//
//  FeaturedProfileCollectionViewCell.swift
//  Tusker
//
//  Created by Shadowfacts on 2/6/21.
//  Copyright © 2021 Shadowfacts. All rights reserved.
//

import UIKit
import Pachyderm

class FeaturedProfileCollectionViewCell: UICollectionViewCell {

    @IBOutlet weak var headerImageView: UIImageView!
    @IBOutlet weak var avatarContainerView: UIView!
    @IBOutlet weak var avatarImageView: UIImageView!
    @IBOutlet weak var displayNameLabel: EmojiLabel!
    @IBOutlet weak var noteTextView: StatusContentTextView!
    
    var account: Account?
    
    private var avatarRequest: ImageCache.Request?
    private var headerRequest: ImageCache.Request?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        avatarContainerView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarContainerView)
        avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
        
        noteTextView.defaultFont = .systemFont(ofSize: 16)
        noteTextView.textContainer.lineBreakMode = .byTruncatingTail
        
        NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
    }
    
    func updateUI(account: Account) {
        self.account = account
        
        displayNameLabel.updateForAccountDisplayName(account: account)
        
        noteTextView.setTextFromHtml(account.note)
        noteTextView.setEmojis(account.emojis)
        
        avatarImageView.image = nil
        avatarRequest = ImageCache.avatars.get(account.avatar) { [weak self] (_, image) in
            defer {
                self?.avatarRequest = nil
            }
            guard let self = self,
                  let image = image,
                  self.account?.id == account.id else {
                return
            }
            DispatchQueue.main.async {
                self.avatarImageView.image = image
            }
        }
        
        headerImageView.image = nil
        if let header = account.header {
            headerRequest = ImageCache.headers.get(header) { [weak self] (_, image) in
                defer {
                    self?.headerRequest = nil
                }
                guard let self = self,
                      let image = image,
                      self.account?.id == account.id else {
                    return
                }
                DispatchQueue.main.async {
                    self.headerImageView.image = image
                }
            }
        }
    }
    
    @objc private func preferencesChanged() {
        avatarContainerView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarContainerView)
        avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
        
        if let account = account {
            displayNameLabel.updateForAccountDisplayName(account: account)
        }
    }

}