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A web service test double for all occasions - standalone edition
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/*
 * Copyright (C) 2023 Thomas Akehurst
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.tomakehurst.wiremock.http;

import static com.github.tomakehurst.wiremock.common.Encoding.encodeBase64;
import static java.util.Objects.requireNonNull;

import com.github.tomakehurst.wiremock.common.Strings;
import com.github.tomakehurst.wiremock.common.Urls;
import java.net.URI;
import java.util.*;

public class ImmutableRequest implements Request {

  private final String absoluteUrl;
  private final Map queryParams;
  private final RequestMethod method;
  private final String protocol;
  private final String scheme;
  private final String host;
  private final int port;
  private final String clientIp;
  private final HttpHeaders headers;
  private final byte[] body;
  private final boolean multipart;

  private final Map parts;
  private final boolean browserProxyRequest;

  public static Builder create() {
    return new Builder();
  }

  protected ImmutableRequest(
      String absoluteUrl,
      RequestMethod method,
      String protocol,
      String clientIp,
      HttpHeaders headers,
      byte[] body,
      boolean multipart,
      boolean browserProxyRequest) {
    this.absoluteUrl = requireNonNull(absoluteUrl);
    this.queryParams = Urls.splitQueryFromUrl(absoluteUrl);
    this.method = requireNonNull(method);
    this.protocol = protocol;

    final URI uri = URI.create(absoluteUrl);
    this.scheme = uri.getScheme();
    this.host = uri.getHost();
    this.port = uri.getPort();

    this.clientIp = clientIp;
    this.headers = headers;
    this.body = body;
    this.multipart = multipart;
    this.parts = Collections.emptyMap();
    this.browserProxyRequest = browserProxyRequest;
  }

  @Override
  public String getUrl() {
    return Urls.getPathAndQuery(absoluteUrl);
  }

  @Override
  public String getAbsoluteUrl() {
    return absoluteUrl;
  }

  @Override
  public RequestMethod getMethod() {
    return method;
  }

  @Override
  public String getScheme() {
    return scheme;
  }

  @Override
  public String getHost() {
    return host;
  }

  @Override
  public int getPort() {
    return port;
  }

  @Override
  public String getClientIp() {
    return clientIp;
  }

  @Override
  public String getHeader(String key) {
    final HttpHeader header = header(key);
    return header.isPresent() ? header.firstValue() : null;
  }

  @Override
  public HttpHeader header(String key) {
    return headers.getHeader(key);
  }

  @Override
  public ContentTypeHeader contentTypeHeader() {
    return headers.getContentTypeHeader();
  }

  @Override
  public HttpHeaders getHeaders() {
    return headers;
  }

  @Override
  public boolean containsHeader(String key) {
    return headers.getHeader(key).isPresent();
  }

  @Override
  public Set getAllHeaderKeys() {
    return headers.keys();
  }

  @Override
  public QueryParameter queryParameter(String key) {
    return queryParams.get(key);
  }

  @Override
  public FormParameter formParameter(String key) {
    return null;
  }

  @Override
  public Map formParameters() {
    return Collections.emptyMap();
  }

  @Override
  public Map getCookies() {
    return null;
  }

  @Override
  public byte[] getBody() {
    return body;
  }

  @Override
  public String getBodyAsString() {
    return Strings.stringFromBytes(body);
  }

  @Override
  public String getBodyAsBase64() {
    return encodeBase64(getBody());
  }

  @Override
  public boolean isMultipart() {
    return multipart;
  }

  @Override
  public Collection getParts() {
    return parts.values();
  }

  @Override
  public Part getPart(String name) {
    return parts.get(name);
  }

  @Override
  public boolean isBrowserProxyRequest() {
    return browserProxyRequest;
  }

  @Override
  public Optional getOriginalRequest() {
    return Optional.empty();
  }

  @Override
  public String getProtocol() {
    return protocol;
  }

  public static class Builder {
    private String absouteUrl;
    private RequestMethod requestMethod;
    private String protocol;
    private String clientIp;
    private List headers = new ArrayList<>();
    private byte[] body;
    private boolean multipart;
    private boolean browserProxyRequest;

    public Builder withAbsoluteUrl(String absouteUrl) {
      this.absouteUrl = absouteUrl;
      return this;
    }

    public Builder withMethod(RequestMethod requestMethod) {
      this.requestMethod = requestMethod;
      return this;
    }

    public Builder withProtocol(String protocol) {
      this.protocol = protocol;
      return this;
    }

    public Builder withClientIp(String clientIp) {
      this.clientIp = clientIp;
      return this;
    }

    public Builder withHeaders(HttpHeaders headers) {
      this.headers = new ArrayList<>(headers.all());
      return this;
    }

    public Builder withHeader(String key, String value) {
      this.headers.add(new HttpHeader(key, Collections.singletonList(value)));
      return this;
    }

    public Builder withHeader(String key, Collection values) {
      this.headers.add(new HttpHeader(key, values));
      return this;
    }

    public Builder withBody(byte[] body) {
      this.body = body;
      return this;
    }

    public Builder withMultipart(boolean multipart) {
      this.multipart = multipart;
      return this;
    }

    public Builder withBrowserProxyRequest(boolean browserProxyRequest) {
      this.browserProxyRequest = browserProxyRequest;
      return this;
    }

    public ImmutableRequest build() {
      return new ImmutableRequest(
          absouteUrl,
          requestMethod,
          protocol,
          clientIp,
          new HttpHeaders(headers),
          body,
          multipart,
          browserProxyRequest);
    }
  }
}