import type { ApplicationCoincidence } from "../../common";

/** D07: conserva tildes, puntuación, números y ediciones; no aplica la normalización amplia de búsqueda. */
export function normalizeApplicationIdentityText(value: string): string {
  return value.normalize("NFC").trim().replace(/\s+/gu, " ").toLowerCase();
}

/** Señal de revisión exclusivamente: ni el nombre ni el proveedor demuestran identidad de producto. */
export function compareApplicationProduct(
  source: { name: string; provider: string | null },
  candidate: ApplicationCoincidence["candidate"]
): ApplicationCoincidence | undefined {
  const name = normalizeApplicationIdentityText(source.name);

  if (!name || name !== normalizeApplicationIdentityText(candidate.name)) {
    return undefined;
  }
  const own = normalizeApplicationIdentityText(source.provider ?? "");
  const other = normalizeApplicationIdentityText(candidate.provider ?? "");

  if (own && other && own !== other) {
    return undefined;
  }
  const strong = Boolean(own && other);

  return {
    candidate,
    classification: strong ? "name-provider" : "name-only",
    reasons: [
      "same-normalized-name",
      strong ? "same-provider" : "provider-missing",
      ...(candidate.active ? [] : ["inactive-global" as const]),
    ],
  };
}