gistfile1.txt

//
//  MediaTableViewCell.swift
//  myStreet.com
//
//  Created by Bogdan Barbulescu on 12/04/2018.
//  Copyright © 2018 vividapartments. All rights reserved.
//

import UIKit
import SAMCache


protocol MediaTableViewCellDelegate: class {
    func commentButtonDidTap(media: Media)
    func viewAllComments(media: Media)
    func moreOptionsTapped(cell: MediaTableViewCell, mediaObject: Media)
    
    func mediaTableViewCell(cell: MediaTableViewCell, didClickProfileImage: Bool)
    func mediaTableViewCell(cell: MediaTableViewCell, didClickProfileName: Bool)
    
   
}

//protocol MediaTableViewCellHeaderDelegate: class {
//     func moreOptionsTapped(cell: MediaHeaderCell)
//}



class MediaTableViewCell: UITableViewCell {

    
    weak var delegate: MediaTableViewCellDelegate?
    

   
    
//    @IBOutlet weak var captionLabel: UILabel! // The text that user wrote in the post
    
    @IBOutlet weak var captionLabel: UITextView!
    
    @IBOutlet weak var createdAtLabel: UILabel!
    @IBOutlet weak var likeButton: UIButton!
    @IBOutlet weak var commenButton: UIButton!
    @IBOutlet weak var shareButton: UIButton!
    @IBOutlet weak var numberOfLikesButton: UIButton!
    @IBOutlet weak var viewAllCommentsButton: UIButton!
    @IBOutlet weak var moreOptionsButton: UIButton!
    
    //managing header looking top part of the cell
    
    @IBOutlet weak var mediaImageView: UIImageView!
    @IBOutlet weak var profileImageView: UIImageView!
    @IBOutlet weak var fullNameButton: UIButton!
//    @IBOutlet weak var followButton: UIButton!

    
   //if this is true, it means that the request to populate this cell with data comes from NewsFeedTableViewController
    // The reason why we do this check is because we don't want to delete MediaHeaderCell in other ViewControllers, such as MediaDetailTableViewController and ProfileViewController because they already contain MediaHeaderCell
    var isNewsFeed: Bool = false
    
    //initialized after the image is downloaded and it is used in NewsfeedVC. When the post needs to be edited, we access this property from  NewsfeedVC and pass it to EditPostViewController, thus it will contain the downloaded image too
    var mediaObject: Media!
    
    
    var currentUser: UserModel!
    var comments = [Comment]()
    var media: Media! {
        
        didSet {
            if currentUser != nil {
                self.updateUI()
                
                removeAllObserversInCell()
                
                if isNewsFeed == true {
                     self.updateUIForHeader()
                }
               
            }else{
               printsNow(message: "currentUser is nil")
            }
        }
    }
  

    
    override func awakeFromNib() {
        super.awakeFromNib()
         initialize()
    }
    
    
    private func initialize() {
        let imageTapGesture = UITapGestureRecognizer(target: self, action: #selector(profileImageTapped))
        profileImageView.addGestureRecognizer(imageTapGesture)
        // imageviews by default aren't interactable
        profileImageView.isUserInteractionEnabled = true

        fullNameButton.addTarget(self, action: #selector(profileButtonTapped), for: .touchUpInside)
    }

  
    @objc private func profileImageTapped() {
        delegate?.mediaTableViewCell(cell: self, didClickProfileImage: true)
    }

    @objc private func profileButtonTapped() {
       delegate?.mediaTableViewCell(cell: self, didClickProfileName: true)

    }

    
    
    func removeAllObserversInCell() {
        
//        //remove likes observers
//        DDatabaseRReference.media.reference().child("\(media.mediaUID)/likes").removeAllObservers()
//        
//        //remove comments observers
//        DDatabaseRReference.media.reference().child("\(media.mediaUID)/comments").removeAllObservers()
    }
    
    
    override func prepareForReuse() {
        super.prepareForReuse()
//        removeAllObserversInCell()
    }

    
    func updateUI() {
        

         captionLabel.text = media.caption
  
        self.mediaImageView.image = nil
        let mediaImageKey = "\(media.mediaUID)-mediaImage"

        if let image = SAMCache.shared().object(forKey: mediaImageKey) as? UIImage {
            self.mediaObject = media
            self.mediaObject.mediaImage = image
            
            self.mediaImageView.image = image

        } else {
        
        //download image the from 'media' selected in cellForRowAt:
            // the reference of  picture is ~/StorageReference.images.reference().child(uid) -> uid is uid of media
            media.downloadMediaImage { [weak self] (image, error) in
                if image != nil {
                    self?.mediaImageView.image = image
                    SAMCache.shared().setObject(image, forKey: mediaImageKey)
                }
                self?.mediaImageView.image = image ?? UIImage(named: "icon-defaultAvatar")
                self?.mediaObject = self?.media
                self?.mediaObject.mediaImage = image
                
//                self?.profileImageView.layer.cornerRadius = (self?.profileImageView.bounds.width)! / 2.0
//                self?.profileImageView.layer.masksToBounds = true
                
            
            }//end downloadMediaImage
        }//end of  else
        
        
        likeButton.setImage(UIImage(named: "icon-like"), for: [])
        
         assign(likesNumber: media.likes.count)
    
        if media.likes.contains(currentUser) {
            likeButton.setImage(UIImage(named: "icon-like-filled"), for: [])
        }
        
        
        if media.comments.count == 0 {
            viewAllCommentsButton.setTitle("Be the first to share a comment", for: [])
        } else {
            viewAllCommentsButton.setTitle("View all \(media.comments.count) comments", for: [])
        }
        
        let time = getTimeAsString(timeStamp: media.createdTime, timeFormat: "dd MMM yyyy HH:mm")
        self.createdAtLabel.text = "shared on \(time)"
//        self.captionLabel.numberOfLines = 0
        
        if !self.likeButton.isHidden {
            print("likeButton is not hidden in UpdateUI")
        }else {
            print("it is hidden")
        }
    }

    
    
    func assign(likesNumber: Int) {
        if likesNumber == 0 {
            numberOfLikesButton.setTitle("Be the first to like this!", for: [])
            likeButton.setImage(UIImage(named: "icon-like"), for: [])
        } else {
            numberOfLikesButton.setTitle("♥︎ \(media.likes.count) likes", for: [])
        }
    }

    @IBAction func likeDidTap() {
        
        if media.likes.contains(currentUser) {
            likeButton.setImage(UIImage(named: "icon-like"), for: [])
            //unlike the post
            media.unlikedBy(user: currentUser)
            
        } else {
            likeButton.setImage(UIImage(named: "icon-like-filled"), for: [])
            //like the post
            media.likedBy(user: currentUser)
        }
        
        //used when MediaDetail
//        media.observeNumberOfLikes { numberOfLikes in
//            self.assign(likesNumber: numberOfLikes)
//        }
    }
    
    @IBAction func commentDidTap() {
        delegate?.commentButtonDidTap(media: media)
    }
    
    
    @IBAction func shareDidTap (){
        
    }
    
    @IBAction func numberOfLikesDidTap() {
         delegate?.viewAllComments(media: media)
    }
    

    @IBAction func viewAllCommentsDidTap() {
        delegate?.viewAllComments(media: media)
    }
    

    
    @IBOutlet weak var moreOptionButton: UIButton!
    
    @IBAction func moreOptionsAction(_ sender: UIButton) {
        if mediaObject.mediaImage != nil {
            delegate?.moreOptionsTapped(cell: self, mediaObject: mediaObject)

        }else {
            printsNow(message: "no image in here")
        }
    }
    
//    @IBAction func followDidTap(_ sender: AnyObject) {
//        
//        currentUser.follow(user: media.createdBy)
//        media.createdBy.isFollowedBy(currentUser)
//        followButton.isHidden = true
//    }

    
}//end of cell class




extension MediaTableViewCell {
    
    func updateUIForHeader() {
        
        //update the upper part of the cell, we don't have headerForCell in NewsFeed
        
        profileImageView.image = #imageLiteral(resourceName: "icon-defaultAvatar")

        if let image = SAMCache.shared().object(forKey: "\(self.media.createdBy.userUID)-headerImage") as? UIImage {
            self.profileImageView.image = image
        } else {
            media.createdBy.downloadProfilePicture { [weak self] (image, error) in
                if let image = image {
                    self?.profileImageView.image = image
                          SAMCache.shared().setObject(image, forKey: "\(self?.media.createdBy.userUID)-headerImage")
                } else if error != nil {
                    print(error)
                }
            }
        }
        
   
        
        
        profileImageView.layer.cornerRadius = profileImageView.bounds.width / 2.0
        profileImageView.layer.masksToBounds = true
            let firstName = media.createdBy.firstName
            let lastName = media.createdBy.lastName
            let fullName = "\(firstName) \(lastName)"
        fullNameButton.setTitle(fullName, for: [])
        
//        followButton.layer.borderWidth = 1
//        followButton.layer.cornerRadius = 2.0
//        followButton.layer.borderColor = followButton.tintColor.cgColor
//        followButton.layer.masksToBounds = true
//        if currentUser.follows.contains(media.createdBy) || media.createdBy.userUID == currentUser.userUID {
//            followButton.isHidden = true
//        } else {
//            followButton.isHidden = false
//        }
        
        
//        if !self.likeButton.isHidden {
//            print("likeButton is not hidden in UpdateUIHEADER")
//        }else {
//            print("it is hidden")
//        }
    }
    
}//end of extension