import type { KolCardConfig } from "@geo/shared-types";

const DEFAULT_ALLOW_WEB_SEARCH = false;
const DEFAULT_ALLOW_USER_KNOWLEDGE = true;

function asRecord(value: unknown): Record<string, unknown> {
  if (!value || typeof value !== "object" || Array.isArray(value)) {
    return {};
  }
  return value as Record<string, unknown>;
}

function booleanFromUnknown(value: unknown): boolean | undefined {
  return typeof value === "boolean" ? value : undefined;
}

export function parseKolCardConfig(value: unknown): Required<Pick<KolCardConfig, "allow_web_search" | "allow_user_knowledge">> {
  const record = asRecord(value);
  return {
    allow_web_search: booleanFromUnknown(record.allow_web_search) ?? DEFAULT_ALLOW_WEB_SEARCH,
    allow_user_knowledge:
      booleanFromUnknown(record.allow_user_knowledge) ?? DEFAULT_ALLOW_USER_KNOWLEDGE,
  };
}

export function mergeKolCardConfig(base: unknown, overrides: KolCardConfig): KolCardConfig {
  const record = asRecord(base);
  const parsed = parseKolCardConfig(record);

  return {
    ...record,
    ...overrides,
    allow_web_search:
      booleanFromUnknown(overrides.allow_web_search) ?? parsed.allow_web_search,
    allow_user_knowledge:
      booleanFromUnknown(overrides.allow_user_knowledge) ?? parsed.allow_user_knowledge,
  };
}