import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:prosappco/blocs/professional_list_bloc/professional_list_bloc.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 UserViewProfileScreen extends StatelessWidget {
  final UserProfessional userProfessional;

  const UserViewProfileScreen({
    super.key,
    required this.userProfessional,
  });

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: context.bg,
      body: CustomScrollView(
        slivers: [
          _SliverHeader(userProfessional: userProfessional),
          SliverPadding(
            padding: const EdgeInsets.fromLTRB(16, 0, 16, 24),
            sliver: SliverList(
              delegate: SliverChildListDelegate([
                _nameSection(context),
                const SizedBox(height: 16),
                if (userProfessional
                    .professionalInfo.specializations.isNotEmpty)
                  _sectionCard(
                    context,
                    icon: Icons.stars_outlined,
                    title: 'Especialidades',
                    child: Wrap(
                      spacing: 8,
                      runSpacing: 8,
                      children: userProfessional
                          .professionalInfo.specializations
                          .map((s) => _Chip(label: s))
                          .toList(),
                    ),
                  ),
                if (userProfessional.professionalInfo.specializations.isNotEmpty)
                  const SizedBox(height: 12),
                if (userProfessional.professionalInfo.rate.isNotEmpty)
                  _sectionCard(
                    context,
                    icon: Icons.payments_outlined,
                    title: 'Tarifa de consulta',
                    child: Row(
                      children: [
                        Text(
                          _formatCurrency(
                              int.tryParse(userProfessional
                                      .professionalInfo.rate) ??
                                  0),
                          style: TextStyle(
                              fontSize: 22,
                              fontWeight: FontWeight.w700,
                              color: context.onSurface),
                        ),
                        const SizedBox(width: 6),
                        Text('por consulta',
                            style: TextStyle(
                                fontSize: 12, color: context.muted)),
                      ],
                    ),
                  ),
                if (userProfessional.professionalInfo.rate.isNotEmpty)
                  const SizedBox(height: 12),
                if (userProfessional.professionalInfo.paymentMethods.datafono ||
                    userProfessional.professionalInfo.paymentMethods.nequi ||
                    userProfessional
                        .professionalInfo.paymentMethods.transferencia)
                  _sectionCard(
                    context,
                    icon: Icons.credit_card_outlined,
                    title: 'Métodos de pago',
                    child: Wrap(
                      spacing: 8,
                      runSpacing: 8,
                      children: [
                        if (userProfessional
                            .professionalInfo.paymentMethods.datafono)
                          _Chip(label: 'Datafono', icon: Icons.point_of_sale_outlined),
                        if (userProfessional
                            .professionalInfo.paymentMethods.nequi)
                          _Chip(label: 'Nequi', icon: Icons.phone_android_outlined),
                        if (userProfessional
                            .professionalInfo.paymentMethods.transferencia)
                          _Chip(
                              label: 'Transferencia',
                              icon: Icons.account_balance_outlined),
                      ],
                    ),
                  ),
              ]),
            ),
          ),
        ],
      ),
    );
  }

  Widget _nameSection(BuildContext context) {
    return Column(
      children: [
        Text(
          userProfessional.myUser.name ?? '',
          textAlign: TextAlign.center,
          style: TextStyle(
              fontSize: 22,
              fontWeight: FontWeight.w700,
              color: context.onSurface),
        ),
        const SizedBox(height: 4),
        Text(
          '${userProfessional.professionalInfo.profession}  ·  ${userProfessional.myUser.city ?? ''}',
          textAlign: TextAlign.center,
          overflow: TextOverflow.ellipsis,
          style: TextStyle(fontSize: 14, color: context.muted),
        ),
      ],
    );
  }

  Widget _sectionCard(BuildContext context,
      {required IconData icon,
      required String title,
      required Widget child}) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: context.card,
        borderRadius: BorderRadius.circular(14),
        boxShadow: [
          BoxShadow(color: context.shadowSm, blurRadius: 10)
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Icon(icon, size: 16, color: _kPrimary),
              const SizedBox(width: 7),
              Text(title,
                  style: const TextStyle(
                      fontSize: 13,
                      fontWeight: FontWeight.w600,
                      color: _kPrimary)),
            ],
          ),
          const SizedBox(height: 10),
          child,
        ],
      ),
    );
  }

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

class _SliverHeader extends StatelessWidget {
  final UserProfessional userProfessional;
  const _SliverHeader({required this.userProfessional});

  @override
  Widget build(BuildContext context) {
    return SliverAppBar(
      expandedHeight: 220,
      pinned: true,
      backgroundColor: _kPrimary,
      foregroundColor: Colors.white,
      elevation: 0,
      flexibleSpace: FlexibleSpaceBar(
        collapseMode: CollapseMode.parallax,
        background: Stack(
          fit: StackFit.expand,
          children: [
            // Banner
            Image.network(
              userProfessional.professionalInfo.bannerPicture,
              fit: BoxFit.cover,
              errorBuilder: (_, __, ___) =>
                  Container(color: _kPrimary.withOpacity(0.6)),
            ),
            Container(
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment.topCenter,
                  end: Alignment.bottomCenter,
                  colors: [
                    Colors.transparent,
                    Colors.black.withOpacity(0.45),
                  ],
                ),
              ),
            ),
            // Avatar centered at bottom
            Positioned(
              bottom: 12,
              left: 0,
              right: 0,
              child: Center(
                child: Container(
                  width: 82,
                  height: 82,
                  decoration: BoxDecoration(
                    shape: BoxShape.circle,
                    border: Border.all(color: Colors.white, width: 3),
                    color: Colors.grey.shade300,
                    image: userProfessional.myUser.picture == null
                        ? null
                        : DecorationImage(
                            image: NetworkImage(
                                userProfessional.myUser.picture!),
                            fit: BoxFit.cover),
                  ),
                  child: userProfessional.myUser.picture == null
                      ? Icon(CupertinoIcons.person,
                          color: Colors.grey.shade400, size: 40)
                      : null,
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class _Chip extends StatelessWidget {
  final String label;
  final IconData? icon;
  const _Chip({required this.label, this.icon});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
      decoration: BoxDecoration(
        color: _kPrimary.withOpacity(0.07),
        borderRadius: BorderRadius.circular(20),
        border: Border.all(color: _kPrimary.withOpacity(0.2)),
      ),
      child: Row(mainAxisSize: MainAxisSize.min, children: [
        if (icon != null) ...[
          Icon(icon, size: 13, color: _kPrimary),
          const SizedBox(width: 4),
        ],
        Text(label,
            style: const TextStyle(
                fontSize: 12,
                fontWeight: FontWeight.w600,
                color: _kPrimary)),
      ]),
    );
  }
}