File size: 1,532 Bytes
dbeb485 9205030 dbeb485 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | import { useState, useMemo } from "react";
interface Question {
id: string;
examTypeId: string;
[key: string]: unknown;
}
export function useQuestionSelection(questions: Question[]) {
const [isSelectMode, setIsSelectMode] = useState(false);
const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
const lockedExamType = useMemo(() => {
if (selectedIds.size === 0) return null;
const firstId = Array.from(selectedIds)[0];
const firstQ = questions.find((q) => q.id === firstId);
return firstQ?.examTypeId ?? null;
}, [selectedIds, questions]);
const toggleSelection = (id: string) => {
const q = questions.find((item) => item.id === id);
if (!q) return;
if (lockedExamType && q.examTypeId !== lockedExamType) return;
setSelectedIds((prev) => {
const next = new Set(prev);
if (next.has(id)) next.delete(id);
else next.add(id);
return next;
});
};
const selectAll = () => {
if (lockedExamType) {
setSelectedIds(
new Set(questions.filter((q) => q.examTypeId === lockedExamType).map((q) => q.id)),
);
} else {
setSelectedIds(new Set(questions.map((q) => q.id)));
}
};
const clearSelection = () => setSelectedIds(new Set());
const exitSelectMode = () => {
setIsSelectMode(false);
setSelectedIds(new Set());
};
return {
isSelectMode,
setIsSelectMode,
selectedIds,
lockedExamType,
toggleSelection,
selectAll,
clearSelection,
exitSelectMode,
};
}
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