import type { ActionResult } from "./safe-action-shared";
export type ArticleSaveResult = ActionResult<{ redirectTo: string }>;
export class ArticleInputError extends Error {
	constructor(
		public readonly code:
			| "titleRequired"
			| "titleTooLong"
			| "summaryTooLong"
			| "imageTooLong"
			| "invalidStatus"
			| "publishDateRequired",
	) {
		super(code);
	}
}
export function readArticleInput(form: FormData) {
	const text = (key: string) =>
		String(form.get(key) ?? "")
			.normalize("NFC")
			.trim();
	const title = text("title"),
		shortStory = text("shortStory"),
		fullStory = text("fullStory"),
		image = text("image");
	if (!title) throw new ArticleInputError("titleRequired");
	if (title.length > 255) throw new ArticleInputError("titleTooLong");
	if (shortStory.length > 255) throw new ArticleInputError("summaryTooLong");
	if (image.length > 255) throw new ArticleInputError("imageTooLong");
	const status = text("status") || "published";
	if (status !== "published" && status !== "draft" && status !== "scheduled")
		throw new ArticleInputError("invalidStatus");
	const publishAt = status === "scheduled" ? new Date(text("publishAt")) : null;
	if (publishAt && Number.isNaN(publishAt.getTime()))
		throw new ArticleInputError("publishDateRequired");
	return {
		title,
		shortStory,
		fullStory,
		image,
		status,
		publishAt,
		rawSlug: text("slug"),
	};
}
export function articleSlug(value: string | string[]): string {
	return Array.isArray(value) ? value.join("/") : value;
}