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|
import * as Config from 'config'
export type Step
= { name: 'warmup', remaining: number }
| { name: 'prepare', tabata: string, remaining: number }
| { name: 'work', tabata: string, cycle: number, remaining: number }
| { name: 'rest', tabata: string, cycle: number, remaining: number }
| { name: 'end' }
export function prettyPrint(step: Step): string {
switch (step.name) {
case 'warmup':
return 'Warm Up'
case 'prepare':
return `${step.tabata}\nPreparation`
case 'work':
return `${step.tabata}\nWork ${step.cycle}`
case 'rest':
return `${step.tabata}\nRest ${step.cycle}`
case 'end':
return 'End!'
}
}
export function getAt(config: Config.Config, elapsed: number): Step {
if (elapsed < config.warmup) {
return {
name: 'warmup',
remaining: config.warmup - elapsed
}
}
const tabataElapsed = elapsed - config.warmup
const cycleDuration = config.work + config.rest
const tabataDuration = config.prepare + (config.cycles * cycleDuration)
if (tabataElapsed >= tabataDuration * config.tabatas.length) {
return { name: 'end' }
}
const tabata = config.tabatas[Math.floor(tabataElapsed / tabataDuration)]
const currentTabataElapsed = tabataElapsed % tabataDuration
if (currentTabataElapsed < config.prepare) {
return {
name: 'prepare',
tabata,
remaining: config.prepare - currentTabataElapsed
}
} else {
const currentCycleElapsed = (currentTabataElapsed - config.prepare) % cycleDuration
const cycle =
currentTabataElapsed < config.prepare
? 1
: Math.floor((currentTabataElapsed - config.prepare) / cycleDuration) + 1
if (currentCycleElapsed < config.work) {
return {
name: 'work',
tabata,
cycle,
remaining: config.work - currentCycleElapsed
}
} else {
return {
name: 'rest',
tabata,
cycle,
remaining: config.work + config.rest - currentCycleElapsed
}
}
}
}
|
