import { fail } from "@sveltejs/kit";
import type { Actions, PageServerLoad } from "./$types";
import type { StackqReceipt } from "$lib/types/receipts";
import { validateImageUpload } from "$lib/validate-image-upload";

const COLLECTION = "Stackq_Receipts";

const TYPE_OPTIONS = ["Purchase", "Gas"] as const;

export const load: PageServerLoad = async ({ locals }) => {
  const list = await locals.pb
    .collection(COLLECTION)
    .getFullList<StackqReceipt>({
      sort: "-created",
      expand: "User",
    })
    .catch((err) => {
      console.error(COLLECTION, err);
      return [] as StackqReceipt[];
    });

  return { receipts: list };
};

export const actions: Actions = {
  create: async ({ request, locals }) => {
    const user = locals.user;
    if (!user?.id) return fail(401, { error: "You must be logged in to create a receipt." });

    const form = await request.formData();
    const Type = (form.get("Type") as string)?.trim() || "Purchase";
    const imageFile = form.get("Image") as File | null;
    const hasImage = imageFile && imageFile.size > 0;
    if (hasImage) {
      const imgError = validateImageUpload(imageFile);
      if (imgError) return fail(400, { error: imgError, Type });
    }

    const body: Record<string, unknown> = {
      Status: "New",
      Type: TYPE_OPTIONS.includes(Type as (typeof TYPE_OPTIONS)[number]) ? Type : "Purchase",
      User: user.id,
    };
    if (hasImage) body.Image = imageFile;

    try {
      await locals.pb.collection(COLLECTION).create(body);
    } catch (err: unknown) {
      const message =
        err && typeof err === "object" && "message" in err
          ? String((err as { message: string }).message)
          : "Failed to create receipt.";
      return fail(500, { error: message, Type });
    }

    return { success: true };
  },
};