djid_sirani_ios/Sirani/View/Sertifikat/SertifikatPublic/SertifikatPublicVC.swift

//
//  SertifikatPublicVC.swift
//  Sirani
//
//  Created by Hendi on 22/06/23.
//  Copyright © 2023 PT. Mitra Sinerji Teknoindo. All rights reserved.
//

import UIKit

class SertifikatPublicVC: UIViewController {

    // Outlets & Views
    @IBOutlet weak var certificatesTV: UITableView!
    @IBOutlet weak var progressLoading: UIView!
    @IBOutlet weak var layoutNoData: UIView!
    @IBOutlet weak var labelSubtitle: UILabel!
    
    // View Id
    private let sertifikatPublicCellId = "SertifikatPublicCell"
    
    // Segue Id
    private let sertifikatPublicSearchSegueId = "searchSertifikatPublicSegueId"
    private let unwindToHomeSegueId = "unwindSertifikatPublicToHomeSegueId"

    // Initialize
    private var presenter: SertifikatPresenter!
    private var certificates: [CertificateData] =  [CertificateData]()

    // Request Params
    private var limit: Int = 5
    private var page: Int = 1
    private var status: String = "sertifikat_terbit"
    private var search: String = ""
    
    // Others
    private var loading = false
    private var lastDataLoadedEmpty = false
    private var loadMore = false
    private var kode: Int?
    private var isSertifikatPublic: Bool = true
    
    // View Lifecycles
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        certificatesTV.delegate = self
        certificatesTV.dataSource = self
        
        presenter = SertifikatPresenter(siraniApiServices: SiraniApiServices())
        presenter.attachView(view: self)
        loadCertificateData()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        presenter.attachView(view: self)

    }
    
    override func viewDidDisappear(_ animated: Bool) {
        presenter.detachView()
    }
    
    // private functions
    private func loadCertificateData() {
        if !loading && !lastDataLoadedEmpty {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.loadPublicCertificatesData(status: status, limit: limit, page: page, search: search)
            } else {
                showNoConnection()
            }
        }
    }
    
    // MARK: - Private Function
    // Actions
    @IBAction func onBtnBackTap(_ sender: Any) {
        performSegue(withIdentifier: unwindToHomeSegueId, sender: self)
    }
    
    @IBAction func onBtnSearchTap(_ sender: Any) {
        performSegue(withIdentifier: sertifikatPublicSearchSegueId, sender: self)
    }
    
    @IBAction func unwindToSertifikatPublic(segue: UIStoryboardSegue) {}

}

// View Delegate Protocols
extension SertifikatPublicVC: SertifikatViewDelegate {
    func showNoConnection() {
        let alertNoConnection = UIAlertController(
            title: Constants.instance.ALERT_NO_CONNECTION_TITLE,
            message: Constants.instance.ALERT_NO_CONNECTION_MSG,
            preferredStyle: .alert
        )
        alertNoConnection.addAction(
            UIAlertAction(title: Constants.instance.ALERT_NO_CONNECTION_YESS, style: .default, handler: nil)
        )
        self.present(alertNoConnection, animated: true, completion: nil)
    }
    
    func showLoading() {
        loading = true
        progressLoading.show()
    }
    
    func hideLoading() {
        loading = false
        progressLoading.hide()
    }
    
    func showNoDataLayout() {
        if page == 1 {
            layoutNoData.show()
        }
    }
    
    func hideNoDataLayout() {
        layoutNoData.hide()
    }
    
    func setCertificates(certificates: [CertificateData]) {
        if page == 1 {
            layoutNoData.hide()
        }
        
        if certificates.count > 0 {
            
            for certificate in certificates {
                self.certificates.append(certificate)
                certificatesTV.beginUpdates()
                certificatesTV.insertRows(
                    at: [IndexPath(row: self.certificates.count-1, section: 0)],
                    with: .none
                )
                certificatesTV.endUpdates()
            }
            
            page += 1
            loadMore = true
        } else {
            lastDataLoadedEmpty = true
            loadMore = false
        }
    }
}

// UITableController Protocols
extension SertifikatPublicVC: UITableViewDelegate, UITableViewDataSource, UIScrollViewDelegate, SertifikatNewCellDelegate {

    func openSertifikatDetail(data: CertificateData?) {
        self.kode = data?.lic_id
        performSegue(withIdentifier: "sertifikatPublicDetailSegueId", sender: self)
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return certificates.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if tableView == certificatesTV {
            if let cell = tableView.dequeueReusableCell(withIdentifier: sertifikatPublicCellId, for: indexPath) as? SertifikatNewCell {
                
                cell.cellDelegate = self
                cell.card.tag = indexPath.row
                let certificate = certificates[indexPath.row]
                cell.updateViews(certificateData: certificate)
                
                return cell
            } else {
                return SertifikatNewCell()
            }
        } else {
            return SertifikatNewCell()
        }
    }
    
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        let threshold = -5
        let contentOffset = scrollView.contentOffset.y
        let maximumOffset = scrollView.contentSize.height - scrollView.frame.size.height;
        
        if loadMore && !loading && (Int(maximumOffset - contentOffset) <= threshold) {
            loadCertificateData()
        }
    }
    
}

// SearchSertifikatNewModal Delegate Protocols
extension SertifikatPublicVC: SearchSertifikatNewDelegate {
    func onSearch(search: String, status: String, jenisLabel: String) {
        presenter.attachView(view: self)

        loadMore = false
        loading = false
        lastDataLoadedEmpty = false

        self.limit = 5
        self.page = 1
        self.search = search
        self.status = status

        certificates.removeAll()
        certificatesTV.reloadData()
        labelSubtitle.text = jenisLabel

        loadCertificateData()
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == sertifikatPublicSearchSegueId {
            let destinationVC: SearchSertifikatNewVC = segue.destination as! SearchSertifikatNewVC
            destinationVC.delegate = self
            destinationVC.isSertifikat = 2
        }

        if let detailSertifikatVC = segue.destination as? QRScannerVC {
            detailSertifikatVC.kode = kode
            detailSertifikatVC.isSertifikatPublic = isSertifikatPublic
        }
    }

}