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import { useNavigation } from '@react-navigation/native';
import { NativeStackNavigationProp } from '@react-navigation/native-stack';
import {
DATE_PICKER_TIME_SLOT,
type DatePickerConfirmMeta,
type DateRangeValue,
} from '@repo/ui/components/DatePicker';
import type { QuickSelectValue } from '@repo/ui/components/QuickSelect';
import { findMatchingQuickSelectValue } from '@repo/ui/components/QuickSelect/utils';
import {
buildSummaryDateText,
buildSummaryValueText,
} from '@/utils/timeOffSummary';
import {
useTimeOffActionsSelector,
useTimeOffStateSelector,
} from '../../TimeOff/context';
import { TimeOffStackParamList, TimeOffStep } from '../../TimeOff/types';
import { isDisabledTimeOffDate, normalizeDateValue } from '../utils';
import {
getDraftSlotState,
getTimeSlotOrDefault,
isSameQuickSelectValue,
toDatePickerRange,
toDateSelectionValue,
} from './helpers';
import { useChooseDateSelectionState } from './useChooseDateSelectionState';
import { useQuickSelectOptions } from './useQuickSelectOptions';
const isTodaySingleDaySelection = (value: QuickSelectValue) => {
Iif (!value.startDate || !value.endDate) {
return false;
}
const isSingleDay =
value.startDate.toDateString() === value.endDate.toDateString();
if (!isSingleDay) {
return false;
}
return value.startDate.toDateString() === new Date().toDateString();
};
export const useChooseDate = () => {
const navigation =
useNavigation<NativeStackNavigationProp<TimeOffStackParamList>>();
const form = useTimeOffStateSelector(state => state.form);
const isDatePickerOpen = useTimeOffStateSelector(
state => state.isDatePickerOpen,
);
const changeDate = useTimeOffActionsSelector(actions => actions.changeDate);
const setDatePickerOpen = useTimeOffActionsSelector(
actions => actions.setDatePickerOpen,
);
const {
holidays,
makeUpWorkdays,
quickSelectOptions,
defaultSuggestedValue,
} = useQuickSelectOptions();
const committedSelection = useMemo<QuickSelectValue | null>(() => {
if (!form.start || !form.end) {
return null;
}
return {
startDate: form.start,
endDate: form.end,
timeSlot: getTimeSlotOrDefault(form.start, form.end),
};
}, [form.end, form.start]);
const firstVisibleQuickSelectValue = useMemo(
() => quickSelectOptions[0]?.value || defaultSuggestedValue,
[defaultSuggestedValue, quickSelectOptions],
);
const initialSelection = useMemo(() => {
if (!committedSelection) {
return firstVisibleQuickSelectValue;
}
const matchedCommittedSelection = findMatchingQuickSelectValue(
committedSelection,
quickSelectOptions,
);
if (matchedCommittedSelection) {
return matchedCommittedSelection;
}
if (isTodaySingleDaySelection(committedSelection)) {
const matchedToday = findMatchingQuickSelectValue(
committedSelection,
quickSelectOptions,
);
Iif (matchedToday) {
return matchedToday;
}
}
return committedSelection;
}, [committedSelection, firstVisibleQuickSelectValue, quickSelectOptions]);
const {
selectedValue,
datePickerValue,
datePickerTimeSlot,
datePickerRangeStartTimeSlot,
datePickerRangeEndTimeSlot,
datePickerActiveRangeSelection,
setSelectedValue,
setDatePickerValue,
setDatePickerTimeSlot,
setDatePickerRangeStartTimeSlot,
setDatePickerRangeEndTimeSlot,
setDatePickerActiveRangeSelection,
syncSelectionState,
} = useChooseDateSelectionState({
initialSelectedValue: initialSelection,
});
const initializedDefaultRef = useRef(false);
const lastCommittedSelectionRef = useRef<QuickSelectValue | null>(null);
const latestDatePickerDraftRef = useRef({
value: datePickerValue,
timeSlot: datePickerTimeSlot,
});
useEffect(() => {
latestDatePickerDraftRef.current = {
value: datePickerValue,
timeSlot: datePickerTimeSlot,
};
}, [datePickerTimeSlot, datePickerValue]);
// One-time default commit when the form is empty.
useEffect(() => {
if (initializedDefaultRef.current) {
return;
}
if (committedSelection) {
initializedDefaultRef.current = true;
return;
}
Eif (
firstVisibleQuickSelectValue.startDate &&
firstVisibleQuickSelectValue.endDate
) {
syncSelectionState(firstVisibleQuickSelectValue);
changeDate(
firstVisibleQuickSelectValue.startDate,
firstVisibleQuickSelectValue.endDate,
);
}
initializedDefaultRef.current = true;
}, [
changeDate,
committedSelection,
firstVisibleQuickSelectValue,
syncSelectionState,
]);
// Keep local selection aligned with committed form value.
useEffect(() => {
if (!committedSelection) {
lastCommittedSelectionRef.current = null;
return;
}
if (
isSameQuickSelectValue(
lastCommittedSelectionRef.current,
committedSelection,
)
) {
return;
}
syncSelectionState(committedSelection);
lastCommittedSelectionRef.current = committedSelection;
}, [committedSelection, syncSelectionState]);
const quickSelectValue = useMemo(() => {
const matched = findMatchingQuickSelectValue(
selectedValue,
quickSelectOptions,
);
if (matched) {
return matched;
}
return null;
}, [quickSelectOptions, selectedValue]);
const disabledDates = useCallback(
(date: unknown) => {
const normalizedDate = normalizeDateValue(date);
if (!normalizedDate) {
return false;
}
return isDisabledTimeOffDate({
date: normalizedDate,
holidays,
makeUpWorkdays,
});
},
[holidays, makeUpWorkdays],
);
const toggleDatePicker = useCallback(() => {
const next = !isDatePickerOpen;
if (next) {
const normalizedSelectedValue = disabledDates(selectedValue.startDate)
? toDateSelectionValue(null, null, DATE_PICKER_TIME_SLOT.ALL_DAY)
: selectedValue;
setDatePickerValue(toDatePickerRange(normalizedSelectedValue));
const draftSlotState = getDraftSlotState(
normalizedSelectedValue.startDate,
normalizedSelectedValue.endDate,
normalizedSelectedValue.timeSlot,
);
setDatePickerTimeSlot(
draftSlotState.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerRangeStartTimeSlot(
draftSlotState.rangeStartTimeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerRangeEndTimeSlot(
draftSlotState.rangeEndTimeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerActiveRangeSelection(draftSlotState.activeRangeSelection);
latestDatePickerDraftRef.current = {
value: toDatePickerRange(normalizedSelectedValue),
timeSlot: draftSlotState.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
};
}
setDatePickerOpen(next);
}, [
disabledDates,
isDatePickerOpen,
selectedValue,
setDatePickerActiveRangeSelection,
setDatePickerOpen,
setDatePickerRangeEndTimeSlot,
setDatePickerRangeStartTimeSlot,
setDatePickerTimeSlot,
setDatePickerValue,
]);
const handleChangeQuickSelect = useCallback(
(value: QuickSelectValue) => {
setSelectedValue(value);
setDatePickerValue(toDatePickerRange(value));
setDatePickerTimeSlot(value.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY);
setDatePickerRangeStartTimeSlot(
value.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerRangeEndTimeSlot(
value.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerActiveRangeSelection('start');
latestDatePickerDraftRef.current = {
value: toDatePickerRange(value),
timeSlot: value.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
};
Eif (value.startDate && value.endDate) {
changeDate(value.startDate, value.endDate);
}
},
[
changeDate,
setDatePickerActiveRangeSelection,
setDatePickerRangeEndTimeSlot,
setDatePickerRangeStartTimeSlot,
setDatePickerTimeSlot,
setDatePickerValue,
setSelectedValue,
],
);
const handleSelectDate = useCallback(
(value: DateRangeValue | Date | null, meta?: DatePickerConfirmMeta) => {
if (!value || typeof value !== 'object' || !('startDate' in value)) {
return;
}
const draftSlotState = getDraftSlotState(
value.startDate,
value.endDate,
meta?.timeSlot || DATE_PICKER_TIME_SLOT.ALL_DAY,
);
const nextActiveTimeSlot =
meta?.timeSlot ||
draftSlotState.timeSlot ||
DATE_PICKER_TIME_SLOT.ALL_DAY;
setDatePickerValue(value);
setDatePickerTimeSlot(nextActiveTimeSlot);
setDatePickerRangeStartTimeSlot(
meta?.rangeStartTimeSlot ||
draftSlotState.rangeStartTimeSlot ||
DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerRangeEndTimeSlot(
meta?.rangeEndTimeSlot ||
draftSlotState.rangeEndTimeSlot ||
DATE_PICKER_TIME_SLOT.ALL_DAY,
);
setDatePickerActiveRangeSelection(
meta?.activeRangeSelection || draftSlotState.activeRangeSelection,
);
latestDatePickerDraftRef.current = {
value,
timeSlot: nextActiveTimeSlot,
};
},
[
setDatePickerActiveRangeSelection,
setDatePickerRangeEndTimeSlot,
setDatePickerRangeStartTimeSlot,
setDatePickerTimeSlot,
setDatePickerValue,
],
);
const handleConfirm = useCallback(() => {
const { value: latestDatePickerValue, timeSlot: latestDatePickerTimeSlot } =
latestDatePickerDraftRef.current;
const nextSelectedValue = {
startDate: latestDatePickerValue.startDate,
endDate: latestDatePickerValue.endDate,
timeSlot: latestDatePickerTimeSlot,
};
setSelectedValue(nextSelectedValue);
Eif (nextSelectedValue.startDate && nextSelectedValue.endDate) {
changeDate(nextSelectedValue.startDate, nextSelectedValue.endDate);
}
navigation.navigate(TimeOffStep.REASON);
setDatePickerOpen(false);
}, [changeDate, navigation, setDatePickerOpen, setSelectedValue]);
const summaryDateText = useMemo(
() => buildSummaryDateText(selectedValue.startDate),
[selectedValue.startDate],
);
const summaryValueText = useMemo(
() =>
buildSummaryValueText({
startDate: selectedValue.startDate,
endDate: selectedValue.endDate,
timeSlot: selectedValue.timeSlot || undefined,
holidays,
makeUpWorkdays,
}),
[
holidays,
makeUpWorkdays,
selectedValue.endDate,
selectedValue.startDate,
selectedValue.timeSlot,
],
);
return {
state: {
isOpenDatePicker: isDatePickerOpen,
selectedValue,
quickSelectValue,
quickSelectOptions,
datePickerValue,
datePickerTimeSlot,
datePickerRangeStartTimeSlot,
datePickerRangeEndTimeSlot,
datePickerActiveRangeSelection,
summaryDateText,
summaryValueText,
},
calendar: {
disabledDates,
},
actions: {
toggleDatePicker,
handleChangeQuickSelect,
handleSelectDate,
handleConfirm,
},
};
};
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