import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../../core/models/models.dart';
import '../../../core/network/api_exception.dart';
import '../../../data/repositories/node_repository.dart';

/// Edit dialog for the node-level [BackupConfig]'s source path. Target
/// management (add/edit/remove/run/schedule) lives in the dedicated
/// [BackupTargetsList] on the Backups screen, not in this dialog.
Future<void> showBackupConfigFormDialog(BuildContext context, {required BackupConfig existing}) {
  return showDialog<void>(
    context: context,
    builder: (context) => _BackupConfigFormDialog(existing: existing),
  );
}

class _BackupConfigFormDialog extends ConsumerStatefulWidget {
  const _BackupConfigFormDialog({required this.existing});

  final BackupConfig existing;

  @override
  ConsumerState<_BackupConfigFormDialog> createState() => _BackupConfigFormDialogState();
}

class _BackupConfigFormDialogState extends ConsumerState<_BackupConfigFormDialog> {
  late final _sourcePathController = TextEditingController(text: widget.existing.sourcePath);
  bool _saving = false;
  String? _error;

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

  Future<void> _save() async {
    setState(() {
      _saving = true;
      _error = null;
    });

    final repo = ref.read(nodeRepositoryProvider);
    if (repo == null) {
      setState(() {
        _saving = false;
        _error = 'No active connection.';
      });
      return;
    }

    final draft = widget.existing.copyWith(sourcePath: _sourcePathController.text.trim());

    try {
      await repo.updateBackup(draft);
      ref.invalidate(backupConfigProvider);
      if (mounted) Navigator.of(context).pop();
    } catch (e) {
      setState(() {
        _saving = false;
        _error = e is ApiException ? e.userMessage : e.toString();
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Edit backup configuration'),
      content: SizedBox(
        width: 420,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextFormField(
              controller: _sourcePathController,
              decoration: const InputDecoration(labelText: 'Source path', hintText: '/opt'),
            ),
            if (_error != null) ...[
              const SizedBox(height: 12),
              Text(_error!, style: TextStyle(color: Theme.of(context).colorScheme.error)),
            ],
          ],
        ),
      ),
      actions: [
        TextButton(
          onPressed: _saving ? null : () => Navigator.of(context).pop(),
          child: const Text('Cancel'),
        ),
        FilledButton(
          onPressed: _saving ? null : _save,
          child: _saving
              ? const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2))
              : const Text('Save'),
        ),
      ],
    );
  }
}