//
//  EQNUtility.h
//  Earthquake Network
//
//  Refactored by Andrea Busi
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Costanti.h"


@class EQNGenericValue;
@class EQNSegnalazione;

NS_ASSUME_NONNULL_BEGIN

@interface EQNUtility : NSObject

/// Converts date received from web server into Date objects
/// Time zone of the received date is Europe/Rome
/// @param dateString String date received
/// @return Date object
+ (nullable NSDate *)getDateFromString:(NSString *)dateString;

/// Creates a string for a given time interval.
/// Some examples: 1 hour ago, 25 minutes ago, 2 days ago
/// @param timeDifference Time differnce
+ (NSString *)formattedStringForTimeDifference:(NSInteger)timeDifference;

/// Clear a given string from unwanted characters
/// @param messaggio Cleaned string
+ (NSString *)clearStringMessaggi:(NSString *)messaggio;

/// Calculate time difference (in minutes) between the given date and the current timestamp
/// @param date Difference (in minutes)
+ (NSInteger)getDifferenceMinute:(NSDate *)date;

/// Store an array of custom objects to NSUserDefaults
/// @param array Array to store
/// @param keyName Key of NSUserDefault to use
+ (void)storeArray:(NSArray *)array toUserDefaultForKey:(NSString *)keyName;

/// Retrieve a saved array of custom objects from NSUserDefaults.
/// @param class Class of the objects inside the array
/// @param keyName Key of NSUserDefault to retrieve
+ (nullable NSArray *)loadArrayOfClass:(Class)class fromUserDefaultsForKey:(NSString* )keyName;

/// Store a dictionary to NSUserDefaults
/// @param dictionary Dictionary to store
/// @param keyName Key of NSUserDefault to use
+ (void)storeDictionary:(NSDictionary *)dictionary toUserDefaultForKey:(NSString *)keyName;

/// Retrieve a saved dictionary from NSUserDefaults.
/// @param keyName Key of NSUserDefault to retrieve
+ (nullable NSDictionary *)loadDictionaryFromUserDefaultsForKey:(NSString *)keyName;

/// Calculate impact time from a received push notification
/// @param info Payload of a received notification
/// @return Impact time
+ (nullable NSDate *)calculateUserSeismicTimestampFromUserInfo:(NSDictionary *)info;


@end

NS_ASSUME_NONNULL_END