//
//  PDFViewController.swift
//  Befund
//
//  Created by Irakli Abetschkhrischwili on 28.05.22.
//  Copyright © 2022 MVZ Dr. Stein und Kollegen. All rights reserved.

import UIKit
import PDFKit

class PDFViewController: UIViewController, PDFViewDelegate
{
    @IBOutlet weak var LBL_MY_RESULTS: UILabel!
    @IBOutlet weak var PDFViewerArea: UIView!
    private var PDFViewer: PDFView!
    private var PDFData: Data? = nil
    private var currentPdfDoc: PDFDocument? = nil
    //@IBOutlet weak var LBL_BACK: UILabel!
    
    @IBOutlet weak var mainBtnBack: UIButton!
    @IBOutlet weak var mainBtnMenu: UIButton!
    
    @IBOutlet weak var popupOverlay: UIView!
    @IBOutlet weak var popupContent: UIView!
    
    @IBOutlet weak var popupBtnPrint: UIButton!
    @IBOutlet weak var popupBtnShare: UIButton!
    @IBOutlet weak var popupBtnBack: UIButton!

    override func viewDidLoad()
    {
        super.viewDidLoad()
        
        self.PDFViewer = PDFView(frame: self.PDFViewerArea.bounds)
        self.PDFViewerArea.addSubview(self.PDFViewer)
        self.PDFViewer.sizeToFit()
        self.PDFViewer.autoScales = true
        self.PDFViewer.displayDirection = .horizontal
        
        self.PDFViewer.delegate = self
        //self.LBL_BACK.text = Core.Lang.Get(key: "BTN_BACK")
        self.LBL_MY_RESULTS.text = Core.Lang.Get(key: "BTN_MY_RESULT")
        
        if(self.PDFData != nil)
        {
            self.currentPdfDoc = PDFDocument(data: self.PDFData!)
            self.PDFViewer.document = self.currentPdfDoc
            
        }
        
        self.popupOverlay.frame = self.view.frame
        self.view.addSubview(self.popupOverlay)
        self.popupOverlay.isHidden = true
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        self.InitLabels()
    }
    
    private func InitLabels()
    {
        self.LBL_MY_RESULTS.text = Core.Lang.Get(key: "BTN_MY_RESULT")
        //self.LBL_BACK.text = Core.Lang.Get(key: "BTN_BACK")

        self.popupBtnPrint.setTitle(Core.Lang.Get(key: "BTN_PRINT"), for: .normal)
        self.popupBtnShare.setTitle(Core.Lang.Get(key: "BTN_FILE_SHARE"), for: .normal)
        self.popupBtnBack.setTitle(Core.Lang.Get(key: "BTN_BACK"), for: .normal)
    }
    
    public func setContent(data: Data)
    {
        self.PDFData = data
    }
    
    @IBAction func goBack(_ sender: Any)
    {
        let transition = CATransition()
        transition.duration = 0.25
        transition.type = .push
        transition.subtype = .fromLeft
        self.view.window!.layer.add(transition, forKey: kCATransition)
        self.dismiss(animated: false)
    }
    
    @IBAction func PopupMenuShow(_ sender: Any)
    {
        self.popupContent.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
        self.popupOverlay.alpha = 0.0
        self.popupOverlay.isHidden = false
        
        UIView.animate(withDuration: 0.24) {
            self.popupContent.transform = CGAffineTransform.identity
            self.popupOverlay.alpha = 70.0
        }
    }
    
    @IBAction func PopupMenuHide(_ sender: Any)
    {
        
        UIView.animate(withDuration: 0.24, animations: {
            self.popupOverlay.alpha = 0.0
            self.popupContent.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
        }) {_ in
            self.popupOverlay.isHidden = true
        }
    }

    
    @IBAction func PrintButtonClick(_ sender: Any)
    {
        if(self.PDFViewer != nil)
        {
            let printController = UIPrintInteractionController.shared
            let printInfo = UIPrintInfo(dictionary: nil)
            printInfo.jobName = "Befunddruck"
            printInfo.outputType = .photo
            printController.printInfo = printInfo
            printController.printingItem = self.PDFData
            printController.present(animated: true)
            {
                (_, isPrinted, error) in
                
                if(error != nil)
                {
                    Core.Log.Error(err: error!, namespace: "PDFViewController", method: "PrintButtonClick")
                }
            }
        }
    }
    
    @IBAction func ShareButtonClick(_ sender: Any)
    {
        //var filesToShare = [Any]()
        //filesToShare.append(self.currentPdfDoc)
        
        if let pdfData = self.currentPdfDoc?.dataRepresentation()
        {
            let objectsToShare = [pdfData]
                    
            let activityViewController = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
            activityViewController.popoverPresentationController?.sourceView = self.view
            present(activityViewController, animated: true, completion: nil)
        }
    }
    
}