//
//  PNObjectModel.m
//  Pods
//
//  Created by Giuseppe Nucifora on 16/01/16.
//
//

#import "PNObjectModel.h"
#import "PNObject.h"
#import "PEARFileManager.h"

#define DEF_DOCUMENT_ROOT @"Documents"

@interface PNObjectModel()

@property (nonatomic, strong) PEARFileManager *fileManager;

@end

@implementation PNObjectModel

static PNObjectModel *SINGLETON = nil;

static bool isFirstAccess = YES;

#pragma mark Public Method

+ (instancetype) sharedInstance
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        isFirstAccess = NO;
        SINGLETON = [[super allocWithZone:NULL] init];
    });
    
    return SINGLETON;
}

- (NSString * _Nullable) objectName:(id _Nonnull) object {
    NSString *className;
    
    BOOL isPNObjectSubclass = [[object class] isSubclassOfClass:[PNObject class]];
    
    if(isPNObjectSubclass) {
        
        if ([[object class] conformsToProtocol:@protocol(PNObjectSubclassing)] && [(PNObject*)[object subClassDelegate] respondsToSelector:@selector(objectClassName)]) {
            
            return className = (NSString *)[[(PNObject*)object class] performSelector:@selector(objectClassName)];
            
        }
    }
    return nil;
}

- (BOOL) issetPNObjectModelForObject:(id _Nonnull) object {
    
    NSString *className = [self objectName:object];
    
    if (!className) {
        return NO;
    }
    
    return [_fileManager checkPath:className];
}

#pragma mark -

+ (id) allocWithZone:(NSZone *)zone
{
    return [self sharedInstance];
}

+ (id)copyWithZone:(struct _NSZone *)zone
{
    return [self sharedInstance];
}

+ (id)mutableCopyWithZone:(struct _NSZone *)zone
{
    return [self sharedInstance];
}

- (id)copy
{
    return [[PNObjectModel alloc] init];
}

- (id)mutableCopy
{
    return [[PNObjectModel alloc] init];
}

- (id) init
{
    if(SINGLETON){
        return SINGLETON;
    }
    if (isFirstAccess) {
        [self doesNotRecognizeSelector:_cmd];
    }
    self = [super init];
    
    if (self) {
        _fileManager = [PEARFileManager sharedInstatnce];
        
        [_fileManager setRootDirectory:k_ROOT_DIR_DOCUMENTS];
    }
    return self;
}


- (id _Nonnull) saveLocally:(id _Nonnull) object {
    
    BOOL isPNObjectSubclass = [[object class] isSubclassOfClass:[PNObject class]];
    
    if(isPNObjectSubclass) {
        
        if ([[object class] conformsToProtocol:@protocol(PNObjectSubclassing)]) {
            
            if ([self issetPNObjectModelForObject:object]) {
                
                
                id value;
                
                SEL selector = NSSelectorFromString(@"getObject");
                NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[[PNObject class] instanceMethodSignatureForSelector:selector]];
                [invocation setSelector:selector];
                [invocation setTarget:value];
                [invocation invoke];
                
                NSDictionary *objectDict;
                [invocation getReturnValue:&objectDict];
                
                NSLogDebug(@"%@",objectDict);
                
                NSData *objectData = [NSKeyedArchiver archivedDataWithRootObject:objectDict];
                
                [_fileManager updateFileWithData:objectData filePath:[self objectName:object] permisson:@(0755)];
            }
        }
    }
    else {
        return [NSError errorWithDomain:NSLocalizedString(@"", @"") code:<#(NSInteger)#> userInfo:<#(nullable NSDictionary *)#>]
    }
}

- (void) saveLocally:(id _Nonnull) object inBackGroundWithBlock:(nullable void (^)(BOOL saveStatus, id _Nullable responseObject, NSError * _Nullable error)) responseBlock {
    
}

- (id _Nonnull) pushObjectAndSaveLocally:(id _Nonnull) object {
    
}

- (void) pushObjectAndSaveLocally:(id _Nonnull) object inBackGroundWithBlock:(nullable void (^)(BOOL saveStatus, id _Nullable responseObject, NSError * _Nullable error)) responseBlock {
    
    
    
}

@end