/*
 * Copyright (c) 2013, Florian Zeitz <florob@babelmonkeys.de>
 * Copyright (c) 2013, 2016, Jonathan Schleifer <js@nil.im>
 *
 * https://nil.im/objxmpp/
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice is present in all copies.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
 */

#import <ObjFW/ObjFW.h>

#import "XMPPConnection.h"
#import "XMPPDiscoNode.h"

OF_ASSUME_NONNULL_BEGIN

@class XMPPJID;

/*!
 * @brief A class representing an entity responding to Service Discovery
 *	  queries
 */
@interface XMPPDiscoEntity: XMPPDiscoNode <XMPPConnectionDelegate>
{
	OFMutableDictionary *_discoNodes;
	XMPPConnection *_connection;
	OFString *_capsNode;
}

/*!
 * @brief The XMPPDiscoNodes this entity provides Services Discovery
 *	  responses for
 *
 * This usually contains at least all immediate child nodes, but may contain
 * any number of nodes nested more deeply.
 */
@property (readonly, nonatomic) OFDictionary *discoNodes;

/*!
 * The node advertised for the entity's capabilites.
 */
@property (readonly, nonatomic) OFString *capsNode;

+ (instancetype)discoNodeWithJID: (XMPPJID *)JID
			    node: (nullable OFString *)node OF_UNAVAILABLE;
+ (instancetype)discoNodeWithJID: (XMPPJID *)JID
			    node: (nullable OFString *)node
			    name: (nullable OFString *)name OF_UNAVAILABLE;

/*!
 * @brief Creates a new autoreleased XMPPDiscoEntity with the specified
 *	  connection.
 *
 * @param connection The XMPPConnection to serve responses on.
 * @return A new autoreleased XMPPDiscoEntity
 */
+ (instancetype)discoEntityWithConnection: (XMPPConnection *)connection;

/*!
 * @brief Creates a new autoreleased XMPPDiscoEntity with the specified
 *	  connection.
 *
 * @param connection The XMPPConnection to serve responses on.
 * @param capsNode The node advertised for the entity's capabilites
 * @return A new autoreleased XMPPDiscoEntity
 */
+ (instancetype)discoEntityWithConnection: (XMPPConnection *)connection
				 capsNode: (OFString *)capsNode;

- (instancetype)initWithJID: (XMPPJID *)JID
		       node: (nullable OFString *)node OF_UNAVAILABLE;
- (instancetype)initWithJID: (XMPPJID *)JID
		       node: (nullable OFString *)node
		       name: (nullable OFString *)name OF_UNAVAILABLE;

/*!
 * @brief Initializes an already allocated XMPPDiscoEntity with the specified
 *	  connection.
 *
 * @param connection The XMPPConnection to serve responses on.
 *	  This must already be bound to a resource)
 * @return An initialized XMPPDiscoEntity
 */
- (instancetype)initWithConnection: (XMPPConnection *)connection;

/*!
 * @brief Initializes an already allocated XMPPDiscoEntity with the specified
 *	  connection.
 *
 * @param connection The XMPPConnection to serve responses on.
 *	  This must already be bound to a resource)
 * @param capsNode The node advertised for the entity's capabilites
 * @return An initialized XMPPDiscoEntity
 */
- (instancetype)initWithConnection: (XMPPConnection *)connection
			  capsNode: (nullable OFString *)capsNode
    OF_DESIGNATED_INITIALIZER;

/*!
 * @brief Adds a XMPPDiscoNode to provide responses for.
 *
 * @param node The XMPPDiscoNode to provide responses for
 */
- (void)addDiscoNode: (XMPPDiscoNode *)node;

/*!
 * @brief Calculates the Entity Capabilities Hash of the entity
 *
 * @return A OFString containing the capabilities hash
 */
- (OFString *)capsHash;
@end

OF_ASSUME_NONNULL_END