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//
//  FeedViewController.swift
//  lookThePart
//
//  Created by Latheeshwarraj Mohanraj on 4/30/20.
//  Copyright © 2020 Look The Part. All rights reserved.
//

import UIKit
import Alamofire
import MBProgressHUD
class FeedViewController: UIViewController {

    @IBOutlet var feedsCollectionView: UICollectionView!
    @IBOutlet var errorLabel: UILabel!
    @IBOutlet var errorPhoto: UIImageView!
    var posts:[PostShortDetail] = [] {
        didSet {
            self.feedsCollectionView.reloadData()
        }
    }

    var totalPages: Int = .zero
    var currentPages: Int = .zero
    var isPaginating: Bool = false {
        didSet {
            feedsCollectionView.reloadData()
        }
    }

    var resetToTop = false

    override func viewDidLoad() {
        super.viewDidLoad()
        setCustomStyles()
        self.setupCollectionView()
        loadPosts(fetchPageNo: 1, pagination: true)
        setCustomStyles()
        hideNavbarBorder()
        updateDailyVisitApi()

        let refreshControl = UIRefreshControl()
        refreshControl.addTarget(self, action: #selector(doSomething), for: .valueChanged)

            // this is the replacement of implementing: "collectionView.addSubview(refreshControl)"
        feedsCollectionView.refreshControl = refreshControl
    }

        @objc func doSomething(refreshControl: UIRefreshControl) {
            self.posts = []
            self.currentPages = 1
            self.isPaginating = false
            loadPosts(fetchPageNo: 1, pagination: true)
            // somewhere in your code you might need to call:
            refreshControl.endRefreshing()     //At some point you could end refreshing.
        }


    func updateDailyVisitApi(){
        let endpoint = EndPoints.activeUser + "?id=\(Defaults().getLoginCredentials()?.username ?? Constants.emptyString)"
        LTPAPIs.shared.request(endpoint).response { response in
            if response.response!.statusCode == 200 {
                // User daily visit registered
            } else {
                 // User daily visit registered failed
            }
        }
    }
    @objc func characterImageTapped(tapGestureRecognizer: CustomTapGesture){
        print("Character image tap")
        let vc = self.storyboard!.instantiateViewController(withIdentifier: "CharacterViewController") as! CharacterViewController
        vc.entertainmentName = tapGestureRecognizer.entertainmentName
        vc.entertainmentId = tapGestureRecognizer.entertainmentId
        vc.characterId = tapGestureRecognizer.characterId
        self.navigationController?.pushViewController(vc, animated: true)
//        let vc = self.storyboard!.instantiateViewController(withIdentifier: "TrendingProductsController") as! TrendingProductsController
//        self.navigationController?.pushViewController(vc, animated: true)
    }

    @objc func characterNameTapped(tapGestureRecognizer: CustomTapGesture){
        print("Character name tap")
        let vc = self.storyboard!.instantiateViewController(withIdentifier: "CharacterViewController") as! CharacterViewController
        vc.entertainmentName = tapGestureRecognizer.entertainmentName
        vc.entertainmentId = tapGestureRecognizer.entertainmentId
        vc.characterId = tapGestureRecognizer.characterId
        self.navigationController?.pushViewController(vc, animated: true)
//        let vc = self.storyboard!.instantiateViewController(withIdentifier: "TrendingProductsController") as! TrendingProductsController
//        self.navigationController?.pushViewController(vc, animated: true)
    }

    @objc func postTapped(tapGestureRecognizer: CustomTapGesture){
        print(" post tap")
        let vc = self.storyboard!.instantiateViewController(withIdentifier: "PostDetailViewController") as! PostDetailViewController
        let post = tapGestureRecognizer.post!
        vc.postId = String(post.postID)
        vc.characterTitle = post.characterName ?? ""
        vc.characterId = String(post.characterID ?? 0)
        vc.entertainmentId = tapGestureRecognizer.entertainmentId
        vc.characterThubmnailUrl = post.characterThumbnail ?? ""
        self.navigationController?.pushViewController(vc, animated: true)
//        let vc = self.storyboard!.instantiateViewController(withIdentifier: "TrendingProductsController") as! TrendingProductsController
//        self.navigationController?.pushViewController(vc, animated: true)
    }

    var isLoading = false
    func loadPosts(fetchPageNo page: Int, pagination: Bool = false) {
        if isLoading { return }
        isLoading = true
        if pagination {
            self.isPaginating = true
            self.feedsCollectionView.reloadData()
        }
        let fullEndPoint = "\(EndPoints.getFeaturedPosts)?page=\(page)"
        LTPAPIs.shared.request(fullEndPoint, isLTPEndpoint: true, method: .get, encoding: URLEncoding.default).responseDecodable(of: CustomPosts.self) { response in
            switch response.result {
            case let .success(data):
                self.currentPages = data.currentPage ?? .zero
                self.totalPages = data.totalPages ?? .zero
                self.posts += data.data ?? []
                print("This is chandan gaurav")
//                dump(data)
                if self.posts.count > 0 {
                    self.errorLabel.isHidden = true
                    self.errorPhoto.isHidden = true
                } else {
                    self.errorLabel.isHidden = false
                    self.errorPhoto.isHidden = false
                }
                self.setupCollectionView()
                if pagination {
                    self.isPaginating = false
                    self.feedsCollectionView.reloadData()
                }
                self.isLoading = false
            case let .failure(error):
                self.isLoading = false
                Helper.showAlert(viewController: self, title: "Oops", message: "Unexpected Error")
            }
        }
    }

    func setupCollectionView(){
        feedsCollectionView.delegate = self
        feedsCollectionView.dataSource = self
        feedsCollectionView.register(UINib(nibName: "FeedCollectionViewCell", bundle: .main), forCellWithReuseIdentifier: "FeedCollectionViewCell")
        feedsCollectionView.register(IndicatorFooter.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: IndicatorFooter.id)
    }

    func setCustomStyles(){
        let title = NSMutableAttributedString(string: "Look the Part")
        title.addAttribute(
            .font,
            value: UIFont(name: "Didot-Italic", size: 26)!,
            range: NSRange(location: 0, length: 4))
        title.addAttribute(
            .font,
            value: UIFont(name: "Didot-Italic", size: 20)!,
            range: NSRange(location: 5, length: 3))
        title.addAttribute(
            .font,
            value: UIFont(name: "Didot-Italic", size: 26)!,
            range: NSRange(location: 9, length: 4))
        //navigationItem.title = title
        let titleLbl = UILabel()
//
//        let attributes: [NSAttributedString.Key: Any] = [NSAttributedStringKey.font: UIFont(name: "Noteworthy-Bold", size: 30)!, NSAttributedStringKey.foregroundColor: titleLblColor]

        titleLbl.attributedText = title
        titleLbl.sizeToFit()
        self.navigationItem.titleView = titleLbl
        navigationController?.navigationBar.tintColor = UIColor.black
       // navigationController?.navigationBar.titleTextAttributes =
//        [NSAttributedString.Key.foregroundColor: UIColor.black,
//         NSAttributedString.Key.font: UIFont(name: "Didot-Italic", size: 24)!]
        navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
    }
}

extension FeedViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        print("I HAVE \(posts.count) Posts")
        return posts.count
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "FeedCollectionViewCell", for: indexPath) as! FeedCollectionViewCell
        let width = (collectionView.bounds.width)
        print("CHARACTER THUMBNAIL = \(String(describing: posts[indexPath.row].characterThumbnail?.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed))) COUNT: \(indexPath.row)")
        cell.viewHeight.constant = (width*1.25)+60
        cell.viewWidth.constant = (collectionView.bounds.width)
        cell.characterName.text = posts[indexPath.row].characterName
        cell.tvShow.text = posts[indexPath.row].entertainmentName ?? ""
        cell.characterThumbnail.sd_setImage(with: URL(string: posts[indexPath.row].characterThumbnail?.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? ""), placeholderImage: UIImage(named: "missing_circle"))
        //cell.postImage.sd_setImage(with: URL(string: posts[indexPath.row].postThumbnailCropped?.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? posts[indexPath.row].postThumbnail.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!), placeholderImage: UIImage(named: "missing_vertical"))
        cell.progressBar.startAnimating()
        cell.progressBar.isHidden = true
        cell.postImage.sd_setImage(with: URL(string: posts[indexPath.row].postThumbnailCropped?.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? posts[indexPath.row].postThumbnail.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!), placeholderImage: UIImage(named: "missing_vertical"), completed: { (image, error, cacheType, imageURL) in

            cell.progressBar.stopAnimating()
            cell.progressBar.isHidden = true
        })
        //progressBar
        cell.characterThumbnail.layer.masksToBounds = true
        cell.characterThumbnail.layer.cornerRadius = cell.characterThumbnail.bounds.width / 2

        let profileNameTap = CustomTapGesture(target: self, action:
            #selector(characterImageTapped(tapGestureRecognizer:)))
        profileNameTap.characterId = String(posts[indexPath.row].characterID ?? 0)
        profileNameTap.entertainmentId = String(describing: posts[indexPath.row].entertainmentID)
        cell.profileButton.isUserInteractionEnabled = true
        cell.profileButton.addGestureRecognizer(profileNameTap)

        let characterImageTap = CustomTapGesture(target: self, action:
            #selector(characterImageTapped(tapGestureRecognizer:)))
        characterImageTap.characterId = String(posts[indexPath.row].characterID ?? 0)
        characterImageTap.entertainmentName = posts[indexPath.row].entertainmentName ?? ""
        characterImageTap.entertainmentId = String(describing: posts[indexPath.row].entertainmentID)
        cell.characterThumbnail.isUserInteractionEnabled = true
        cell.characterThumbnail.addGestureRecognizer(characterImageTap)

        let characterNameTap = CustomTapGesture(target: self, action: #selector(characterNameTapped(tapGestureRecognizer:)))
        characterImageTap.entertainmentName = posts[indexPath.row].entertainmentName ?? ""
        characterNameTap.characterId = String(posts[indexPath.row].characterID ?? 0)
        characterNameTap.entertainmentId = String(describing: posts[indexPath.row].entertainmentID)
        cell.characterName.isUserInteractionEnabled = true
        cell.characterName.addGestureRecognizer(characterNameTap)

        let postTap = CustomTapGesture(target: self, action: #selector(postTapped(tapGestureRecognizer:)))
        postTap.post = posts[indexPath.row]
        postTap.entertainmentId = String(describing: posts[indexPath.row].entertainmentID)
        cell.postImage.isUserInteractionEnabled = true
        cell.postImage.addGestureRecognizer(postTap)


        return cell
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
           let width = (collectionView.bounds.width)
           return CGSize(width: width, height: (width*1.25)+60)
       }

    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
//        let vc = self.storyboard!.instantiateViewController(withIdentifier: "PostDetailViewController") as! PostDetailViewController
//        let post = posts[indexPath.row]
//        vc.postId = String(post.postID)
//        vc.characterTitle = post.characterName ?? ""
//        vc.characterId = String(post.characterID ?? 0)
//        vc.characterThubmnailUrl = post.characterThumbnail ?? ""
//        self.navigationController?.pushViewController(vc, animated: true)
    }
    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        if kind == UICollectionView.elementKindSectionFooter {
            let footer = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: IndicatorFooter.id, for: indexPath) as! IndicatorFooter
            return footer
        }
        return UICollectionReusableView()
    }
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize {
        return isPaginating ? .init(width: collectionView.bounds.width, height: 90) : .zero
    }
}

extension FeedViewController: UIScrollViewDelegate {
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        let position = scrollView.contentOffset.y
        if position > feedsCollectionView.contentSize.height - 100 - scrollView.frame.size.height {
            if self.isPaginating { return }
            if self.totalPages == self.currentPages { return }
            currentPages = currentPages + 1
            self.loadPosts(fetchPageNo: currentPages, pagination: true)
        }
    }
}

class CustomTapGesture: UITapGestureRecognizer {
    var characterId = String()
    var entertainmentName = String()
    var entertainmentId = String()
    var postId = String()
    var post: PostShortDetail? = nil
}