//
//  MessageCell.m
//  Juick
//
//  Created by Vitaly Takmazov on 03/12/2017.
//  Copyright © 2017 com.juick. All rights reserved.
//

#import "MessageCell.h"
#import "ColorScheme.h"
#import "APIClient.h"
#import "Entity.h"

@implementation MessageCell

- (void)awakeFromNib {
    [super awakeFromNib];
    self.text.textColor = [ColorScheme textColor];
    self.text.dataDetectorTypes = UIDataDetectorTypeAll;
    self.text.tintColor = [ColorScheme linkColor];
    self.title.textColor = [ColorScheme linkColor];
    self.timestamp.textColor = [UIColor grayColor];
    self.summary.textColor = [UIColor grayColor];
    self.tags.textFont = [UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
    UIGestureRecognizer *avatarTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(avatarClicked:)];
    [avatarTapRecognizer setEnabled:YES];
    [self.avatar addGestureRecognizer:avatarTapRecognizer];
    [self.avatar setUserInteractionEnabled:YES];
}

- (void) configureWithMessage:(Message *)msg {
    self.message = msg;
    self.avatar.image = nil;
    __weak UIImageView *weakAvatar = self.avatar;
    [self.avatar setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:msg.user.avatar]] placeholderImage:nil success:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, UIImage * _Nonnull image) {
        [UIView transitionWithView:weakAvatar
                          duration:0.3
                           options:UIViewAnimationOptionTransitionCrossDissolve
                        animations:^{
                            weakAvatar.image = image;
                        }
                        completion:nil];
    } failure:nil];
    if ([msg.attach length] > 0) {
        CGFloat imageHeight = [msg.attachment.small.height floatValue] / [[UIScreen mainScreen] scale];
        self.attachmentHeight.constant = imageHeight;
        __weak UIImageView *weakAttach = self.attach;
        [self.attach setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:msg.attach]] placeholderImage:nil success:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, UIImage * _Nonnull image) {
            [UIView transitionWithView:weakAttach
                              duration:0.3
                               options:UIViewAnimationOptionTransitionCrossDissolve
                            animations:^{
                                weakAttach.image = image;
                            }
                            completion:nil];
        } failure:nil];
    } else {
        self.attachmentHeight.constant = 0;
        self.attach.image = nil;
    }
    self.title.text = msg.user.uname;
    
    self.timestamp.text = [[[APIClient sharedClient].dateFormatter dateFromString:msg.timestamp] timeAgoSinceNow];
    NSUInteger count = [msg.repliesCount unsignedIntegerValue];
    if (count > 0) {
        if ([msg.repliesBy length] > 0) {
            self.summary.text = [NSString stringWithFormat:@"%@ replies by %@", msg.repliesCount, msg.repliesBy];
        } else {
            self.summary.text = [NSString stringWithFormat:@"%@ replies", msg.repliesCount];
        }
    } else {
        self.summary.text = nil;
    }
    self.text.attributedText = nil;
    if (msg.text) {
        NSMutableAttributedString *txt = [[NSMutableAttributedString alloc]
                                          initWithString:msg.text
                                          attributes:@{NSFontAttributeName:[UIFont preferredFontForTextStyle:UIFontTextStyleBody]}];
        [txt beginEditing];
        for (NSDictionary *entity in msg.entities) {
            NSUInteger start = [entity[@"start"] unsignedIntegerValue];
            NSUInteger end = [entity[@"end"] unsignedIntegerValue];
            NSString *text = entity[@"text"] ? entity[@"text"] : @"";
            NSRange currentRange = NSMakeRange(start, end - start);
            [txt addAttribute:@"displayText" value:text range:currentRange];
            if ([entity[@"type"] isEqualToString:@"a"]) {
                [txt addAttribute:NSLinkAttributeName value:entity[@"url"] range:currentRange];
            }
            if ([entity[@"type"] isEqualToString:@"q"]) {
                [txt addAttribute:NSForegroundColorAttributeName value:[UIColor darkGrayColor] range:currentRange];
                NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
                paragraphStyle.firstLineHeadIndent = 12.0f;
                paragraphStyle.headIndent = 12.0f;
                paragraphStyle.paragraphSpacing = 12.0f;
                [txt addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:currentRange];
            }
            if ([entity[@"type"] isEqualToString:@"u"]) {
                [txt addAttribute:NSUnderlineStyleAttributeName value:@(NSUnderlineStyleSingle) range:currentRange];
            }
            UIFontDescriptor* fontDescriptor = [UIFontDescriptor
                                                preferredFontDescriptorWithTextStyle:UIFontTextStyleBody];
            if ([entity[@"type"] isEqualToString:@"b"]) {
                UIFontDescriptor* boldFontDescriptor = [fontDescriptor
                                                        fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold];
                UIFont* boldFont =  [UIFont fontWithDescriptor:boldFontDescriptor size: 0.0];
                [txt addAttribute:NSFontAttributeName value:boldFont range:currentRange];
            }
            if ([entity[@"type"] isEqualToString:@"i"]) {
                UIFontDescriptor* italicFontDescriptor = [fontDescriptor
                                                        fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitItalic];
                UIFont* italicFont =  [UIFont fontWithDescriptor:italicFontDescriptor size: 0.0];
                [txt addAttribute:NSFontAttributeName value:italicFont range:currentRange];
            }
        }
        [txt enumerateAttribute:@"displayText" inRange:NSMakeRange(0, [txt length]) options:0 usingBlock:^(id  _Nullable value, NSRange range, BOOL * _Nonnull stop) {
            if (value) {
                [txt replaceCharactersInRange:range withString:value];
            }
        }];
        [txt endEditing];
        self.text.attributedText = txt;
    }
    [self.tags removeAllTags];
    if ([msg.tags count] > 0) {
        [msg.tags enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
            [self.tags addTag:obj];
        }];
    }
}

-(void) avatarClicked:(UIGestureRecognizer *)gestureRecognizer {
    [self.delegate avatarClicked:self.title.text];
}

@end