/* Copyright (C) 2010 The giomm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <glibmm/object.h>
#include <giomm/asyncresult.h>
#include <giomm/dbusintrospection.h>
#include <giomm/dbusinterface.h>
#include <giomm/initable.h>
#include <giomm/asyncinitable.h>
#include <giomm/dbusconnection.h>

_DEFS(giomm,gio)
_PINCLUDE(glibmm/private/object_p.h)

namespace Gio
{

namespace DBus
{
//The GMMPROC_EXTRA_NAMESPACE() macro is a hint to generate_wrap_init.pl to put it in the DBus sub-namespace
_GMMPROC_EXTRA_NAMESPACE(DBus)

_WRAP_ENUM(ProxyFlags, GDBusProxyFlags, gtype_func g_dbus_proxy_flags_get_type, decl_prefix GIOMM_API)

/** A client-side proxy.
 * This is a base class used for proxies to access a D-Bus interface on
 * a remote object. It can be constructed for both well-known and
 * unique names.
 *
 * By default, Proxy will cache all properties (and listen to changes) of
 * the remote object, and proxy all signals that gets emitted. This behaviour
 * can be changed by passing suitable ProxyFlags when the proxy is
 * created. If the proxy is for a well-known name, the property cache is
 * flushed when the name owner vanishes and reloaded when a name owner
 * appears.
 *
 * If a Proxy is used for a well-known name, the owner of the name is
 * tracked and can be read from property_g_name_owner().
 *
 * The generic signal_properties_changed() and signal_signal() signals are
 * not very convenient to work with. Therefore, the recommended way of working
 * with proxies is to subclass Proxy, and have more natural properties and
 * signals in your derived class.
 *
 * This documentation was adapted from the C API documentation.  The C API docs
 * has more information and an example.
 *
 * @newin{2,28}
 * @ingroup DBus
 */
class GIOMM_API Proxy
: public Glib::Object,
  public Initable,
  public AsyncInitable,
  public Interface
{
  _CLASS_GOBJECT(Proxy, GDBusProxy, G_DBUS_PROXY, Glib::Object, GObject, , , GIOMM_API)
  _IMPLEMENTS_INTERFACE(Initable)
  _IMPLEMENTS_INTERFACE(AsyncInitable)
  _IMPLEMENTS_INTERFACE(DBus::Interface)

protected:

  Proxy(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  Proxy(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

public:

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new)
  static void create(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  /// Non-cancellable version of create().
  static void create(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new_finish)
  /// @throw Glib::Error.
  _WRAP_METHOD(static Glib::RefPtr<Gio::DBus::Proxy> create_finish(const Glib::RefPtr<AsyncResult>& res), g_dbus_proxy_new_finish, errthrow)

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new_sync)
  static Glib::RefPtr<Proxy>
  create_sync(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  /// Non-cancellable version of create_sync().
  static Glib::RefPtr<Proxy>
  create_sync(const Glib::RefPtr<Connection>& connection,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new_for_bus)
  static void create_for_bus(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  /// Non-cancellable version of create_for_bus().
  static void create_for_bus(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const SlotAsyncReady& slot,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new_for_bus_finish)
  /// @throw Glib::Error.
  _WRAP_METHOD(static Glib::RefPtr<Gio::DBus::Proxy> create_for_bus_finish(const Glib::RefPtr<AsyncResult>& res), g_dbus_proxy_new_for_bus_finish, errthrow)

  _WRAP_METHOD_DOCS_ONLY(g_dbus_proxy_new_for_bus_sync)
  static Glib::RefPtr<Proxy>
  create_for_bus_sync(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<Cancellable>& cancellable,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  /// Non-cancellable version of create_for_bus_sync().
  static Glib::RefPtr<Proxy>
  create_for_bus_sync(BusType bus_type,
    const Glib::ustring& name,
    const Glib::ustring& object_path,
    const Glib::ustring& interface_name,
    const Glib::RefPtr<InterfaceInfo>& info = {},
    ProxyFlags flags = ProxyFlags::NONE);

  _WRAP_METHOD(ProxyFlags get_flags() const, g_dbus_proxy_get_flags)

  _WRAP_METHOD(Glib::RefPtr<Connection> get_connection(), g_dbus_proxy_get_connection, refreturn)
  _WRAP_METHOD(Glib::RefPtr<const Connection> get_connection() const, g_dbus_proxy_get_connection, refreturn, constversion)

  _WRAP_METHOD(Glib::ustring get_name() const, g_dbus_proxy_get_name)
  _WRAP_METHOD(Glib::ustring get_name_owner() const, g_dbus_proxy_get_name_owner)
  _WRAP_METHOD(Glib::ustring get_object_path() const, g_dbus_proxy_get_object_path)
  _WRAP_METHOD(Glib::ustring get_interface_name() const, g_dbus_proxy_get_interface_name)

  _WRAP_METHOD(int get_default_timeout() const, g_dbus_proxy_get_default_timeout)
  _WRAP_METHOD(void set_default_timeout(int timeout_msec = -1), g_dbus_proxy_set_default_timeout)

  /** Looks up the value for a property from the cache. This call does no
   * blocking IO.
   *
   * If proxy has an expected interface (see property_g_interface_info()),
   * then @a property_name (for existence) is checked against it.
   *
   * @param property An output parameter in which to hold to the variant
   * instance that holds the value for @a property_name.
   * @param property_name Property name.
   *
   * @newin{2,28}
   */
  void get_cached_property(Glib::VariantBase& property,
    const Glib::ustring& property_name) const;
  _IGNORE(g_dbus_proxy_get_cached_property)

  _WRAP_METHOD(void set_cached_property(const Glib::ustring& property_name, const Glib::VariantBase& value), g_dbus_proxy_set_cached_property)

#m4 _CONVERSION(`gchar**', `std::vector<Glib::ustring>', `Glib::ArrayHandler<Glib::ustring>::array_to_vector($3, Glib::OWNERSHIP_DEEP)')
  _WRAP_METHOD(std::vector<Glib::ustring> get_cached_property_names() const, g_dbus_proxy_get_cached_property_names)

  _WRAP_METHOD(void set_interface_info(const Glib::RefPtr<InterfaceInfo>& info), g_dbus_proxy_set_interface_info)
  _WRAP_METHOD(Glib::RefPtr<InterfaceInfo> get_interface_info(), g_dbus_proxy_get_interface_info, refreturn)
  _WRAP_METHOD(Glib::RefPtr<const InterfaceInfo> get_interface_info() const, g_dbus_proxy_get_interface_info, refreturn, constversion)

  _WRAP_METHOD(
    void call(
      const Glib::ustring&               method_name{.},
      const SlotAsyncReady&              slot{callback?},
      const Glib::RefPtr<Cancellable>&   cancellable{.?},
      const Glib::VariantContainerBase&  parameters{.} = {},
      int                                timeout_msec{.} = -1,
      CallFlags                          flags{.} = Gio::DBus::CallFlags::NONE
    ),
    g_dbus_proxy_call, slot_name slot, slot_callback giomm_SignalProxy_async_callback
  )

  /** Finishes an operation started with call().
   *
   * @param res An AsyncResult obtained from the SlotAsyncReady passed to
   * call().
   * @result A Variant tuple with return values.
   *
   * @throw Glib::Error.
   */
  _WRAP_METHOD(Glib::VariantContainerBase call_finish(const Glib::RefPtr<AsyncResult>& res), g_dbus_proxy_call_finish, errthrow)

  _WRAP_METHOD(
    Glib::VariantContainerBase call_sync(
      const Glib::ustring&               method_name{.},
      const Glib::RefPtr<Cancellable>&   cancellable{.?},
      const Glib::VariantContainerBase&  parameters{.} = {},
      int                                timeout_msec{.} = -1,
      CallFlags                          flags{.} = Gio::DBus::CallFlags::NONE
    ),
    g_dbus_proxy_call_sync, errthrow
  )

  _WRAP_METHOD(
    void call(
      const Glib::ustring&                method_name{.},
      const Glib::VariantContainerBase&   parameters{.},
      const SlotAsyncReady&               slot{callback?},
      const Glib::RefPtr<Cancellable>&    cancellable{.?},
      const Glib::RefPtr<UnixFDList>&     fd_list{.},
      int                                 timeout_msec{.} = -1,
      CallFlags                           flags{.} = Gio::DBus::CallFlags::NONE
    ),
    g_dbus_proxy_call_with_unix_fd_list, ifdef G_OS_UNIX,
      slot_name slot, slot_callback giomm_SignalProxy_async_callback
  )

  /** Finishes an operation started with call() (with a UnixFDList).
   * @param res A AsyncResult obtained from the SlotAsyncReady passed to
   * call().
   * @param out_fd_list Return location for a UnixFDList.
   * @result A Variant tuple with return values.
   * @throw Glib::Error.
   * @newin{2,34}
   */
  _WRAP_METHOD(Glib::VariantContainerBase call_finish(const Glib::RefPtr<AsyncResult>& res{.}, Glib::RefPtr<UnixFDList>& out_fd_list{.>>}), g_dbus_proxy_call_with_unix_fd_list_finish, errthrow, ifdef G_OS_UNIX)

  _WRAP_METHOD(
    Glib::VariantContainerBase call_sync(
      const Glib::ustring&                method_name{.},
      const Glib::VariantContainerBase&   parameters{.},
      const Glib::RefPtr<Cancellable>&    cancellable{.?},
      const Glib::RefPtr<UnixFDList>&     fd_list{.},
      Glib::RefPtr<UnixFDList>&           out_fd_list{.>>},
      int                                 timeout_msec{.} = -1,
      CallFlags                           flags{.} = Gio::DBus::CallFlags::NONE
    ),
    g_dbus_proxy_call_with_unix_fd_list_sync, errthrow, ifdef G_OS_UNIX
  )

 //_WRAP_PROPERTY("g-bus-type", BusType) // write-only construct-only
 _WRAP_PROPERTY("g-connection", Glib::RefPtr<Connection>)
 _WRAP_PROPERTY("g-default-timeout", int)
 _WRAP_PROPERTY("g-flags", ProxyFlags)
 _WRAP_PROPERTY("g-interface-info", Glib::RefPtr<InterfaceInfo>)
 _WRAP_PROPERTY("g-interface-name", Glib::ustring)
 _WRAP_PROPERTY("g-name", Glib::ustring)
 _WRAP_PROPERTY("g-name-owner", Glib::ustring)
 _WRAP_PROPERTY("g-object-path", Glib::ustring)

  using MapChangedProperties = std::map<Glib::ustring, Glib::VariantBase>;

  // TODO: Should the signal names match the C API names (ie. the C API names
  // are g_signal_name while these are just signal_name).

  // The DBus API ensures that the variant changed_properties is of type "DICT<STRING,VARIANT>"
  #m4 _CONVERSION(`GVariant*', `const MapChangedProperties&', `Glib::Variant<MapChangedProperties>($3, true).get()')
  #m4 _CONVERSION(`const MapChangedProperties&', `GVariant*', `const_cast<GVariant*>(Glib::Variant<MapChangedProperties>::create($3).gobj())')
  #m4 _CONVERSION(`const std::vector<Glib::ustring>&', `const gchar*const*',`Glib::ArrayHandler<Glib::ustring>::vector_to_array($3).data()')
  #m4 _CONVERSION(`const gchar*const*', `const std::vector<Glib::ustring>&', `Glib::ArrayHandler<Glib::ustring>::array_to_vector($3, Glib::OWNERSHIP_NONE)')
  _WRAP_SIGNAL(void properties_changed(const MapChangedProperties& changed_properties, const std::vector<Glib::ustring>& invalidated_properties), "g-properties-changed")

#m4 _CONVERSION(`GVariant*', `const Glib::VariantContainerBase&', `Glib::VariantContainerBase($3, true)')
#m4 _CONVERSION(`const Glib::VariantContainerBase&', `GVariant*', `const_cast<GVariant*>(($3).gobj())')
  _WRAP_SIGNAL(void signal(const Glib::ustring& sender_name, const Glib::ustring& signal_name, const Glib::VariantContainerBase& parameters), "g-signal",
    detail_name signal_name, two_signal_methods)
};

} //namespace

} // namespace Gio