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import * as Config from 'config'
export enum Step {
Prepare,
Work,
Rest,
End,
}
export function prettyPrintStep(step: Step): string {
if (step === Step.Prepare)
return "Prepare"
else if (step === Step.Work)
return "Work"
else if (step === Step.Rest)
return "Rest"
else
return "End"
}
export interface State {
step: Step,
remaining: number,
tabata: number,
cycle: number,
}
export function getAt(config: Config.Config, elapsed: number): State {
const cycleDuration = config.work + config.rest
const tabataDuration = config.prepare + (config.cycles * cycleDuration)
if (elapsed >= tabataDuration * config.tabatas) {
return {
step: Step.End,
remaining: 0,
tabata: config.tabatas,
cycle: config.cycles,
}
} else {
const currentTabataElapsed = elapsed % tabataDuration
let step, remaining
if (currentTabataElapsed < config.prepare) {
step = Step.Prepare
remaining = config.prepare - currentTabataElapsed
} else {
const currentCycleElapsed = (currentTabataElapsed - config.prepare) % cycleDuration
if (currentCycleElapsed < config.work) {
step = Step.Work
remaining = config.work - currentCycleElapsed
} else {
step = Step.Rest
remaining = config.work + config.rest - currentCycleElapsed
}
}
const tabata = Math.floor(elapsed / tabataDuration) + 1
const cycle =
currentTabataElapsed < config.prepare
? 1
: Math.floor((currentTabataElapsed - config.prepare) / cycleDuration) + 1
return { step, remaining, tabata, cycle }
}
}
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