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//
// ChatViewController.m
// Juick
//
// Created by Vitaly Takmazov on 04/03/2018.
// Copyright © 2018 com.juick. All rights reserved.
//
#import "ChatViewController.h"
#define kMessageInputInitialHeight 50
@interface ChatViewController ()
@property (nonatomic, readwrite, retain) MessageInputView *accessoryView;
@property (nonatomic, strong) NSString *me;
@end
@implementation ChatViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self.navigationController.visibleViewController setTitle:self.uname];
self.tableView.delegate = self;
self.tableView.dataSource = self;
[self.tableView registerNib:[UINib nibWithNibName:@"BubbleMessageCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:@"bubbleMessageCell"];
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
self.tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
self.tableView.allowsSelection = NO;
self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
[self reloadChat];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
[self addObserver:self forKeyPath:@"uname" options:0 context:nil];
#if TARGET_OS_MACCATALYST
[self.stack addArrangedSubview:[self inputAccessoryView]];
#else
self.tableView.refreshControl = [UIRefreshControl new];
[self.tableView.refreshControl addTarget:self action:@selector(reloadChat) forControlEvents:UIControlEventValueChanged];
self.stackBottomConstraint.constant = kMessageInputInitialHeight;
#endif
}
-(void) reloadChat {
self.messages = [NSMutableArray array];
[self.tableView reloadData];
[[AppDelegate shared].api fetchChatWithUser:self.uname callback:^(NSArray *messages, NSError *err) {
if (err == nil) {
[self.messages addObjectsFromArray:[[messages reverseObjectEnumerator] allObjects]];
NSMutableArray *indexPaths = [NSMutableArray new];
NSInteger messagesCount = [self.messages count];
for (NSUInteger index = 0; index < messagesCount; index++) {
[indexPaths addObject:[NSIndexPath indexPathForRow:index inSection: 0]];
}
if (indexPaths > 0) {
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:YES];
[self.tableView endUpdates];
}
if (messagesCount > 0) {
[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:[self.messages count]-1 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:NO];
}
}
[self.tableView.refreshControl endRefreshing];
}];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.messages count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
BubbleMessageCell *cell = [tableView dequeueReusableCellWithIdentifier:@"bubbleMessageCell" forIndexPath:indexPath];
Message *message = [self.messages objectAtIndex:indexPath.row];
[cell configureWithMessage:message isMe:[self.me isEqualToString:message.user.uname]];
return cell;
}
-(BOOL) canBecomeFirstResponder {
return YES;
}
- (BOOL)canResignFirstResponder {
return YES;
}
- (UIView *) inputAccessoryView {
if (!_accessoryView) {
_accessoryView = [[[NSBundle mainBundle] loadNibNamed:@"MessageInputView" owner:self options:nil] firstObject];
_accessoryView.delegate = self;
}
return _accessoryView;
}
-(void) keyboardWillChangeFrame:(NSNotification *)notification {
NSDictionary *userInfo = [notification userInfo];
if (userInfo) {
CGRect beginFrame = [userInfo [UIKeyboardFrameBeginUserInfoKey] CGRectValue];
CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
CGFloat keyboardHeight = endFrame.origin.y - beginFrame.origin.y;
CGFloat duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];
UIViewAnimationCurve animationCurve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
[UIView animateWithDuration:duration delay:0 options:(animationCurve << 16) animations:^{
self.tableView.contentOffset = CGPointMake(0, self.tableView.contentOffset.y - keyboardHeight);
} completion:nil];
}
}
-(void) textSent:(NSString *)text {
[[AppDelegate shared].api postPMToUser:self.uname text:text result:^(NSError *err) {
if (!err) {
NSLog(@"Success!");
[self.accessoryView becomeFirstResponder];
[self reloadChat];
}
}];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
[self reloadChat];
}
@end
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