//
//  MasterViewController.m
//  Juick
//
//  Created by Vitaly Takmazov on 26.10.13.
//  Copyright (c) 2013 com.juick. All rights reserved.
//

#import "SWRevealViewController/SWRevealViewController.h"
#import "MessagesViewController.h"
#import "MessageCell.h"

#import "Message.h"
#import "ColorScheme.h"

#import "NewPostViewController.h"


#import "NSURL+PathParameters.h"

static NSString *CellIdentifier = @"MessageCell";


@interface MessagesViewController ();

@property(nonatomic, strong) NSMutableArray *messages;
@property(nonatomic, assign) Boolean dataLoading;
@property(nonatomic, strong) NSString *path;
@property(nonatomic, strong) NSMutableDictionary *params;
@property(nonatomic, strong) dispatch_queue_t concurrent_queue;
@property (nonatomic, readwrite, retain) UIView *inputAccessoryView;

@end

@implementation MessagesViewController

- (id)init {
    if (self = [super init]) {
        self.concurrent_queue = dispatch_queue_create("Queue", DISPATCH_QUEUE_SERIAL);
    };
    return self;
}

- (void)loadFromPath:(NSString *)messagesPath withParams:(NSDictionary *)params withTitle:(NSString *)title
{
    [self setPath:messagesPath];
    [self setParams:[[NSMutableDictionary alloc] initWithDictionary:params]];
    self.title = title;
    __weak MessagesViewController * weakSelf = self;
    dispatch_sync(self.concurrent_queue, ^{
        [self.messages removeAllObjects];
        [weakSelf refreshData];
    });
}

- (void) refreshData {
    self.dataLoading = YES;
    [Message pullNextFromPath:self.path params:self.params callback:^(NSArray *next) {
        NSArray *newMsgs = next;
        if ([self.path isEqualToString:[Message threadUrl]]) {
            NSUInteger lastRid = [((Message *)[self.messages lastObject]).rid unsignedIntegerValue];
            NSUInteger count = [next count] - 1;
            NSUInteger oldCount = [self.messages count];
            if (oldCount > 0) {
                if (lastRid && lastRid < count) {
                    newMsgs = [next subarrayWithRange:NSMakeRange(lastRid, count - lastRid)];
                } else {
                    return;
                }
            }
        }
        [self.messages addObjectsFromArray:newMsgs];
        [self.tableView reloadData];
        [self.refreshControl endRefreshing];
        self.dataLoading = NO;
    }];
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return UIStatusBarStyleLightContent;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.dataLoading = NO;
    [self.view setBackgroundColor:[ColorScheme mainBackground]];
    self.messages = [NSMutableArray array];
    
    SWRevealViewController *revealController = [self revealViewController];
    if (revealController) {
        // TODO: add to thread view too
        [self.view addGestureRecognizer:[revealController panGestureRecognizer]];
    }

    [self.tableView registerNib:[UINib nibWithNibName:@"MessageCell" bundle:nil] forCellReuseIdentifier:CellIdentifier];
    self.tableView.rowHeight = UITableViewAutomaticDimension;
    self.tableView.estimatedRowHeight = 500.0f;
    self.refreshControl = [UIRefreshControl new];
    [self.refreshControl addTarget:self action:@selector(refreshData) forControlEvents:UIControlEventValueChanged];}

- (void) composePressed {
    CATransition* transition = [CATransition animation];
    transition.duration = 0.3;
    transition.type = kCATransitionFade;
    transition.subtype = kCATransitionFromTop;
    
    [self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
    [self.navigationController pushViewController:[[NewPostViewController alloc] init] animated:NO];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(contentSizeCategoryChanged:)
                                                 name:UIContentSizeCategoryDidChangeNotification
                                                   object:nil];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                        name:UIContentSizeCategoryDidChangeNotification
                                                        object:nil];    
}

- (void)contentSizeCategoryChanged:(NSNotification *)notification
{
    [self.tableView reloadData];
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    __block NSInteger count;
    dispatch_sync(self.concurrent_queue, ^{
        count = self.messages.count;
    });
    return count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    __block Message *msg;
    dispatch_sync(self.concurrent_queue, ^{
        msg = [self.messages objectAtIndex:indexPath.row];
    });
    cell.layer.borderWidth = 6;
    cell.layer.borderColor = [ColorScheme mainBackground].CGColor;
    [cell setMessage:msg];
    if ([msg.attach length] > 0) {
        [cell.attach yy_setImageWithURL:[NSURL URLWithString:msg.attach] placeholder:[UIImage imageNamed:@"AttachPlaceholder"] options:YYWebImageOptionProgressiveBlur | YYWebImageOptionSetImageWithFadeAnimation completion:^(UIImage * _Nullable image, NSURL * _Nonnull url, YYWebImageFromType from, YYWebImageStage stage, NSError * _Nullable error) {
            [[NSOperationQueue mainQueue] addOperationWithBlock:^{
                [cell setNeedsUpdateConstraints];
                [cell updateConstraintsIfNeeded];
                [cell setNeedsLayout];
                [cell layoutIfNeeded];
            }];
        }];
        
    } else {
        cell.attach.image = nil;
    }
    
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([self.path isEqualToString:[Message threadUrl]])
        return;
    __block Message *msg;
    dispatch_sync(self.concurrent_queue, ^{
        msg = [self.messages objectAtIndex:indexPath.row];
    });
    MessagesViewController *threadViewController = [[MessagesViewController alloc] init];
    [threadViewController loadFromPath:[Message threadUrl] withParams:[NSDictionary dictionaryWithObjectsAndKeys:msg.mid, @"mid", nil] withTitle:@"Thread"];
    [self.navigationController pushViewController:threadViewController animated:NO];
}

-(void)scrollViewDidScroll:(UIScrollView *)scrollView_ {
    CGFloat actualPosition = scrollView_.contentOffset.y;
    CGFloat contentHeight = scrollView_.contentSize.height - scrollView_.contentSize.height / 2;
    if (actualPosition >= contentHeight && !self.dataLoading) {
        __block Message *lastMsg;
        dispatch_sync(self.concurrent_queue, ^{
            lastMsg = [self.messages lastObject];
            NSNumber *lastMid = lastMsg.mid;
            if (![self.path isEqualToString:[Message threadUrl]]) {
                [self.params setValue:lastMid forKey:@"before_mid"];
            }
            [self refreshData];
        });
    }
}

- (BOOL) canBecomeFirstResponder {
    return [self.path isEqualToString:[Message threadUrl]];
}

- (UIView *)inputAccessoryView {
    if (!_inputAccessoryView) {
        CGRect viewBounds = self.view.bounds;
        CGRect frame = CGRectMake(0, viewBounds.size.height - PHFComposeBarViewInitialHeight, viewBounds.size.width,
                                  PHFComposeBarViewInitialHeight);
        PHFComposeBarView *_view = [[PHFComposeBarView alloc] initWithFrame:frame];
        _view.backgroundColor = [UIColor whiteColor];
        _view.buttonTintColor = [ColorScheme linkColor];
        _view.maxLinesCount = 4;
        _view.utilityButtonImage = [UIImage imageNamed:@"Camera"];
        _view.delegate = self;
        _inputAccessoryView = _view;
    }
    return _inputAccessoryView;
}

@end