//
//  KMCropController.swift
//  PDF Reader Pro
//
//  Created by Niehaoyu on 2024/11/20.
//

import Cocoa
import KMComponentLibrary

@objc protocol KMCropControllerDelegate: AnyObject {
    
    @objc optional func kmCropControllerDidCrop(_ controller: KMCropController, _ cropRect: CGRect, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidCropSeparate(_ controller: KMCropController, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidCropAuto(_ controller: KMCropController, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidChangedSelectionOrMagnification(_ controller: KMCropController)
    
    @objc optional func kmCropControllerDidResetController(_ controller: KMCropController)
    
    @objc optional func kmCropControllerDidExitController(_ controller: KMCropController)
    
    @objc optional func kmCropControllerDidApplyController(_ controller: KMCropController)

}

class KMCropController: NSViewController {
    
    @IBOutlet var contendView: NSView!
    
    @IBOutlet var preInfoView: NSView!
    @IBOutlet var propertyInfoView: NSView!
    
    private var documentPreview: KMEditDocumentController = KMEditDocumentController.init()
    
    private var coverController: KMCropCoverController?
    
    var pdfView: CPDFListView? {
        get {
            return documentPreview.pdfView
        }
    }
    var pdfDocument: CPDFDocument?
    var selectionRect: CGRect = .zero
    
    weak open var delegate: KMCropControllerDelegate?
    
    private var groupListMenuGroup: ComponentGroup? = ComponentGroup.createFromNib(in: ComponentLibrary.shared.componentBundle())
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        setup()
    }
    
    func setup() {
        view.wantsLayer = true
        view.layer?.backgroundColor = ComponentLibrary.shared.getComponentColorFromKey("colorBg/layout-middle").cgColor
        
        documentPreview.view.frame = preInfoView.bounds
        documentPreview.view.autoresizingMask = [.width, .height]
        documentPreview.pdfView.pdfListViewDelegate = self
        documentPreview.pdfView.delegate = self
        preInfoView.addSubview(documentPreview.view)
        
        hiddenPropertyView(false)
    }
    
    func reloadData() {
        guard let pdfDocument = pdfDocument else {
            return
        }
        
        documentPreview.pdfDocument = pdfDocument
        documentPreview.reloadData()
        
        documentPreview.pdfView.toolMode = .CCropToolMode
        documentPreview.pdfView.selectionPageIndex = 0
        
        reloadSelectionRect()
    }
    
    func hiddenPropertyView(_ hidden: Bool) {
        
    }
    
    func reloadSelectionRect() {
        guard let pdfDocument = pdfDocument else {
            return
        }
        if CGRectEqualToRect(selectionRect, CGRectZero) {
            let page = pdfDocument.page(at: 0)
            let bounds = page?.bounds ?? CGRectZero
            
            selectionRect = bounds
        } else {
            
        }
        documentPreview.pdfView.selectionRect = selectionRect
        documentPreview.pdfView.selectionPageIndex = 0
        documentPreview.pdfView.setNeedsDisplayForVisiblePages()
    }
    
}

//MARK: - CPDFListViewDelegate
extension KMCropController: CPDFListViewDelegate {
    func pdfListViewChangedSelectionOrMagnification(_ pdfListView: CPDFListView!) {
        KMCropManager.defaultManager.cropSeparateOn = false
        KMCropManager.defaultManager.cropAutoOn = false
        KMCropManager.defaultManager.cropRect = pdfView?.selectionRect
        
        delegate?.kmCropControllerDidChangedSelectionOrMagnification?(self)
    }
    
    func pdfListViewDidSelectionEnd(_ pdfListView: CPDFListView!) {
        
    }
    
    func pdfListViewMenu(forEvent pdfListView: CPDFListView!, for theEvent: NSEvent!, click menu: AutoreleasingUnsafeMutablePointer<NSMenu?>!, isMoveSelectAnno: Bool) {
        let point = self.view.convert(theEvent.locationInWindow, from: self.view)
        
        var items: [(String, String)] = []
        items.append(("Apply", PDFViewMenuIdentifier_Edit_Apply))
        items.append(("Reset", PDFViewMenuIdentifier_Edit_Reset))
        items.append(("Exit", PDFViewMenuIdentifier_Edit_Exit))
        
        var viewHeight: CGFloat = 8
        var menuItemArr: [ComponentMenuitemProperty] = []
        
        for (i, value) in items {
            if value.count == 0 {
                let property: ComponentMenuitemProperty = ComponentMenuitemProperty.divider()
                menuItemArr.append(property)
                viewHeight += 8
            } else {
                let properties_Menuitem: ComponentMenuitemProperty = ComponentMenuitemProperty(multipleSelect: false,
                                                                                               itemSelected: false,
                                                                                               keyEquivalent: nil,
                                                                                               text: KMLocalizedString(i),
                                                                                               identifier: value,representedObject: point)
                menuItemArr.append(properties_Menuitem)
                if(value == PDFViewMenuIdentifier_Edit_Exit) {
                    properties_Menuitem.keyEquivalent = "ESC"
                }
                viewHeight += 36
            }
        }
        
        groupListMenuGroup?.pagePoint = point
        groupListMenuGroup?.groupDelegate = self
        groupListMenuGroup?.frame = CGRectMake(0, 0, 180, viewHeight)
        groupListMenuGroup?.updateGroupInfo(menuItemArr)
        
        groupListMenuGroup?.showWithPoint(CGPoint(x: point.x, y: point.y - viewHeight), relativeTo: nil, withWindow: pdfListView.window)

    }
    
    func pdfListViewIsSupportSelecton(_ theEvent: NSEvent!, mouseType: KMPDFViewMouseType) -> Bool {
        return true
    }

}

//MARK: - ComponentGroupDelegate
extension KMCropController: ComponentGroupDelegate {
    func componentGroupDidSelect(group: ComponentGroup?, menuItemProperty: ComponentMenuitemProperty?) {
        if menuItemProperty?.identifier == PDFViewMenuIdentifier_Edit_Apply {
            delegate?.kmCropControllerDidApplyController?(self)
        } else if (menuItemProperty?.identifier == PDFViewMenuIdentifier_Edit_Exit) {
            delegate?.kmCropControllerDidExitController?(self)
        } else if (menuItemProperty?.identifier == PDFViewMenuIdentifier_Edit_Reset) {
            delegate?.kmCropControllerDidResetController?(self)
        }
    }
}

extension KMCropController: CPDFViewDelegate {
    func pdfViewDocumentDidLoaded(_ pdfView: CPDFView!) {
        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.3) {
            self.reloadSelectionRect()
            
            self.delegate?.kmCropControllerDidChangedSelectionOrMagnification?(self)
        }
    }
}

//MARK: - KMCropPropertyControllerDelegate
extension KMCropController: KMCropPropertyControllerDelegate {
    func kmCropControllerDidCrop(_ controller: KMCropPropertyController, _ cropRect: CGRect, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCrop?(self, cropRect, view)
    }
    
    func kmCropControllerDidCropAuto(_ controller: KMCropPropertyController, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCropAuto?(self, view)
    }
    
    func kmCropControllerDidCropSeparate(_ controller: KMCropPropertyController, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCropSeparate?(self, view)
    }
    
    func kmCropControllerDidCropInfoUpdated(_ controller: KMCropPropertyController) {
        delegate?.kmCropControllerDidChangedSelectionOrMagnification?(self)
    }
}