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import { useState, useCallback, useEffect } from "react";
import {
listFiles,
getFile,
createFile,
updateFile,
deleteFile,
VersionConflictError,
type FileSummary,
type FileDetail,
type CreateFileRequest,
type UpdateFileRequest,
} from "../lib/api";
export interface ConflictState {
hasConflict: boolean;
expectedVersion: number;
actualVersion: number;
}
export function useFiles() {
const [files, setFiles] = useState<FileSummary[]>([]);
const [loading, setLoading] = useState(false);
const [error, setError] = useState<string | null>(null);
const [conflict, setConflict] = useState<ConflictState | null>(null);
const fetchFiles = useCallback(async () => {
setLoading(true);
setError(null);
try {
const response = await listFiles();
setFiles(response.files);
} catch (e) {
setError(e instanceof Error ? e.message : "Failed to fetch files");
} finally {
setLoading(false);
}
}, []);
const fetchFile = useCallback(
async (id: string): Promise<FileDetail | null> => {
setError(null);
try {
return await getFile(id);
} catch (e) {
setError(e instanceof Error ? e.message : "Failed to fetch file");
return null;
}
},
[]
);
const saveFile = useCallback(
async (data: CreateFileRequest): Promise<FileDetail | null> => {
setError(null);
try {
const file = await createFile(data);
await fetchFiles(); // Refresh list
return file;
} catch (e) {
setError(e instanceof Error ? e.message : "Failed to save file");
return null;
}
},
[fetchFiles]
);
const editFile = useCallback(
async (id: string, data: UpdateFileRequest): Promise<FileDetail | null> => {
setError(null);
setConflict(null);
try {
const file = await updateFile(id, data);
await fetchFiles(); // Refresh list
return file;
} catch (e) {
if (e instanceof VersionConflictError) {
setConflict({
hasConflict: true,
expectedVersion: e.expectedVersion,
actualVersion: e.actualVersion,
});
return null;
}
setError(e instanceof Error ? e.message : "Failed to update file");
return null;
}
},
[fetchFiles]
);
const clearConflict = useCallback(() => {
setConflict(null);
}, []);
const removeFile = useCallback(
async (id: string): Promise<boolean> => {
setError(null);
try {
await deleteFile(id);
await fetchFiles(); // Refresh list
return true;
} catch (e) {
setError(e instanceof Error ? e.message : "Failed to delete file");
return false;
}
},
[fetchFiles]
);
// Initial fetch
useEffect(() => {
fetchFiles();
}, [fetchFiles]);
return {
files,
loading,
error,
conflict,
clearConflict,
fetchFiles,
fetchFile,
saveFile,
editFile,
removeFile,
};
}
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