threema-ios/Threema/MessageFetcher.h

//  _____ _
// |_   _| |_  _ _ ___ ___ _ __  __ _
//   | | | ' \| '_/ -_) -_) '  \/ _` |_
//   |_| |_||_|_| \___\___|_|_|_\__,_(_)
//
// Threema iOS Client
// Copyright (c) 2014-2020 Threema GmbH
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License, version 3,
// as published by the Free Software Foundation.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

#import <Foundation/Foundation.h>
#import "Conversation.h"
#import "BaseMessage.h"

#import "EntityFetcher.h"

@interface MessageFetcher : NSObject

@property (nonatomic) BOOL orderAscending;

+ (instancetype)messageFetcherFor:(Conversation *)conversation withEntityFetcher:(EntityFetcher *)entityFetcher;

- (NSInteger)count;

- (NSArray *)messagesAtOffset:(NSInteger)offset count:(NSInteger)count;

- (NSArray *)unreadMessages;

- (BaseMessage *)lastMessage;

- (NSArray *)last20Messages;

- (NSUInteger)indexForMessage:(NSData *)messageId;

@end