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package org.hl7.fhir.utilities.http;

import lombok.Getter;
import org.hl7.fhir.utilities.settings.ServerDetailsPOJO;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public abstract class ManagedWebAccessorBase> {
  @Getter
  private final Iterable serverTypes;
  
  @Getter
  private final String userAgent;
  @Getter
  private HTTPAuthenticationMode authenticationMode;
  @Getter
  private String username;
  @Getter
  private String password;
  @Getter
  private String token;

  @Getter
  private final List serverAuthDetails;
  @Getter
  private final Map headers = new HashMap<>();

  public ManagedWebAccessorBase(Iterable serverTypes, String userAgent, List serverAuthDetails) {
    this.serverTypes = serverTypes;
    this.userAgent = userAgent;
    this.serverAuthDetails = serverAuthDetails;
  }

  @SuppressWarnings("unchecked")
  final B self() {
    return (B) this;
  }

  public B withHeader(String name, String value) {
    headers.put(name, value);
    return self();
  }

  public B withBasicAuth(String username, String password) {
    this.authenticationMode = HTTPAuthenticationMode.BASIC;
    this.username = username;
    this.password = password;
    return self();
  }

  public B withToken(String token) {
    this.authenticationMode = HTTPAuthenticationMode.TOKEN;
    this.token = token;
    return self();
  }

  public B withApiKey(String apiKey) {
    this.authenticationMode = HTTPAuthenticationMode.APIKEY;
    this.token = apiKey;
    return self();
  }

  public B withNoneAuth() {
    this.authenticationMode = HTTPAuthenticationMode.NONE;
    setAllAuthHeadersToNull();
    return self();
  }

  public B withServerSpecificAuth() {
    this.authenticationMode = null;
    setAllAuthHeadersToNull();
    return self();
  }

  private void setAllAuthHeadersToNull() {
    this.token = null;
    this.username = null;
    this.password = null;
  }
}