import { QueryClient, queryOptions } from "@tanstack/react-query";
import { z } from "zod/mini";
import { adminFetch } from "@/lib/admin-fetch";
import type { ImportJob } from "@/lib/furni/import-job";

const endpoint = "/api/admin/studio/import-jobs";
const historyTimeoutMs = 15_000;
const jobSchema = z.looseObject({
	id: z.uuid(),
	userId: z.int().check(z.positive()),
	createdAt: z.iso.datetime({ offset: true }),
	updatedAt: z.iso.datetime({ offset: true }),
	state: z.enum(["queued", "running", "completed", "interrupted", "cancelled"]),
	translate: z.boolean(),
	mode: z.optional(z.literal("repair")),
	syncKind: z.optional(z.enum(["official", "clone"])),
	operationId: z.optional(z.string()),
	retryOf: z.optional(z.string()),
	sourceId: z.optional(z.string()),
	cancelRequested: z.optional(z.boolean()),
	langs: z.optional(z.array(z.string())),
	items: z.array(
		z.looseObject({
			id: z.int().check(z.nonnegative()),
			classname: z.string(),
			name: z.string(),
			description: z.string(),
			type: z.string(),
			revision: z.number(),
			category: z.string(),
			state: z.enum([
				"pending",
				"running",
				"done",
				"failed",
				"cancelled",
				"interrupted",
			]),
			error: z.optional(z.string()),
			warnings: z.optional(z.array(z.string())),
			itemId: z.optional(z.number()),
		}),
	),
});
const historySchema = z.object({
	ok: z.literal(true),
	jobs: z.array(jobSchema).check(z.maxLength(30)),
	nextCursor: z.optional(
		z.nullable(
			z.string().check(
				z.regex(
					/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z\|[0-9a-f-]{36}$/i,
				),
				z.refine((value) => {
					const [timestamp, id] = value.split("|");
					return (
						z.iso.datetime({ precision: 3 }).safeParse(timestamp).success &&
						z.uuid().safeParse(id).success
					);
				}),
			),
		),
	),
});
export interface FurnitureJobsPage {
	jobs: ImportJob[];
	nextCursor: string | null;
}
export class FurnitureJobsHttpError extends Error {
	constructor(
		message: string,
		readonly status: number,
	) {
		super(message);
	}
}
async function responseData(
	response: Response,
	fallback: string,
): Promise<unknown> {
	const data: unknown = await response.json().catch(() => null);
	if (!response.ok) {
		const message =
			data &&
			typeof data === "object" &&
			"error" in data &&
			typeof data.error === "string"
				? data.error
				: `${fallback} (${response.status})`;
		throw new FurnitureJobsHttpError(message, response.status);
	}
	return data;
}
export async function readFurnitureJobResponse(
	response: Response,
	fallback: string,
): Promise<ImportJob> {
	const data = await responseData(response, fallback);
	const parsed = z
		.object({ ok: z.literal(true), job: jobSchema })
		.safeParse(data);
	if (!parsed.success) throw Error("Invalid import job response");
	return parsed.data.job as ImportJob;
}
/** Each mounted history owns this client; no persisted or cross-page account cache. */
export function createFurnitureJobsClient() {
	return new QueryClient({
		defaultOptions: {
			queries: {
				retry: false,
				networkMode: "always",
				staleTime: 0,
				gcTime: 0,
				refetchOnWindowFocus: false,
				refetchOnReconnect: false,
			},
			mutations: { retry: false },
		},
	});
}
export function furnitureJobsQueryOptions(
	paginated: boolean,
	cursor: string | null,
	timeoutMs = historyTimeoutMs,
) {
	return queryOptions({
		queryKey: [
			"furniture-import-history",
			paginated,
			paginated ? cursor : null,
		] as const,
		queryFn: async ({ signal }): Promise<FurnitureJobsPage> => {
			const timeout = AbortSignal.timeout(timeoutMs);
			const combined = AbortSignal.any([signal, timeout]);
			const url = new URL(
				endpoint,
				typeof window === "undefined"
					? "http://localhost"
					: window.location.origin,
			);
			if (paginated) {
				url.searchParams.set("page", "1");
				if (cursor) url.searchParams.set("before", cursor);
			}
			try {
				const response = await adminFetch(url, {
					signal: combined,
					cache: "no-store",
				});
				const data = await responseData(response, "Import history unavailable");
				const parsed = historySchema.safeParse(data);
				if (!parsed.success) throw Error("Invalid import history response");
				return {
					jobs: parsed.data.jobs as ImportJob[],
					nextCursor: parsed.data.nextCursor ?? null,
				};
			} catch (error) {
				if (timeout.aborted && !signal.aborted)
					throw Error("Import history request timed out");
				throw error;
			}
		},
	});
}