import { useCallback } from "react";

import { KETCH_RETRY_CONFIG } from "~/constants";
import { KetchConsentResponse } from "~/types";

export const useConsent = () => {
  const setupAnalyticsConsentListener = useCallback(
    (onConsentChange: (hasConsent: boolean) => void) => {
      let retries = 0;
      let timeoutId: ReturnType<typeof setTimeout> | null = null;

      if (process.env.NODE_ENV === "development") {
        onConsentChange(true);
        return () => {
          // noop cleanup for dev
        };
      }

      const trySetup = () => {
        if ("window" in globalThis && window.ketch) {
          try {
            window.ketch(
              "on",
              "consent",
              (consentData: KetchConsentResponse) => {
                onConsentChange(Boolean(consentData.purposes?.analytics));
              }
            );
          } catch (error) {
            console.error("Failed to setup Ketch consent listener:", error);
            onConsentChange(false);
          }
        } else if (retries < KETCH_RETRY_CONFIG.maxRetries) {
          retries++;
          timeoutId = setTimeout(trySetup, KETCH_RETRY_CONFIG.retryInterval);
        } else {
          console.warn(
            `Failed to initialize consent management after ${KETCH_RETRY_CONFIG.maxRetries} retries`
          );
          onConsentChange(false);
        }
      };

      trySetup();

      // Return cleanup function to cancel pending retries
      return () => {
        if (timeoutId !== null) {
          clearTimeout(timeoutId);
        }
      };
    },
    []
  );

  return {
    setupAnalyticsConsentListener,
  };
};