//
//  BlogsVC.swift
//  WOKA
//
//  Created by MacBook Pro on 01/08/24.
//

import UIKit

class BlogsVC: UIViewController {

    @IBOutlet weak var blogCV: UICollectionView!
    @IBOutlet weak var noDataStack: UIStackView!
    
    var blogData = [BlogDM.Blog]()

    override func viewDidLoad() {
        super.viewDidLoad()
        setupCell()
        getBLogs()
        let color1 = #colorLiteral(red: 0.5921568627, green: 0.2588235294, blue: 0.8941176471, alpha: 1)
        let color2 = #colorLiteral(red: 0.368627451, green: 0.1215686275, blue: 0.768627451, alpha: 1)
        
        self.title = "BLOGS".localized(loc: AuthFunc.shareInstance.languageSelected.rawValue)
        self.view.applyGradient(colors: [color2, color1], startPoint: CGPoint(x: 0, y: 0), endPoint: CGPoint(x: 0.8, y: 0))
        navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
        navigationController?.navigationBar.shadowImage = UIImage()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.setNavigationBarHidden(false, animated: animated)
    }
    
    override func viewDidAppear(_ animated: Bool) {
        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)
    }
        
    func setupCell(){
        blogCV.register(UINib(nibName: K.CellIdentifier.Home.blogsCell, bundle: nil), forCellWithReuseIdentifier: K.CellIdentifier.Home.blogsCell)
        blogCV.delegate = self
        blogCV.dataSource = self
    }
    
    @IBAction func retryBtnTapped(_ sender: UIButton) {
        getBLogs()
    }
    
    // MARK: - Get BLogs Data

    func getBLogs(){
        Utilities.startProgressHUD()
        NetworkManager.shareInstance.apiRequest(url: APIEndPoints.Home.blogs, method: .get) { [weak self](result : Result<BaseResponseModel<BlogDM>, NetworkManager.APIError>) in
            guard let self else{return}
            switch result{
            case .success(let data):
                switch data.success{
                case 0:
                    /*
                     Error
                     */
                    Utilities.dismissProgressHUD()
                    self.toast(msg: data.message ?? "Unrecognised error" , time: 2)
                    self.noDataStack.isHidden = false
                    self.blogCV.isHidden = true
                case 1:
                    Utilities.dismissProgressHUD()
                    guard let data = data.data?.blogs else{return}
                    blogData = data
                    blogCV.reloadData()
                default:
                    break
                }
            case .failure(let error):
                Utilities.dismissProgressHUD()
                toast(msg: error.localizedDescription , time: 2)
            }
        }
    }
}

// MARK: - CollectionView Delegate

extension BlogsVC : CollectionViewSRC{
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return blogData.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: K.CellIdentifier.Home.blogsCell, for: indexPath) as! BlogsCell
        cell.setData(data : blogData[indexPath.row])
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        let data = blogData[indexPath.row]
        let sb = UIStoryboard(name: K.StoryBoard.theme, bundle: nil)
        let vcPush = sb.instantiateViewController(withIdentifier: K.StoryBoardID.Theme.blogDetailsVC) as! BlogDetailsVC
        vcPush.blogData = data
        vcPush.modalPresentationStyle = .overCurrentContext
        vcPush.modalTransitionStyle = .crossDissolve
        self.present(vcPush, animated: true)
    }
}

// MARK: - Collection Flow Layout

extension BlogsVC : UICollectionViewDelegateFlowLayout{
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 5
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return 5
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let itemsPerRow: CGFloat = 2
        let paddingSpace = 5 * (itemsPerRow + 1)
        let availableWidth = collectionView.frame.width - paddingSpace
        let widthPerItem = availableWidth / itemsPerRow
        return CGSize(width: widthPerItem, height: widthPerItem)
    }
}