import { toast } from "sonner";
import type { PlausibilityWarning } from "./types";

/** Warnings about food safety must not time out: they stay until dismissed. */
function mustStay(warnings: readonly PlausibilityWarning[]): boolean {
  return warnings.some(
    (warning) =>
      warning.severity === "WARNUNG" || warning.severity === "BESTAETIGEN",
  );
}

/**
 * After a successful save: "<saved> · 1 Warnung" plus one line per text. The
 * record is saved either way; warnings only point at something to check.
 * A WARNUNG or BESTAETIGEN stays until the person dismisses it. Does nothing
 * for an empty list - the caller shows its own success then.
 */
export function toastWarnings(
  warnings: readonly PlausibilityWarning[],
  savedLabel = "Gespeichert",
): void {
  if (warnings.length === 0) return;
  const count = warnings.length;
  const title = `${savedLabel} \u00b7 ${count} ${count === 1 ? "Warnung" : "Warnungen"}`;
  const description = warnings.map((warning) => warning.message).join("\n");
  if (!mustStay(warnings)) {
    toast.warning(title, {
      description,
      classNames: { description: "whitespace-pre-line" },
    });
    return;
  }
  toast.warning(title, {
    description,
    duration: Infinity,
    closeButton: true,
    action: { label: "Verstanden", onClick: () => undefined },
    classNames: {
      description: "whitespace-pre-line",
      actionButton: "min-h-11 min-w-11",
      closeButton: "size-11",
    },
  });
}