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//
// MessageCell.swift
// Juick
//
// Created by Vitaly Takmazov on 13.05.2023.
// Copyright © 2023 com.juick. All rights reserved.
//
import UIKit
@objc protocol MessageCellDelegate {
@objc func avatarClicked(_ uname: String)
@objc func linkClicked(_ url: String)
}
@objc
class MessageCell: UITableViewCell, UITextViewDelegate {
@IBOutlet weak var avatar: UIImageView!
@IBOutlet weak var message: UITextView!
@IBOutlet weak var title: UILabel!
@IBOutlet weak var timestamp: UILabel!
@IBOutlet weak var attach: UIImageView!
@IBOutlet weak var attachmentHeight: NSLayoutConstraint!
@IBOutlet weak var attachmentWidth: NSLayoutConstraint!
@IBOutlet weak var summary: UILabel!
@objc var delegate: MessageCellDelegate?
var _quoteStyle: NSMutableParagraphStyle?
var _boldFont: UIFont?
var _italicFont: UIFont?
var attachment: String?
@objc
func configure(msg: Message, selectable: Bool) {
updateAvatar(url: msg.user.avatar)
if (msg.user.uid == nil) {
AppDelegate.shared().api.getUserByUri(msg.user.uri) { user in
self.title.text = user?.uname
if let url = user?.avatar ?? API.defaultAvatarUrl() {
self.updateAvatar(url: url)
}
}
}
if (msg.attach != nil) {
self.attachment = msg.attachment.url
let imageHeight = msg.attachment.medium.height as! CGFloat / UIScreen.main.scale
let imageWidth = msg.attachment.medium.width as! CGFloat / UIScreen.main.scale
self.attach.image = UIImage.placeholderImage(with: UIColor(named: "Muted"), size: CGSizeMake(imageWidth, imageHeight))
self.attachmentHeight.constant = imageHeight
self.attachmentWidth.constant = imageWidth
AppDelegate.shared().api.fetchImage(with: URL(string: msg.attachment.medium.url)) { data in
if let imageData = data {
UIView.transition(with: self.attach, duration: 0.3, options: .transitionCrossDissolve, animations: {
self.attach.image = UIImage(data: imageData)
})
}
}
let attachmentTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(linkClicked(_:)))
attachmentTapGestureRecognizer.isEnabled = true
self.attach.addGestureRecognizer(attachmentTapGestureRecognizer)
self.attach.isUserInteractionEnabled = true
} else {
self.attachmentHeight.constant = 0
self.attach.image = nil
}
if (msg.user.premium) {
self.title.text = "\(msg.user.uname!) ☆"
} else {
self.title.text = msg.user.uname!
}
self.timestamp.text = (AppDelegate.shared().sharedDateFormatter.date(from: msg.timestamp)! as NSDate).timeAgo()
let count = msg.repliesCount?.uintValue ?? 0
if (count > 0) {
if (msg.repliesBy != nil) {
self.summary.text = "\(msg.repliesCount!) replies by \(msg.repliesBy!)"
} else {
self.summary.text = "\(msg.repliesCount!) replies"
}
} else {
self.summary.text = nil
}
if (msg.unread) {
self.summary.text = "\(unreadMarker) \(self.summary.text!)"
self.summary.textColor = UIColor(named: "Funny")
} else {
self.summary.textColor = UIColor(named: "Muted")
}
self.message.attributedText = nil
if (msg.text != nil) {
self.message.delegate = self
self.message.isHidden = false
self.message.isSelectable = selectable
self.message.isUserInteractionEnabled = selectable
let txt = NSMutableAttributedString(string: msg.text, attributes: [
NSAttributedString.Key.font: UIFont.preferredFont(forTextStyle: .body),
NSAttributedString.Key.foregroundColor: UIColor(named: "Text")!
])
txt.beginEditing()
for entity in msg.entities {
let start = entity.start?.intValue ?? 0
let end = entity.end?.intValue ?? 0
let text = entity.text ?? ""
let currentRange = NSMakeRange(start, end - start)
txt.addAttribute(NSAttributedString.Key(rawValue: "displayText"), value: text, range: currentRange)
if entity.type == "a" {
txt.addAttribute(NSAttributedString.Key.link, value:entity.link!, range:currentRange)
}
if entity.type == "q" {
txt.addAttribute(NSAttributedString.Key.foregroundColor, value:UIColor(named: "Muted")!, range:currentRange)
txt.addAttribute(NSAttributedString.Key.paragraphStyle, value:_quoteStyle!, range:currentRange)
}
if entity.type == "u" {
txt.addAttribute(NSAttributedString.Key.underlineStyle, value:NSUnderlineStyle.single, range:currentRange)
}
if entity.type == "b" {
txt.addAttribute(NSAttributedString.Key.font, value:_boldFont!, range:currentRange)
}
if entity.type == "i" {
txt.addAttribute(NSAttributedString.Key.font, value:_italicFont!, range:currentRange)
}
}
txt.enumerateAttribute(NSAttributedString.Key(rawValue: "displayText"), in: NSMakeRange(0, txt.length)) { value, range, stop in
if let text = value as? String {
txt.replaceCharacters(in: range, with:text)
}
}
if msg.tags != nil {
let tagsList = "\(msg.tags.joined(separator: ", "))\n"
txt.insert(NSAttributedString(string: tagsList, attributes: [
NSAttributedString.Key.font: _italicFont!,
NSAttributedString.Key.foregroundColor: UIColor(named: "Muted")!
]), at: 0)
}
txt.endEditing()
self.message.attributedText = txt
} else {
self.message.isHidden = true
}
}
let unreadMarker = "●"
func updateAvatar(url: String) {
self.avatar.image = nil
AppDelegate.shared().api.fetchImage(with: URL(string: url)) { data in
if let imageData = data {
UIView.transition(with: self.avatar, duration: 0.3, options: .transitionCrossDissolve, animations: {
self.avatar.image = UIImage(data: imageData)
})
}
}
}
@objc func avatarClicked(_ sender: UITapGestureRecognizer) {
if let name = self.title.text {
self.delegate?.avatarClicked(name)
}
}
func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
self.delegate?.linkClicked(URL.absoluteString)
return false
}
@objc func linkClicked(_ sender: UITapGestureRecognizer){
self.delegate?.linkClicked(self.attachment!)
}
override func awakeFromNib() {
let avatarTapRecognizer = UITapGestureRecognizer(target: self, action: #selector(avatarClicked(_:)))
avatarTapRecognizer.isEnabled = true
self.avatar.addGestureRecognizer(avatarTapRecognizer)
self.avatar.isUserInteractionEnabled = true
_quoteStyle = NSParagraphStyle.default.mutableCopy() as? NSMutableParagraphStyle
_quoteStyle?.firstLineHeadIndent = 12.0
_quoteStyle?.headIndent = 12.0
_quoteStyle?.paragraphSpacing = 6.0
let fontDescriptor = UIFontDescriptor.preferredFontDescriptor(withTextStyle: .body)
guard let boldFontDescriptor = fontDescriptor.withSymbolicTraits(.traitBold) else { fatalError("Font error") }
_boldFont = UIFont(descriptor: boldFontDescriptor, size: 0.0)
guard let italicFontDescriptor = fontDescriptor.withSymbolicTraits(.traitItalic) else { fatalError("Font error") }
_italicFont = UIFont(descriptor: italicFontDescriptor, size: 0.0)
}
}
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