// Copyright (c) 2012 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 NET_BASE_ADDRESS_LIST_H_
#define NET_BASE_ADDRESS_LIST_H_

#include <stdint.h>

#include <string>
#include <vector>

#include "base/compiler_specific.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_export.h"
#include "net/log/net_log.h"

struct addrinfo;

namespace net {

class IPAddress;

class NET_EXPORT AddressList {
 public:
  AddressList();
  AddressList(const AddressList&);
  ~AddressList();

  // Creates an address list for a single IP literal.
  explicit AddressList(const IPEndPoint& endpoint);

  static AddressList CreateFromIPAddress(const IPAddress& address,
                                         uint16_t port);

  static AddressList CreateFromIPAddressList(const IPAddressList& addresses,
                                             const std::string& canonical_name);

  // Copies the data from |head| and the chained list into an AddressList.
  static AddressList CreateFromAddrinfo(const struct addrinfo* head);

  // Returns a copy of |list| with port on each element set to |port|.
  static AddressList CopyWithPort(const AddressList& list, uint16_t port);

  // TODO(szym): Remove all three. http://crbug.com/126134
  const std::string& canonical_name() const { return canonical_name_; }

  void set_canonical_name(const std::string& canonical_name) {
    canonical_name_ = canonical_name;
  }

  // Sets canonical name to the literal of the first IP address on the list.
  void SetDefaultCanonicalName();

  // Creates a callback for use with the NetLog that returns a Value
  // representation of the address list.  The callback must be destroyed before
  // |this| is.
  NetLog::ParametersCallback CreateNetLogCallback() const;

  using iterator = std::vector<IPEndPoint>::iterator;
  using const_iterator = std::vector<IPEndPoint>::const_iterator;

  size_t size() const { return endpoints_.size(); }
  bool empty() const { return endpoints_.empty(); }
  void clear() { endpoints_.clear(); }
  void reserve(size_t count) { endpoints_.reserve(count); }
  size_t capacity() const { return endpoints_.capacity(); }
  IPEndPoint& operator[](size_t index) { return endpoints_[index]; }
  const IPEndPoint& operator[](size_t index) const { return endpoints_[index]; }
  IPEndPoint& front() { return endpoints_.front(); }
  const IPEndPoint& front() const { return endpoints_.front(); }
  IPEndPoint& back() { return endpoints_.back(); }
  const IPEndPoint& back() const { return endpoints_.back(); }
  void push_back(const IPEndPoint& val) { endpoints_.push_back(val); }

  template <typename InputIt>
  void insert(iterator pos, InputIt first, InputIt last) {
    endpoints_.insert(pos, first, last);
  }
  iterator begin() { return endpoints_.begin(); }
  const_iterator begin() const { return endpoints_.begin(); }
  iterator end() { return endpoints_.end(); }
  const_iterator end() const { return endpoints_.end(); }

 private:
  std::vector<IPEndPoint> endpoints_;
  // TODO(szym): Remove. http://crbug.com/126134
  std::string canonical_name_;
};

}  // namespace net

#endif  // NET_BASE_ADDRESS_LIST_H_