part of 'dialog.dart';

/// Dijaga supaya satu job cetak hanya membuka satu dialog, walau listener
/// terpicu lebih dari sekali.
bool _isPrintProgressDialogOpen = false;

Future<void> showPrintProgressDialog(BuildContext context) async {
  if (_isPrintProgressDialogOpen) return;
  _isPrintProgressDialogOpen = true;

  try {
    await showDialog<void>(
      context: context,
      // Cetak jalan di latar belakang, kasir tidak perlu menunggui dialognya.
      barrierDismissible: true,
      builder: (_) => const PrintProgressDialog(),
    );
  } finally {
    _isPrintProgressDialogOpen = false;
  }
}

class PrintProgressDialog extends StatefulWidget {
  const PrintProgressDialog({super.key});

  @override
  State<PrintProgressDialog> createState() => _PrintProgressDialogState();
}

class _PrintProgressDialogState extends State<PrintProgressDialog> {
  Timer? _autoClose;

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

  /// Semua station keluar — tutup sendiri supaya antrean kasir tidak tertahan,
  /// tapi beri jeda sebentar agar centang hijaunya sempat terbaca.
  void _scheduleAutoClose() {
    _autoClose?.cancel();
    _autoClose = Timer(const Duration(milliseconds: 1500), () {
      if (mounted) Navigator.of(context).pop();
    });
  }

  @override
  Widget build(BuildContext context) {
    return BlocConsumer<PrintStruckBloc, PrintStruckState>(
      listenWhen: (previous, current) =>
          previous.isPrinting && !current.isPrinting,
      listener: (context, state) {
        if (state.hasFailure) return;
        _scheduleAutoClose();
      },
      builder: (context, state) {
        final isDone = !state.isPrinting;

        return CustomModalDialog(
          title: isDone ? 'Hasil Cetak' : 'Mencetak Struk',
          maxWidth: 480,
          minHeight: 0,
          contentPadding: const EdgeInsets.all(20),
          bottom: _buildFooter(context, state),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              _buildSummary(state),
              const SpaceHeight(16),
              for (final result in state.stations) ...[
                _StationRow(result: result),
                const SpaceHeight(8),
              ],
            ],
          ),
        );
      },
    );
  }

  Widget _buildSummary(PrintStruckState state) {
    final isDone = !state.isPrinting;
    final total = state.plannedCount;
    final success = state.successCount;

    final Color color;
    final String message;

    if (!isDone) {
      color = AppColor.primary;
      message = 'Mengirim ke printer…';
    } else if (state.hasFailure) {
      color = AppColor.error;
      message = '${state.failedStations.length} station gagal dicetak';
    } else {
      color = AppColor.success;
      message = 'Semua struk berhasil dicetak';
    }

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      decoration: BoxDecoration(
        color: color.withOpacity(0.08),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: color.withOpacity(0.25)),
      ),
      child: Row(
        children: [
          Expanded(
            child: Text(
              message,
              style: AppStyle.md.copyWith(
                color: color,
                fontWeight: FontWeight.w600,
              ),
            ),
          ),
          Text(
            '$success dari $total',
            style: AppStyle.md.copyWith(
              color: color,
              fontWeight: FontWeight.bold,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildFooter(BuildContext context, PrintStruckState state) {
    final isDone = !state.isPrinting;

    return Container(
      padding: const EdgeInsets.fromLTRB(20, 0, 20, 20),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          if (!isDone) ...[
            Text(
              'Cetak berjalan di latar belakang. Dialog ini boleh ditutup.',
              style: AppStyle.sm.copyWith(color: AppColor.textSecondary),
              textAlign: TextAlign.center,
            ),
            const SpaceHeight(12),
          ],
          Row(
            children: [
              Expanded(
                child: AppElevatedButton.outlined(
                  onPressed: () => Navigator.of(context).pop(),
                  label: 'Tutup',
                ),
              ),
              if (isDone && state.hasFailure) ...[
                const SpaceWidth(12),
                Expanded(
                  flex: 2,
                  child: AppElevatedButton.filled(
                    onPressed: () => context.read<PrintStruckBloc>().add(
                      const PrintStruckEvent.retryFailed(),
                    ),
                    label: 'Cetak Ulang yang Gagal',
                    icon: const Icon(
                      Icons.refresh_rounded,
                      color: AppColor.white,
                      size: 18,
                    ),
                  ),
                ),
              ],
            ],
          ),
        ],
      ),
    );
  }
}

class _StationRow extends StatelessWidget {
  final PrintStationResult result;

  const _StationRow({required this.result});

  @override
  Widget build(BuildContext context) {
    final color = _color;

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(12),
        border: Border.all(
          color: result.isFailed ? color.withOpacity(0.4) : AppColor.border,
        ),
        color: result.isFailed ? color.withOpacity(0.05) : Colors.transparent,
      ),
      child: Row(
        children: [
          SizedBox(width: 20, height: 20, child: Center(child: _icon)),
          const SpaceWidth(12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  result.station.label,
                  style: AppStyle.md.copyWith(fontWeight: FontWeight.w600),
                ),
                const SpaceHeight(2),
                Text(
                  _statusText,
                  style: AppStyle.sm.copyWith(color: color),
                ),
              ],
            ),
          ),
          if (result.elapsed > Duration.zero) ...[
            const SpaceWidth(8),
            Text(
              '${(result.elapsed.inMilliseconds / 1000).toStringAsFixed(1)}s',
              style: AppStyle.sm.copyWith(color: AppColor.textSecondary),
            ),
          ],
        ],
      ),
    );
  }

  Widget get _icon => switch (result.status) {
    PrintStationStatus.printing => const SizedBox(
      width: 16,
      height: 16,
      child: CircularProgressIndicator(strokeWidth: 2),
    ),
    PrintStationStatus.pending => const Icon(
      Icons.schedule_rounded,
      size: 18,
      color: AppColor.textSecondary,
    ),
    PrintStationStatus.success => const Icon(
      Icons.check_circle_rounded,
      size: 20,
      color: AppColor.success,
    ),
    PrintStationStatus.failed => const Icon(
      Icons.error_rounded,
      size: 20,
      color: AppColor.error,
    ),
    PrintStationStatus.skipped => const Icon(
      Icons.remove_circle_outline_rounded,
      size: 18,
      color: AppColor.textSecondary,
    ),
  };

  Color get _color => switch (result.status) {
    PrintStationStatus.printing => AppColor.primary,
    PrintStationStatus.success => AppColor.success,
    PrintStationStatus.failed => AppColor.error,
    PrintStationStatus.pending ||
    PrintStationStatus.skipped => AppColor.textSecondary,
  };

  String get _statusText => switch (result.status) {
    PrintStationStatus.pending => 'Menunggu giliran',
    PrintStationStatus.printing => 'Mengirim ke printer…',
    PrintStationStatus.success => 'Berhasil dicetak',
    PrintStationStatus.failed => result.message ?? 'Gagal dicetak',
    PrintStationStatus.skipped => result.message ?? 'Dilewati',
  };
}