import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:share_plus/share_plus.dart';

import '../l10n/generated/app_localizations.dart';

class LiveDiagnosticsDialog extends StatefulWidget {
  const LiveDiagnosticsDialog({super.key, required this.diagnosticsTextBuilder});

  final String Function() diagnosticsTextBuilder;

  @override
  State<LiveDiagnosticsDialog> createState() => _LiveDiagnosticsDialogState();
}

class _LiveDiagnosticsDialogState extends State<LiveDiagnosticsDialog> {
  static const _refreshInterval = Duration(seconds: 1);

  Timer? _refreshTimer;
  String _text = '';

  @override
  void initState() {
    super.initState();
    _refresh();
    _refreshTimer = Timer.periodic(_refreshInterval, (_) => _refresh());
  }

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

  void _refresh() {
    final next = widget.diagnosticsTextBuilder();
    if (!mounted || next == _text) return;
    setState(() => _text = next);
  }

  @override
  Widget build(BuildContext context) {
    final l10n = AppL10n.of(context);
    final size = MediaQuery.sizeOf(context);

    return AlertDialog(
      title: Row(
        children: [
          Expanded(child: Text(l10n.diagnosticsAction)),
          const SizedBox(width: 12),
          Tooltip(
            message: l10n.diagnosticsLiveUpdating,
            child: Icon(
              Icons.sync,
              size: 18,
              color: Theme.of(context).colorScheme.primary,
            ),
          ),
        ],
      ),
      content: ConstrainedBox(
        constraints: BoxConstraints(
          maxWidth: 720,
          maxHeight: size.height * 0.65,
        ),
        child: SingleChildScrollView(
          child: SelectableText(
            _text,
            style: const TextStyle(fontFamily: 'monospace', fontSize: 11),
          ),
        ),
      ),
      actions: [
        TextButton(
          onPressed: () async {
            await SharePlus.instance.share(ShareParams(text: _text));
          },
          child: Text(l10n.shareAction),
        ),
        TextButton(
          onPressed: () async {
            await Clipboard.setData(ClipboardData(text: _text));
            if (!context.mounted) return;
            Navigator.of(context).pop();
          },
          child: Text(l10n.copyAction),
        ),
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: Text(l10n.closeAction),
        ),
      ],
    );
  }
}