/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 This is a basic Core Data based document subclass. This subclass overrides -makeWindowControllers to instantiate the window from the storyboard.

 */

#import "MyDocument.h"

#import "LTWindowController.h"

@implementation MyDocument

- (instancetype)init {

    self = [super init];

    if (self) {

        // Add your subclass-specific initialization here.

    }

    return self;

}

- (void)makeWindowControllers {

    // Create the window controller.

    LTWindowController *windowController = [[NSStoryboard storyboardWithName:@"Storyboard" bundle:nil] instantiateControllerWithIdentifier:@"documentWindowController"];

    // Make it part of the document.

    [self addWindowController:windowController];

    // Get a reference to the view controller.

    NSViewController *viewController = windowController.contentViewController;

    // And set its represented object to the MOC that is the data model.

    viewController.representedObject = self.managedObjectContext;

}

- (void)windowControllerDidLoadNib:(NSWindowController *) aController

{

    [super windowControllerDidLoadNib:aController];

    // Add any code here that needs to be executed once the windowController has loaded the document's window.

}

- (NSData *)dataOfType:(NSString *)typeName error:(NSError **)outError {

    // Insert code here to write your document to data of the specified type. If outError != NULL, ensure that you create and set an appropriate error when returning nil.

    // You can also choose to override -fileWrapperOfType:error:, -writeToURL:ofType:error:, or -writeToURL:ofType:forSaveOperation:originalContentsURL:error: instead.

    [NSException raise:@"UnimplementedMethod" format:@"%@ is unimplemented", NSStringFromSelector(_cmd)];

    return nil;

}

- (BOOL)readFromData:(NSData *)data ofType:(NSString *)typeName error:(NSError **)outError {

    // Insert code here to read your document from the given data of the specified type. If outError != NULL, ensure that you create and set an appropriate error when returning NO.

    // You can also choose to override -readFromFileWrapper:ofType:error: or -readFromURL:ofType:error: instead.

    // If you override either of these, you should also override -isEntireFileLoaded to return NO if the contents are lazily loaded.

    [NSException raise:@"UnimplementedMethod" format:@"%@ is unimplemented", NSStringFromSelector(_cmd)];

    return YES;

}

- (NSError *)willPresentError:(NSError *)error {

    // Only deal with Core Data Errors

    if (!([[error domain] isEqualToString:NSCocoaErrorDomain])) {

        return error;

    }

    NSInteger errorCode = [error code];

    if ((errorCode < NSValidationErrorMinimum) || (errorCode > NSValidationErrorMaximum)) {

        return error;

    }

    // If there is only 1 error, let the usual alert display it

    if (errorCode != NSValidationMultipleErrorsError) {

        return error;

    }

    // Get the errors. NSValidationMultipleErrorsError - the errors are in an array in the userInfo dictionary for key NSDetailedErrorsKey

    NSArray *detailedErrors = [[error userInfo] objectForKey:NSDetailedErrorsKey];

    NSUInteger errorCount = [detailedErrors count];

    NSMutableString *errorString = [NSMutableString stringWithFormat:@"There are %lu validation errors:-", errorCount];

    for (int i = 0; i < errorCount; i++) {

        [errorString appendFormat:@"%@\n",

         [[detailedErrors objectAtIndex:i] localizedDescription]];

    }

    // Create a new error with the new userInfo and return it

    NSMutableDictionary *newUserInfo = [NSMutableDictionary dictionaryWithDictionary:[error userInfo]];

    [newUserInfo setObject:errorString forKey:NSLocalizedDescriptionKey];

    NSError *newError = [NSError errorWithDomain:[error domain] code:[error code] userInfo:newUserInfo];

    return newError;

}

@end