//

// WallPicturesViewController.m

// TutorialBase

//

// Created by Antonio MG on 6/23/12.

// Copyright (c) 2012 AMG. All rights reserved.

//

#import "WallPicturesViewController.h"

#import "UploadImageViewController.h"

#import <Parse/Parse.h>

@interface WallPicturesViewController () {

}

@property (nonatomic, retain) NSArray *wallObjectsArray;

@property (nonatomic, retain) UIActivityIndicatorView *activityIndicator;

-(void)getWallImages;

-(void)loadWallViews;

-(void)showErrorView:errorString;

@end

@implementation WallPicturesViewController

@synthesize wallObjectsArray = _wallObjectsArray;

@synthesize wallScroll = _wallScroll;

@synthesize activityIndicator = _loadingSpinner;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

}

return self;

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

#pragma mark - View lifecycle

- (void)viewDidLoad

{

[super viewDidLoad];

}

- (void)viewDidUnload

{

[super viewDidUnload];

// Release any retained subviews of the main view.

self.wallScroll = nil;

}

-(void)viewWillAppear:(BOOL)animated

{

[super viewWillAppear:animated];

//Clean the scroll view

for (id viewToRemove in [self.wallScroll subviews]){

if ([viewToRemove isMemberOfClass:[UIView class]])

[viewToRemove removeFromSuperview];

}

//Reload the wall

[self getWallImages];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark Wall Load

//Load the images on the wall

-(void)loadWallViews

{

//Clean the scroll view

for (id viewToRemove in [self.wallScroll subviews]){

if ([viewToRemove isMemberOfClass:[UIView class]])

[viewToRemove removeFromSuperview];

}

//For every wall element, put a view in the scroll

int originY = 10;

for (PFObject *wallObject in self.wallObjectsArray){

//Build the view with the image and the comments

UIView *wallImageView = [[UIView alloc] initWithFrame:CGRectMake(10, originY, self.view.frame.size.width - 20 , 300)];

//Add the image

PFFile *image = (PFFile *)[wallObject objectForKey:@"image"];

UIImageView *userImage = [[UIImageView alloc] initWithImage:[UIImage imageWithData:image.getData]];

userImage.frame = CGRectMake(0, 0, wallImageView.frame.size.width, 200);

[wallImageView addSubview:userImage];

//Add the info label (User and creation date)

NSDate *creationDate = wallObject.createdAt;

NSDateFormatter *df = [[NSDateFormatter alloc] init];

[df setDateFormat:@"HH:mm dd/MM yyyy"];

UILabel *infoLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 210, wallImageView.frame.size.width,15)];

infoLabel.text = [NSString stringWithFormat:@"Uploaded by: %@, %@", [wallObject objectForKey:@"user"], [df stringFromDate:creationDate]];

infoLabel.font = [UIFont fontWithName:@"Arial-ItalicMT" size:9];

infoLabel.textColor = [UIColor whiteColor];

infoLabel.backgroundColor = [UIColor clearColor];

[wallImageView addSubview:infoLabel];

//Add the comment

UILabel *commentLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 240, wallImageView.frame.size.width, 15)];

commentLabel.text = [wallObject objectForKey:@"comment"];

commentLabel.font = [UIFont fontWithName:@"ArialMT" size:13];

commentLabel.textColor = [UIColor whiteColor];

commentLabel.backgroundColor = [UIColor clearColor];

[wallImageView addSubview:commentLabel];

[self.wallScroll addSubview:wallImageView];

originY = originY + wallImageView.frame.size.width + 20;

}

//Set the bounds of the scroll

self.wallScroll.contentSize = CGSizeMake(self.wallScroll.frame.size.width, originY);

}

#pragma mark Receive Wall Objects

//Get the list of images

-(void)getWallImages

{

//Prepare the query to get all the images in descending order

PFQuery *query = [PFQuery queryWithClassName:@"WallImageObject"];

[query orderByDescending:@"createdAt"];

[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {

if (!error) {

//Everything was correct, put the new objects and load the wall

self.wallObjectsArray = nil;

self.wallObjectsArray = [[NSArray alloc] initWithArray:objects];

[self loadWallViews];

} else {

NSString *errorString = [[error userInfo] objectForKey:@"error"];

UIAlertView *errorAlertView = [[UIAlertView alloc] initWithTitle:@"Error" message:errorString delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];

[errorAlertView show];

}

}];

}

#pragma mark IB Actions

-(IBAction)logoutPressed:(id)sender

{

[PFUser logOut];

[self.navigationController popViewControllerAnimated:YES];

}

#pragma mark Error Alert

-(void)showErrorView:(NSString *)errorMsg{

UIAlertView *errorAlertView = [[UIAlertView alloc] initWithTitle:@"Error" message:errorMsg delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];

[errorAlertView show];

}

@end