73 lines
1.9 KiB
TypeScript
73 lines
1.9 KiB
TypeScript
import { client } from "../backend/helper";
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type Claim = "role" | "person_row_id" | "exp" | "iat" | "aud" | "iss";
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export type UserRole =
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| "candymat_editor"
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| "candymat_candidate"
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| "candymat_person";
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export interface JwtPayload {
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role: UserRole;
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person_row_id: number;
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exp: number;
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iat: number;
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aud: "postgraphile";
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iss: "postgraphile";
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}
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const CLAIMS: Claim[] = ["role", "person_row_id", "exp", "iat", "aud", "iss"];
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const USER_ROLES: UserRole[] = [
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"candymat_editor",
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"candymat_candidate",
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"candymat_person",
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];
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export const getRawJsonWebToken = (): string | null => {
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return localStorage.getItem("token");
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};
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export const isJwtPayloadValid = (jwtPayload: unknown): boolean => {
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const jwt = Object(jwtPayload);
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return (
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CLAIMS.every((claim) => Object.keys(jwt).includes(claim)) &&
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USER_ROLES.includes(jwt.role) &&
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typeof jwt.person_row_id === "number" &&
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typeof jwt.exp === "number" &&
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typeof jwt.iat === "number"
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);
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};
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export const parseJwt = (token: string): JwtPayload | null => {
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try {
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const base64Url = token.split(".")[1];
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const base64 = base64Url.replace(/-/g, "+").replace(/_/g, "/");
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const jsonPayload = decodeURIComponent(
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atob(base64)
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.split("")
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.map((c) => "%" + ("00" + c.charCodeAt(0).toString(16)).slice(-2))
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.join("")
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);
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const jwtPayload = JSON.parse(jsonPayload);
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return isJwtPayloadValid(jwtPayload) ? jwtPayload : null;
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} catch {
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return null;
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}
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};
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export const getJsonWebToken = (): JwtPayload | null => {
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const rawToken = getRawJsonWebToken();
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return rawToken ? parseJwt(rawToken) : null;
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};
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export const logoutUser = async (): Promise<void> => {
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try {
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await client.cache.reset();
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} catch (e) {
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console.error(e);
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}
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localStorage.removeItem("token");
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window.location.reload();
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};
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export const isLoggedIn = (): boolean => !!getJsonWebToken();
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