File size: 4,348 Bytes
5710dd0 | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | import { useMemo, useState, useEffect, useCallback } from "react";
import { useQuery, keepPreviousData } from "@tanstack/react-query";
import type { ProjectFile } from "shared/types";
import { bridge } from "@/services";
import { useChatStore } from "@/stores";
import { useDebouncedValue } from "@/hooks/useDebouncedValue";
import { MEDIA_CONFIG } from "@/services/config";
export interface FileItem {
name: string;
path: string;
isDirectory: boolean;
matchPositions?: number[];
}
interface ActiveToken {
trigger: "/" | "@";
start: number;
query: string;
}
const NO_FILES: ProjectFile[] = [];
interface UseFilePickerResult {
showFileMenu: boolean;
fileItems: FileItem[];
selectedIndex: number;
isLoading: boolean;
isStale: boolean;
showMediaOption: boolean;
fileMenuHeaderCount: number;
setSelectedIndex: (index: number) => void;
handleSelectItem: (item: FileItem) => void;
handleFileMenuKey: (e: React.KeyboardEvent) => boolean;
resetFilePicker: () => void;
}
export function useFilePicker(activeToken: ActiveToken | null, onInsertFile: (path: string) => void, onPickMedia: () => void, onCancel: () => void): UseFilePickerResult {
const { isStreaming, draftMedia } = useChatStore();
const canAddMedia = !isStreaming && draftMedia.length < MEDIA_CONFIG.maxCount;
const [selectedIndex, setSelectedIndex] = useState(0);
const showFileMenu = activeToken?.trigger === "@";
const query = activeToken?.query || "";
const debouncedQuery = useDebouncedValue(query, 100);
const searchQuery = useQuery({
queryKey: ["projectFiles", "search", debouncedQuery],
queryFn: () => bridge.getProjectFiles({ query: debouncedQuery || undefined }),
enabled: showFileMenu,
placeholderData: keepPreviousData,
});
const searchResults = searchQuery.data ?? NO_FILES;
const isLoading = searchQuery.isLoading;
const isStale = debouncedQuery !== query || searchQuery.isPlaceholderData;
useEffect(() => {
setSelectedIndex(0);
}, [query]);
const fileItems = useMemo((): FileItem[] => {
return searchResults.slice(0, 50).map((f) => ({
name: f.name,
path: f.path,
isDirectory: f.isDirectory,
matchPositions: f.matchPositions,
}));
}, [searchResults]);
const showMediaOption = canAddMedia && query === "";
const fileMenuHeaderCount = showMediaOption ? 1 : 0;
useEffect(() => {
setSelectedIndex((i) => Math.min(i, Math.max(0, fileMenuHeaderCount + fileItems.length - 1)));
}, [fileMenuHeaderCount, fileItems.length]);
const resetFilePicker = useCallback(() => {
setSelectedIndex(0);
}, []);
const handleFileMenuConfirm = useCallback(() => {
if (showMediaOption && selectedIndex === 0) {
onPickMedia();
return;
}
if (isStale) return;
const item = fileItems[selectedIndex - fileMenuHeaderCount];
if (!item) return;
onInsertFile(item.path);
}, [selectedIndex, showMediaOption, isStale, fileMenuHeaderCount, fileItems, onPickMedia, onInsertFile]);
const handleSelectItem = useCallback(
(item: FileItem) => {
if (isStale) return;
onInsertFile(item.path);
},
[isStale, onInsertFile],
);
const handleFileMenuKey = useCallback(
(e: React.KeyboardEvent): boolean => {
if (!showFileMenu) return false;
const maxIdx = Math.max(0, fileMenuHeaderCount + fileItems.length - 1);
switch (e.key) {
case "ArrowDown":
e.preventDefault();
setSelectedIndex((i) => Math.min(i + 1, maxIdx));
return true;
case "ArrowUp":
e.preventDefault();
setSelectedIndex((i) => Math.max(i - 1, 0));
return true;
case "Tab":
case "Enter":
if (fileMenuHeaderCount + fileItems.length === 0) return false;
e.preventDefault();
handleFileMenuConfirm();
return true;
case "Escape":
e.preventDefault();
onCancel();
return true;
default:
return false;
}
},
[showFileMenu, fileMenuHeaderCount, fileItems, handleFileMenuConfirm, onCancel],
);
return {
showFileMenu,
fileItems,
selectedIndex,
isLoading,
isStale,
showMediaOption,
fileMenuHeaderCount,
setSelectedIndex,
handleSelectItem,
handleFileMenuKey,
resetFilePicker,
};
}
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