.waiting) {
                    return const Center(child: CircularProgressIndicator());
                  }
                  if (snapshot.hasError) {
                    return Center(
                        child: Text('Error: ${snapshot.error}'));
                  }
                  final userInfo = snapshot.data![0] as MyUser;
                  return Column(
                    children: [
                      Expanded(
                        child: SingleChildScrollView(
                          child: Column(
                            children: [
                              _headerCard(context, service, userInfo),
                              _locationCard(context, service),
                              if (service.description.isNotEmpty)
                                _descriptionCard(context, service),
                              _actionButtons(context, service, userInfo),
                              _statusBanner(context, service),
                              const SizedBox(height: 24),
                            ],
                          ),
                        ),
                      ),
                      const Divider(height: 1, thickness: 0.5),
                      Padding(
                        padding: const EdgeInsets.symmetric(
                            vertical: 12, horizontal: 16),
                        child: _bottomButton(context, service),
                      ),
                    ],
                  );
                },
              );
            } else {
              BlocProvider.of<ServiceBloc>(context)
                  .add(LoadService(widget.serviceId));
              return const Center(child: CircularProgressIndicator());
            }
          },
        ),
      ),
    );
  }

  Widget _headerCard(
      BuildContext context, ServiceEntity service, MyUser user) {
    return Container(
      width: double.infinity,
      margin: const EdgeInsets.all(16),
      padding: const EdgeInsets.all(20),
      decoration: BoxDecoration(
        color: context.card,
        borderRadius: BorderRadius.circular(16),
        boxShadow: [
          BoxShadow(
              color: context.shadowSm,
              blurRadius: 12,
              offset: const Offset(0, 2))
        ],
      ),
      child: Column(
        children: [
          Stack(
            alignment: Alignment.center,
            children: [
              // Avatar
              Container(
                width: 90,
                height: 90,
                decoration: BoxDecoration(
                  shape: BoxShape.circle,
                  border:
                      Border.all(color: _kPrimary.withOpacity(0.25), width: 3),
                  color: Colors.grey.shade200,
                  image: user.picture != null && user.picture!.isNotEmpty
                      ? DecorationImage(
                          image: NetworkImage(user.picture!),
                          fit: BoxFit.cover)
                      : null,
                ),
                child: user.picture == null || user.picture!.isEmpty
                    ? Icon(CupertinoIcons.person,
                        color: Colors.grey.shade500, size: 40)
                    : null,
              ),
              // Star rating badge
              GeneralReputation(
                userId: service.userId,
                builder: (_, ReputationEntity reputation) {
                  return Positioned(
                    top: 0,
                    right: MediaQuery.of(context).size.width * 0.18,
                    child: Container(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 8, vertical: 3),
                      decoration: BoxDecoration(
                        color: context.card,
                        borderRadius: BorderRadius.circular(20),
                        boxShadow: [
                          BoxShadow(
                              color: context.shadowSm,
                              blurRadius: 6,
                              spreadRadius: 1)
                        ],
                      ),
                      child: Row(mainAxisSize: MainAxisSize.min, children: [
                        const Icon(Icons.star, color: Colors.amber, size: 14),
                        const SizedBox(width: 3),
                        Text(reputation.average.toStringAsFixed(1),
                            style: TextStyle(
                                fontSize: 12,
                                fontWeight: FontWeight.w600,
                                color: context.onSurface)),
                      ]),
                    ),
                  );
                },
              ),
            ],
          ),
          const SizedBox(height: 10),
          Text(user.name ?? '',
              style: TextStyle(
                  fontSize: 17,
                  fontWeight: FontWeight.w700,
                  color: context.onSurface)),
          const SizedBox(height: 4),
          Row(mainAxisAlignment: MainAxisAlignment.center, children: [
            Icon(Icons.calendar_today_outlined, size: 13, color: context.muted),
            const SizedBox(width: 5),
            Text(
              '${DateFormat('dd MMMM', 'es').format(DateTime.parse(service.day))} · ${ScheduleEntity.getFormatTime(service.range1Hour1) ?? ''}',
              style: TextStyle(
                  fontSize: 13,
                  color: context.muted,
                  fontWeight: FontWeight.w500),
            ),
          ]),
        ],
      ),
    );
  }

  Widget _locationCard(BuildContext context, ServiceEntity service) {
    final isDelivery =
        service.location == ServiceLocationPreferences.delivery;
    if (!isDelivery &&
        service.status != ServiceStatus.acepted &&
        service.status != ServiceStatus.pending &&
        service.status != ServiceStatus.active) {
      return const SizedBox();
    }

    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      decoration: BoxDecoration(
        color: _kPrimary.withOpacity(0.06),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: _kPrimary.withOpacity(0.15)),
      ),
      child: Row(
        children: [
          Icon(
              isDelivery ? Icons.home_outlined : Icons.business_outlined,
              color: _kPrimary,
              size: 20),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                    isDelivery
                        ? 'Servicio a domicilio'
                        : 'Servicio en consultorio',
                    style: TextStyle(
                        fontSize: 13,
                        fontWeight: FontWeight.w600,
                        color: _kPrimary)),
                if (isDelivery &&
                    (service.status == ServiceStatus.acepted ||
                        service.status == ServiceStatus.pending ||
                        service.status == ServiceStatus.active) &&
                    service.address.isNotEmpty)
                  Padding(
                    padding: const EdgeInsets.only(top: 2),
                    child: Text(service.address,
                        style: TextStyle(
                            fontSize: 12, color: context.muted)),
                  ),
              ],
            ),
          ),
          if (isDelivery &&
              (service.status == ServiceStatus.acepted ||
                  service.status == ServiceStatus.pending ||
                  service.status == ServiceStatus.active))
            IconButton(
              icon: Icon(Icons.near_me, color: _kPrimary),
              onPressed: () async {
                final url = Uri.parse(
                    'https://www.google.com/maps/search/?api=1&query=${service.latitude},${service.longitude}');
                if (!await launchUrl(url)) throw Exception('No se pudo abrir mapa');
              },
            ),
        ],
      ),
    );
  }

  Widget _descriptionCard(BuildContext context, ServiceEntity service) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      padding: const EdgeInsets.all(14),
      decoration: BoxDecoration(
        color: context.card,
        borderRadius: BorderRadius.circular(12),
        boxShadow: [
          BoxShadow(color: context.shadowSm, blurRadius: 8)
        ],
      ),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Icon(Icons.format_quote_rounded,
              color: context.subtle, size: 20),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              service.description.trim(),
              style: TextStyle(
                  fontSize: 13,
                  color: context.muted,
                  fontStyle: FontStyle.italic,
                  height: 1.5),
            ),
          ),
        ],
      ),
    );
  }

  Widget _actionButtons(
      BuildContext context, ServiceEntity service, MyUser user) {
    final serviceDate = DateTime.parse(service.day);
    final now = DateTime.now();
    final serviceDateTime = DateTime(serviceDate.year, serviceDate.month,
        serviceDate.day, service.range1Hour2.hour, service.range1Hour2.minute);

    if ((service.status == ServiceStatus.acepted ||
            service.status == ServiceStatus.active) &&
        !now.isAfter(serviceDateTime)) {
      return Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            if (user.phone != null)
              _ActionBtn(
                icon: Icons.phone_outlined,
                label: 'Llamar',
                onTap: () => launchUrl(Uri.parse('tel:${user.phone}')),
              ),
            if (user.phone != null) const SizedBox(width: 10),
            _ActionBtn(
              icon: Icons.chat_bubble_outline_rounded,
              label: 'Chat',
              onTap: () {
                if (service.id != null) {
                  Navigator.push(
                      context,
                      CupertinoPageRoute(
                          builder: (_) => ChatScreen(service: service)));
                }
              },
            ),
            if (user.phone != null) const SizedBox(width: 10),
            if (user.phone != null)
              _ActionBtn(
                icon: CommunityMaterialIcons.whatsapp,
                label: 'WhatsApp',
                onTap: () async {
                  final url =
                      'https://wa.me/${user.phone}?text=${Uri.encodeFull('Hola! me contactaste por Prossapp')}';
                  if (!await launchUrl(Uri.parse(url))) {
                    throw Exception('No se pudo abrir WhatsApp');
                  }
                },
              ),
          ],
        ),
      );
    }
    return const SizedBox();
  }

  Widget _statusBanner(BuildContext context, ServiceEntity service) {
    final serviceDate = DateTime.parse(service.day);
    final now = DateTime.now();
    final serviceDateTime = DateTime(serviceDate.year, serviceDate.month,
        serviceDate.day, service.range1Hour2.hour, service.range1Hour2.minute);

    final bool expired = now.isAfter(serviceDateTime);

    if (expired) {
      return _StatusCard(
        color: const Color(0xFFDC2626),
        icon: Icons.timer_off_outlined,
        title: 'Caducado',
        subtitle: 'El tiempo del servicio ha expirado',
      );
    }

    switch (service.status) {
      case ServiceStatus.cancelled:
        return _StatusCard(
          color: const Color(0xFF9CA3AF),
          icon: Icons.remove_circle_outline,
          title: 'Cancelado',
          subtitle: 'El servicio fue cancelado',
        );
      case ServiceStatus.denied:
        return _StatusCard(
          color: const Color(0xFFDC2626),
          icon: Icons.cancel_outlined,
          title: 'Rechazado',
          subtitle: 'El servicio fue rechazado',
        );
      case ServiceStatus.completed:
        if (service.userScored == false) {
          return _StatusCard(
            color: const Color(0xFF16A34A),
            icon: Icons.star_outline_rounded,
            title: 'Completado',
            subtitle: 'Califica el servicio',
            action: _ScoreButton(service: service),
          );
        }
        return _StatusCard(
          color: const Color(0xFF16A34A),
          icon: Icons.task_alt_outlined,
          title: 'Completado',
          subtitle: '¡Servicio finalizado exitosamente!',
        );
      default:
        return const SizedBox();
    }
  }

  Widget _bottomButton(BuildContext context, ServiceEntity service) {
    final serviceDate = DateTime.parse(service.day);
    final now = DateTime.now();
    final serviceDateTime = DateTime(serviceDate.year, serviceDate.month,
        serviceDate.day, service.range1Hour2.hour, service.range1Hour2.minute);

    if (now.isAfter(serviceDateTime)) {
      return GeneralSecondaryButton(
          label: 'Volver', onPressed: () => Navigator.pop(context));
    }

    if (service.status == ServiceStatus.pending) {
      return Column(
        children: [
          GeneralSecondaryButton(
            label: 'Rechazar servicio',
            color: Theme.of(context).colorScheme.error,
            onPressed: () {
              final s = context.read<ServiceBloc>().state;
              if (s is ServiceLoaded) {
                context.read<ServiceBloc>().add(
                    UpdateServiceStatus(widget.serviceId, ServiceStatus.denied));
              }
            },
          ),
          const SizedBox(height: 10),
          GeneralSecondaryButton(
            label: 'Aceptar servicio',
            onPressed: () {
              final s = context.read<ServiceBloc>().state;
              if (s is ServiceLoaded) {
                context.read<ServiceBloc>().add(UpdateServiceStatus(
                    widget.serviceId, ServiceStatus.acepted));
              }
            },
          ),
        ],
      );
    }

    if (service.status == ServiceStatus.acepted) {
      if (serviceDateTime.difference(now).inHours > 1) {
        return GeneralSecondaryButton(
          label: 'Cancelar servicio',
          color: Theme.of(context).colorScheme.error,
          onPressed: () {
            final s = context.read<ServiceBloc>().state;
            if (s is ServiceLoaded) {
              context.read<ServiceBloc>().add(UpdateServiceStatus(
                  widget.serviceId, ServiceStatus.cancelled));
            }
          },
        );
      } else {
        return GeneralSecondaryButton(
          label: 'Iniciar servicio',
          onPressed: () {
            final s = context.read<ServiceBloc>().state;
            if (s is ServiceLoaded) {
              context.read<ServiceBloc>().add(
                  UpdateServiceStatus(widget.serviceId, ServiceStatus.active));
            }
          },
        );
      }
    }

    if (service.status == ServiceStatus.active) {
      return GeneralSecondaryButton(
        label: 'Terminar servicio',
        onPressed: () {
          final s = context.read<ServiceBloc>().state;
          if (s is ServiceLoaded) {
            context.read<ServiceBloc>().add(UpdateServiceStatus(
                widget.serviceId, ServiceStatus.completed));
          }
        },
      );
    }

    return GeneralSecondaryButton(
        label: 'Volver', onPressed: () => Navigator.pop(context));
  }

  String formatCurrency(int number) {
    final formatter =
        NumberFormat.currency(locale: 'es_CO', decimalDigits: 0, symbol: '');
    return '\$${formatter.format(number)}';
  }

  Future<List<dynamic>> _getUserInfo(ServiceEntity service) async {
    final userRepo = Injector.appInstance.get<UserRepository>();
    final userInfo = await userRepo.getMyUser(service.userId);
    return [userInfo];
  }
}

// ── shared widgets ──────────────────────────────────────────────────────────

class _ActionBtn extends StatelessWidget {
  final IconData icon;
  final String label;
  final VoidCallback onTap;
  const _ActionBtn(
      {required this.icon, required this.label, required this.onTap});

  @override
  Widget build(BuildContext context) {
    return OutlinedButton.icon(
      onPressed: onTap,
      icon: Icon(icon, size: 16),
      label: Text(label, style: const TextStyle(fontSize: 12)),
      style: OutlinedButton.styleFrom(
        foregroundColor: _kPrimary,
        side: BorderSide(color: _kPrimary.withOpacity(0.5)),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(24)),
        padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
      ),
    );
  }
}

class _StatusCard extends StatelessWidget {
  final Color color;
  final IconData icon;
  final String title;
  final String subtitle;
  final Widget? action;
  const _StatusCard({
    required this.color,
    required this.icon,
    required this.title,
    required this.subtitle,
    this.action,
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: color.withOpacity(0.08),
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: color.withOpacity(0.3)),
      ),
      child: Column(
        children: [
          Row(
            children: [
              Container(
                width: 44,
                height: 44,
                decoration: BoxDecoration(
                  color: color.withOpacity(0.15),
                  shape: BoxShape.circle,
                ),
                child: Icon(icon, color: color, size: 24),
              ),
              const SizedBox(width: 14),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(title,
                        style: TextStyle(
                            fontSize: 16,
                            fontWeight: FontWeight.w700,
                            color: color)),
                    Text(subtitle,
                        style: TextStyle(
                            fontSize: 12,
                            color: color.withOpacity(0.75))),
                  ],
                ),
              ),
            ],
          ),
          if (action != null) ...[
            const SizedBox(height: 12),
            action!,
          ],
        ],
      ),
    );
  }
}

class _ScoreButton extends StatelessWidget {
  final ServiceEntity service;
  const _ScoreButton({required this.service});

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      width: double.infinity,
      child: ElevatedButton.icon(
        onPressed: () => Navigator.push(
          context,
          CupertinoPageRoute(builder: (_) => ScoreScreen(service: service)),
        ),
        icon: const Icon(Icons.star_outline_rounded, size: 18),
        label: const Text('Calificar servicio'),
        style: ElevatedButton.styleFrom(
          backgroundColor: const Color(0xFF16A34A),
          foregroundColor: Colors.white,
          elevation: 0,
          padding: const EdgeInsets.symmetric(vertical: 12),
          shape:
              RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
        ),
      ),
    );
  }
}