//
//  WebSeriesVC.swift
//  WOKA
//
//  Created by MacBook Pro on 18/06/24.
//

import UIKit

class WebSeriesVC: UIViewController {

    @IBOutlet weak var headerView: ShimmerEffectView!
    @IBOutlet weak var masilaTrailerView: ShimmerEffectView!

    @IBOutlet weak var videoLanguageView: ShimmerEffectView!
    
    @IBOutlet weak var topLabel: UILabel!
    @IBOutlet weak var scrollView: UIScrollView!
    @IBOutlet weak var headerViewTopConstraint: NSLayoutConstraint!
    
    @IBOutlet weak var languageLabel: UILabel!
    @IBOutlet weak var languageStack: UIStackView!
    @IBOutlet weak var expandBtn: UIButton!
    
    @IBOutlet weak var headerHeight: NSLayoutConstraint!
    @IBOutlet weak var continueWatchingCV: UICollectionView!
    @IBOutlet weak var showListingTableView: UITableView!
    @IBOutlet weak var tableHeight: NSLayoutConstraint!
    
    @IBOutlet weak var continueWatchingStack: UIStackView!
    
    var vm = WebSeriesVM()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        vm.vc = self
        scrollView.delegate = self
        vm.initView()
        navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
        navigationController?.navigationBar.shadowImage = UIImage()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.setNavigationBarHidden(false, animated: animated)
        self.navigationController?.setColor(color: .white)
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.navigationController?.setNavigationBarHidden(true, animated: animated)
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        
        // Customize the navigation bar's appearance
        self.navigationController?.setColor(color: .black)
    }
    
    // MARK: - Tap Handler

    @IBAction func expandLanguageTapped(_ sender: UIButton) {
        vm.dropDownModule.show()
        self.expandBtn.setImage(UIImage(named: "SupportUpArrow"), for: .normal)
    }
    
}

// MARK: - TableView DataSource , Delegates

extension WebSeriesVC : TableViewSRC{
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return vm.showData.count == 0 ? 2 : vm.showData.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: K.CellIdentifier.WebSeries.webSeriesShowListingCell) as! WebSeriesShowListingCell

        if vm.showData.count == 0{
            cell.showShimmer()
        }else{
            let data = vm.showData[indexPath.row]
            let categoryID = vm.categoryListingData[vm.dropDownModule.indexForSelectedRow ?? 0].id ?? 0
            cell.setData(data: data,selectedCategory: categoryID)
            cell.stopShimmer()
        }
        
        cell.btnTapped = { [self] (type) -> Void in
            updateFavLikes(type: type, index: indexPath.row)
        }
        
        return cell
    }
    
    func updateFavLikes(type : FavCellCLick, index : Int){
        let data = vm.showData[index]
        let categoryID = vm.categoryListingData[vm.dropDownModule.indexForSelectedRow ?? 0].id ?? 0
        switch type {
        case .favourite:
            guard let isFav = data.markAsFavourite ,let postID = data.id,let postType = data.contentMoreDetails?.first?.postType else{return}
            if let categoryIds = data.favouriteCategoryIDS?.rawValue {
                let components = categoryIds.components(separatedBy: ",")
                if isFav == true && (components.first == categoryID.toString() || components.last == categoryID.toString()){
                    vm.removeFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
                        if isDone{
                            vm.showData[index].markAsFavourite = false
                            vm.showData[index].favouriteCategoryIDS = ValueWrapper.stringValue("")
                            showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
                            K.GVar.reloadMyList = true
                        }
                    }
                }else{
                    vm.addFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
                        if isDone{
                            vm.showData[index].markAsFavourite = true
                            vm.showData[index].favouriteCategoryIDS = ValueWrapper.stringValue(categoryID.toString())
                            showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
                            K.GVar.reloadMyList = true
                        }
                    }
                }
                return
            }
            
//            if isFav == true && data.favouriteCategoryIDS?.intValue == 0{ // means this is fav
//                vm.removeFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
//                    if isDone{
//                        vm.showData[index].markAsFavourite = false
//                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
//                        K.GVar.reloadMyList = true
//                    }
//                }
//            }else if isFav == true && data.favouriteCategoryIDS?.intValue == categoryID{
//                vm.removeFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
//                    if isDone{
//                        vm.showData[index].markAsFavourite = false
//                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
//                        K.GVar.reloadMyList = true
//                    }
//                }
//            }else{
//                vm.addFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
//                    if isDone{
//                        vm.showData[index].markAsFavourite = true
//                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
//                        K.GVar.reloadMyList = true
//                    }
//                }
//            }
            
//            if isFav{
//                vm.removeFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
//                    if isDone{
//                        vm.showData[index].markAsFavourite = false
//                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
//                        K.GVar.reloadMyList = true
//                    }
//                }
//            }else{
//                vm.addFavourite(postID: postID, postType: postType, categoryID: categoryID, index: index) { [unowned self] isDone in
//                    if isDone{
//                        vm.showData[index].markAsFavourite = true
//                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
//                        K.GVar.reloadMyList = true
//                    }
//                }
//            }
        case .liked:
            guard let isLiked = data.isLiked ,let postID = data.id,let postType = data.contentMoreDetails?.first?.postType else{return}
            if isLiked{
                vm.unlikePost(postID: postID, postType: postType, index: index) { [unowned self] isDone in
                    if isDone{
                        vm.showData[index].isLiked = false
                        vm.showData[index].likesCount! -= 1
                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
                    }
                }
            }else{
                vm.likePost(postID: postID, postType: postType, index: index){ [unowned self] isDone in
                    if isDone{
                        vm.showData[index].isLiked = true
                        vm.showData[index].likesCount! += 1
                        showListingTableView.reloadRows(at: [IndexPath(row: index, section: 0)],with: .none)
                    }
                }
            }
        }
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        if vm.showData.count == 0 {return}
        let showData = vm.showData[indexPath.row]
        
        let sb = UIStoryboard(name: K.StoryBoard.webSeries, bundle: nil)
        let vcPush = sb.instantiateViewController(withIdentifier: K.StoryBoardID.WebSeries.webSeriesSeasonVC) as! WebSeriesSeasonVC
        vcPush.vm.showData = showData
        if let selectedIndex = vm.dropDownModule.indexForSelectedRow{
            let categoryID = vm.categoryListingData[selectedIndex]
            vcPush.vm.categoryID = categoryID.id
        }
        self.navigationController?.pushViewController(vcPush, animated: true)
    }
}

// MARK: - CollectionView Delegate and Data Source

extension WebSeriesVC : CollectionViewSRC{
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return vm.continueWatchingData.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: K.CellIdentifier.WebSeries.webSeriesCell, for: indexPath) as! WebSeriesCell
        let data = vm.continueWatchingData[indexPath.row]
        cell.setData(data: data)
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        print(indexPath.row)
    }
    
}

// MARK: - Collection Flow Layout

extension WebSeriesVC : UICollectionViewDelegateFlowLayout{

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return 5
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        let inset: CGFloat = 10
        return UIEdgeInsets(top: 0, left: inset, bottom: 0, right: inset)
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 0 // Space between cells
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let widthPerItem = collectionView.frame.width - 30 // Adjust to your desired width
        return CGSize(width: widthPerItem, height: 230)
    }
}


// MARK: - Animating scrollView

extension WebSeriesVC: UIScrollViewDelegate {
        
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        
        // Get the current vertical offset of the scroll view
        let y = scrollView.contentOffset.y

        // Define the height range for the header view
        let minHeaderHeight: CGFloat = 0.0 // Height at which the header becomes invisible
        let maxHeaderHeight: CGFloat = 200.0 // Maximum height when fully visible

        // Calculate the new height for the header view based on the scroll position
        let newHeaderHeight: CGFloat
        if y < 0 {
            // When scrolling up beyond the top, ensure the header view is fully expanded
            newHeaderHeight = maxHeaderHeight
        } else {
            // Calculate the new height for the header view, ensuring it doesn't go below the minimum height
            newHeaderHeight = max(minHeaderHeight, maxHeaderHeight - y)
        }

        // Update the header view's height constraint with the new height
        headerHeight.constant = newHeaderHeight

        // Animate the layout changes to smoothly transition the header height
        UIView.animate(withDuration: 0.3) {
            self.view.layoutIfNeeded()
        }
    }
}