import { ConstantsService } from './constants.service'; import { UtilsService } from './utils.service'; import { StorageService } from '../abstractions/storage.service'; import { TokenService as TokenServiceAbstraction } from '../abstractions/token.service'; const Keys = { accessToken: 'accessToken', refreshToken: 'refreshToken', twoFactorTokenPrefix: 'twoFactorToken_', }; export class TokenService implements TokenServiceAbstraction { token: string; decodedToken: any; refreshToken: string; constructor(private storageService: StorageService) { } setTokens(accessToken: string, refreshToken: string): Promise { return Promise.all([ this.setToken(accessToken), this.setRefreshToken(refreshToken), ]); } setToken(token: string): Promise { this.token = token; this.decodedToken = null; return this.storageService.save(Keys.accessToken, token); } async getToken(): Promise { if (this.token != null) { return this.token; } this.token = await this.storageService.get(Keys.accessToken); return this.token; } setRefreshToken(refreshToken: string): Promise { this.refreshToken = refreshToken; return this.storageService.save(Keys.refreshToken, refreshToken); } async getRefreshToken(): Promise { if (this.refreshToken != null) { return this.refreshToken; } this.refreshToken = await this.storageService.get(Keys.refreshToken); return this.refreshToken; } setTwoFactorToken(token: string, email: string): Promise { return this.storageService.save(Keys.twoFactorTokenPrefix + email, token); } getTwoFactorToken(email: string): Promise { return this.storageService.get(Keys.twoFactorTokenPrefix + email); } clearTwoFactorToken(email: string): Promise { return this.storageService.remove(Keys.twoFactorTokenPrefix + email); } clearToken(): Promise { this.token = null; this.decodedToken = null; this.refreshToken = null; return Promise.all([ this.storageService.remove(Keys.accessToken), this.storageService.remove(Keys.refreshToken), ]); } // jwthelper methods // ref https://github.com/auth0/angular-jwt/blob/master/src/angularJwt/services/jwt.js decodeToken(): any { if (this.decodedToken) { return this.decodedToken; } if (this.token == null) { throw new Error('Token not found.'); } const parts = this.token.split('.'); if (parts.length !== 3) { throw new Error('JWT must have 3 parts'); } const decoded = UtilsService.urlBase64Decode(parts[1]); if (decoded == null) { throw new Error('Cannot decode the token'); } this.decodedToken = JSON.parse(decoded); return this.decodedToken; } getTokenExpirationDate(): Date { const decoded = this.decodeToken(); if (typeof decoded.exp === 'undefined') { return null; } const d = new Date(0); // The 0 here is the key, which sets the date to the epoch d.setUTCSeconds(decoded.exp); return d; } tokenSecondsRemaining(offsetSeconds: number = 0): number { const d = this.getTokenExpirationDate(); if (d == null) { return 0; } const msRemaining = d.valueOf() - (new Date().valueOf() + (offsetSeconds * 1000)); return Math.round(msRemaining / 1000); } tokenNeedsRefresh(minutes: number = 5): boolean { const sRemaining = this.tokenSecondsRemaining(); return sRemaining < (60 * minutes); } getUserId(): string { const decoded = this.decodeToken(); if (typeof decoded.sub === 'undefined') { throw new Error('No user id found'); } return decoded.sub as string; } getEmail(): string { const decoded = this.decodeToken(); if (typeof decoded.email === 'undefined') { throw new Error('No email found'); } return decoded.email as string; } getName(): string { const decoded = this.decodeToken(); if (typeof decoded.name === 'undefined') { throw new Error('No name found'); } return decoded.name as string; } getPremium(): boolean { const decoded = this.decodeToken(); if (typeof decoded.premium === 'undefined') { return false; } return decoded.premium as boolean; } getIssuer(): string { const decoded = this.decodeToken(); if (typeof decoded.iss === 'undefined') { throw new Error('No issuer found'); } return decoded.iss as string; } }