//
//  SertifikatBelumUploadVC.swift
//  Sirani
//
//  Created by Anhar Solehudin on 16/04/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import UIKit
import MobileCoreServices

class SertifikatBelumUploadVC: UIViewController {
    
    // Outlets
    @IBOutlet weak var sertBlmUploadTV: UITableView!
    @IBOutlet weak var noDataLayout: UIView!
    @IBOutlet weak var progressLayout: UIView!
    @IBOutlet weak var progress: UIActivityIndicatorView!
    @IBOutlet weak var modalUploadLayout: UIView!
    @IBOutlet weak var lblSelectedAplikasiId: UILabel!
    @IBOutlet weak var lblSelectedNo: UILabel!
    @IBOutlet weak var lblSelectedTanggal: UILabel!
    @IBOutlet weak var lblSelectedPlgId: UILabel!
    @IBOutlet weak var lblSelectedNib: UILabel!
    @IBOutlet weak var lblSelectedCustName: UILabel!
    @IBOutlet weak var lblSelectedEqpName: UILabel!
    @IBOutlet weak var lblSelectedMerk: UILabel!
    @IBOutlet weak var lblSelectedModel: UILabel!
    @IBOutlet weak var lblSelectedBrand: UILabel!
    @IBOutlet weak var btnSelectedSimpan: UIButton!
    @IBOutlet weak var btnSelectQrCode: UIButton!
    @IBOutlet weak var btnSelectKeterangan: UIButton!
    @IBOutlet weak var btnSelectPeringatan: UIButton!
    @IBOutlet weak var lblSelectedQrCodeFilename: UILabel!
    @IBOutlet weak var lblSelectedKetFilename: UILabel!
    @IBOutlet weak var lblSelectedPeringatanFilename: UILabel!
    
    // View Id
    private let cellId = "sertifikatBlmUploadCellId"
    
    // Segue Id
    private let unwindToHomeSegueId = "unwindSertBlmUploadToHomeSegueId"
    private let searchSegueId = "searchSertifikatBelumUploadSegueId"
    
    // String Message
    private let alertNoConnectionTitle = "Informasi"
    private let alertNoConnectionMsg = "Sepertinya Anda sedang tidak tersambung pada koneksi internet"
    private let alertNoConnectionActionYes = "OK"
    
    // Initialize
    private var presenter: SertifikatBelumUploadPresenter!
    private var dataList: [SertifikatBelumUpload] =  [SertifikatBelumUpload]()
    private var documentInteractorController: UIDocumentInteractionController!
    private var imagePickerController = UIImagePickerController()
    
    // Constants
    private let QR_CODE_FILE_TAG_ID = 21
    private let KETERANGAN_FILE_TAG_ID = 22
    private let PERINGATAN_FILE_TAG_ID = 23
    
    // Request Params
    private var cursor: Int = 0
    private var prev: Int = 1
    private var jenis: String = ""
    private var columns: String = ""
    private var search: String = ""
    
    // Variables
    private var selectedFileTagId = 0
    private var plgId = 0
    private var aplikasiId = 0
    private var urlFileQrCode: URL?
    private var urlFileKeterangan: URL?
    private var urlFilePeringatan: URL?
    private var filenameQrCode: String = ""
    private var filenameKeterangan: String = ""
    private var filenamePeringatan: String = ""
    private var loading = false
    private var lastDataLoadedEmpty = false
    private var loadMore = false
    
    // View Lifecycles
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        sertBlmUploadTV.delegate = self
        sertBlmUploadTV.dataSource = self
        sertBlmUploadTV.separatorStyle = .none
        sertBlmUploadTV.rowHeight = UITableView.automaticDimension
        sertBlmUploadTV.estimatedRowHeight = 220
        
        presenter = SertifikatBelumUploadPresenter(siraniApiServices: SiraniApiServices())
        presenter.attachView(view: self)
        loadData()
        
        imagePickerController.delegate = self
    }
    
    override func viewWillAppear(_ animated: Bool) {
        customSomeViews()
        presenter.attachView(view: self)
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        presenter.detachView()
    }
    
    // private functions
    private func customSomeViews() {
        btnSelectedSimpan.layer.cornerRadius = 5
        btnSelectQrCode.layer.borderWidth = 1
        btnSelectQrCode.layer.borderColor = #colorLiteral(red: 0.3333333433, green: 0.3333333433, blue: 0.3333333433, alpha: 1)
        btnSelectKeterangan.layer.borderWidth = 1
        btnSelectKeterangan.layer.borderColor = #colorLiteral(red: 0.3333333433, green: 0.3333333433, blue: 0.3333333433, alpha: 1)
        btnSelectPeringatan.layer.borderWidth = 1
        btnSelectPeringatan.layer.borderColor = #colorLiteral(red: 0.3333333433, green: 0.3333333433, blue: 0.3333333433, alpha: 1)
        btnSelectQrCode.layer.cornerRadius = 5
        btnSelectKeterangan.layer.cornerRadius = 5
        btnSelectPeringatan.layer.cornerRadius = 5
    }
    
    private func loadData() {
        if !loading && !lastDataLoadedEmpty {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.loadData(cursor: cursor, prev: prev, jenis: jenis, columns: columns, search: search)
            } else {
                showNoConnection()
            }
        }
    }
    
    private func downloadFile(urlWeb: String, filename: String) {
        if !loading {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.downloadFile(urlWeb: urlWeb, filename: filename)
            } else {
                showNoConnection()
            }
        }
    }
    
    private func loadUploadDetails(aplikasiId: Int) {
        if !loading {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.loadUploadDetail(aplikasiId: aplikasiId)
            } else {
                showNoConnection()
            }
        }
    }
    
    private func uploadFile(plgId: Int, aplId: Int, qrCodeFileURL: URL, keteranganFileURL: URL, peringatanFileURL: URL, qrCodeFilename: String, keteranganFilename: String, peringatanFilename: String) {
        if !loading {
            if ConnectionHelper.isConnectedToNetwork() {
                presenter.uploadSertifikasi(
                    plgId: plgId,
                    aplId: aplId,
                    qrCodeFileURL: qrCodeFileURL,
                    keteranganFileURL: keteranganFileURL,
                    peringatanFileURL: peringatanFileURL,
                    qrCodeFilename: qrCodeFilename,
                    keteranganFilename: keteranganFilename,
                    peringatanFilename: peringatanFilename
                )
            } else {
                showNoConnection()
            }
        }
    }
    
    private func showAlert(title: String, msg: String, actionTitle: String) {
        let alertNoConnection = UIAlertController(
            title: title,
            message: msg,
            preferredStyle: .alert
        )
        alertNoConnection.addAction(
            UIAlertAction(title: actionTitle, style: .default, handler: nil)
        )
        self.present(alertNoConnection, animated: true, completion: nil)
    }
    
    private func showPicker() {
        let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
        
        let gallery = UIAlertAction(title: "Galeri", style: .default) { action in
            self.showImagePicker()
        }
        
        let fileManager = UIAlertAction(title: "Dokumen", style: .default) { action in
            self.showDocumentPicker()
        }
        
        let cancel = UIAlertAction(title: "Batal", style: .cancel, handler: nil)
        
        actionSheet.addAction(gallery)
        actionSheet.addAction(fileManager)
        actionSheet.addAction(cancel)
        
        self.present(actionSheet, animated: true, completion: nil)
    }
    
    private func showImagePicker() {
        imagePickerController.allowsEditing = false
        imagePickerController.sourceType = .photoLibrary
        
        self.present(imagePickerController, animated: true, completion: nil)
    }
    
    private func showDocumentPicker() {
        let types = [String(kUTTypePDF), String(kUTTypeText), String(kUTTypeJPEG), String(kUTTypePNG)]
        let picker = UIDocumentPickerViewController(documentTypes: types, in: .import)
        picker.delegate = self
        picker.modalPresentationStyle = .formSheet
        self.present(picker, animated: true, completion: nil)
    }
    
    
    // Actions
    @IBAction func onBtnBackTap(_ sender: Any) {
        performSegue(withIdentifier: unwindToHomeSegueId, sender: self)
    }
    
    @IBAction func onBtnSearchTap(_ sender: Any) {
        performSegue(withIdentifier: searchSegueId, sender: self)
    }
    
    @IBAction func unwindToSertifikatBelumUpload(segue: UIStoryboardSegue) {}
    
    @IBAction func onBtnSelectQrCodeTap(_ sender: Any) {
        selectedFileTagId = QR_CODE_FILE_TAG_ID
        showPicker()
    }
    
    @IBAction func onBtnSelectKetTap(_ sender: Any) {
        selectedFileTagId = KETERANGAN_FILE_TAG_ID
        showPicker()
    }
    
    @IBAction func onBtnSelectPeringatan(_ sender: Any) {
        selectedFileTagId = PERINGATAN_FILE_TAG_ID
        showPicker()
    }
    
    @IBAction func onBtnUploadSave(_ sender: Any) {
        if (urlFileQrCode != nil && urlFileKeterangan != nil && urlFilePeringatan != nil) {
            uploadFile(
                plgId: plgId,
                aplId: aplikasiId,
                qrCodeFileURL: urlFileQrCode!,
                keteranganFileURL: urlFileKeterangan!,
                peringatanFileURL: urlFilePeringatan!,
                qrCodeFilename: filenameQrCode,
                keteranganFilename: filenameKeterangan,
                peringatanFilename: filenamePeringatan
            )
            
        } else {
            showAlert(title: "Informasi", msg: "Mohon Lengkapi Semua File", actionTitle: "OK")
        }
    }
    
    @IBAction func onBtnUploadCancel(_ sender: Any) {
        modalUploadLayout.hide()
    }
    
}

// View Delegate Protocols
extension SertifikatBelumUploadVC: SertifikatBelumUploadViewDelegate {
    
    func showNoConnection() {
        showAlert(title: alertNoConnectionTitle, msg: alertNoConnectionMsg, actionTitle: alertNoConnectionActionYes)
    }
    
    func showLoading() {
        loading = true
        progress.startAnimating()
        progressLayout.show()
    }
    
    func hideLoading() {
        loading = false
        progress.stopAnimating()
        progressLayout.hide()
    }
    
    func showNoDataLayout() {
        if cursor == 0 {
            noDataLayout.show()
        }
    }
    
    func hideNoDataLayout() {
        noDataLayout.hide()
    }
    
    func setDataList(dataList: [SertifikatBelumUpload]) {
        
        if cursor == 0 {
            noDataLayout.hide()
        }
        
        if dataList.count > 0 {
            
            for data in dataList {
                self.dataList.append(data)
                sertBlmUploadTV.beginUpdates()
                sertBlmUploadTV.insertRows(
                    at: [IndexPath(row: self.dataList.count-1, section: 0)],
                    with: .none
                )
                sertBlmUploadTV.endUpdates()
            }
            
            let totalData = dataList.count
            cursor += totalData
            loadMore = true
        } else {
            lastDataLoadedEmpty = true
            loadMore = false
        }
    }
    
    func onDownloadSuccess(urlFile: URL) {
        self.documentInteractorController = UIDocumentInteractionController()
        self.documentInteractorController.delegate = self
        self.documentInteractorController.url = urlFile
        self.documentInteractorController.presentPreview(animated: true)
    }
    
    func onDownloadFailed() {
        showAlert(title: "Informasi", msg: "File Tidak Ditemukan", actionTitle: "OK")
    }
    
    func setModalUploadDetail(sertifikatBelumUploadDetail: SertifikatBelumUploadDetail) {
        plgId = sertifikatBelumUploadDetail.plg_id
        aplikasiId = sertifikatBelumUploadDetail.apl_id
        lblSelectedAplikasiId.text = "\(aplikasiId)"
        lblSelectedNo.text = "\(sertifikatBelumUploadDetail.nomor)"
        lblSelectedTanggal.text = "\(sertifikatBelumUploadDetail.tgl) s/d \(sertifikatBelumUploadDetail.exp)"
        lblSelectedPlgId.text = "PLG ID: \(plgId)"
        lblSelectedNib.text = "NIB: \(sertifikatBelumUploadDetail.nib)"
        lblSelectedCustName.text = "\(sertifikatBelumUploadDetail.cust_name)"
        lblSelectedEqpName.text = "\(sertifikatBelumUploadDetail.eqp_name)"
        lblSelectedMerk.text = "Merk: \(sertifikatBelumUploadDetail.merk)"
        lblSelectedModel.text = "Model: \(sertifikatBelumUploadDetail.model)"
        lblSelectedBrand.text = "Brand: \(sertifikatBelumUploadDetail.brand)"
        modalUploadLayout.show()
    }
    
    func onUploadSuccess() {
        modalUploadLayout.hide()
        showAlert(title: "Informasi", msg: "Proses Simpan Berhasil", actionTitle: "OK")
    }
    
    func onUploadFailed() {
        showAlert(title: "Gagal", msg: "Proses Simpan Gagal", actionTitle: "OK")
    }
}

// UITableController Protocols
extension SertifikatBelumUploadVC: UITableViewDelegate, UITableViewDataSource, UIScrollViewDelegate, SertifikatBelumUploadCellDelegate {
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return dataList.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if tableView == sertBlmUploadTV {
            if let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as? SertifikatBelumUploadCell {
                
                let data = dataList[indexPath.row]
                cell.cellDelegate = self
                cell.btnUpload.tag = indexPath.row
                cell.btnDownloadSt1.tag = indexPath.row
                cell.btnDownloadSt2.tag = indexPath.row
                cell.btnDownloadSpt.tag = indexPath.row
                cell.updateViews(sertBlmUpload: data)
                
                return cell
            } else {
                return SertifikatBelumUploadCell()
            }
        } else {
            return SertifikatBelumUploadCell()
        }
    }
    
    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) {
            loadData()
        }
    }
    
    func download(urlWeb: String?, filename: String?) {
        if let url = urlWeb {
            if !url.isEmpty {
                if let fileName = filename {
                    self.downloadFile(urlWeb: url, filename: fileName)
                } else {
                    self.downloadFile(urlWeb: url, filename: "file.jpg")
                }
            } else {
                showAlert(title: "Informasi", msg: "File Tidak Ditemukan", actionTitle: "OK")
            }
        } else {
            showAlert(title: "Informasi", msg: "File Tidak Ditemukan", actionTitle: "OK")
        }
        
    }
    
    func upload(aplikasiId: Int?) {
        if let aplId = aplikasiId {
            loadUploadDetails(aplikasiId: aplId)
        }
    }
    
}

// DocumentInteractionController
extension SertifikatBelumUploadVC: UIDocumentInteractionControllerDelegate {
    func documentInteractionControllerViewControllerForPreview(_ controller: UIDocumentInteractionController) -> UIViewController {
        guard let navVC = self.navigationController else {
            return self
        }
        return navVC
    }
}

// Search Delegate Protocols
extension SertifikatBelumUploadVC: SearchSertifikatBelumUploadDelegate {
    func onSearch(search: String, parameter: String, jenis: String) {
        presenter.attachView(view: self)
        
        loadMore = false
        loading = false
        lastDataLoadedEmpty = false
        
        self.cursor = 0
        self.prev = 1
        self.search = search
        self.jenis = jenis
        self.columns = parameter

        dataList.removeAll()
        sertBlmUploadTV.reloadData()
        
        loadData()
    }

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

extension SertifikatBelumUploadVC: UIDocumentPickerDelegate, UINavigationControllerDelegate {
    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
        if urls.count > 0 {
            let selectedUrlFile = urls[0] as URL
            let url = selectedUrlFile.absoluteString
            let urlSplits = url.split(separator: "/")
            let filename = urlSplits[urlSplits.count-1]
            
            if (selectedFileTagId == QR_CODE_FILE_TAG_ID) {
                urlFileQrCode = selectedUrlFile
                filenameQrCode = String(filename)
                lblSelectedQrCodeFilename.text = filenameQrCode
            } else if (selectedFileTagId == KETERANGAN_FILE_TAG_ID) {
                urlFileKeterangan = selectedUrlFile
                filenameKeterangan = String(filename)
                lblSelectedKetFilename.text = filenameKeterangan
            } else if (selectedFileTagId == PERINGATAN_FILE_TAG_ID) {
                urlFilePeringatan = selectedUrlFile
                filenamePeringatan = String(filename)
                lblSelectedPeringatanFilename.text = filenamePeringatan
            }
        }
    }
    
    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
        print("document view was cancelled")
    }
}

extension SertifikatBelumUploadVC: UIImagePickerControllerDelegate {
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        
        if let selectedUrlFile = info[UIImagePickerController.InfoKey.imageURL] as? URL {
            
            let url = selectedUrlFile.absoluteString
            let urlSplits = url.split(separator: "/")
            let filename = urlSplits[urlSplits.count-1]
            
            if (selectedFileTagId == QR_CODE_FILE_TAG_ID) {
                urlFileQrCode = selectedUrlFile
                filenameQrCode = String(filename)
                lblSelectedQrCodeFilename.text = filenameQrCode
            } else if (selectedFileTagId == KETERANGAN_FILE_TAG_ID) {
                urlFileKeterangan = selectedUrlFile
                filenameKeterangan = String(filename)
                lblSelectedKetFilename.text = filenameKeterangan
            } else if (selectedFileTagId == PERINGATAN_FILE_TAG_ID) {
                urlFilePeringatan = selectedUrlFile
                filenamePeringatan = String(filename)
                lblSelectedPeringatanFilename.text = filenamePeringatan
            }
        }
        
        dismiss(animated: true, completion: nil)
    }
    
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        print("gallery was cancelled")
    }
}