const MIN_OUT = 10;
const MAX_OUT = 100;

export const normalizeResponseTimes = <T extends Record<K, number>, K extends keyof T>(
	checks: T[],
	key: K
): (T & { normalResponseTime: number })[] => {
	if (!Array.isArray(checks) || checks.length === 0)
		return checks as (T & {
			normalResponseTime: number;
		})[];

	if (checks.length === 1) {
		return [
			{
				...checks[0],
				normalResponseTime: 50,
			},
		];
	}

	const { min, max } = checks.reduce(
		(acc, check) => {
			if (check[key] > acc.max) acc.max = check[key];
			if (check[key] < acc.min) acc.min = check[key];
			return acc;
		},
		{ max: -Infinity, min: Infinity }
	);

	const range = max - min || 1;

	return checks.map((check) => ({
		...check,
		normalResponseTime: MIN_OUT + ((check[key] - min) * (MAX_OUT - MIN_OUT)) / range,
	}));
};