//
//  LoginViewController.m
//  Juick
//
//  Created by Vitaly on 30.01.14.
//  Copyright (c) 2014 com.juick. All rights reserved.
//

#import "LoginViewController.h"
#import "User.h"

NSString * const UserChangedNotificationName = @"UserSignedIn";

@interface LoginViewController()
@property (nonatomic, assign) int paddingValue;
-(void) refreshState;
@end

@implementation LoginViewController

- (void) awakeFromNib {
    [super awakeFromNib];
    [self.view setBackgroundColor:[UIColor colorNamed:@"Background"]];
    
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
                                                                                          target:self action:@selector(cancelSignIn)];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave
                                                                                           target:self action:@selector(doneSignIn)];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
    [self.authorizationField.button addTarget:self action:@selector(signInWithApple) forControlEvents:UIControlEventTouchUpInside];
}

- (void)viewWillAppear:(BOOL)animated {
    [self refreshState];
}

-(void) keyboardDidShow:(NSNotification *)sender {
    CGRect keyboardRect = [sender.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    self.bottomConstraint.constant = keyboardRect.size.height - self.view.safeAreaInsets.bottom + self.paddingValue;
    [self.view layoutIfNeeded];
}
-(void) keyboardWillHide:(NSNotification *)sender {
    self.bottomConstraint.constant = self.paddingValue;
    [self.view layoutIfNeeded];
}


- (void) cancelSignIn {
    [self.navigationController dismissViewControllerAnimated:YES completion:nil];
}

- (void) doneSignIn {
    
    [[NSURLCache sharedURLCache] removeAllCachedResponses];
    [[AppDelegate shared].api authenticateWithUser:self.usernameField.text password:self.passwordField.text callback:^(BOOL success){
        if (success) {
            [[NSNotificationCenter defaultCenter] postNotificationName:UserChangedNotificationName object:nil];
            [[AppDelegate shared] registerForRemoteNotifications];
            [self.navigationController dismissViewControllerAnimated:YES completion:nil];
        }
    }];
}

- (void)refreshState {
    if ([AppDelegate shared].api.currentUser) {
        self.title = @"Profile";
        [self.authorizationField setHidden:YES];
        [self.usernameField setHidden:YES];
        [self.passwordField setHidden:YES];
        [self.currentUser setHidden:NO];
        self.currentUser.text = [AppDelegate shared].api.currentUser.uname;
        __weak UIImageView *weakAttach = self.imageView;
        [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:[AppDelegate shared].api.currentUser.avatar] callback:^(NSData *data) {
            [UIView transitionWithView:weakAttach
                              duration:0.3
                               options:UIViewAnimationOptionTransitionCrossDissolve
                            animations:^{
                                weakAttach.image = [UIImage imageWithData:data];
                            }
                            completion:nil];
        }];
        [self.signOutButton setHidden:NO];
    } else {
        self.title = @"Sign in";
        self.imageView.image = [UIImage imageNamed:@"Splash"];
        [self.authorizationField setHidden:NO];
        [self.usernameField setHidden:NO];
        [self.passwordField setHidden:NO];
        [self.currentUser setHidden:YES];
        [self.signOutButton setHidden:YES];
    }
}

- (IBAction)signoutPressed:(id)sender {
    [[AppDelegate shared].api signout];
    [[NSURLCache sharedURLCache] removeAllCachedResponses];
    [self.navigationController dismissViewControllerAnimated:YES completion:^{
        [[NSNotificationCenter defaultCenter] postNotificationName:UserChangedNotificationName object:nil];
    }];
}

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithAuthorization:(ASAuthorization *)authorization {
    NSLog(@"");
}

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithError:(NSError *)error {
    NSLog(@"");
}

-(void) signInWithApple {
    ASAuthorizationAppleIDProvider *appleIDProvider = [ASAuthorizationAppleIDProvider new];
    ASAuthorizationAppleIDRequest *request = [appleIDProvider createRequest];
    request.requestedScopes = @[ASAuthorizationScopeFullName, ASAuthorizationScopeEmail];
    
    ASAuthorizationController *authorizationController = [[ASAuthorizationController alloc] initWithAuthorizationRequests:@[request]];
    authorizationController.delegate = self;
    authorizationController.presentationContextProvider = self;
    [authorizationController performRequests];
}

@end