36 lines
1.2 KiB
TypeScript
36 lines
1.2 KiB
TypeScript
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export function normalizeTemperatureSymbol(value?: string | null) {
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return String(value || "").toUpperCase().includes("F") ? "°F" : "°C";
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}
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export function formatTemperatureValue(
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value: number | null | undefined,
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symbol?: string | null,
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options?: { signed?: boolean; digits?: number },
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) {
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const numeric = Number(value);
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if (!Number.isFinite(numeric)) return "--";
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const digits = options?.digits ?? 0;
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const sign = options?.signed && numeric >= 0 ? "+" : "";
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return `${sign}${numeric.toFixed(digits)}${normalizeTemperatureSymbol(symbol)}`;
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}
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export function normalizeTemperatureLabel(
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label?: string | null,
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fallbackSymbol?: string | null,
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) {
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const raw = String(label || "").trim();
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if (!raw) return "";
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const normalizedSymbol = normalizeTemperatureSymbol(fallbackSymbol);
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let next = raw.replace(/℃/gi, "°C");
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next = next.replace(/°?([CF])\b/gi, (_, unit: string) => `°${unit.toUpperCase()}`);
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if (!/[°][CF]/.test(next) && /\d/.test(next)) {
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next = `${next}${normalizedSymbol}`;
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}
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if (normalizedSymbol === "°F") {
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next = next.replace(/°C/g, "°F");
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} else {
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next = next.replace(/°F/g, "°C");
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}
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return next;
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}
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