// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef URLSearchParams_h
#define URLSearchParams_h

#include <base/gtest_prod_util.h>
#include <utility>
#include "bindings/core/v8/Iterable.h"
#include "bindings/core/v8/ScriptWrappable.h"
#include "bindings/core/v8/USVStringSequenceSequenceOrUSVStringOrURLSearchParams.h"
#include "platform/heap/Handle.h"
#include "platform/network/EncodedFormData.h"
#include "wtf/Forward.h"
#include "wtf/text/WTFString.h"

namespace blink {

class ExceptionState;
class DOMURL;

typedef USVStringSequenceSequenceOrUSVStringOrURLSearchParams
    URLSearchParamsInit;

class CORE_EXPORT URLSearchParams final
    : public GarbageCollectedFinalized<URLSearchParams>,
      public ScriptWrappable,
      public PairIterable<String, String> {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static URLSearchParams* create(const URLSearchParamsInit&, ExceptionState&);
  static URLSearchParams* create(const Vector<Vector<String>>&,
                                 ExceptionState&);

  static URLSearchParams* create(const String& queryString,
                                 DOMURL* urlObject = nullptr) {
    return new URLSearchParams(queryString, urlObject);
  }

  ~URLSearchParams();

  // URLSearchParams interface methods
  String toString() const;
  void append(const String& name, const String& value);
  void deleteAllWithName(const String&);
  String get(const String&) const;
  Vector<String> getAll(const String&) const;
  bool has(const String&) const;
  void set(const String& name, const String& value);
  void setInput(const String&);

  // Internal helpers
  PassRefPtr<EncodedFormData> toEncodedFormData() const;
  const Vector<std::pair<String, String>>& params() const { return m_params; }

#if DCHECK_IS_ON()
  DOMURL* urlObject() const;
#endif

  DECLARE_TRACE();

 private:
  FRIEND_TEST_ALL_PREFIXES(URLSearchParamsTest, EncodedFormData);

  explicit URLSearchParams(const String&, DOMURL* = nullptr);
  explicit URLSearchParams(URLSearchParams*);

  void runUpdateSteps();
  IterationSource* startIteration(ScriptState*, ExceptionState&) override;
  void encodeAsFormData(Vector<char>&) const;

  void appendWithoutUpdate(const String& name, const String& value);

  Vector<std::pair<String, String>> m_params;

  WeakMember<DOMURL> m_urlObject;
};

}  // namespace blink

#endif  // URLSearchParams_h