IEMContactManager.h

#import <Foundation/Foundation.h>
#import "EMCommonDefs.h"
#import "EMContactManagerDelegate.h"
#import "EMContact.h"
#import "EMCursorResult.h"

@class EMError;

@protocol IEMContactManager <NSObject>

@required

#pragma mark - Delegate

- (void)addDelegate:(id<EMContactManagerDelegate> _Nonnull)aDelegate
      delegateQueue:(dispatch_queue_t)aQueue;

- (void)removeDelegate:(id _Nonnull)aDelegate;


#pragma mark - Contact Operations

- (NSArray<NSString *> *_Nullable )getContacts;

- (NSArray<EMContact*>* _Nullable)getAllContacts;

- (void)setContactRemark:(NSString* _Nonnull)userId remark:(NSString*_Nullable)remark completion:(void (^_Nullable)(EMContact* _Nullable contact, EMError * _Nullable aError))aCompletionBlock;

- (EMContact* _Nullable)getContact:(NSString* _Nonnull)userId;

- (void)getAllContactsFromServerWithCompletion:(void (^_Nullable)(NSArray<EMContact *>* _Nullable aList, EMError* _Nullable aError))aCompletionBlock;

- (void)getContactsFromServerWithCursor:(NSString* _Nullable)cursor pageSize:(NSUInteger)pageSize completion:(void (^_Nonnull)(EMCursorResult<EMContact*> * _Nullable aResult, EMError * _Nullable aError))aCompletionBlock;


- (void)getContactsFromServerWithCompletion:(void (^)(NSArray<NSString *> *_Nullable aList, EMError *aError_Nullable ))aCompletionBlock;

- (NSArray<NSString *> *_Nullable )getContactsFromServerWithError:(EMError **_Nullable )pError;

- (EMError *_Nullable )addContact:(NSString *_Nonnull)aUsername
                          message:(NSString *_Nullable )aMessage;

- (void)addContact:(NSString *_Nonnull)aUsername
           message:(NSString *_Nullable )aMessage
        completion:(void (^_Nullable )(NSString *_Nullable aUsername, EMError *_Nullable aError))aCompletionBlock;

- (EMError *_Nullable )deleteContact:(NSString *_Nonnull)aUsername
                isDeleteConversation:(BOOL)aIsDeleteConversation;

- (void)deleteContact:(NSString *_Nonnull)aUsername
 isDeleteConversation:(BOOL)aIsDeleteConversation
           completion:(void (^_Nullable )(NSString *_Nullable aUsername, EMError *_Nullable aError))aCompletionBlock;

- (void)approveFriendRequestFromUser:(NSString *_Nonnull)aUsername
                          completion:(void (^_Nullable )(NSString *_Nullable aUsername, EMError *_Nullable aError))aCompletionBlock;

- (void)declineFriendRequestFromUser:(NSString *_Nonnull)aUsername
                          completion:(void (^_Nullable )(NSString *aUsername, EMError *_Nullable aError))aCompletionBlock;


#pragma mark - Blacklist Operations

- (NSArray<NSString *> *_Nullable )getBlackList;

- (void)getBlackListFromServerWithCompletion:(void (^_Nullable )(NSArray<NSString *> *_Nullable aList, EMError *_Nullable aError))aCompletionBlock;

- (NSArray<NSString *> *_Nullable )getBlackListFromServerWithError:(EMError **_Nullable )pError;


- (EMError *_Nullable )addUserToBlackList:(NSString *_Nonnull)aUsername;


- (void)addUserToBlackList:(NSString *_Nonnull)aUsername
                completion:(void (^_Nullable )(NSString *_Nullable aUsername, EMError *_Nullable aError))aCompletionBlock;

- (EMError *_Nullable )removeUserFromBlackList:(NSString *_Nonnull)aUsername;

- (void)removeUserFromBlackList:(NSString *_Nonnull)aUsername
                     completion:(void (^_Nullable )(NSString *_Nullable aUsername, EMError *_Nullable aError))aCompletionBlock;

- (EMError *_Nullable )acceptInvitationForUsername:(NSString *_Nonnull)aUsername;

- (EMError *_Nullable )declineInvitationForUsername:(NSString *_Nonnull)aUsername;

#pragma mark - Other platform

- (NSArray<NSString *> *_Nullable )getSelfIdsOnOtherPlatformWithError:(EMError **_Nullable )pError;

- (void)getSelfIdsOnOtherPlatformWithCompletion:(void (^_Nullable)(NSArray<NSString *> *_Nullable aList, EMError *_Nullable aError))aCompletionBlock;

@end