//
//  KMConvertOCRSettingItemView.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2022/12/6.
//


class KMConvertOCRSettingItemView: KMConvertBaseView {
    @IBOutlet weak var titleLabel: NSTextField!
    @IBOutlet weak var checkBox: NSBox!
    @IBOutlet weak var languageBox: NSBox!
    
    private var _checkVC: KMDesignButton?
    var checkVC: KMDesignButton? {
        get {
            return self._checkVC
        }
    }
    
    private var _languageVC: KMDesignSelect?
    var progressController: SKProgressController?

    private var _languageIndex: Int = 0
    var languageIndex: Int {
        get {
            return self._languageIndex
        }
        set {
            self._languageIndex = newValue
            
            self._languageVC?.selectItem(at: newValue)
        }
    }
    
    var lanugageDidSelected: KMValueDidChangeBlock?
    var reachabilityAlert: NSAlert?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        self._checkAction()
    }
    
    override func initSubViews() {
        super.initSubViews()
        
        self._checkVC = KMDesignButton(withType: .CheckBox)
        self.checkBox.contentView = self._checkVC!.view
        
        self._languageVC = KMDesignSelect(withType: .Combox)
        self.languageBox.contentView = self._languageVC?.view
    }
    
    override func initDefaultVlaue() {
        super.initDefaultVlaue()
        
        self.titleLabel.stringValue = NSLocalizedString("OCR Settings", comment: "")
        self.titleLabel.textColor = NSColor.km_init(hex: "#616469")
        self.titleLabel.font = .SFProTextRegularFont(12)
        
        self.checkBox.fillColor = .clear
        self._checkVC?.target = self
        self._checkVC?.action = #selector(checkBoxAction)
        self._checkVC?.stringValue = NSLocalizedString("Recognize text if needed", comment: "")
        self._checkVC?.checkbox_radio()
        self._checkVC?.state = .Custom
        
        self.languageBox.fillColor = .clear
        self._languageVC?.delete = self

        self._languageVC?.isScrollPop = true
        self._languageVC?.removeAllItems()
//        self._languageVC?.addItems(withObjectValues: KMPDFConvertManager.defaultManager.languages_asc_strings)
        if (self.languageIndex < self._languageVC!.numberOfItems) {
            self._languageVC?.selectItem(at: self.languageIndex)
        } else {
            self._languageVC?.selectItem(at: 2)
        }
    }
    
    @objc func checkBoxAction(sender: NSButton) {
#if VERSION_DMG
        let isExist = KMResourceDownloadManager.manager.documentAIBundleExists()
        if isExist || self._checkVC?.state == .Checked {
            if let state = self._checkVC?.state {
                self._checkVC?.state = state == .Checked ? .Norm : .Checked
            }
            
            self._checkAction()
        } else {
            let alert = NSAlert()
            alert.messageText = NSLocalizedString("Download OCR", comment: "")
            alert.informativeText = NSLocalizedString("Using OCR requires downloading additional resource pack. Do you want to continue?", comment: "")
            alert.addButton(withTitle: NSLocalizedString("Yes", comment: ""))
            alert.addButton(withTitle: NSLocalizedString("No", comment: ""))
            alert.beginSheetModal(for: self.window!) { [weak self] result in
                if (result == .alertFirstButtonReturn) { /// 取消
                    self?.downLoad()
                } else if result == .alertSecondButtonReturn {
                    return
                }
            }
        }
#else
        if let state = self._checkVC?.state {
            self._checkVC?.state = state == .Checked ? .Norm : .Checked
        }
        
        self._checkAction()
#endif
    }
    
#if VERSION_DMG
    func downLoad() {
        DispatchQueue.main.async {
            self.showProgressWindow()
            self.progressController?.maxValue = Double(100)
        }
        KMResourceDownloadManager.manager.downloadFramework(progress: { progress in
            self.progressController?.doubleValue = Double(progress*100)
        }, result: { result, downloadState  in
            if result {
                if let state = self._checkVC?.state {
                    self._checkVC?.state = state == .Checked ? .Norm : .Checked
                }
                
                self._checkAction()
                
                if let state = self._checkVC?.state {
                    self._checkVC?.state = state == .Checked ? .Norm : .Checked
                }
                
                self._checkAction()
                self.hiddenProgressWindow()
            } else if downloadState == .retry {
                DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.2, execute: { [weak self] in
                    self?.downLoad()
                })
            } else {
                self.hiddenProgressWindow()
            }
        })
    }
#endif
    
    public func checkAction() {
        self._checkAction()
    }
    
    private func _checkAction() {
        guard let state = self._checkVC?.state else {
            return
        }
        
        self._languageVC?.enabled = state == .Checked
    }
    
    func showProgressWindow() {
        let progress = SKProgressController()
        progress.window?.backgroundColor = NSColor.km_init(hex: "#36383B")
        progress.window?.contentView?.wantsLayer = true
        progress.window?.contentView?.layer?.backgroundColor = NSColor.km_init(hex: "#36383B").cgColor
        progress.progressField.textColor = NSColor.white
        progress.message = NSLocalizedString("Download...", comment: "")

        progress.closeBlock = { [weak self] in
#if VERSION_DMG
            KMResourceDownloadManager.manager.cancelDownload()
#endif
        }
        
        self.progressController = progress
        self.window?.beginSheet(progress.window!)
    }
    
    func hiddenProgressWindow() {
        DispatchQueue.main.async {
            self.progressController?.doubleValue = 100.0
            if (self.progressController != nil) {
                self.window?.endSheet((self.progressController?.window)!)
                self.progressController = nil
            }
        }
    }
}

extension KMConvertOCRSettingItemView: KMSelectPopButtonDelegate {
    func km_comboBoxSelectionDidChange(_ obj: KMDesignSelect) {
        if (obj.isEqual(to: self._languageVC)) {
            guard let index = self._languageVC?.indexOfSelectedItem, index >= 0 else {
                return
            }
            self._languageIndex = index
            
            guard let callback = self.lanugageDidSelected else {
                return
            }
            callback(index, nil)
        }
    }
}