selfprivacy.org.app/lib/ui/pages/server_details/charts/cpu_chart.dart

import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:selfprivacy/ui/pages/server_details/charts/generic_chart.dart';

class CpuChart extends GenericLineChart {
  const CpuChart({
    required super.data,
    required super.period,
    required super.start,
    super.key,
  });

  @override
  String screenReaderDescription(final BuildContext context) {
    final lastData = data.first.last;
    final lastValue = lastData.value;

    final averageUsage = data.first
            .map((final e) => e.value)
            .reduce((final a, final b) => a + b) /
        data.length;
    final maxUsage = data.first
        .map((final e) => e.value)
        .reduce((final a, final b) => a > b ? a : b);
    final maxUsageTime =
        data.first.firstWhere((final e) => e.value == maxUsage).time;

    final label = 'resource_chart.cpu_chart_screen_reader_explanation'.tr(
      namedArgs: {
        'period': 'resource_chart.${period.name}'.tr(),
        'lastValue': lastValue.toStringAsFixed(1),
        'averageUsage': averageUsage.toStringAsFixed(1),
        'maxUsage': maxUsage.toStringAsFixed(1),
        'maxUsageTime': DateFormat('HH:mm dd MMMM', context.locale.languageCode)
            .format(maxUsageTime),
      },
    );

    return label;
  }
}