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// Time-related utility functions
// Helper function to format time in various formats (MM:SS, HH:MM:SS, HH:MM:SS:CS, HH:MM:SS:FF)
export const formatTimeCode = (
timeInSeconds: number,
format: "MM:SS" | "HH:MM:SS" | "HH:MM:SS:CS" | "HH:MM:SS:FF" = "HH:MM:SS:CS",
fps = 30
): string => {
const hours = Math.floor(timeInSeconds / 3600);
const minutes = Math.floor((timeInSeconds % 3600) / 60);
const seconds = Math.floor(timeInSeconds % 60);
const centiseconds = Math.floor((timeInSeconds % 1) * 100);
const frames = Math.floor((timeInSeconds % 1) * fps);
switch (format) {
case "MM:SS":
return `${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}`;
case "HH:MM:SS":
return `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}`;
case "HH:MM:SS:CS":
return `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}:${centiseconds.toString().padStart(2, "0")}`;
case "HH:MM:SS:FF":
return `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}:${frames.toString().padStart(2, "0")}`;
}
};
export const parseTimeCode = (
timeCode: string,
format: "MM:SS" | "HH:MM:SS" | "HH:MM:SS:CS" | "HH:MM:SS:FF" = "HH:MM:SS:CS",
fps = 30
): number | null => {
if (!timeCode || typeof timeCode !== "string") return null;
// Remove any extra whitespace
const cleanTimeCode = timeCode.trim();
try {
switch (format) {
case "MM:SS": {
const parts = cleanTimeCode.split(":");
if (parts.length !== 2) return null;
const [minutes, seconds] = parts.map((part) => parseInt(part, 10));
if (isNaN(minutes) || isNaN(seconds)) return null;
if (minutes < 0 || seconds < 0 || seconds >= 60) return null;
return minutes * 60 + seconds;
}
case "HH:MM:SS": {
const parts = cleanTimeCode.split(":");
if (parts.length !== 3) return null;
const [hours, minutes, seconds] = parts.map((part) =>
parseInt(part, 10)
);
if (isNaN(hours) || isNaN(minutes) || isNaN(seconds)) return null;
if (
hours < 0 ||
minutes < 0 ||
seconds < 0 ||
minutes >= 60 ||
seconds >= 60
)
return null;
return hours * 3600 + minutes * 60 + seconds;
}
case "HH:MM:SS:CS": {
const parts = cleanTimeCode.split(":");
if (parts.length !== 4) return null;
const [hours, minutes, seconds, centiseconds] = parts.map((part) =>
parseInt(part, 10)
);
if (
isNaN(hours) ||
isNaN(minutes) ||
isNaN(seconds) ||
isNaN(centiseconds)
)
return null;
if (
hours < 0 ||
minutes < 0 ||
seconds < 0 ||
centiseconds < 0 ||
minutes >= 60 ||
seconds >= 60 ||
centiseconds >= 100
)
return null;
return hours * 3600 + minutes * 60 + seconds + centiseconds / 100;
}
case "HH:MM:SS:FF": {
const parts = cleanTimeCode.split(":");
if (parts.length !== 4) return null;
const [hours, minutes, seconds, frames] = parts.map((part) =>
parseInt(part, 10)
);
if (isNaN(hours) || isNaN(minutes) || isNaN(seconds) || isNaN(frames))
return null;
if (
hours < 0 ||
minutes < 0 ||
seconds < 0 ||
frames < 0 ||
minutes >= 60 ||
seconds >= 60 ||
frames >= fps
)
return null;
return hours * 3600 + minutes * 60 + seconds + frames / fps;
}
}
} catch {
return null;
}
return null;
};
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