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import {getValueType, MASK, valueChecker} from '../config.js'
import PIN_INPUT_ACTION_TYPES from './actionTypes.js'
export const getInitialPinInputReducerState = ({
defaultValue = '',
disabled = false,
mask = MASK.NUMBER,
value
} = {}) => {
const valueType = getValueType({value, defaultValue})
const arrayValue = typeof value === 'string' ? value.split('') : value
const arrayDefaultValue = typeof defaultValue === 'string' ? defaultValue.split('') : defaultValue
let innerValue = value !== undefined ? arrayValue : arrayDefaultValue
innerValue = valueChecker({mask, length: innerValue.length})(innerValue.filter(Boolean).join('')) ? innerValue : []
return {
valueType,
focusPosition: 0,
mask,
innerValue,
checker: valueChecker({mask}),
disabled,
elements: []
}
}
const focus = element => setTimeout(() => element.focus(), 0)
const debouncedFocus = debounce(focus, 20)
const focusElement = element => {
debouncedFocus(element)
}
const onChangeHandler = onChange => (event, state) => {
const {innerValue, focusPosition, valueType} = state
typeof onChange === 'function' &&
onChange(event, {
value: valueType === 'string' ? innerValue.filter(Boolean).join('') : innerValue,
key: innerValue[focusPosition],
index: focusPosition,
innerValue
})
}
export const pinInputReducer = (state, {actionType, payload}) => {
let nextState = Object.assign({}, state)
const {checker, innerValue, focusPosition, elements} = state
const {disabled, mask, node, event = {}} = payload
const {key, shiftKey} = event
const onChange = onChangeHandler(payload.onChange)
let isValidPayloadInnerValue
let newChecker
let isInvalid
let newIndex
let position
switch (actionType) {
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_DISABLED:
nextState = {...state, disabled}
break
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_VALUE:
isValidPayloadInnerValue = valueChecker({
mask: state.mask,
length: payload.innerValue.length
})(payload.innerValue.filter(Boolean).join(''))
if (
isValidPayloadInnerValue &&
!(
innerValue?.length === payload?.innerValue?.length &&
innerValue.every((value, index) => value === payload.innerValue[index])
)
) {
nextState = {
...state,
...{
innerValue: [...payload.innerValue]
}
}
}
break
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_MASK:
newChecker = valueChecker({mask})
isInvalid = innerValue.find(value => !newChecker(value))
nextState = {
...state,
checker: newChecker,
mask,
innerValue: isInvalid ? [] : innerValue
}
break
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_KEY:
if (key.length > 1) {
switch (key) {
case 'ArrowUp':
case 'ArrowDown':
focusElement(elements[focusPosition])
break
case 'ArrowLeft':
nextState = {
...state,
focusPosition: elements[focusPosition - 1] ? focusPosition - 1 : focusPosition
}
focusElement(elements[nextState.focusPosition])
break
case 'ArrowRight':
nextState = {
...state,
focusPosition: elements[focusPosition + 1] ? focusPosition + 1 : focusPosition
}
focusElement(elements[nextState.focusPosition])
break
case 'Backspace':
innerValue[focusPosition] = undefined
nextState = {
...state,
innerValue: [...innerValue],
focusPosition: elements[focusPosition - 1] ? focusPosition - 1 : focusPosition
}
onChange(event, nextState)
break
case 'Delete':
innerValue[focusPosition] = undefined
nextState = {...state, innerValue: [...innerValue]}
onChange(event, nextState)
break
case 'Tab':
newIndex = shiftKey ? focusPosition - 1 : focusPosition + 1
nextState = {
...state,
focusPosition: elements[newIndex] ? newIndex : focusPosition
}
if (newIndex < elements.length && newIndex > 0) {
focusElement(elements[nextState.focusPosition])
}
break
case 'Meta':
default:
break
}
} else if (checker(key)) {
const isKeyChange = innerValue[focusPosition] !== key
if (isKeyChange) {
innerValue[focusPosition] = key
}
nextState = {
...state,
innerValue: isKeyChange ? [...innerValue] : innerValue,
focusPosition: elements[focusPosition + 1] ? focusPosition + 1 : focusPosition
}
if (isKeyChange) {
onChange(event, nextState)
}
focusElement(elements[nextState.focusPosition])
} else {
focusElement(elements[focusPosition])
}
break
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_FOCUS:
position = elements[payload.focusPosition] ? payload.focusPosition : focusPosition
nextState = {...state, focusPosition: position}
focusElement(elements[position])
break
case PIN_INPUT_ACTION_TYPES.SET_PIN_INPUT_ELEMENT:
if (!elements.includes(node)) {
elements[elements.length] = node
nextState = {
...state,
elements: [...elements]
}
}
break
case PIN_INPUT_ACTION_TYPES.REMOVE_PIN_INPUT_ELEMENT:
nextState = {
...state,
elements: elements.filter(element => node !== element)
}
break
default:
break
}
return nextState
}
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