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Chart,
RadarController,
RadialLinearScale,
PointElement,
LineElement,
Filler,
Tooltip,
Legend,
CategoryScale,
} from "chart.js";
import React, { useEffect, useRef, useState } from "react";
import { CHART_TEST_IDS } from "../../constants/testIds";
// Register Chart.js components at module level (intentional)
// This executes once when the module is first imported, which is the recommended
// approach for Chart.js registration. The check prevents duplicate registration
// in environments where the module might be imported multiple times (e.g., tests).
// Module-level registration is safe because:
// 1. Chart.js registration is global and idempotent
// 2. The overrides check ensures components are only registered once
// 3. Lazy loading of SecurityVisualizationWidget defers this until needed
const isRadarRegistered = Chart.overrides.radar !== undefined;
Eif (!isRadarRegistered) {
Chart.register(
RadarController,
RadialLinearScale,
PointElement,
LineElement,
Filler,
Tooltip,
Legend,
CategoryScale
);
}
interface RadarChartProps {
availabilityLevel: string;
integrityLevel: string;
confidentialityLevel: string;
className?: string;
testId?: string;
}
const RadarChart: React.FC<RadarChartProps> = ({
availabilityLevel = "None",
integrityLevel = "None",
confidentialityLevel = "None",
className = "",
testId = CHART_TEST_IDS.RADAR_CHART,
}) => {
const chartRef = useRef<HTMLCanvasElement>(null);
const chartInstanceRef = useRef<Chart<"radar", number[], string> | null>(
null
);
// Add state to track render errors for testing
const [renderError, setRenderError] = useState<string | null>(null);
// Add state to track dark mode
const [isDarkMode, setIsDarkMode] = useState<boolean>(
document.documentElement.classList.contains("dark")
);
// Remove unused state or rename to indicate it's unused
const [_securityLevels] = useState({
availabilityLevel,
integrityLevel,
confidentialityLevel,
});
// Convert security levels to numerical values
const mapLevelToValue = (level: string): number => {
switch (level) {
case "None":
return 0;
case "Basic":
case "Low":
return 1;
case "Moderate":
return 2;
case "High":
return 3;
case "Very High":
return 4;
default:
return 0;
}
};
// Add effect to listen for theme changes
useEffect(() => {
// Create a MutationObserver to watch for changes to the document element's class list
const observer = new MutationObserver((mutations) => {
mutations.forEach((mutation) => {
if (
mutation.attributeName === "class" &&
mutation.target === document.documentElement
) {
const newDarkMode =
document.documentElement.classList.contains("dark");
// Only update state if the mode actually changed
if (newDarkMode !== isDarkMode) {
setIsDarkMode(newDarkMode);
}
}
});
});
// Start observing
observer.observe(document.documentElement, { attributes: true });
// Cleanup observer on unmount
return () => observer.disconnect();
}, [isDarkMode]);
useEffect(() => {
Iif (!chartRef.current) return;
try {
// Cleanup previous chart instance
if (chartInstanceRef.current) {
chartInstanceRef.current.destroy();
}
// Add null checking for chart context
const ctx = chartRef.current?.getContext("2d");
if (!ctx) {
setRenderError("Could not get canvas context");
return;
}
const availabilityValue = mapLevelToValue(availabilityLevel);
const integrityValue = mapLevelToValue(integrityLevel);
const confidentialityValue = mapLevelToValue(confidentialityLevel);
// Set chart colors based on theme - now using isDarkMode state
const backgroundColor = isDarkMode
? "rgba(0, 204, 102, 0.2)"
: "rgba(0, 102, 51, 0.2)";
const borderColor = isDarkMode ? "#00cc66" : "#006633";
const gridColor = isDarkMode
? "rgba(255, 255, 255, 0.1)"
: "rgba(0, 0, 0, 0.1)";
const textColor = isDarkMode ? "#f0f0f0" : "#222222";
// Create chart
chartInstanceRef.current = new Chart(ctx, {
type: "radar",
data: {
labels: ["Availability", "Integrity", "Confidentiality"],
datasets: [
{
label: "Security Profile",
data: [availabilityValue, integrityValue, confidentialityValue],
backgroundColor: backgroundColor,
borderColor: borderColor,
borderWidth: 2,
pointBackgroundColor: borderColor,
pointBorderColor: "#fff",
pointHoverBackgroundColor: "#fff",
pointHoverBorderColor: borderColor,
},
],
},
options: {
responsive: true,
maintainAspectRatio: true,
scales: {
r: {
angleLines: {
color: gridColor,
},
grid: {
color: gridColor,
},
pointLabels: {
color: textColor,
font: {
size: 12,
},
},
min: 0,
max: 4,
ticks: {
backdropColor: "transparent",
color: textColor,
z: 100,
stepSize: 1,
font: {
size: 10,
},
callback: function (value) {
const levels = [
"None",
"Basic",
"Moderate",
"High",
"Very High",
];
return levels[value as number] || "";
},
},
beginAtZero: true,
},
},
plugins: {
legend: {
display: false,
labels: {
color: isDarkMode ? "#00cc66" : "#006633",
font: {
family: "'Share Tech Mono', monospace",
size: 12,
},
boxWidth: 15,
boxHeight: 2,
},
},
tooltip: {
callbacks: {
label: function (context) {
const levels = [
"None",
"Basic",
"Moderate",
"High",
"Very High",
];
const value = context.raw as number;
return `${context.label}: ${levels[value] || ""}`;
},
},
},
},
},
});
// Handle resize events to ensure the chart remains responsive
const resizeHandler = () => {
Eif (chartInstanceRef.current) {
chartInstanceRef.current.resize();
}
};
window.addEventListener("resize", resizeHandler);
return () => {
window.removeEventListener("resize", resizeHandler);
Eif (chartInstanceRef.current) {
chartInstanceRef.current.destroy();
}
};
} catch (error) {
// Improved error handling with proper type checking
setRenderError(error instanceof Error ? error.message : String(error));
}
return undefined; // Add explicit return
}, [availabilityLevel, integrityLevel, confidentialityLevel, isDarkMode]); // Added isDarkMode as dependency
// Apply className to container element if provided
const containerClassName = className
? `radar-chart-container ${className}`.trim()
: "radar-chart-container";
return (
<div className={containerClassName} data-testid={`${testId}-container`}>
{renderError ? (
<div data-testid={`${testId}-error`} className="error-message">
Error loading chart: {renderError}
</div>
) : (
<div className="radar-values flex justify-between mb-2">
<div>
<strong>Availability:</strong>{" "}
<span data-testid={CHART_TEST_IDS.RADAR_AVAILABILITY_VALUE}>
{availabilityLevel || "None"}
</span>
</div>
<div>
<strong>Integrity:</strong>{" "}
<span data-testid={CHART_TEST_IDS.RADAR_INTEGRITY_VALUE}>
{integrityLevel || "None"}
</span>
</div>
<div>
<strong>Confidentiality:</strong>{" "}
<span data-testid={CHART_TEST_IDS.RADAR_CONFIDENTIALITY_VALUE}>
{confidentialityLevel || "None"}
</span>
</div>
</div>
)}
<canvas ref={chartRef} data-testid={testId}></canvas>
</div>
);
};
export default RadarChart;
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