nine-limit
Version:
Lunar calendar conversion tool whose precision is up to minute unit.
272 lines (241 loc) • 8.95 kB
JavaScript
/**
* @copyright 2016 commenthol
* @license MIT
*/
import moment from 'moment'
import LunarCalendar from 'lunar-calendar'
import ZhCnCommon from '../locales/zh-cn/common.json'
import ZhTwCommon from '../locales/zh-tw/common.json'
import ZhCnEarthlyBranches from '../locales/zh-cn/earthly-branches.json'
import ZhTWEarthlyBranches from '../locales/zh-tw/earthly-branches.json'
import ZhCnHeavenlyStems from '../locales/zh-cn/heavenly-stems.json'
import ZhTWHeavenlyStems from '../locales/zh-tw/heavenly-stems.json'
import ZhCnFiveElements from '../locales/zh-cn/five-elements.json'
import ZhTWFiveElements from '../locales/zh-tw/five-elements.json'
import ZhCnTwoLimits from '../locales/zh-cn/two-limits.json'
import ZhTWTwoLimits from '../locales/zh-tw/two-limits.json'
const jsonsOfLocale = {
'zh-CN': {
'common': ZhCnCommon,
'earthlyBranches': ZhCnEarthlyBranches,
'heavenlyStems': ZhCnHeavenlyStems,
'fiveElements': ZhCnFiveElements,
'twoLimits': ZhCnTwoLimits
},
'zh-TW': {
'common': ZhTwCommon,
'earthlyBranches': ZhTWEarthlyBranches,
'heavenlyStems': ZhTWHeavenlyStems,
'fiveElements': ZhTWFiveElements,
'twoLimits': ZhTWTwoLimits
}
}
const NINE_LIMIT_FORMAT = [
'yearLimit', 'monthLimit',
'largeSegmentLimit', 'mediumSegmentLimit', 'smallSegmentLimit',
'dayLimit', 'hourLimit', 'largeQuaterLimit', 'smallQuaterLimit'
]
const locales = ['zh-TW', 'zh-CN']
class NineLimit {
constructor (year, month, day, hour, minute) {
this.locale = 'zh-TW'
this.solarDateTime = moment().utcOffset(8)
this.isLargeSegmentIncludesLastSegment = false
this.initialize()
this.setSolarDateTime(year, month, day, hour, minute)
}
initialize () {
const { common } = this.getTranslation()
this.result = {
yearLimit: {
label: common['yearLimit'],
value: '甲子',
unit: common['yearLimitUnit']
},
monthLimit: {
label: common['monthLimit'],
value: '甲子',
unit: common['monthLimitUnit']
},
largeSegmentLimit: {
label: common['largeSegmentLimit'],
value: '子',
unit: common['largeSegmentLimitUnit']
},
mediumSegmentLimit: {
label: common['mediumSegmentLimit'],
value: '寅',
unit: common['mediumSegmentLimitUnit']
},
smallSegmentLimit: {
label: common['smallSegmentLimit'],
value: '木',
unit: common['smallSegmentLimitUnit']
},
dayLimit: {
label: common['dayLimit'],
value: '甲子',
unit: common['dayLimitUnit']
},
hourLimit: {
label: common['hourLimit'],
value: '甲子',
unit: common['hourLimitUnit']
},
largeQuaterLimit: {
label: common['largeQuaterLimit'],
value: '寅',
unit: common['largeQuaterLimitUnit']
},
smallQuaterLimit: {
label: common['smallQuaterLimit'],
value: '陽',
unit: common['smallQuaterLimitUnit']
}
}
}
getTranslation () {
return locales.includes(this.locale)
? jsonsOfLocale[this.locale]
: jsonsOfLocale['zh-TW']
}
setLocale (locale) {
if (['zh-CN', 'zh-TW'].includes(locale)) this.locale = locale
this.initialize()
return this
}
setSolarDateTime (year, month, day, hour, minute) {
if (year && month && day) {
if (typeof year !== 'number') throw TypeError('Year is not number.')
if (typeof month !== 'number') throw TypeError('Month is not number.')
if (typeof day !== 'number') throw TypeError('Day is not number.')
if (typeof hour !== 'number') throw TypeError('Hour is not number.')
if (typeof minute !== 'number') throw TypeError('Minute is not number.')
this.solarDateTime = moment()
.year(year)
.month(month - 1)
.date(day)
.hour(hour)
.minute(minute)
this.lunarDate = LunarCalendar.solarToLunar(
this.getSolarYear(), this.getSolarMonth(), this.getSolarDay()
)
this.isLargeSegmentIncludesLastSegment = this.lunarDate.monthDays >= 28
} else if (!year && !month & !day) {
this.solarDateTime = moment().utcOffset(8)
this.lunarDate = LunarCalendar.solarToLunar(
this.getSolarYear(), this.getSolarMonth(), this.getSolarDay()
)
this.isLargeSegmentIncludesLastSegment = this.lunarDate.monthDays >= 28
} else {
throw TypeError('Input value are not valid.')
}
this.lunarDate = LunarCalendar.solarToLunar(
this.getSolarYear(), this.getSolarMonth(), this.getSolarDay()
)
return this
}
getSolarYear () {
return this.solarDateTime.year()
}
getSolarMonth () {
return this.solarDateTime.month() + 1
}
getSolarDay () {
return this.solarDateTime.date()
}
getSolarHour () {
return this.solarDateTime.hour()
}
getSolarMinute () {
return this.solarDateTime.minute()
}
_compileYearLimit () {
this.result.yearLimit.value = this.lunarDate.GanZhiYear
}
_compileMonthLimit () {
this.result.monthLimit.value = this.lunarDate.GanZhiMonth
}
/**
* 2.5天為一組，以寅為開頭取農曆月算出大段極。
* 算出落在某個大段，然後以餘數為基礎，從該大段的頭開始換算成小時，再以5小時為一組
* 以寅為開頭，算出中段極。
* 最後小段極為五小時的第幾位以木火土金水為排序取值。
*/
_compileSegmentLimit () {
const dateOrder = this.lunarDate.lunarDay
const hour = this.getSolarHour()
// 若超過整點再加1
const hourOrder = (dateOrder - 1) + (hour >= 12 && this.getSolarMinute > 0 ? 0.5 : 0)
const qOfLargeSegment = Math.ceil(hourOrder / 2.5 + (hourOrder % 2.5 === 0 ? 1 : 0))
const rOfLargeSegment = hourOrder % 2.5
const { earthlyBranches, fiveElements } = this.getTranslation()
this.result.largeSegmentLimit.value = earthlyBranches[`e${qOfLargeSegment}`]
const qOfMediumSegment = Math.ceil((rOfLargeSegment * 24 + hour + (this.getSolarMinute > 0 ? 1 : 0)) / 5)
const rOfMediumSegment = ((rOfLargeSegment * 24 + hour + (this.getSolarMinute > 0 ? 1 : 0)) % 5) + 1
this.result.mediumSegmentLimit.value = earthlyBranches[`e${qOfMediumSegment}`]
this.result.smallSegmentLimit.value = fiveElements[`f${rOfMediumSegment}`]
}
_compileDayLimit () {
this.result.dayLimit.value = this.lunarDate.GanZhiDay
}
_compileHourLimit () {
const { earthlyBranches, heavenlyStems } = this.getTranslation()
const startHeavenlyHour = (() => {
const date = this.result.dayLimit.value
if (date.includes(heavenlyStems['h1']) || date.includes(heavenlyStems['h6'])) return 1
if (date.includes(heavenlyStems['h2']) || date.includes(heavenlyStems['h7'])) return 3
if (date.includes(heavenlyStems['h3']) || date.includes(heavenlyStems['h8'])) return 5
if (date.includes(heavenlyStems['h4']) || date.includes(heavenlyStems['h9'])) return 7
if (date.includes(heavenlyStems['h5']) || date.includes(heavenlyStems['h10'])) return 9
})()
const hour = this.getSolarHour() + (this.getSolarMinute > 0 ? 1 : 0)
// 以e1=寅時為開頭 所以要為移往前2位
const lunarHour = (() => {
if (hour < 2) return 11
else if (hour % 2 === 0) {
return (hour / 2) - 1
} else return ((hour + 1) / 2) - 1
}) ()
const heavenlyHourOrder = (() => {
let orderBasedNormalEarthlyOrder = 0
if (lunarHour + 2 > 12) orderBasedNormalEarthlyOrder = lunarHour + 2 - 12
else orderBasedNormalEarthlyOrder = lunarHour + 2
if (startHeavenlyHour + orderBasedNormalEarthlyOrder - 1 > 10) {
return startHeavenlyHour + orderBasedNormalEarthlyOrder - 1 - 10
} else {
return startHeavenlyHour + orderBasedNormalEarthlyOrder - 1
}
})()
// console.log(heavenlyHourOrder)
this.result.hourLimit.value = heavenlyStems[`h${heavenlyHourOrder}`] + earthlyBranches[`e${lunarHour}`]
}
_compileQuaterLimit () {
const { earthlyBranches, twoLimits } = this.getTranslation()
const hour = this.getSolarHour()
const minute = this.getSolarMinute()
const quaterMins = (hour % 2 === 0 ? 1 : 0) * 60 + minute
this.result.largeQuaterLimit.value = earthlyBranches[`e${Math.ceil(quaterMins / 10 + (quaterMins % 10 === 0 ? 1 : 0))}`]
this.result.smallQuaterLimit.value = quaterMins % 10 < 5 ? twoLimits['t1'] : twoLimits['t2']
}
_compile () {
this._compileYearLimit()
this._compileMonthLimit()
this._compileSegmentLimit()
this._compileDayLimit()
this._compileHourLimit()
this._compileQuaterLimit()
return this
}
toObject () {
this._compile()
return this.result
}
toString () {
this._compile()
return NINE_LIMIT_FORMAT.map(item => {
return this.result[item].value + this.result[item].unit
}).join(' ')
}
}
export default NineLimit