import { apiFetch, apiFetchBlob } from "@/lib/auth/api-client";
import { CreateLabelTemplateInput, LabelTemplate, UpdateLabelTemplateInput } from "./types";

export function fetchLabelTemplates(): Promise<LabelTemplate[]> {
  return apiFetch<LabelTemplate[]>("/label-templates");
}

export function createLabelTemplate(input: CreateLabelTemplateInput): Promise<LabelTemplate> {
  return apiFetch<LabelTemplate>("/label-templates", {
    method: "POST",
    body: JSON.stringify(input),
  });
}

export function updateLabelTemplate(
  id: string,
  input: UpdateLabelTemplateInput,
): Promise<LabelTemplate> {
  return apiFetch<LabelTemplate>(`/label-templates/${encodeURIComponent(id)}`, {
    method: "PATCH",
    body: JSON.stringify(input),
  });
}

export function deactivateLabelTemplate(id: string): Promise<LabelTemplate> {
  return apiFetch<LabelTemplate>(`/label-templates/${encodeURIComponent(id)}`, { method: "DELETE" });
}

export interface PrintLabelsOptions {
  /** 1 = top left of the sheet; omitted prints from the start. */
  startPosition?: number;
  /** A test print stamped „MUSTER – nicht verkaufsfähig“; always allowed. */
  proof?: boolean;
}

/**
 * The label PDF. A 409 `LABEL_PARTICULARS_MISSING` throws an `ApiError` whose
 * `body.gaps` lists what is missing (`labelParticularsMissing` reads it).
 */
export async function printLabels(
  templateId: string,
  bottlingBatchId: string,
  options: PrintLabelsOptions = {},
): Promise<Blob> {
  const params = new URLSearchParams();
  if (options.startPosition && options.startPosition > 1) {
    params.set("startPosition", String(options.startPosition));
  }
  if (options.proof) params.set("proof", "true");
  const query = params.size > 0 ? `?${params.toString()}` : "";
  const { blob } = await apiFetchBlob(
    `/label-templates/${encodeURIComponent(templateId)}/print/${encodeURIComponent(bottlingBatchId)}${query}`,
    "etiketten.pdf",
    { cache: "no-store" },
  );
  return blob;
}