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refac: convert and get bath text #24

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refac: convert and get bath text #24

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a1b615b
refac: convert and get bath text
khris-xp Oct 27, 2023
fa9a170
feat: not convert very small amount
khris-xp Oct 27, 2023
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100 changes: 26 additions & 74 deletions src/thai-baht-text.js
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Original file line number Diff line number Diff line change
@@ -1,120 +1,72 @@
/**
* @author Jirachai Chansivanon <[email protected]>
* @see {@link https://github.com/antronic/that-baht-text-js|GitHub}
*/

// options

// Constants
const MAX_POSITION = 6
const UNIT_POSITION = 0
const TEN_POSITION = 1

const PRIMARY_UNIT = 'บาท'
const SECONDARY_UNIT = 'สตางค์'
const WHOLE_NUMBER_TEXT = 'ถ้วน'

const NUMBER_TEXTS = 'ศูนย์,หนึ่ง,สอง,สาม,สี่,ห้า,หก,เจ็ด,แปด,เก้า,สิบ'.split(',')
const UNIT_TEXTS = 'สิบ,ร้อย,พัน,หมื่น,แสน,ล้าน'.split(',')

const getIntegerDigits = numberInput => parseInt(numberInput.split('.')[0], 10).toString()
const getFractionalDigits = numberInput => parseInt(numberInput.split('.')[1], 10).toString()

const hasFractionalDigits = numberInput => numberInput !== undefined && numberInput != '0'

const isZeroValue = number => number == 0
const isUnitPosition = position => position == UNIT_POSITION
const isTenPosition = position => position % MAX_POSITION == TEN_POSITION
const isMillionsPosition = position => (position >= MAX_POSITION && position % MAX_POSITION == 0)
const isLastPosition = (position, lengthOfDigits) => position + 1 < lengthOfDigits

const reverseNumber = (number) => {
const numberStr = number.toString()
return numberStr.split('').reverse().join('')
}

const getBathUnit = (position, number) => {
let unitText = ''

if (!isUnitPosition(position)) {
unitText = UNIT_TEXTS[Math.abs(position - 1) % MAX_POSITION]
}

if (isZeroValue(number) && !isMillionsPosition(position)) {
unitText = ''
}

return unitText
}
// Helper Functions
const reverseNumber = (number) => number.toString().split('').reverse().join('')

const getBathText = (position, number, lengthOfDigits) => {
let numberText = NUMBER_TEXTS[number]

if (isZeroValue(number)) {
if (number === 0) {
return ''
}

if (isTenPosition(position) && number == 1) {
numberText = ''
}

if (isTenPosition(position) && number == 2) {
numberText = 'ยี่'
if (position % MAX_POSITION === 1 && number === 1) {
numberText = lengthOfDigits === 2 ? 'เอ็ด' : ''
}

if (isMillionsPosition(position) && isLastPosition(position, lengthOfDigits) && number == 1) {
numberText = 'เอ็ด'
}

if (lengthOfDigits == 2 && isLastPosition(position, lengthOfDigits) && number == 1) {
numberText = 'เอ็ด'
}

if (lengthOfDigits > 1 && isUnitPosition(position) && number == 1) {
if (lengthOfDigits > 1 && position % MAX_POSITION === 0 && number === 1) {
numberText = 'เอ็ด'
}

return numberText
}

// convert function without async
const convert = (numberInput) => {
const numberReverse = reverseNumber(numberInput)
let textOutput = ''
// console.log('>', numberReverse.split(''))

numberReverse.split('').forEach((number, i) => {
textOutput = `${getBathText(i, number, numberReverse.length)}${getBathUnit(i, number)}${textOutput}`
textOutput = `${getBathText(i, number, numberReverse.length)}${UNIT_TEXTS[Math.abs(i - 1) % MAX_POSITION]}${textOutput}`
})
return textOutput
}

const parseFloatWithPrecision = (number, precision = 2) => {
const numberFloatStr = parseFloat(number).toString().split('.')
const integerUnitStr = numberFloatStr[0]
const fractionalUnitStr = (numberFloatStr.length == 2) ? numberFloatStr[1].substring(0, precision) : '00'
return parseFloat(`${integerUnitStr}.${fractionalUnitStr}`).toFixed(precision)
return textOutput
}

const convertFullMoney = (numberInput) => {
const numberStr = parseFloatWithPrecision(numberInput)
const SMALL_AMOUNT_THRESHOLD = 0.01

const integerDigits = getIntegerDigits(numberStr)
const fractionalDigits = getFractionalDigits(numberStr)
const number = parseFloat(numberInput)

const intTextOutput = convert(integerDigits)
const textOutput = []
if (intTextOutput) {
textOutput.push(`${[intTextOutput, PRIMARY_UNIT].join('')}`)
if (number < 0) {
return `ลบ${convertFullMoney(Math.abs(number))}`
}
if (intTextOutput && !hasFractionalDigits(fractionalDigits)) {
textOutput.push(WHOLE_NUMBER_TEXT)
}
if (hasFractionalDigits(fractionalDigits) && convert(fractionalDigits)) {
textOutput.push(`${[convert(fractionalDigits), SECONDARY_UNIT].join('')}`)

if (number < SMALL_AMOUNT_THRESHOLD) {
return ''
}

return textOutput.join('')
const numberStr = number.toFixed(2)
const [integerPart, fractionalPart] = numberStr.split('.')

const intTextOutput = convert(reverseNumber(integerPart))
const textOutput = [intTextOutput && `${intTextOutput}${PRIMARY_UNIT}`,
fractionalPart && convert(reverseNumber(fractionalPart)) && `${convert(reverseNumber(fractionalPart))}${SECONDARY_UNIT}`].filter(Boolean).join('')

return textOutput || WHOLE_NUMBER_TEXT
}

// Export
if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
module.exports = convertFullMoney
exports.default = convertFullMoney
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