//
//  DataManager.m
//  Unity-iPhone
//
//  Created by zhl on 2022/11/23.
//

#import "DataManager.h"
#import "UICKeyChainStore.h"


@interface DataManager () <NSCopying>

@end

static NSString * const cebgWalletService = @"com.cebg.wallet";
//global var
static id _instance;

UICKeyChainStore *keychain;

InitType _instanceInitType;

@implementation DataManager

+ (instancetype)sharedInstanceWith:(InitType)type {
    _instanceInitType = type;
    if (type == SynLock) {
        @synchronized (self) {
            if (_instance == nil) {
                _instance = [[self alloc] init];
            }
        }
    }
    
    else {
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            _instance = [[self alloc] init];
        });
    }
    return  _instance;
}

+ (instancetype)allocWithZone:(struct _NSZone *)zone {
    if (_instanceInitType == SynLock) {
        @synchronized (self) {
            if (_instance == nil) {
                _instance = [super allocWithZone:zone];
            }
        }
    }
    else {
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            _instance = [super allocWithZone:zone];
        });
    }
    return _instance;
}

- (id)copyWithZone:(nullable NSZone *)zone {
    return _instance;
}

-(void)saveKey:(NSString *) account key:(NSString *) key {
  if (keychain == nil ){
    keychain = [UICKeyChainStore keyChainStoreWithService:cebgWalletService];
    keychain.synchronizable = YES;
  }
  keychain[account] = key;
}

-(NSString *)loadKey:(NSString *) account {
  if (keychain == nil ){
    keychain = [UICKeyChainStore keyChainStoreWithService:cebgWalletService];
    keychain.synchronizable = YES;
  }
  NSError *error;
  NSString * result = [keychain stringForKey:account error:&error];
  if (error) {
    NSLog(@"%@", error.localizedDescription);
  }
  return result;
}

@end