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

#import "MessagesViewController.h"

#import "Message.h"

#import "NewPostViewController.h"
#import "LoginViewController.h"
#import "ThreadViewController.h"
#import "BlogViewController.h"
#import "User+UIView.h"
#import "API.h"

NSString* const messageCellIdentifier = @"messageCell";


@interface MessagesViewController()

@property(nonatomic, assign) Boolean initialDataLoaded;

-(void) applicationActivated;

@property NSString *selectedUser;

@end

@implementation MessagesViewController

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    self.navigationController.visibleViewController.title = self.title;
}

-(void) refreshData {
    UIApplicationState state = [UIApplication sharedApplication].applicationState;
    if (state == UIApplicationStateActive && self.dataLoading == NO) {
        if ([self.path length] > 0) {
            self.dataLoading = YES;
            if (self.messages.count == 0) {
                [self.tableView reloadData];
            }
            [[AppDelegate shared].api pullNextFromPath:self.path params:self.params callback:^(NSArray *next, NSError *err) {
                if (!self.initialDataLoaded) {
                    self.initialDataLoaded = YES;
                }
                self.dataLoading = NO;
                if (err) {
                    [User throwUnableToLogin:self sourceView:self.navigationItem.titleView error:err path:self.path params:self.params];
                    return;
                }
                NSArray *newMsgs = next;
                if ([self isAtTop:self.params]) {
                    if (![self.path isEqualToString:[API threadUrl]]) {
                        [self.messages removeAllObjects];
                        [self.tableView reloadData];
                    }
                }
                NSUInteger oldCount = [self.messages count];
                if ([self.path isEqualToString:[API threadUrl]]) {
                    NSUInteger lastRid = [((Message *)[self.messages lastObject]).rid unsignedIntegerValue] + 1;
                    NSUInteger count = [next count];
                    if (oldCount > 0) {
                        if (lastRid && lastRid < count) {
                            newMsgs = [next subarrayWithRange:NSMakeRange(lastRid, count - lastRid)];
                        } else {
                            [self.refreshControl endRefreshing];
                            return;
                        }
                    }
                }
                if (self.messages.count == 0) {
                    [self.tableView reloadData];
                }
                [self.messages addObjectsFromArray:newMsgs];
                NSMutableArray *indexPaths = [NSMutableArray new];
                for (NSUInteger index = oldCount; index <= oldCount + [newMsgs count] - 1; index++) {
                    [indexPaths addObject:[NSIndexPath indexPathForRow:index inSection: 0]];
                }
                [self.tableView beginUpdates];
                [self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:NO];
                [self.tableView endUpdates];
                [self.refreshControl endRefreshing];
                if (self.shouldScrollToUnreadOnRefresh) {
                    NSInteger messagesCount = [self.messages count];
                    if (messagesCount > 0) {
                        NSInteger itemToScroll = MIN([self.firstUnread integerValue], self.messages.count - 1);
                        NSIndexPath *lastRow = [NSIndexPath indexPathForRow:itemToScroll inSection:0];
                        [self.tableView scrollToRowAtIndexPath:lastRow atScrollPosition:UITableViewScrollPositionBottom animated:NO];
                    }
                    self.firstUnread = nil;
                }
            }];
        }
    }
}

-(void) refreshControlActivated {
    NSMutableDictionary *refreshedParams = [self.params mutableCopy];
    refreshedParams[@"before_mid"] = nil;
    refreshedParams[@"to"] = nil;
    self.params = refreshedParams;
    [self refreshData];
}

-(BOOL) isAtTop:(NSDictionary *)params {
    return [params objectForKey:@"before_mid"] == nil && [params objectForKey:@"to"] == nil;
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return UIStatusBarStyleLightContent;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.view setBackgroundColor:[UIColor colorNamed:@"Background"]];
    [self.tableView registerNib:[UINib nibWithNibName:@"MessageCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:messageCellIdentifier];
    [self.tableView registerNib:[UINib nibWithNibName:@"ContentLoadingCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:@"contentLoadingCell"];
    self.tableView.rowHeight = UITableViewAutomaticDimension;
    self.tableView.estimatedRowHeight = 500.0f;
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
#if !TARGET_OS_MACCATALYST
    self.refreshControl = [UIRefreshControl new];
    [self.refreshControl addTarget:self action:@selector(refreshControlActivated) forControlEvents:UIControlEventValueChanged];
#endif
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(newMessage:) name:NewMessageNotificationName object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationActivated) name:UIApplicationDidBecomeActiveNotification object:nil];
    [self refreshData];
}

- (void) composePressed {
    
}

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.dataLoading && self.messages.count == 0 ? 4 : self.messages.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    if ((self.dataLoading && self.messages.count == 0) || indexPath.row >= self.messages.count) {
        return [tableView dequeueReusableCellWithIdentifier:@"contentLoadingCell"];
    } else {
        Message *msg = [self.messages objectAtIndex:indexPath.row];
        MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:messageCellIdentifier forIndexPath:indexPath];
        [cell configureWithMsg:msg selectable:self.shouldAllowToSelectText];
        cell.delegate = self;
        return cell;
    }
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return self.dataLoading && self.messages.count == 0 ? 200.0f : [super tableView:tableView heightForRowAtIndexPath:indexPath];
}

-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    Message *msg = [self.messages objectAtIndex:indexPath.row];
    [self viewThreadForMessage:msg mid:msg.mid scrollTo:0];
    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    /*
    if ([segue.identifier isEqual: @"profileSegue"]) {
        BlogViewController *blogVC = (BlogViewController *)segue.destinationViewController;
        [blogVC setUname:self.selectedUser];
        [blogVC setTitle:self.selectedUser];
        blogVC.path = [NSString stringWithFormat:@"/messages?uname=%@", self.selectedUser];
        [blogVC setShouldScrollToBottomOnRefresh:NO];
    }*/
}

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView_ {
    CGFloat actualPosition = scrollView_.contentOffset.y;
    CGFloat contentHeight = scrollView_.contentSize.height - scrollView_.contentSize.height / 2;
    if (actualPosition >= contentHeight && !self.dataLoading && ![self.tableView isTracking]) {
        [_messagesDelegate loadMore];
    }
}

-(void) viewThreadForMessage:(Message *)msg mid:(NSNumber *)mid scrollTo:(NSNumber *)rid {
    [[AppDelegate shared] presentThread:self];
}

-(void) newMessage:(NSNotification *)obj {
    Message *msg = (Message *)[obj object];
    [self viewThreadForMessage:msg mid:msg.mid scrollTo:0];
}

- (void)applicationActivated {
    if (!self.initialDataLoaded) {
        [self refreshData];
    }
}

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
    Message *msg = [self.messages objectAtIndex:indexPath.row];
    UIContextualAction *moreAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:@"More" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
    }];
    moreAction.image = [UIImage systemImageNamed:@"ellipsis.circle"];
    UIContextualAction *likeAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:@"Recommend" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        [[AppDelegate shared].api likeMessageWithId:msg.mid callback:^(BOOL result) {
            completionHandler(YES);
        }];
    }];
    likeAction.backgroundColor = [UIColor colorNamed:@"Funny"];
    NSArray *actions = msg.rid == 0 ? @[likeAction, moreAction] : @[moreAction];
    UISwipeActionsConfiguration *configuration = [UISwipeActionsConfiguration configurationWithActions:actions];
    return configuration;
}

-(void)avatarClicked:(NSString *)uname {
    /*self.selectedUser = uname;
    [self performSegueWithIdentifier:@"profileSegue" sender:self];*/
}

- (void)safariViewControllerDidFinish:(SFSafariViewController *)controller {
    [self dismissViewControllerAnimated:YES completion:nil];
}

-(void)linkClicked:(NSString *)urlString {
    NSURL *url = [NSURL URLWithString:urlString];
    SFSafariViewControllerConfiguration *configuration = [[SFSafariViewControllerConfiguration alloc] init];
    configuration.entersReaderIfAvailable = NO;
    configuration.barCollapsingEnabled = YES;
    SFSafariViewController *safariViewController = [[SFSafariViewController alloc] initWithURL:url configuration:configuration];
    safariViewController.delegate = self;
    [self presentViewController:safariViewController animated:YES completion:nil];
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];
}

@end