Jason Stedwell
15 lines
587 B
TypeScript
15 lines
587 B
TypeScript
/**
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* Convert a polling interval in seconds into a cron expression.
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* Pure and side-effect free so it can be unit-tested without touching the DB.
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* - < 60s → every minute ("* * * * *")
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* - < 60 minutes → every N minutes ("*\/15 * * * *")
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* - otherwise → every N hours ("0 *\/6 * * *")
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*/
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export function secondsToCron(seconds: number): string {
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if (seconds < 60) return '* * * * *'
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const minutes = Math.round(seconds / 60)
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if (minutes < 60) return `*/${minutes} * * * *`
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const hours = Math.round(minutes / 60)
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return `0 */${hours} * * *`
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}
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