import 'package:flutter/material.dart';
import 'package:em2rp/models/user_model.dart';
import 'package:em2rp/utils/colors.dart';

class UserCard extends StatefulWidget {
  final UserModel user;
  final VoidCallback onEdit;
  final VoidCallback onDelete;

  static const double _desktopMaxWidth = 280;

  const UserCard({
    super.key,
    required this.user,
    required this.onEdit,
    required this.onDelete,
  });

  @override
  State<UserCard> createState() => _UserCardState();
}

class _UserCardState extends State<UserCard> {
  ImageProvider? _profileImage;
  String? _lastUrl;
  bool _isLoadingImage = false;

  @override
  void didUpdateWidget(UserCard oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (oldWidget.user.profilePhotoUrl != widget.user.profilePhotoUrl) {
      _loadProfileImage();
    }
  }

  @override
  void initState() {
    super.initState();
    _loadProfileImage();
  }

  void _loadProfileImage() {
    final url = widget.user.profilePhotoUrl;
    if (url.isNotEmpty) {
      setState(() {
        _isLoadingImage = true;
        _lastUrl = url;
      });
      final image = NetworkImage(url);
      image.resolve(const ImageConfiguration()).addListener(
            ImageStreamListener(
              (info, _) {
                if (mounted) {
                  setState(() {
                    _profileImage = image;
                    _isLoadingImage = false;
                  });
                }
              },
              onError: (error, stack) {
                if (mounted) {
                  setState(() {
                    _profileImage = null;
                    _isLoadingImage = false;
                  });
                }
              },
            ),
          );
    } else {
      setState(() {
        _profileImage = null;
        _isLoadingImage = false;
        _lastUrl = null;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    final width = MediaQuery.of(context).size.width;
    final isMobile = width < 600;

    return Card(
      margin: EdgeInsets.zero,
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
      elevation: 3,
      child: Container(
        constraints: BoxConstraints(
          maxWidth: isMobile ? double.infinity : UserCard._desktopMaxWidth,
        ),
        padding: const EdgeInsets.all(12),
        child:
            isMobile ? _buildMobileRow(context) : _buildDesktopColumn(context),
      ),
    );
  }

  Widget _buildMobileRow(BuildContext context) {
    return Row(
      children: [
        _profileAvatar(40),
        const SizedBox(width: 12),
        Expanded(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(
                "${widget.user.firstName} ${widget.user.lastName}",
                style: Theme.of(context).textTheme.titleSmall,
                overflow: TextOverflow.ellipsis,
              ),
              const SizedBox(height: 2),
              Text(
                widget.user.email,
                style: Theme.of(context).textTheme.bodySmall,
                overflow: TextOverflow.ellipsis,
              ),
            ],
          ),
        ),
        Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            IconButton(
              icon: const Icon(Icons.edit, size: 20),
              onPressed: widget.onEdit,
              color: AppColors.rouge,
              padding: const EdgeInsets.all(8),
              constraints: const BoxConstraints(
                minWidth: 32,
                minHeight: 32,
              ),
            ),
            IconButton(
              icon: const Icon(Icons.delete, size: 20),
              onPressed: widget.onDelete,
              color: AppColors.gris,
              padding: const EdgeInsets.all(8),
              constraints: const BoxConstraints(
                minWidth: 32,
                minHeight: 32,
              ),
            ),
          ],
        ),
      ],
    );
  }

  Widget _buildDesktopColumn(BuildContext context) {
    return LayoutBuilder(
      builder: (context, constraints) {
        final isNarrow = constraints.maxWidth < 200;

        return Column(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                _profileAvatar(48),
                const SizedBox(height: 12),
                Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Text(
                      "${widget.user.firstName} ${widget.user.lastName}",
                      style: Theme.of(context).textTheme.titleSmall,
                      textAlign: TextAlign.center,
                      overflow: TextOverflow.ellipsis,
                    ),
                    const SizedBox(height: 4),
                    Text(
                      widget.user.email,
                      style: Theme.of(context).textTheme.bodySmall,
                      textAlign: TextAlign.center,
                      overflow: TextOverflow.ellipsis,
                    ),
                    if (widget.user.role.isNotEmpty) ...[
                      const SizedBox(height: 4),
                      Text(
                        widget.user.role,
                        style: Theme.of(context).textTheme.bodySmall!.copyWith(
                              color: AppColors.gris,
                              fontSize: 11,
                            ),
                        textAlign: TextAlign.center,
                        overflow: TextOverflow.ellipsis,
                      ),
                    ],
                  ],
                ),
              ],
            ),
            Padding(
              padding: const EdgeInsets.only(bottom: 4),
              child: isNarrow
                  ? Column(
                      mainAxisSize: MainAxisSize.min,
                      children: [
                        _buildButton(
                          icon: Icons.edit,
                          label: "Modifier",
                          onPressed: widget.onEdit,
                          color: AppColors.rouge,
                          isNarrow: true,
                        ),
                        const SizedBox(height: 4),
                        _buildButton(
                          icon: Icons.delete,
                          label: "Supprimer",
                          onPressed: widget.onDelete,
                          color: AppColors.gris,
                          isNarrow: true,
                        ),
                      ],
                    )
                  : Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        _buildButton(
                          icon: Icons.edit,
                          label: "Modifier",
                          onPressed: widget.onEdit,
                          color: AppColors.rouge,
                          isNarrow: false,
                        ),
                        const SizedBox(width: 8),
                        _buildButton(
                          icon: Icons.delete,
                          label: "Supprimer",
                          onPressed: widget.onDelete,
                          color: AppColors.gris,
                          isNarrow: false,
                        ),
                      ],
                    ),
            ),
          ],
        );
      },
    );
  }

  Widget _buildButton({
    required IconData icon,
    required String label,
    required VoidCallback onPressed,
    required Color color,
    required bool isNarrow,
  }) {
    return SizedBox(
      height: 26,
      width: isNarrow ? double.infinity : null,
      child: ElevatedButton.icon(
        icon: Icon(icon, size: 14),
        label: Text(
          label,
          style: const TextStyle(fontSize: 11),
          overflow: TextOverflow.ellipsis,
        ),
        onPressed: onPressed,
        style: ElevatedButton.styleFrom(
          backgroundColor: color,
          foregroundColor: AppColors.blanc,
          padding: EdgeInsets.symmetric(
            horizontal: isNarrow ? 4 : 8,
            vertical: 0,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(6),
          ),
        ),
      ),
    );
  }

  Widget _profileAvatar(double size) {
    if (_isLoadingImage && widget.user.profilePhotoUrl.isNotEmpty) {
      return CircleAvatar(
        radius: size / 2,
        backgroundColor: Colors.grey[300],
        child: SizedBox(
          width: size * 0.5,
          height: size * 0.5,
          child: const CircularProgressIndicator(strokeWidth: 2),
        ),
      );
    }
    return CircleAvatar(
      radius: size / 2,
      backgroundImage: _profileImage,
      backgroundColor: Colors.grey[200],
      child: (widget.user.profilePhotoUrl.isEmpty || _profileImage == null)
          ? Icon(Icons.person, size: size * 0.6, color: AppColors.noir)
          : null,
    );
  }
}