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import type { JWTPayload } from '../types.d.ts'import epoch from '../lib/epoch.ts'import isObject from '../lib/is_object.ts'import secs from '../lib/secs.ts'
/** * Generic class for JWT producing. */export class ProduceJWT {  protected _payload!: JWTPayload
  /**   * @param payload The JWT Claims Set object.   */  constructor(payload: JWTPayload) {    if (!isObject(payload)) {      throw new TypeError('JWT Claims Set MUST be an object')    }    this._payload = payload  }
  /**   * Set "iss" (Issuer) Claim.   *   * @param issuer "Issuer" Claim value to set on the JWT Claims Set.   */  setIssuer(issuer: string) {    this._payload = { ...this._payload, iss: issuer }    return this  }
  /**   * Set "sub" (Subject) Claim.   *   * @param subject "sub" (Subject) Claim value to set on the JWT Claims Set.   */  setSubject(subject: string) {    this._payload = { ...this._payload, sub: subject }    return this  }
  /**   * Set "aud" (Audience) Claim.   *   * @param audience "aud" (Audience) Claim value to set on the JWT Claims Set.   */  setAudience(audience: string | string[]) {    this._payload = { ...this._payload, aud: audience }    return this  }
  /**   * Set "jti" (JWT ID) Claim.   *   * @param jwtId "jti" (JWT ID) Claim value to set on the JWT Claims Set.   */  setJti(jwtId: string) {    this._payload = { ...this._payload, jti: jwtId }    return this  }
  /**   * Set "nbf" (Not Before) Claim.   *   * @param input "nbf" (Not Before) Claim value to set on the JWT Claims Set.   * When number is passed that is used as a value, when string is passed   * it is resolved to a time span and added to the current timestamp.   */  setNotBefore(input: number | string) {    if (typeof input === 'number') {      this._payload = { ...this._payload, nbf: input }    } else {      this._payload = { ...this._payload, nbf: epoch(new Date()) + secs(input) }    }    return this  }
  /**   * Set "exp" (Expiration Time) Claim.   *   * @param input "exp" (Expiration Time) Claim value to set on the JWT Claims Set.   * When number is passed that is used as a value, when string is passed   * it is resolved to a time span and added to the current timestamp.   */  setExpirationTime(input: number | string) {    if (typeof input === 'number') {      this._payload = { ...this._payload, exp: input }    } else {      this._payload = { ...this._payload, exp: epoch(new Date()) + secs(input) }    }    return this  }
  /**   * Set "iat" (Issued At) Claim.   *   * @param input "iat" (Issued At) Claim value to set on the JWT Claims Set.   * Default is current timestamp.   */  setIssuedAt(input?: number) {    if (typeof input === 'undefined') {      this._payload = { ...this._payload, iat: epoch(new Date()) }    } else {      this._payload = { ...this._payload, iat: input }    }    return this  }}