import 'package:flutter/material.dart';
import 'package:flux/features/tracking/models/tracking_model.dart';

class TicketTimelineSection extends StatefulWidget {
  final List<TrackingModel> logs;
  final void Function(String message, bool isInternal) onAddNote;

  const TicketTimelineSection({
    super.key,
    required this.logs,
    required this.onAddNote,
  });

  @override
  State<TicketTimelineSection> createState() => _TicketTimelineSectionState();
}

class _TicketTimelineSectionState extends State<TicketTimelineSection> {
  final TextEditingController _textController = TextEditingController();
  bool _isInternal = true; // Di default blindiamo tutto a uso interno!

  @override
  void dispose() {
    _textController.dispose();
    super.dispose();
  }

  void _submitNote() {
    final text = _textController.text.trim();
    if (text.isNotEmpty) {
      widget.onAddNote(text, _isInternal);
      _textController.clear();
      // Chiudiamo la tastiera se siamo su mobile
      FocusScope.of(context).unfocus();
    }
  }

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);

    return Column(
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
        // --- ZONA INPUT ---
        Container(
          padding: const EdgeInsets.all(12),
          decoration: BoxDecoration(
            color: theme.colorScheme.surfaceContainerHighest.withValues(
              alpha: 0.3,
            ),
            borderRadius: BorderRadius.circular(12),
            border: Border.all(color: theme.dividerColor),
          ),
          child: Column(
            children: [
              Row(
                children: [
                  Expanded(
                    child: TextField(
                      controller: _textController,
                      decoration: const InputDecoration(
                        hintText: 'Scrivi un aggiornamento...',
                        border: InputBorder.none,
                        isDense: true,
                      ),
                      textInputAction: TextInputAction.send,
                      onSubmitted: (_) => _submitNote(),
                    ),
                  ),
                  IconButton.filled(
                    onPressed: _submitNote,
                    icon: const Icon(Icons.send, size: 20),
                    tooltip: 'Invia',
                  ),
                ],
              ),
              const Divider(height: 16),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Row(
                    children: [
                      Icon(
                        _isInternal ? Icons.lock : Icons.public,
                        size: 16,
                        color: _isInternal
                            ? Colors.amber.shade700
                            : Colors.green,
                      ),
                      const SizedBox(width: 8),
                      Text(
                        _isInternal
                            ? 'Nota Interna (Privata)'
                            : 'Visibile al Cliente',
                        style: TextStyle(
                          fontSize: 12,
                          fontWeight: FontWeight.bold,
                          color: _isInternal
                              ? Colors.amber.shade700
                              : Colors.green,
                        ),
                      ),
                    ],
                  ),
                  Switch(
                    value: _isInternal,
                    activeThumbColor: Colors.amber.shade700,
                    activeTrackColor: Colors.amber,
                    inactiveThumbColor: Colors.green,
                    inactiveTrackColor: Colors.green.withValues(alpha: 0.2),
                    onChanged: (val) {
                      setState(() {
                        _isInternal = val;
                      });
                    },
                  ),
                ],
              ),
            ],
          ),
        ),

        const SizedBox(height: 24),

        // --- TIMELINE SCROLLABILE ---
        if (widget.logs.isEmpty)
          const Padding(
            padding: EdgeInsets.all(32.0),
            child: Center(
              child: Text(
                'Nessun evento registrato.',
                style: TextStyle(color: Colors.grey),
              ),
            ),
          )
        else
          ConstrainedBox(
            constraints: const BoxConstraints(
              maxHeight: 400,
            ), // Limite di altezza
            child: ListView.builder(
              shrinkWrap: true,
              itemCount: widget.logs.length,
              itemBuilder: (context, index) {
                final log = widget.logs[index];
                final isLast = index == widget.logs.length - 1;

                return IntrinsicHeight(
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      // --- LINEA E PALLINO ---
                      SizedBox(
                        width: 30,
                        child: Column(
                          children: [
                            Container(
                              margin: const EdgeInsets.only(top: 4),
                              width: 14,
                              height: 14,
                              decoration: BoxDecoration(
                                color: _getEventColor(log.eventType),
                                shape: BoxShape.circle,
                                border: Border.all(
                                  color: theme.scaffoldBackgroundColor,
                                  width: 2,
                                ),
                              ),
                            ),
                            if (!isLast)
                              Expanded(
                                child: Container(
                                  width: 2,
                                  color: theme.dividerColor,
                                ),
                              ),
                          ],
                        ),
                      ),

                      // --- CONTENUTO EVENTO ---
                      Expanded(
                        child: Padding(
                          padding: const EdgeInsets.only(bottom: 24.0),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Row(
                                children: [
                                  Text(
                                    log.staffName ?? 'Sistema',
                                    style: const TextStyle(
                                      fontWeight: FontWeight.bold,
                                      fontSize: 13,
                                    ),
                                  ),
                                  const SizedBox(width: 8),
                                  Text(
                                    _formatDate(log.createdAt),
                                    style: theme.textTheme.bodySmall?.copyWith(
                                      color: Colors.grey,
                                    ),
                                  ),
                                  if (!log.isInternal) ...[
                                    const Spacer(),
                                    Container(
                                      padding: const EdgeInsets.symmetric(
                                        horizontal: 6,
                                        vertical: 2,
                                      ),
                                      decoration: BoxDecoration(
                                        color: Colors.green.withValues(
                                          alpha: 0.1,
                                        ),
                                        borderRadius: BorderRadius.circular(4),
                                        border: Border.all(
                                          color: Colors.green.withValues(
                                            alpha: 0.3,
                                          ),
                                        ),
                                      ),
                                      child: const Text(
                                        "PUBBLICO",
                                        style: TextStyle(
                                          color: Colors.green,
                                          fontSize: 9,
                                          fontWeight: FontWeight.bold,
                                        ),
                                      ),
                                    ),
                                  ],
                                ],
                              ),
                              const SizedBox(height: 6),
                              Text(
                                log.message,
                                style: const TextStyle(fontSize: 14),
                              ),
                            ],
                          ),
                        ),
                      ),
                    ],
                  ),
                );
              },
            ),
          ),
      ],
    );
  }

  Color _getEventColor(TrackingType type) {
    switch (type) {
      case TrackingType.statusChange:
        return Colors.blue;
      case TrackingType.assignment:
        return Colors.purple;
      case TrackingType.systemAlert:
        return Colors.redAccent;
      case TrackingType.customerContact:
        return Colors.teal;
      case TrackingType.manualNote:
      // ignore: unreachable_switch_default
      default:
        return Colors.amber.shade600;
    }
  }

  String _formatDate(DateTime date) {
    final day = date.day.toString().padLeft(2, '0');
    final month = date.month.toString().padLeft(2, '0');
    final hour = date.hour.toString().padLeft(2, '0');
    final minute = date.minute.toString().padLeft(2, '0');
    return "$day/$month - $hour:$minute";
  }
}