File size: 4,683 Bytes
4e1096a | 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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | import { useCallback, useMemo } from 'react';
import { useSidebarStore } from '@/store/sidebarStore';
import { useReaderStore } from '@/store/readerStore';
import { isCfiInLocation } from '@/utils/cfi';
import { flattenSearchResults } from '../components/sidebar/SearchResultsNav';
export function useSearchNav(bookKey: string) {
const { getView, getProgress } = useReaderStore();
const { setSideBarVisible } = useSidebarStore();
const { getSearchNavState, setSearchResultIndex, clearSearch } = useSidebarStore();
const searchNavState = getSearchNavState(bookKey);
const { searchTerm, searchResults, searchResultIndex, searchProgress } = searchNavState;
const progress = getProgress(bookKey);
const currentLocation = useMemo(() => {
return progress?.location;
}, [progress]);
// Flatten search results for navigation
const flattenedResults = useMemo(() => {
if (!searchResults) return [];
return flattenSearchResults(searchResults);
}, [searchResults]);
const totalResults = flattenedResults.length;
const hasSearchResults = searchResults && totalResults > 0;
const showSearchNav = hasSearchResults;
// Get current section label
const currentSection = useMemo(() => {
if (!flattenedResults.length || searchResultIndex >= flattenedResults.length) return '';
return flattenedResults[searchResultIndex]?.sectionLabel || '';
}, [flattenedResults, searchResultIndex]);
// Find results on the current page
const currentPageResults = useMemo(() => {
if (!flattenedResults.length || !currentLocation) return { firstIndex: -1, lastIndex: -1 };
let firstIndex = -1;
let lastIndex = -1;
for (let i = 0; i < flattenedResults.length; i++) {
const result = flattenedResults[i];
if (result && isCfiInLocation(result.cfi, currentLocation)) {
if (firstIndex === -1) firstIndex = i;
lastIndex = i;
}
}
if (firstIndex !== -1) {
setTimeout(() => setSearchResultIndex(bookKey, firstIndex), 0);
}
return { firstIndex, lastIndex };
}, [flattenedResults, currentLocation, bookKey, setSearchResultIndex]);
// Navigate to a specific search result
const navigateToResult = useCallback(
(index: number) => {
if (!flattenedResults.length) return;
if (index < 0 || index >= flattenedResults.length) return;
const result = flattenedResults[index];
if (result) {
setSearchResultIndex(bookKey, index);
getView(bookKey)?.goTo(result.cfi);
}
},
[bookKey, flattenedResults, setSearchResultIndex, getView],
);
const handleShowResults = useCallback(() => {
setSideBarVisible(true);
}, [setSideBarVisible]);
const handleCloseSearch = useCallback(() => {
clearSearch(bookKey);
getView(bookKey)?.clearSearch();
}, [clearSearch, bookKey, getView]);
// Navigate to the previous page with results (last result before current page)
const handlePreviousResult = useCallback(() => {
const { firstIndex } = currentPageResults;
if (firstIndex > 0) {
// Navigate to the result just before the first result on current page
navigateToResult(firstIndex - 1);
} else if (firstIndex === -1 && searchResultIndex > 0) {
// No results on current page, just go to previous result
navigateToResult(searchResultIndex - 1);
}
}, [currentPageResults, searchResultIndex, navigateToResult]);
// Navigate to the next page with results (first result after current page)
const handleNextResult = useCallback(() => {
const { lastIndex } = currentPageResults;
if (lastIndex >= 0 && lastIndex < totalResults - 1) {
// Navigate to the result just after the last result on current page
navigateToResult(lastIndex + 1);
} else if (lastIndex === -1 && searchResultIndex < totalResults - 1) {
// No results on current page, just go to next result
navigateToResult(searchResultIndex + 1);
}
}, [currentPageResults, totalResults, searchResultIndex, navigateToResult]);
// Check if there are results before/after the current page
const hasPreviousPage =
currentPageResults.firstIndex > 0 ||
(currentPageResults.firstIndex === -1 && searchResultIndex > 0);
const hasNextPage =
(currentPageResults.lastIndex >= 0 && currentPageResults.lastIndex < totalResults - 1) ||
(currentPageResults.lastIndex === -1 && searchResultIndex < totalResults - 1);
return {
searchTerm,
searchProgress,
currentSection,
searchResultIndex,
totalResults,
showSearchNav,
hasPreviousPage,
hasNextPage,
handleShowResults,
handleCloseSearch,
handlePreviousResult,
handleNextResult,
};
}
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