89 lines
2.7 KiB
TypeScript
89 lines
2.7 KiB
TypeScript
/**
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* Playback unit conversion utilities
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*
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* Jellyfin uses "ticks" for time values where 10 million ticks = 1 second.
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* This module provides type-safe conversion functions to eliminate magic numbers
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* and prevent conversion bugs across the codebase.
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*/
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/**
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* Number of Jellyfin ticks per second (10 million)
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*/
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export const TICKS_PER_SECOND = 10_000_000;
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/**
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* Convert seconds to Jellyfin ticks
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* @param seconds - Time in seconds (e.g., 90.5 for 1 minute 30.5 seconds)
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* @returns Time in Jellyfin ticks
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*/
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export function secondsToTicks(seconds: number): number {
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return Math.floor(seconds * TICKS_PER_SECOND);
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}
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/**
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* Convert Jellyfin ticks to seconds
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* @param ticks - Time in Jellyfin ticks
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* @returns Time in seconds
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*/
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export function ticksToSeconds(ticks: number): number {
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return ticks / TICKS_PER_SECOND;
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}
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/**
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* Convert normalized volume (0-1) to percentage (0-100)
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* Used when sending volume to Jellyfin remote sessions
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* @param volume - Normalized volume (0.0 to 1.0)
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* @returns Volume as percentage (0 to 100)
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*/
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export function volumeToPercent(volume: number): number {
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return Math.floor(Math.max(0, Math.min(1, volume)) * 100);
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}
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/**
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* Convert percentage volume (0-100) to normalized (0-1)
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* Used when receiving volume from Jellyfin remote sessions
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* @param percent - Volume as percentage (0 to 100)
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* @returns Normalized volume (0.0 to 1.0)
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*/
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export function percentToVolume(percent: number): number {
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return Math.max(0, Math.min(100, percent)) / 100;
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}
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/**
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* Format time in seconds to MM:SS display string
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* @param seconds - Time in seconds
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* @returns Formatted string like "3:45" or "12:09"
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*/
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export function formatTime(seconds: number): string {
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const mins = Math.floor(seconds / 60);
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const secs = Math.floor(seconds % 60);
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return `${mins}:${secs.toString().padStart(2, "0")}`;
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}
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/**
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* Format time in seconds to HH:MM:SS display string (for longer content)
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* @param seconds - Time in seconds
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* @returns Formatted string like "1:23:45" or "0:03:45"
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*/
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export function formatTimeLong(seconds: number): string {
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const hours = Math.floor(seconds / 3600);
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const mins = Math.floor((seconds % 3600) / 60);
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const secs = Math.floor(seconds % 60);
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if (hours > 0) {
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return `${hours}:${mins.toString().padStart(2, "0")}:${secs.toString().padStart(2, "0")}`;
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}
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return `${mins}:${secs.toString().padStart(2, "0")}`;
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}
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/**
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* Calculate progress percentage
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* @param position - Current position in seconds
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* @param duration - Total duration in seconds
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* @returns Progress as percentage (0 to 100)
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*/
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export function calculateProgress(position: number, duration: number): number {
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if (duration <= 0) return 0;
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return Math.min(100, Math.max(0, (position / duration) * 100));
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}
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