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

#import "MessagesViewController.h"
@import YYWebImage;
#import "MessageCell.h"

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

#import "NewPostViewController.h"
#import "LoginViewController.h"
#import "ThreadViewController.h"


#import "NSURL+PathParameters.h"


@interface MessagesViewController ();

@property(nonatomic, strong) NSMutableArray *messages;
@property(nonatomic, assign) Boolean dataLoading;
@end

@implementation MessagesViewController

- (void) refreshData {
    self.dataLoading = YES;
    [[APIClient sharedClient] pullNextFromPath:self.path params:self.params callback:^(NSArray *next, NSError *err) {
        NSArray *newMsgs = next;
        if ([self.path isEqualToString:[APIClient 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];
    self.params = [NSMutableDictionary new];
    
    self.tableView.rowHeight = UITableViewAutomaticDimension;
    self.tableView.estimatedRowHeight = 500.0f;
    self.refreshControl = [UIRefreshControl new];
    [self.refreshControl addTarget:self action:@selector(refreshData) forControlEvents:UIControlEventValueChanged];
    if ([User isAuthenticated]) {
        [User checkIsValid:^(BOOL success) {
            if (success) {
                self.path = [APIClient feedUrl];
                [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert|UIUserNotificationTypeSound|UIUserNotificationTypeBadge) categories:nil]];
                [self refreshData];
            } else {
                [User throwUnableToLogin];
            }
        }];
        
    } else {
        self.path = [APIClient messagesUrl];
        [self refreshData];
    }
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"profile_icon"] style:UIBarButtonItemStylePlain target:self action:@selector(composePressed)];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"settings_icon"] style:UIBarButtonItemStylePlain target:self action:@selector(composePressed)];
}

- (void) composePressed {
    
}

- (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 {
    return self.messages.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:@"messageCell" forIndexPath:indexPath];
    Message *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) {
            [cell setNeedsUpdateConstraints];
            [cell updateConstraintsIfNeeded];
        }];
    } else {
        cell.attach.image = nil;
    }
    
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([self.path isEqualToString:[APIClient threadUrl]])
        return;
    Message *msg = [self.messages objectAtIndex:indexPath.row];
    ThreadViewController *threadViewController = [[ThreadViewController alloc] init];
    [threadViewController setPath:[APIClient threadUrl]];
    [threadViewController setParams:[NSMutableDictionary dictionaryWithObjectsAndKeys:msg.mid, @"mid", nil]];
    [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) {
        Message *lastMsg = [self.messages lastObject];
        if (lastMsg != nil) {
            NSNumber *lastMid = lastMsg.mid;
            if (![self.path isEqualToString:[APIClient threadUrl]]) {
                [self.params setObject:lastMid forKey:@"before_mid"];
            }
            [self refreshData];
        }
    }
}

@end