//
//  KMNAlertTipViewController.swift
//  PDF Reader Pro
//
//  Created by 丁林圭 on 2024/12/18.
//

import Cocoa

import KMComponentLibrary

typealias FormFieldHighlightCallback = () -> ()

typealias EnterPasswordCallback = () -> ()

typealias DigitalDetailsCallback = () -> ()

typealias RedactApplyCallback = () -> ()

typealias OCRApplyCallback = () -> ()

@objc public enum CPromptDignSignaturesState: NSInteger {
    case failure = 0
    case Unknown = 1
    case Success = 2
}

class KMNAlertTipViewController: KMNBaseViewController {
    
    //Form提示
    @IBOutlet var formComponentAlert: ComponentAlert!
    //Secure提示
    @IBOutlet var secureComponentAlert: ComponentAlert!
    //数字签名提示
    @IBOutlet var digitalComponentAlert: ComponentAlert!
    //密文提示
    @IBOutlet var redactComponentAlert: ComponentAlert!
    //OCR提示
    @IBOutlet var OCRComponentAlert: ComponentAlert!
    
    var type:CPromptDignSignaturesState = .failure
    
    var isShowFormAlert = true
    var isShowDigitalAlert = true
    var isShowSecureAlert = true
    var isShowRedactAlert = true
    var isShowOCRAlert = true

    weak var listView:CPDFListView?
    
    var formFieldHighlightCallback: FormFieldHighlightCallback?
    var enterPasswordCallback: EnterPasswordCallback?
    var digitalDetailsCallback: DigitalDetailsCallback?
    var redactApplyCallback: RedactApplyCallback?
    var OCRApplyCallback: OCRApplyCallback?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
    }
    
    override func initContentView() {
        super.initContentView()
    }
    
    override func updateUIThemeColor() {
        super.updateUIThemeColor()
    }
    
    override func updateUILanguage() {
        super.updateUILanguage()
        let highlightFormFiled = CPDFKitConfig.sharedInstance().enableFormFieldHighlight()
        var detailButtonString = ""
        if highlightFormFiled {
            detailButtonString = KMLocalizedString("Disable Highlight Effect")
        } else {
            detailButtonString = KMLocalizedString("Highlight Form Fields")
        }
        formComponentAlert.properties = ComponentAlertProperty(subTitle: KMLocalizedString("This document contains interactive form fields."),detailButtonString: detailButtonString)

        formComponentAlert.delegate = self
        
        secureComponentAlert.properties = ComponentAlertProperty(subTitle: KMLocalizedString("This document has a permission password."),detailButtonString: KMLocalizedString("Enter Password"))
        secureComponentAlert.delegate = self
        
        digitalComponentAlert.properties = ComponentAlertProperty(subTitle: KMLocalizedString("Signature is valid."),detailButtonString:nil)
        digitalComponentAlert.delegate = self
        
        redactComponentAlert.properties = ComponentAlertProperty(subTitle: KMLocalizedString("There are unapplied redactions in this file"),detailButtonString:KMLocalizedString("Apply"))
        redactComponentAlert.delegate = self
        
        OCRComponentAlert.properties = ComponentAlertProperty(subTitle: KMLocalizedString("This document contains scanned pages and requires OCR recognition before editing."),detailButtonString:KMLocalizedString("OCR"))
        OCRComponentAlert.delegate = self
    }
    
   public func reloadFormAlertUI() {
       if isShowFormAlert == true {
           var isContainsForm = false
           for i in 0..<(listView?.document?.pageCount ?? 0) {
               guard i < listView?.document?.pageCount ?? 0 else { continue }
               let page = listView?.document.page(at: i)
               if let annotations = page?.annotations, !annotations.isEmpty {
                   for annotation in annotations {
                       if annotation is CPDFWidgetAnnotation {
                           isContainsForm = true
                           break
                       }
                   }
               }
               if isContainsForm {
                   break
               }
           }
           if isContainsForm {
               if formComponentAlert.superview == nil {
                   formComponentAlert.frame = CGRect(x: 0, y: 0, width: listView?.frame.width ?? 0, height: 32.0)
                   formComponentAlert.autoresizingMask = .width
                   self.view.addSubview(formComponentAlert)
               }
               formComponentAlert.reloadData()
           } else {
               if formComponentAlert.superview != nil {
                   formComponentAlert.removeFromSuperview()
               }
           }
       } else {
           if formComponentAlert.superview != nil {
               formComponentAlert.removeFromSuperview()
           }
       }
    }
    
    public func reloadSecureAlertUI() {
        if isShowSecureAlert == true {
            if listView?.document.permissionsStatus == .user {
                if secureComponentAlert.superview == nil {
                    secureComponentAlert.frame = CGRect(x: 0, y: 0, width: listView?.frame.width ?? 0, height: 32.0)
                    secureComponentAlert.autoresizingMask = .width
                    self.view.addSubview(secureComponentAlert)
                }
                secureComponentAlert.reloadData()
            } else {
                if secureComponentAlert.superview != nil {
                    secureComponentAlert.removeFromSuperview()
                }
            }
        } else {
            if secureComponentAlert.superview != nil {
                secureComponentAlert.removeFromSuperview()
            }
        }
    }
    
    public func reloadDigitalAlertUI() {
        if isShowDigitalAlert == true {
            let signatures:[CPDFSignature] =  listView?.signatures as? [CPDFSignature] ?? []
            if signatures.count > 0 {
                if digitalComponentAlert.superview == nil {
                   digitalComponentAlert.frame = CGRect(x: 0, y: 0, width: listView?.frame.width ?? 0, height: 32.0)
                   digitalComponentAlert.autoresizingMask = .width
                    self.view.addSubview(digitalComponentAlert)
                }
                
                var isSignVerified = false
                var isCertTrusted = false
                
                for item in signatures {
                    let signature: CPDFSignature = item
                    if signature.signers != nil {
                        let signer = signature.signers.first
                        if signer?.isCertTrusted == false {
                            isCertTrusted = false
                            break
                        } else {
                            isCertTrusted = true
                        }
                    }
                }
                
                for item in signatures {
                    let signature: CPDFSignature = item
                    if signature.signers != nil {
                        let signer = signature.signers.first
                        if signer?.isSignVerified == false {
                            isSignVerified = false
                            break
                        } else {
                            isSignVerified = true
                        }
                    }
                }
                                
                if (isSignVerified && isCertTrusted) {
                    self.type = .Success;
                } else if(isSignVerified && !isCertTrusted) {
                    self.type = .Unknown;
                } else {
                    self.type = .failure;
                }
                
                if (.Success == self.type) {
                    digitalComponentAlert.properties.messageType = .success
                    digitalComponentAlert.properties.iconImage = NSImage(named: "KMNImageNameSigntureVerifySuccess")
                    digitalComponentAlert.properties.subTitle = KMLocalizedString("Signature is valid.")
                } else if(.Unknown == self.type) {
                    digitalComponentAlert.properties.messageType = .warning
                    digitalComponentAlert.properties.iconImage = NSImage(named: "KMNImageNameSigntureTrustedFailure")

                    if(signatures.count > 1) {
                        digitalComponentAlert.properties.subTitle = KMLocalizedString("At least one signature is invalid.")
                    } else {
                        digitalComponentAlert.properties.subTitle = KMLocalizedString("Signature is invalid")
                    }
                } else {
                    digitalComponentAlert.properties.messageType = .error
                    digitalComponentAlert.properties.iconImage = NSImage(named: "KMNImageNameSigntureVerifyFailures")
                    if(signatures.count > 1) {
                        digitalComponentAlert.properties.subTitle = KMLocalizedString("At least one signature is invalid.")
                    } else {
                        digitalComponentAlert.properties.subTitle = KMLocalizedString("Signature is invalid")
                    }
                }
                digitalComponentAlert.reloadData()
            } else {
                if digitalComponentAlert.superview != nil {
                    digitalComponentAlert.removeFromSuperview()
                }
            }
        } else {
            if digitalComponentAlert.superview != nil {
                digitalComponentAlert.removeFromSuperview()
            }
        }
    }
    
    public func reloadRedactAlertUI() {
        if isShowRedactAlert == true {
            var isContainsRedact = false
            for i in 0..<(listView?.document?.pageCount ?? 0) {
                guard i < listView?.document?.pageCount ?? 0 else { continue }
                let page = listView?.document.page(at: i)
                if let annotations = page?.annotations, !annotations.isEmpty {
                    for annotation in annotations {
                        if annotation is CPDFRedactAnnotation {
                            isContainsRedact = true
                            break
                        }
                    }
                }
                if isContainsRedact {
                    break
                }
            }
            if isContainsRedact {
                if redactComponentAlert.superview == nil {
                    redactComponentAlert.frame = CGRect(x: 0, y: 0, width: listView?.frame.width ?? 0, height: 32.0)
                    redactComponentAlert.autoresizingMask = .width
                    self.view.addSubview(redactComponentAlert)
                }
                redactComponentAlert.reloadData()
            } else {
                if redactComponentAlert.superview != nil {
                    redactComponentAlert.removeFromSuperview()
                }
            }
        } else {
            if redactComponentAlert.superview != nil {
                redactComponentAlert.removeFromSuperview()
            }
        }
     }
    
    public func reloadOCRAlertUI() {
        if isShowOCRAlert == true && self.listView?.toolMode == .CEditPDFToolMode {
            var isContainsImagePage = false
            for i in 0..<(listView?.document?.pageCount ?? 0) {
                guard i < listView?.document?.pageCount ?? 0 else { continue }
                let page = listView?.document.page(at: i)
                if (page?.isImagePage() == true) {
                    isContainsImagePage = true
                    break
                }
            }
            
            if isContainsImagePage {
                if OCRComponentAlert.superview == nil {
                    OCRComponentAlert.frame = CGRect(x: 0, y: 0, width: listView?.frame.width ?? 0, height: 40.0)
                    OCRComponentAlert.autoresizingMask = .width
                    self.view.addSubview(OCRComponentAlert)
                }
                OCRComponentAlert.reloadData()
            } else {
                if OCRComponentAlert.superview != nil {
                    OCRComponentAlert.removeFromSuperview()
                }
            }
        } else {
            if OCRComponentAlert.superview != nil {
                OCRComponentAlert.removeFromSuperview()
            }
        }
     }

    public func reloadAlertUIFrame() {
        var alertHeight = 0.0
        
        if digitalComponentAlert.superview != nil {
            digitalComponentAlert.frame = CGRect(x: 0, y: alertHeight, width: listView?.frame.width ?? 0, height: 32.0)
            alertHeight += 32.0
        }
        
        if formComponentAlert.superview != nil {
            if alertHeight > 0 {
                alertHeight += 1
            }
            formComponentAlert.frame = CGRect(x: 0, y: alertHeight, width: listView?.frame.width ?? 0, height: 32.0)
            alertHeight += 32.0
        }
        
        if secureComponentAlert.superview != nil {
            if alertHeight > 0 {
                alertHeight += 1
            }
            secureComponentAlert.frame = CGRect(x: 0, y: alertHeight, width: listView?.frame.width ?? 0, height: 32.0)
            alertHeight += 32.0
        }
        
        if redactComponentAlert.superview != nil {
            if alertHeight > 0 {
                alertHeight += 1
            }
            redactComponentAlert.frame = CGRect(x: 0, y: alertHeight, width: listView?.frame.width ?? 0, height: 32.0)
            alertHeight += 32.0
        }
        
        if OCRComponentAlert.superview != nil {
            if alertHeight > 0 {
                alertHeight += 1
            }
            OCRComponentAlert.frame = CGRect(x: 0, y: alertHeight, width: listView?.frame.width ?? 0, height: 40.0)
            alertHeight += 40.0
        }
        
        if(alertHeight > 0) {
            var rect = self.view.frame
            rect.size.height = alertHeight
            rect.size.width = listView?.frame.size.width ?? 0
            rect.origin.y = (listView?.frame.size.height ?? 0) - alertHeight
            self.view.frame = rect
        } else {
            if self.view.superview != nil {
                self.view.removeFromSuperview()
            }
        }
    }
    
    func showInView(_ listView: CPDFListView?) {
        self.listView = listView
        self.view.frame = CGRect(x: 0, y: 0, width: listView?.frame.size.width ?? 0 , height: 0)
        self.view.autoresizingMask = [.width, .minYMargin]
        listView?.addSubview(self.view)
        
        reloadSecureAlertUI()
        reloadFormAlertUI()
        reloadDigitalAlertUI()
        reloadRedactAlertUI()
        reloadFormAlertUI()
        reloadOCRAlertUI()
    }
}

//MARK: - ComponentAlertDelegate
extension KMNAlertTipViewController: ComponentAlertDelegate {
     func componentAlertDidCloseButtonClick(inputView: ComponentAlert) {
         if inputView == formComponentAlert {
             isShowFormAlert = false
             reloadFormAlertUI()
         } else if inputView == secureComponentAlert {
             isShowSecureAlert = false
             reloadSecureAlertUI()
         } else if inputView == digitalComponentAlert {
             isShowDigitalAlert = false
             reloadDigitalAlertUI()
         } else if inputView == redactComponentAlert {
             isShowRedactAlert = false
             reloadRedactAlertUI()
         } else if inputView == OCRComponentAlert {
             isShowOCRAlert = false
             reloadOCRAlertUI()
         }
         
         reloadAlertUIFrame()
    }
    
    func componentAlertDidButtonClick(inputView: ComponentAlert, buttonIndex: Int) {
        if buttonIndex == 1 {
            if inputView == formComponentAlert {
                formFieldHighlightCallback?()

                let highlightFormFiled = CPDFKitConfig.sharedInstance().enableFormFieldHighlight()
                var detailButtonString = ""
                if highlightFormFiled {
                    detailButtonString = KMLocalizedString("Disable Highlight Effect")
                } else {
                    detailButtonString = KMLocalizedString("Highlight Form Fields")
                }
                formComponentAlert.properties.detailButtonString = detailButtonString
                formComponentAlert.reloadData()
            } else if inputView == secureComponentAlert {
                enterPasswordCallback?()
            } else if inputView == digitalComponentAlert {
                digitalDetailsCallback?()
            } else if inputView == redactComponentAlert {
                redactApplyCallback?()
            } else if inputView == OCRComponentAlert {
                OCRApplyCallback?()
            }
        }
    }
}