/*

     File: APLProfileViewController.m

 Abstract: View controller to handle displaying, editing, and AirDropping an instance of the custom APLProfile class.

  Version: 1.0

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 */

#import "APLAppDelegate.h"

#import "APLProfileViewController.h"

#import "APLProfile.h"

int const kAspectFillRow = 0;

int const kAspectFitRow = 1;

@interface APLProfileViewController ()

@property (weak, nonatomic) IBOutlet UIToolbar *toolbar;

@property (weak, nonatomic) IBOutlet UITextField *nameTextField;

@property (weak, nonatomic) IBOutlet UIImageView *profileImageView;

@property (weak, nonatomic) IBOutlet UIBarButtonItem *shareItem;

@property (strong, nonatomic) UIPopoverController *activityPopover;

@property (strong, nonatomic) UIBarButtonItem *doneButton;

@end

@implementation APLProfileViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    if (self.interactive) {

        //Set up done button that appears when text is being edited.

        self.doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(finishEditing)];

    }

    else

    {

        //Interactivity is turned off when the view is used to display received profiles.

        [self.toolbar setHidden:YES];

        [self.nameTextField setEnabled:NO];

        [self.profileImageView setUserInteractionEnabled:NO];

        [self.profileImageView setBackgroundColor:[UIColor whiteColor]];

    }

    if (self.profile) {

        //Set user interface values.

        self.nameTextField.text = self.profile.name;

        [self.profileImageView setImage:self.profile.image];

        if (self.profile.imageContentMode == UIViewContentModeScaleAspectFill) {

            self.profileImageView.contentMode = UIViewContentModeScaleAspectFill;

        }

    }

}

- (void)viewWillAppear:(BOOL)animated

{

    //Register for when the save window appears so the keyboard won't conflict with it.

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveWindowWillAppear) name:DisplayingSaveWindowNotification object:nil];

}

- (void)viewWillDisappear:(BOOL)animated

{

    [[NSNotificationCenter defaultCenter] removeObserver:self name:DisplayingSaveWindowNotification object:nil];

}

#pragma mark - Actions

- (IBAction)openActivitySheet:(id)sender

{

    //Create an activity view controller with the profile as its activity item. APLProfile conforms to the UIActivityItemSource protocol.

    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[self.profile] applicationActivities:nil];

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {

        //iPhone, present activity view controller as is.

        [self presentViewController:activityViewController animated:YES completion:nil];

    }

    else

    {

        //iPad, present the view controller inside a popover.

        if (![self.activityPopover isPopoverVisible]) {

            self.activityPopover = [[UIPopoverController alloc] initWithContentViewController:activityViewController];

            [self.activityPopover presentPopoverFromBarButtonItem:self.shareItem permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

        }

        else

        {

            //Dismiss if the button is tapped while popover is visible.

            [self.activityPopover dismissPopoverAnimated:YES];

        }

    }

}

- (void)saveWindowWillAppear

{

    //Remove keyboard if needed.

    [self.nameTextField resignFirstResponder];

}

- (IBAction)openAspectModeActionSheet:(id)sender {

    //Display action sheet to allow the user to pick between content modes for the profile image.

    NSString *titleString = NSLocalizedString(@"Choose Image Content Mode", @"Title for aspect ratio action sheet");

    NSString *cancelString = NSLocalizedString(@"Cancel", @"Cancel for aspect ratio action sheet");

    NSString *aspectFitString = NSLocalizedString(@"Aspect Fit", @"Aspect fit button title for aspect ratio action sheet");

    NSString *aspectFillString = NSLocalizedString(@"Aspect Fill", @"Aspect fill button title fill button titletle for aspect ratio action sheet");

    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:titleString

                                                             delegate:self

                                                    cancelButtonTitle:cancelString

                                               destructiveButtonTitle:nil

                                                    otherButtonTitles:aspectFillString, aspectFitString, nil];

    [actionSheet showInView:self.view];

}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

    //Handle the user's choice of content mode for the profile image.

    if (buttonIndex == kAspectFillRow) {

        self.profileImageView.contentMode = UIViewContentModeScaleAspectFill;

        self.profile.imageContentMode = UIViewContentModeScaleAspectFill;

    }

    else if (buttonIndex == kAspectFitRow)

    {

        self.profileImageView.contentMode = UIViewContentModeScaleAspectFit;

        self.profile.imageContentMode = UIViewContentModeScaleAspectFit;

    }

}

#pragma mark - Editing

- (void)finishEditing

{

    [self.view endEditing:YES];

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    [self.view endEditing:YES];

    [super touchesBegan:touches withEvent:event];

}

#pragma mark - UITextFieldDelegate

- (void)textFieldDidBeginEditing:(UITextField *)textField

{

    [self.navigationItem setRightBarButtonItem:self.doneButton];

}

- (void)textFieldDidEndEditing:(UITextField *)textField

{

    if (![self.profile.name isEqualToString:textField.text]) {

        self.profile.name = textField.text;

        [self.delegate profileViewController:self profileDidChange:self.profile];

    }

    [textField resignFirstResponder];

    self.navigationItem.rightBarButtonItem = nil;

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    //Resign when the keyboard done button is tapped.

    [textField resignFirstResponder];

    return YES;

}

@end