DeletedMessagesManager.m

#import "DeletedMessagesManager.h"

@implementation DeletedMessagesManager

NSString *const plistFileName = @"deleted_messages.plist";

+ (instancetype)sharedManager {
    static DeletedMessagesManager *sharedInstance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedInstance = [[self alloc] init];
    });
    return sharedInstance;
}

- (NSString *)plistPath {
    NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    return [documentsDirectory stringByAppendingPathComponent:plistFileName];
}

- (NSMutableDictionary *)loadPlistData {
    NSString *path = [self plistPath];
    NSMutableDictionary *data = [NSMutableDictionary dictionaryWithContentsOfFile:path];
    if (!data) {
        data = [NSMutableDictionary dictionary];
    }
    return data;
}

- (void)savePlistData:(NSDictionary *)data {
    NSString *path = [self plistPath];
    [data writeToFile:path atomically:YES];
}

- (void)saveDeletedMessageWithID:(NSString *)messageID {
    if (messageID.length == 0) {
        NSLog(@"Message ID cannot be empty.");
        return;
    }
    
    NSMutableDictionary *plistData = [self loadPlistData];
    NSString *currentDate = [[NSDate date] description];
    plistData[messageID] = currentDate;
    [self savePlistData:plistData];
    
    NSLog(@"Saved message ID: %@ with date: %@", messageID, currentDate);
}

- (BOOL)messageExistsWithID:(NSString *)messageID {
    if (messageID.length == 0) {
        NSLog(@"Message ID cannot be empty.");
        return NO;
    }
    
    NSMutableDictionary *plistData = [self loadPlistData];
    return plistData[messageID] != nil;
}

- (NSString *)dateForDeletedMessageWithID:(NSString *)messageID {
    if (messageID.length == 0) {
        NSLog(@"Message ID cannot be empty.");
        return nil;
    }
    
    NSMutableDictionary *plistData = [self loadPlistData];
    return plistData[messageID];
}
@end