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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
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| import { isString } from '../../helpers/strict-type-checks'; | ||
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| import { TimedData } from '../data-layer'; | ||
| import { InternalHorzScaleItem } from '../ihorz-scale-behavior'; | ||
| import { BusinessDay, isBusinessDay, isUTCTimestamp, Time, UTCTimestamp } from './types'; | ||
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| export type TimeConverter = (time: Time) => InternalHorzScaleItem; | ||
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| export function businessDayConverter(time: Time): InternalHorzScaleItem { | ||
| let businessDay = time; | ||
| if (isString(time)) { | ||
| businessDay = stringToBusinessDay(time); | ||
| } | ||
| if (!isBusinessDay(businessDay)) { | ||
| throw new Error('time must be of type BusinessDay'); | ||
| } | ||
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| const date = new Date(Date.UTC(businessDay.year, businessDay.month - 1, businessDay.day, 0, 0, 0, 0)); | ||
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| return { | ||
| timestamp: Math.round(date.getTime() / 1000) as UTCTimestamp, | ||
| businessDay, | ||
| } as unknown as InternalHorzScaleItem; | ||
| } | ||
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| export function timestampConverter(time: Time): InternalHorzScaleItem { | ||
| if (!isUTCTimestamp(time)) { | ||
| throw new Error('time must be of type isUTCTimestamp'); | ||
| } | ||
| return { | ||
| timestamp: time, | ||
| } as unknown as InternalHorzScaleItem; | ||
| } | ||
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| export function selectTimeConverter(data: TimedData<Time>[]): TimeConverter | null { | ||
| if (data.length === 0) { | ||
| return null; | ||
| } | ||
| if (isBusinessDay(data[0].time) || isString(data[0].time)) { | ||
| return businessDayConverter; | ||
| } | ||
| return timestampConverter; | ||
| } | ||
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| const validDateRegex = /^\d\d\d\d-\d\d-\d\d$/; | ||
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| export function convertTime(time: Time): InternalHorzScaleItem { | ||
| if (isUTCTimestamp(time)) { | ||
| return timestampConverter(time); | ||
| } | ||
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| if (!isBusinessDay(time)) { | ||
| return businessDayConverter(stringToBusinessDay(time)); | ||
| } | ||
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| return businessDayConverter(time); | ||
| } | ||
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| export function stringToBusinessDay(value: string): BusinessDay { | ||
| if (process.env.NODE_ENV === 'development') { | ||
| // in some browsers (I look at your Chrome) the Date constructor may accept invalid date string | ||
| // but parses them in 'implementation specific' way | ||
| // for example 2019-1-1 isn't the same as 2019-01-01 (for Chrome both are 'valid' date strings) | ||
| // see https://bugs.chromium.org/p/chromium/issues/detail?id=968939 | ||
| // so, we need to be sure that date has valid format to avoid strange behavior and hours of debugging | ||
| // but let's do this in development build only because of perf | ||
| if (!validDateRegex.test(value)) { | ||
| throw new Error(`Invalid date string=${value}, expected format=yyyy-mm-dd`); | ||
| } | ||
| } | ||
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| const d = new Date(value); | ||
| if (isNaN(d.getTime())) { | ||
| throw new Error(`Invalid date string=${value}, expected format=yyyy-mm-dd`); | ||
| } | ||
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| return { | ||
| day: d.getUTCDate(), | ||
| month: d.getUTCMonth() + 1, | ||
| year: d.getUTCFullYear(), | ||
| }; | ||
| } | ||
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| export function convertStringToBusinessDay(value: TimedData<Time>): void { | ||
| if (isString(value.time)) { | ||
| value.time = stringToBusinessDay(value.time); | ||
| } | ||
| } | ||
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| export function convertStringsToBusinessDays(data: TimedData<Time>[]): void { | ||
| return data.forEach(convertStringToBusinessDay); | ||
| } |
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