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import { toast } from "sonner";
import {
api,
StatusEnum,
TaskRead,
useScenariosImportFromUploadCreateMutation,
} from "@/api/apiStore.gen";
import { useUpdateTaskCache } from "@/hooks/cache/useUpdateTaskCache";
import {
useTaskCancelledSubscription,
useTaskCompletedSubscription,
useTaskUpdatedSubscription,
} from "@/hooks/notifications/notificationSubscriptions";
import { scanCsvHeadersLocal } from "@/lib/uploads/csvHeader";
import { isSameUploadedFileSelection } from "@/lib/uploads/isSameUploadedFileSelection";
import { useResumableMultipartUpload } from "@/lib/uploads/useResumableMultipartUpload.ts";
import { useAppDispatch } from "@/store/hooks";
type UseScenarioFileUploadArgs = {
onSuccess: (fileName: string) => void;
onError: (error: unknown) => void;
updateUploadedFileName: (name: string) => void;
flowsheetId: number | string;
scenarioId: number;
};
type UploadTaskRead = TaskRead;
export type UseScenarioFileUploadResult = {
handleFileUpload: (file: File) => Promise<void>;
abortUpload: () => Promise<void>;
clearUploadState: () => void;
retryImport: () => Promise<void>;
uploadState: ReturnType<typeof useResumableMultipartUpload>["state"];
importTask: UploadTaskRead | null;
importStartError: string | null;
isStartingImport: boolean;
csvWarnings: string[];
};
function isCsvFile(file: File): boolean {
return file.name.toLowerCase().endsWith(".csv");
}
/** Manage scenario CSV upload/import for the multipart object-storage flow. */
export function useScenarioFileUpload({
onSuccess,
onError,
updateUploadedFileName,
flowsheetId,
scenarioId,
}: UseScenarioFileUploadArgs): UseScenarioFileUploadResult {
const dispatch = useAppDispatch();
const updateTaskCache = useUpdateTaskCache();
const [startImportTask] = useScenariosImportFromUploadCreateMutation();
const importTaskRef = useRef<UploadTaskRead | null>(null);
const pendingFileNameRef = useRef<string | null>(null);
const [importTask, setImportTask] = useState<UploadTaskRead | null>(null);
const [importStartError, setImportStartError] = useState<string | null>(null);
const [isStartingImport, setIsStartingImport] = useState(false);
const [csvWarnings, setCsvWarnings] = useState<string[]>([]);
const uploadContext = useMemo(
() => ({
purpose: "scenario_csv" as const,
flowsheet_id: Number(flowsheetId),
scenario_id: scenarioId,
}),
[flowsheetId, scenarioId],
);
const {
state: uploadState,
startUpload,
abortUpload: abortMultipartUpload,
clearUploadState: clearMultipartUploadState,
} = useResumableMultipartUpload({
storageKey: `csv-upload:scenario:${scenarioId}`,
context: uploadContext,
});
function setTrackedImportTask(task: UploadTaskRead | null): void {
importTaskRef.current = task;
setImportTask(task);
}
function setTrackedPendingFileName(fileName: string | null): void {
pendingFileNameRef.current = fileName;
}
function clearTrackedImportState(): void {
setTrackedImportTask(null);
setTrackedPendingFileName(null);
setImportStartError(null);
}
async function abortUpload(): Promise<void> {
clearTrackedImportState();
setCsvWarnings([]);
await abortMultipartUpload();
}
function clearUploadState(): void {
clearTrackedImportState();
setCsvWarnings([]);
clearMultipartUploadState();
}
function handleImportTaskMessage(
task: UploadTaskRead,
expectedTaskId = importTaskRef.current?.id,
): void {
if (expectedTaskId == null || task.id !== expectedTaskId) {
return;
}
setTrackedImportTask(task);
updateTaskCache(task);
setImportStartError(null);
if (task.status === StatusEnum.Completed) {
const resolvedFileName =
pendingFileNameRef.current ??
uploadState.fileName ??
uploadState.resumeState?.original_filename ??
"CSV import";
updateUploadedFileName(resolvedFileName);
dispatch(
api.util.invalidateTags([
"DataColumns" as never,
"Scenario" as never,
"Optimizations" as never,
]),
);
setTrackedPendingFileName(null);
onSuccess(resolvedFileName);
return;
}
if (
task.status === StatusEnum.Failed ||
task.status === StatusEnum.Cancelled
) {
setTrackedPendingFileName(null);
onError(task.error);
}
}
useTaskUpdatedSubscription((task) => {
if (task.id !== importTaskRef.current?.id) {
return;
}
if (
task.status === StatusEnum.Completed ||
task.status === StatusEnum.Failed ||
task.status === StatusEnum.Cancelled
) {
handleImportTaskMessage(task);
return;
}
setTrackedImportTask(task);
updateTaskCache(task);
});
useTaskCompletedSubscription((task) => {
handleImportTaskMessage(task);
});
useTaskCancelledSubscription((task) => {
handleImportTaskMessage(task);
});
const startImportFromUpload = async (
uploadSessionId: string,
fileName: string,
): Promise<void> => {
setImportStartError(null);
setTrackedPendingFileName(fileName);
setIsStartingImport(true);
try {
const task = await startImportTask({
importScenarioFromUpload: {
scenario_id: scenarioId,
upload_session_id: Number(uploadSessionId),
},
}).unwrap();
setTrackedImportTask(task);
updateTaskCache(task);
if (
task.status === StatusEnum.Completed ||
task.status === StatusEnum.Failed ||
task.status === StatusEnum.Cancelled
) {
handleImportTaskMessage(task, task.id);
} else {
toast.success("CSV uploaded. Import started.");
}
} catch (error) {
const description =
error instanceof Error
? error.message
: "The uploaded CSV is waiting, but the import task could not be started.";
setImportStartError(description);
toast.error("Import could not be started", {
description,
});
onError(error);
} finally {
setIsStartingImport(false);
}
};
const retryImport = async (): Promise<void> => {
if (!uploadState.uploadSessionId || !uploadState.fileName) {
return;
}
await startImportFromUpload(
uploadState.uploadSessionId,
uploadState.fileName,
);
};
const handleFileUpload = async (file: File) => {
if (!isCsvFile(file)) {
toast.error("Unsupported file", {
description: "Please upload a CSV file.",
});
return;
}
try {
const localHeaders = await scanCsvHeadersLocal(file, {
warnOnNonNumericColumns: true,
});
setCsvWarnings(localHeaders.warnings);
if (
localHeaders.guessedDelimiter == null ||
localHeaders.headers.length === 0
) {
toast.error("Unsupported CSV format", {
description:
localHeaders.warnings[0] ??
"Only UTF-8 CSV files with comma or semicolon delimiters are supported.",
});
return;
}
if (isSameUploadedFileSelection(uploadState, file)) {
toast.warning("CSV already uploaded", {
description:
"This file has already completed uploading. Use Retry import to run the import again.",
});
return;
}
const completedUpload = await startUpload(file);
await startImportFromUpload(completedUpload.upload_session_id, file.name);
} catch (error) {
if (error instanceof DOMException && error.name === "AbortError") {
return;
}
toast.error("Upload failed", {
description:
error instanceof Error
? error.message
: "The CSV file could not be uploaded.",
});
onError(error);
}
};
return {
handleFileUpload,
abortUpload,
clearUploadState,
retryImport,
uploadState,
importTask,
importStartError,
isStartingImport,
csvWarnings,
};
}
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