/*
 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2013 Google Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ResourceError_h
#define ResourceError_h

#include "net/base/net_errors.h"
#include "platform/PlatformExport.h"
#include "wtf/Allocator.h"
#include "wtf/text/WTFString.h"
#include <iosfwd>

namespace blink {

// Used for errors that won't be exposed to clients.
PLATFORM_EXPORT extern const char errorDomainBlinkInternal[];

class PLATFORM_EXPORT ResourceError final {
  DISALLOW_NEW();

 public:
  enum Error {
    ACCESS_DENIED = net::ERR_ACCESS_DENIED,
    BLOCKED_BY_XSS_AUDITOR = net::ERR_BLOCKED_BY_XSS_AUDITOR
  };

  static ResourceError cancelledError(const String& failingURL);
  static ResourceError cancelledDueToAccessCheckError(const String& failingURL);

  // Only for Blink internal usage.
  static ResourceError cacheMissError(const String& failingURL);

  ResourceError()
      : m_errorCode(0),
        m_isNull(true),
        m_isCancellation(false),
        m_isAccessCheck(false),
        m_isTimeout(false),
        m_staleCopyInCache(false),
        m_wasIgnoredByHandler(false),
        m_isCacheMiss(false) {}

  ResourceError(const String& domain,
                int errorCode,
                const String& failingURL,
                const String& localizedDescription)
      : m_domain(domain),
        m_errorCode(errorCode),
        m_failingURL(failingURL),
        m_localizedDescription(localizedDescription),
        m_isNull(false),
        m_isCancellation(false),
        m_isAccessCheck(false),
        m_isTimeout(false),
        m_staleCopyInCache(false),
        m_wasIgnoredByHandler(false),
        m_isCacheMiss(false) {}

  // Makes a deep copy. Useful for when you need to use a ResourceError on
  // another thread.
  ResourceError copy() const;

  bool isNull() const { return m_isNull; }

  const String& domain() const { return m_domain; }
  int errorCode() const { return m_errorCode; }
  const String& failingURL() const { return m_failingURL; }
  const String& localizedDescription() const { return m_localizedDescription; }

  void setIsCancellation(bool isCancellation) {
    m_isCancellation = isCancellation;
  }
  bool isCancellation() const { return m_isCancellation; }

  void setIsAccessCheck(bool isAccessCheck) { m_isAccessCheck = isAccessCheck; }
  bool isAccessCheck() const { return m_isAccessCheck; }

  void setIsTimeout(bool isTimeout) { m_isTimeout = isTimeout; }
  bool isTimeout() const { return m_isTimeout; }
  void setStaleCopyInCache(bool staleCopyInCache) {
    m_staleCopyInCache = staleCopyInCache;
  }
  bool staleCopyInCache() const { return m_staleCopyInCache; }

  void setWasIgnoredByHandler(bool ignoredByHandler) {
    m_wasIgnoredByHandler = ignoredByHandler;
  }
  bool wasIgnoredByHandler() const { return m_wasIgnoredByHandler; }

  void setIsCacheMiss(bool isCacheMiss) { m_isCacheMiss = isCacheMiss; }
  bool isCacheMiss() const { return m_isCacheMiss; }

  static bool compare(const ResourceError&, const ResourceError&);

 private:
  String m_domain;
  int m_errorCode;
  String m_failingURL;
  String m_localizedDescription;
  bool m_isNull;
  bool m_isCancellation;
  bool m_isAccessCheck;
  bool m_isTimeout;
  bool m_staleCopyInCache;
  bool m_wasIgnoredByHandler;
  bool m_isCacheMiss;
};

inline bool operator==(const ResourceError& a, const ResourceError& b) {
  return ResourceError::compare(a, b);
}
inline bool operator!=(const ResourceError& a, const ResourceError& b) {
  return !(a == b);
}

// Pretty printer for gtest. Declared here to avoid ODR violations.
std::ostream& operator<<(std::ostream&, const ResourceError&);

}  // namespace blink

#endif  // ResourceError_h