//
//  KMLinkViewController.swift
//  PDF Reader Pro
//
//  Created by Niehaoyu on 2024/10/18.
//

import Cocoa
import KMComponentLibrary

@objc public enum PDFLinkType: Int, CaseIterable{
    case Page = 0      //
    case Web           //
    case Email         //
}

@objc public enum PDFLinkPopupType: Int, CaseIterable{
    case None  = 0     //默认类型
    case Page          //
    case Web           //
    case Email         //
    case MultiSelect   //Popup弹窗
}

/**
 未选中注释：修改默认添加类型。
 选中注释：
 - 切换类型：判断类型->修改显示信息。
 - 输入文字：修改跳转内容。
 */

@objc protocol KMLinkViewControllerDelegate: AnyObject {
    
    @objc optional func kmLinkViewControllerDidUpdateMode(_ controller: KMLinkViewController)
}

//MARK: - KMLinkViewController
@objcMembers class KMLinkViewController: NSViewController {
    
    @IBOutlet var contendBox: NSBox!
    @IBOutlet var infoContendView: NSView!
    
    @IBOutlet var tabsBGView: NSView!
    @IBOutlet var tabsView: ComponentTabs!
    
    @IBOutlet var typeContendView: NSView!
    @IBOutlet var linkPageView: KMLinkPageView!
    @IBOutlet var linkEmailView: KMLinkEmailView!
    @IBOutlet var linkWebView: KMLinkWebView!
    
    @IBOutlet var emptyContendView: ComponentEmpty!
    
    private weak var _pdfView: CPDFListView? = nil
    
    private var annotations: [CPDFLinkAnnotation] = []
    private var current_Annotation: CPDFLinkAnnotation? = nil
    
    var multiController: KMNAlignmentController = KMNAlignmentController.init() //注释多选界面
    
    let pageProperty = ComponentTabsProperty(tabsType: .underline_Fill, state: .normal, showIcon: false, title: NSLocalizedString("Page", comment: ""))
    let webProperty = ComponentTabsProperty(tabsType: .underline_Fill, state: .normal, showIcon: false, title: NSLocalizedString("Web", comment: ""))
    let emailProperty = ComponentTabsProperty(tabsType: .underline_Fill, state: .normal, showIcon: false, title: NSLocalizedString("Email", comment: ""))
    
    weak open var delegate: KMLinkViewControllerDelegate?
    
    public override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        setUpUI()
        
    }
    
    func setUpUI() {
        
        contendBox.fillColor = ComponentLibrary.shared.getComponentColorFromKey("colorBg/layout-middle")
        
        
        tabsView.updateItemProperty([pageProperty, webProperty, emailProperty])
        tabsView.delegate = self
        
        linkPageView.delegate = self
        
        linkWebView.delegate = self
        
        linkEmailView.delegate = self
        
        multiController.delegate = self
        
        emptyContendView.properties = ComponentEmptyProperty(emptyType: .noLink,
                                                             text: KMLocalizedString("Add Link"),
                                                             subText: KMLocalizedString("Select an area or text on the page to add a link."))
    }
    
    
    //MARK: - Setter
    var pdfLinkType: PDFLinkType = .Page {
        didSet {
            view.window?.makeFirstResponder(nil)
        }
    }
    
    weak var pdfView: CPDFListView? {
        get {
            return _pdfView
        }
        set {
            _pdfView = newValue
        }
    }
    
    //MARK: - func
    public func reloadData() {
        guard let pdfView = self.pdfView else {
            return
        }
        
        typeContendView.isHidden = true
        emptyContendView.isHidden = true
        multiController.view.isHidden = true
        
        tabsBGView.isHidden = false
        
        let pdfAnnotations: [CPDFAnnotation] = pdfView.activeAnnotations as? [CPDFAnnotation] ?? []
        var linkAnnotations: [CPDFLinkAnnotation] = []
        for annotation in pdfAnnotations {
            if annotation is CPDFLinkAnnotation {
                linkAnnotations.append((annotation as! CPDFLinkAnnotation))
            }
        }
        annotations = linkAnnotations
        
        if annotations.count == 0 {
            emptyContendView.isHidden = false
            
            current_Annotation = nil
            linkPageView.clearData()
            linkWebView.clearData()
            linkEmailView.clearData()
            
        } else if annotations.count == 1 {
            
            if let annotation = annotations.first {
                if current_Annotation != annotation {
                    current_Annotation = annotation
                    
                    linkPageView.clearData()
                    linkWebView.clearData()
                    linkEmailView.clearData()
                }
            }
            
            multiController.view.isHidden = true
            typeContendView.isHidden = false
            
            linkPageView.isHidden = true
            linkEmailView.isHidden = true
            linkWebView.isHidden = true
            
            if let url = current_Annotation?.url() {
                if url.hasPrefix("mailto:") {
                    pdfLinkType = .Email
                } else {
                    pdfLinkType = .Web
                }
            } else if let _ = current_Annotation?.destination() {
                pdfLinkType = .Page
            }
            
            if pdfLinkType == .Page {
                linkPageView.isHidden = false
                linkPageView.pdfView = pdfView
                linkPageView.annotation = current_Annotation
                linkPageView.reloadData()
            } else if pdfLinkType == .Web {
                linkWebView.isHidden = false
                linkWebView.annotation = current_Annotation
            } else if pdfLinkType == .Email {
                linkEmailView.isHidden = false
                linkEmailView.annotation = current_Annotation
            }
            
        } else {
            multiController.view.frame = CGRectMake((CGRectGetWidth(infoContendView.frame) - 232)/2, CGRectGetHeight(infoContendView.frame)-112, 232, 112)
            multiController.view.autoresizingMask = [.width, .maxYMargin]
            infoContendView.addSubview(multiController.view)
            
            multiController.view.isHidden = false
            tabsBGView.isHidden = true
            
            if annotations.count > 2 {
                multiController.aligHorizontalXButton.properties.isDisabled = false
                multiController.aligVerticalYButton.properties.isDisabled = false
            } else {
                multiController.aligHorizontalXButton.properties.isDisabled = true
                multiController.aligVerticalYButton.properties.isDisabled = true
            }
            multiController.aligHorizontalXButton.reloadData()
            multiController.aligVerticalYButton.reloadData()
        }
        
        pageProperty.state = .normal
        webProperty.state = .normal
        emailProperty.state = .normal
        if pdfLinkType == .Page {
            pageProperty.state = .pressed
        } else if pdfLinkType == .Web {
            webProperty.state = .pressed
        } else if pdfLinkType == .Email {
            emailProperty.state = .pressed
        }
        tabsView.refreshItems()
        
    }
    
    func pdfLinkTypeChanged() {
        guard let _ = current_Annotation else {
            return
        }
        linkPageView.isHidden = true
        linkEmailView.isHidden = true
        linkWebView.isHidden = true
        
        if pdfLinkType == .Page {
            linkPageView.isHidden = false
            linkPageView.reloadData()
        } else if pdfLinkType == .Web {
            linkWebView.isHidden = false
        } else if pdfLinkType == .Email {
            linkEmailView.isHidden = false
        }
    }
    
    //MARK: - MouseEvent
    public override func mouseUp(with event: NSEvent) {
        super.mouseUp(with: event)
        
    }
    
}


//MARK: - ComponentTabsDelegate
extension KMLinkViewController: ComponentTabsDelegate {
    public func componentTabsDidSelected(_ view: ComponentTabs, _ property: ComponentTabsProperty) {
        if let annotation = current_Annotation {
            if property == pageProperty {
                pdfLinkType = .Page
                annotation.setURL(nil)
                
                if let page = pdfView?.document.page(at: UInt(linkPageView.choosedIndex-1)) {
                    let bounds = page.bounds(for: .cropBox)
                    let destination = CPDFDestination(page: page, at: NSPoint(x: 0, y: bounds.size.height))
                    annotation.setDestination(destination)
                }
                
            } else if property == webProperty {
                pdfLinkType = .Web
                annotation.setDestination(nil)
                
                let linkUrlPath = KMNTools.judgeWebURL(linkWebView.inputTextarea.properties.text)
                annotation.setURL(linkUrlPath)
                
            } else if property == emailProperty {
                pdfLinkType = .Email
                annotation.setDestination(nil)
                
                let linkUrlPath = KMNTools.judgeEmailURL(linkEmailView.inputTextarea.properties.text)
                annotation.setURL(linkUrlPath)
            }
            
            pdfLinkTypeChanged()
            
        }
        CPDFLinkAnnotation.updateDefault_AddLinkType(pdfLinkType.rawValue)
        
        delegate?.kmLinkViewControllerDidUpdateMode?(self)
        
    }
}

//MARK: - KMLinkPageViewDelegate
extension KMLinkViewController: KMLinkPageViewDelegate {
    func kmLinkPageViewDidGoToPage(_ view: KMLinkPageView, _ pageIndex: Int) {
        if let _ = pdfView?.document.page(at: UInt(pageIndex-1)) {
            pdfView?.go(toPageIndex: pageIndex-1, animated: false)
        }
    }
}

//MARK: - KMLinkPageViewDelegate
extension KMLinkViewController: KMLinkWebViewDelegate {
    func kmLinkWebViewDidGo(_ view: KMLinkWebView, _ webString: String) {
        guard let activeAnnotation = current_Annotation else {
            return
        }
        
        let linkUrlPath = KMNTools.judgeWebURL(webString)
        activeAnnotation.setURL(linkUrlPath)
        
        if let url = activeAnnotation.url() {
            if let data = URL(string: url) {
                NSWorkspace.shared.open(data)
            } else {
                let alert = NSAlert()
                alert.alertStyle = .critical
                alert.messageText = NSLocalizedString("Invalid URL. Please try again.", comment: "")
                alert.runModal()
            }
        } else {
            let alert = NSAlert()
            alert.alertStyle = .critical
            alert.messageText = NSLocalizedString("Invalid URL. Please try again.", comment: "")
            alert.runModal()
        }
    }
    
}

//MARK: - KMLinkEmailViewDelegate
extension KMLinkViewController: KMLinkEmailViewDelegate {
    func kmLinkEmailViewDidGo(_ view: KMLinkEmailView, _ emailString: String) {
        guard let activeAnnotation = current_Annotation else {
            return
        }
        
        if !KMNTools.isValidateEmail(emailString) {
            let alert = NSAlert()
            alert.alertStyle = .critical
            alert.messageText = NSLocalizedString("Invalid Email. Please try again.", comment: "")
            alert.runModal()
            return
        }
        
        if let url = activeAnnotation.url() {
            NSWorkspace.shared.open(URL(string: url)!)
        }
    }
    
}

//MARK: - KMNAlignmentControllerDelegate
extension KMLinkViewController: KMNAlignmentControllerDelegate {
    func alignmentControllerDidClick(_ controller: KMNAlignmentController, _ alignmentType: KMPDFActiveFormsAlignType) {
        
        pdfView?.change(annotations, alignmentType: alignmentType)
        
        pdfView?.setNeedsDisplayForVisiblePages()
        
    }
}


//MARK: - KMLinkViewController Class Method
extension KMLinkViewController {
    
}