All files / app/utils hooks.ts

83.75% Statements 67/80
66.66% Branches 8/12
81.25% Functions 13/16
84.21% Lines 64/76

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199  54x 54x 54x                 54x         54x       54x                         2185x   2185x 503x 503x 503x       2185x             3139x   3139x   289x 279x           3139x                     54x   54x 478x 478x 478x       478x         478x   13x     13x 13x 13x 13x     13x           13x 13x   13x   11x   11x     11x 11x 11x 11x 11x 11x   11x             29x         11x     2x         2x   13x         478x                                       179x   179x 11x           11x 4x 1x       11x 11x 11x 11x 11x           479x 1708x 1x 1706x 180x    
import { Coordinates } from "features/search/utils/constants";
import { LngLat } from "maplibre-gl";
import { useRouter } from "next/router";
import Sentry from "platform/sentry";
import {
  Dispatch,
  MutableRefObject,
  SetStateAction,
  useCallback,
  useEffect,
  useRef,
  useState,
} from "react";
import {
  filterDuplicatePlaces,
  NominatimPlace,
  simplifyPlaceDisplayName,
} from "utils/nominatim";
 
// Locations having one of these keys are considered non-regions.
// https://nominatim.org/release-docs/latest/api/Output/#addressdetails
const nonRegionKeys = [
  "municipality",
  "city",
  "town",
  "village",
  "city_district",
  "district",
  "borough",
  "suburb",
  "subdivision",
];
 
function useIsMounted() {
  const isMounted = useRef(false);
 
  useEffect(() => {
    isMounted.current = true;
    return () => {
      isMounted.current = false;
    };
  }, []);
 
  return isMounted;
}
 
function useSafeState<State>(
  isMounted: MutableRefObject<boolean>,
  initialState: State | (() => State),
): [State, Dispatch<SetStateAction<State>>] {
  const [state, setState] = useState(initialState);
 
  const safeSetState = useCallback(
    (newState: SetStateAction<State>) => {
      if (isMounted.current) {
        setState(newState);
      }
    },
    [isMounted],
  );
 
  return [state, safeSetState];
}
 
export interface GeocodeResult {
  name: string;
  simplifiedName: string;
  location: LngLat;
  bbox: Coordinates;
  isRegion?: boolean;
}
 
const NOMINATIM_URL = process.env.NEXT_PUBLIC_NOMINATIM_URL;
 
const useGeocodeQuery = () => {
  const isMounted = useIsMounted();
  const [isLoading, setIsLoading] = useSafeState(isMounted, false);
  const [error, setError] = useSafeState<string | undefined>(
    isMounted,
    undefined,
  );
  const [results, setResults] = useSafeState<GeocodeResult[] | undefined>(
    isMounted,
    undefined,
  );
 
  const query = useCallback(
    async (value: string) => {
      Iif (!value) {
        return;
      }
      setIsLoading(true);
      setError(undefined);
      setResults(undefined);
      const url = `${NOMINATIM_URL!}search?format=jsonv2&q=${encodeURIComponent(
        value,
      )}&addressdetails=1`;
      const fetchOptions = {
        headers: {
          Accept: "application/json",
        },
        method: "GET",
      };
      try {
        const response = await fetch(url, fetchOptions);
 
        if (!response.ok) throw Error(await response.text());
 
        const nominatimResults: NominatimPlace[] = await response.json();
 
        Iif (nominatimResults.length === 0) {
          setResults([]);
        } else {
          const filteredResults = filterDuplicatePlaces(nominatimResults);
          const formattedResults = filteredResults.map((result) => {
            const firstElem = result["boundingbox"].shift() as number;
            const lastElem = result["boundingbox"].pop() as number;
            result["boundingbox"].push(firstElem);
            result["boundingbox"].unshift(lastElem);
 
            return {
              location: new LngLat(
                Number(result["lon"]),
                Number(result["lat"]),
              ),
              name: result["display_name"],
              simplifiedName: simplifyPlaceDisplayName(result),
              isRegion: !nonRegionKeys.some((k) => k in result.address),
              bbox: result["boundingbox"],
            };
          });
 
          setResults(formattedResults);
        }
      } catch (e) {
        Sentry.captureException(e, {
          tags: {
            hook: "useGeocodeQuery",
          },
        });
        setError(e instanceof Error ? e.message : "");
      }
      setIsLoading(false);
    },
    [setError, setIsLoading, setResults],
  );
 
  return { isLoading, error, results, query };
};
 
function usePrevious<T>(value: T) {
  const ref = useRef<T>();
  useEffect(() => {
    ref.current = value;
  }, [value]);
  return ref.current;
}
 
function useUnsavedChangesWarning({
  isDirty,
  isSubmitted,
  warningMessage,
}: {
  isDirty: boolean;
  isSubmitted: boolean;
  warningMessage: string;
}) {
  const router = useRouter();
  // https://github.com/vercel/next.js/issues/2694#issuecomment-732990201
  useEffect(() => {
    const handleWindowClose = (e: BeforeUnloadEvent) => {
      Iif (!isDirty) return;
      e.preventDefault();
      e.returnValue = warningMessage;
      return;
    };
    const handleBrowseAway = () => {
      if (!isDirty || isSubmitted) return;
      if (window.confirm(warningMessage)) return;
      router.events.emit("routeChangeError");
      throw Error("Cancelled due to unsaved changes");
    };
    window.addEventListener("beforeunload", handleWindowClose);
    router.events.on("routeChangeStart", handleBrowseAway);
    return () => {
      window.removeEventListener("beforeunload", handleWindowClose);
      router.events.off("routeChangeStart", handleBrowseAway);
    };
  }, [isDirty, router.events, isSubmitted, warningMessage]);
}
 
export {
  useGeocodeQuery,
  useIsMounted,
  usePrevious,
  useSafeState,
  useUnsavedChangesWarning,
};