@dnb/eufemia/extensions/forms/Wizard/hooks/useReachRouter.js

DNB Eufemia Design System UI Library

"use client";

import { useCallback, useRef } from 'react';
import useStep from "./useStep.js";
import { useIsomorphicLayoutEffect as useLayoutEffect } from "../../../../shared/helpers/useIsomorphicLayoutEffect.js";
const routerStepChanges = new Map();
export default function useReachRouter(id = null, {
  useLocation,
  navigate
}) {
  const name = id ? `${id}-step` : 'step';
  const {
    setFormError
  } = useStep(id);
  const location = useLocation();
  const locationRef = useRef(location);
  locationRef.current = location;
  const navigateRef = useRef(navigate);
  navigateRef.current = navigate;
  const routerStepChangeRef = useRef(undefined);
  const hasRouterStepRef = useRef(false);
  const onStepChange = useCallback(index => {
    try {
      const locationUrl = new URL(locationRef.current.href);
      const url = typeof window !== 'undefined' ? new URL(window.location.href) : locationUrl;
      if (parseFloat(url.searchParams.get(name)) === index || routerStepChangeRef.current === index || routerStepChanges.get(name) === index) {
        return;
      }
      routerStepChangeRef.current = index;
      routerStepChanges.set(name, index);
      hasRouterStepRef.current = true;
      url.searchParams.set(name, String(index));
      navigateRef.current(url.href);
    } catch (error) {
      routerStepChanges.delete(name);
      setFormError(error);
    }
  }, [name, setFormError]);
  const {
    setActiveIndex,
    onStepChangeEventsRef
  } = useStep(id, {
    onStepChange
  });
  useLayoutEffect(() => {
    return () => {
      if (routerStepChanges.get(name) === routerStepChangeRef.current) {
        routerStepChanges.delete(name);
      }
    };
  }, [name]);
  useLayoutEffect(() => {
    return () => {
      onStepChangeEventsRef?.current?.delete(onStepChange);
    };
  }, [onStepChange, onStepChangeEventsRef]);
  const getIndex = useCallback(() => {
    try {
      const searchParams = new URLSearchParams(location.search);
      return parseFloat(searchParams.get(name));
    } catch (error) {
      setFormError(error);
    }
    return undefined;
  }, [location.search, name, setFormError]);
  useLayoutEffect(() => {
    const routerIndex = getIndex();
    const hasRouterIndex = !isNaN(routerIndex);
    if (hasRouterIndex) {
      hasRouterStepRef.current = true;
    }
    if (hasRouterIndex || hasRouterStepRef.current) {
      const activeIndex = hasRouterIndex ? routerIndex : 0;
      const skipStepChangeCall = hasRouterIndex && activeIndex === routerStepChangeRef.current;
      routerStepChangeRef.current = undefined;
      routerStepChanges.delete(name);
      setActiveIndex?.(activeIndex, {
        skipStepChangeCall,
        skipStepChangeCallFromHook: true,
        skipStepChangeCallBeforeMounted: true
      });
    }
  }, [getIndex, name, setActiveIndex]);
  return {
    getIndex
  };
}
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