//
//  KMTableView.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/11/16.
//

import Cocoa

/*
 @protocol SKTableViewDelegate <NSTableViewDelegate>

 - (NSArray *)tableView:(NSTableView *)aTableView typeSelectHelperSelectionStrings:(SKTypeSelectHelper *)aTypeSelectHelper;
 - (void)tableView:(NSTableView *)aTableView typeSelectHelper:(SKTypeSelectHelper *)aTypeSelectHelper didFailToFindMatchForSearchString:(NSString *)searchString;
 - (void)tableView:(NSTableView *)aTableView typeSelectHelper:(SKTypeSelectHelper *)aTypeSelectHelper updateSearchString:(NSString *)searchString;

 @end
 */

@objc protocol KMBotaTableViewDelegate: NSTableViewDelegate {
    @objc optional func tableView(_ aTableView: NSTableView, deleteRowsWithIndexes rowIndexes: IndexSet)
    @objc optional func tableView(_ aTableView: NSTableView, canDeleteRowsWithIndexes rowIndexes: IndexSet) -> Bool
    
    @objc optional func tableView(_ aTableView: NSTableView, copyRowsWithIndexes rowIndexes: IndexSet)
    @objc optional func tableView(_ aTableView: NSTableView, canCopyRowsWithIndexes rowIndexes: IndexSet) -> Bool
    
    @objc optional func tableView(_ aTableView: NSTableView, pasteFromPasteboard pboard: NSPasteboard)
    @objc optional func tableView(_ aTableView: NSTableView, canPasteFromPasteboard pboard: NSPasteboard) -> Bool
    
    @objc optional func tableViewMoveLeft(_ aTableView: NSTableView)
    @objc optional func tableViewMoveRight(_ aTableView: NSTableView)
    
    @objc optional func tableView(_ aTableView: NSTableView, imageContextForRow rowIndex: Int) -> AnyObject?
}

class KMBotaTableView: NSTableView {
    var kmTrackingAreas: NSMutableSet?
    
    /*
     @interface SKTableView : NSTableView <SKTypeSelectDelegate> {
         SKTypeSelectHelper *typeSelectHelper;
     }
     @property (nonatomic) supportsQuickLook;
     @property (nonatomic, retain) SKTypeSelectHelper *typeSelectHelper;
     */
    
    weak var botaDelegate: KMBotaTableViewDelegate? {
        didSet {
            self._rebuildTrackingAreas()
        }
    }
    
    var hasImageToolTips: Bool {
        get {
            return self.kmTrackingAreas != nil
        }
        set {
            if self.kmTrackingAreas == nil && newValue {
                self.kmTrackingAreas = NSMutableSet()
                if self.window != nil {
                    self._rebuildTrackingAreas()
                }
            } else if self.kmTrackingAreas != nil && newValue == false {
                if self.window != nil {
                    self._removeTrackingAreas()
                }
            }
        }
    }
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        // Drawing code here.
    }
    
    override func reloadData() {
        super.reloadData()
        
        self._rebuildTrackingAreas()
//        [typeSelectHelper rebuildTypeSelectSearchCache];
    }
    
    // MARK: - Tracking
    
    override func updateTrackingAreas() {
        super.updateTrackingAreas()
        
        self._rebuildTrackingAreas()
    }
    
    override func noteNumberOfRowsChanged() {
        super.noteNumberOfRowsChanged()
        
        self._rebuildTrackingAreas()
    }
    
    override func mouseEntered(with event: NSEvent) {
        if (self.kmTrackingAreas == nil) {
            return
        }
        
//        let userInfo = event.userData as? [String : Any]
        let userInfo = event.trackingArea?.userInfo as? [String : Any]
        let row = userInfo?["row"] as? Int
        if row != nil {
            let context = self.botaDelegate?.tableView?(self, imageContextForRow: row!)
            if context is KMImageToolTipContext {
                KMImageToolTipWindow.shared.showForImageContext(context as! KMImageToolTipContext, at: .zero)
            }
        }
    }
    
    override func mouseExited(with event: NSEvent) {
        if (self.kmTrackingAreas == nil) {
            return
        }
        
        let userInfo = event.userData as? [String : Any]
        let row = userInfo?["row"] as? Int
        if row != nil {
            KMImageToolTipWindow.shared.fadeOut()
        }
    }
    
    func scrollToBeginningOfDocument(_ sender: AnyObject?) {
        if self.numberOfRows > 0 {
            self.scrollRowToVisible(0)
        }
    }
    
    func scrollToEndOfDocument(_ sender: AnyObject?) {
        if self.numberOfRows > 0 {
            self.scrollRowToVisible(self.numberOfRows-1)
        }
    }
    
    func moveLeft(_ sender: AnyObject?) {
        self.botaDelegate?.tableViewMoveLeft?(self)
    }

    func moveRight(_ sender: AnyObject?) {
        self.botaDelegate?.tableViewMoveRight?(self)
    }
    
    func canDelete() -> Bool {
        let indexes = self.selectedRowIndexes
        if indexes.isEmpty {
            return false
        }
        
        return self.botaDelegate?.tableView?(self, canDeleteRowsWithIndexes: indexes) ?? false
    }
    
    @objc func delete(_ sender: AnyObject?) {
        if self.canDelete() {
            self.botaDelegate?.tableView?(self, deleteRowsWithIndexes: self.selectedRowIndexes)
        }
    }
    
    func canCopy() -> Bool {
        let indexes = self.selectedRowIndexes
        if indexes.isEmpty {
            return false
        }
        
        return self.botaDelegate?.tableView?(self, canCopyRowsWithIndexes: indexes) ?? false
    }
    
    @objc func copy(_ sender: AnyObject?) {
        if self.canCopy() {
            self.botaDelegate?.tableView?(self, copyRowsWithIndexes: self.selectedRowIndexes)
        }
    }
    
    func canPaste() -> Bool {
        return self.botaDelegate?.tableView?(self, canPasteFromPasteboard: NSPasteboard.general) ?? false
    }
    
    @objc func paste(_ sender: AnyObject?) {
        if self.canPaste() {
            self.botaDelegate?.tableView?(self, pasteFromPasteboard: NSPasteboard.general)
        }
    }
    
    override func keyDown(with event: NSEvent) {
//        let eventChar = event.PDFListViewFirstCharacter()
//        let modifierFlags = event.deviceIndependen
//        NSUInteger modifierFlags = [theEvent deviceIndependentModifierFlags];
//
//        if ((eventChar == NSNewlineCharacter || eventChar == NSEnterCharacter || eventChar == NSCarriageReturnCharacter) && modifierFlags == 0) {
//            if ([self doubleAction] == NULL || [self sendAction:[self doubleAction] to:[self target]] == NO)
//                NSBeep();
//        } else if ((eventChar == NSDeleteCharacter || eventChar == NSDeleteFunctionKey) && modifierFlags == 0 && [self canDelete]) {
//            [self delete:self];
//        } else if ((eventChar == SKSpaceCharacter) && modifierFlags == 0) {
//            if (supportsQuickLook == NO)
//                [[self enclosingScrollView] pageDown:nil];
//            else if ([QLPreviewPanel sharedPreviewPanelExists] && [[QLPreviewPanel sharedPreviewPanel] isVisible])
//                [[QLPreviewPanel sharedPreviewPanel] orderOut:nil];
//            else
//                [[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFront:nil];
//        } else if ((eventChar == SKSpaceCharacter) && modifierFlags == NSShiftKeyMask) {
//            if (supportsQuickLook == NO)
//                [[self enclosingScrollView] pageUp:nil];
//        } else if (eventChar == NSHomeFunctionKey && (modifierFlags & ~NSFunctionKeyMask) == 0) {
//            [self scrollToBeginningOfDocument:nil];
//        } else if (eventChar == NSEndFunctionKey && (modifierFlags & ~NSFunctionKeyMask) == 0) {
//            [self scrollToEndOfDocument:nil];
//        } else if (eventChar == NSLeftArrowFunctionKey && modifierFlags == 0) {
//            [self moveLeft:nil];
//        } else if (eventChar == NSRightArrowFunctionKey && modifierFlags == 0) {
//            [self moveRight:nil];
//        } else if ([typeSelectHelper handleEvent:theEvent] == NO) {
//            [super keyDown:theEvent];
//        }
        
        super.keyDown(with: event)
    }
    
    override var font: NSFont? {
        get {
            for tc in self.tableColumns {
                if let cell = tc.dataCell as? NSCell {
                    if cell.type == .textCellType {
                        return cell.font
                    }
                }
            }
            return nil
        }
        set {
            for tc in self.tableColumns {
                if let cell = tc.dataCell as? NSCell {
                    if cell.type == .textCellType {
                        cell.font = newValue
                    }
                }
            }
            
            var rowHeight = font?.defaultViewLineHeight() ?? 34
            if self.selectionHighlightStyle == .sourceList {
                rowHeight += 2.0
            }
            self.rowHeight = rowHeight
            self.noteHeightOfRows(withIndexesChanged: IndexSet(0..<self.numberOfRows))
        }
    }
    
    /*
     - (void)setTypeSelectHelper:(SKTypeSelectHelper *)newTypeSelectHelper {
         if (typeSelectHelper != newTypeSelectHelper) {
             if ([typeSelectHelper delegate] == self)
                 [typeSelectHelper setDelegate:nil];
             [typeSelectHelper release];
             typeSelectHelper = [newTypeSelectHelper retain];
             [typeSelectHelper setDelegate:self];
         }
     }

     - (NSImage *)dragImageForRowsWithIndexes:(NSIndexSet *)dragRows tableColumns:(NSArray *)tableColumns event:(NSEvent *)dragEvent offset:(NSPointPointer)dragImageOffset{
            return [super dragImageForRowsWithIndexes:dragRows tableColumns:[[self tableColumns] subarrayWithRange:NSMakeRange(0, 1)] event:dragEvent offset:dragImageOffset];
     }

     #pragma mark SKTypeSelectHelper datasource protocol

     - (NSArray *)typeSelectHelperSelectionStrings:(SKTypeSelectHelper *)aTypeSelectHelper {
         if ([[self delegate] respondsToSelector:@selector(tableView:typeSelectHelperSelectionStrings:)])
             return [[self delegate] tableView:self typeSelectHelperSelectionStrings:aTypeSelectHelper];
         return nil;
     }

     - (NSUInteger)typeSelectHelperCurrentlySelectedIndex:(SKTypeSelectHelper *)aTypeSelectHelper {
         return [[self selectedRowIndexes] lastIndex];
     }

     - (void)typeSelectHelper:(SKTypeSelectHelper *)aTypeSelectHelper selectItemAtIndex:(NSUInteger)itemIndex {
         [self selectRowIndexes:[NSIndexSet indexSetWithIndex:itemIndex] byExtendingSelection:NO];
         [self scrollRowToVisible:itemIndex];
     }

     - (void)typeSelectHelper:(SKTypeSelectHelper *)aTypeSelectHelper didFailToFindMatchForSearchString:(NSString *)searchString {
         if ([[self delegate] respondsToSelector:@selector(tableView:typeSelectHelper:didFailToFindMatchForSearchString:)])
             [[self delegate] tableView:self typeSelectHelper:aTypeSelectHelper didFailToFindMatchForSearchString:searchString];
     }

     - (void)typeSelectHelper:(SKTypeSelectHelper *)aTypeSelectHelper updateSearchString:(NSString *)searchString {
         if ([[self delegate] respondsToSelector:@selector(tableView:typeSelectHelper:updateSearchString:)])
             [[self delegate] tableView:self typeSelectHelper:aTypeSelectHelper updateSearchString:searchString];
     }

     */
    
    
}

// MARK: - Private Methods

extension KMBotaTableView {
    private func _rebuildTrackingAreas() {
        if self.kmTrackingAreas == nil {
            return
        }
        
        let context = self.botaDelegate?.tableView?(self, imageContextForRow: 0)
        if context == nil {
            return
        }
        
        self._removeTrackingAreas()
        if self.window != nil {
            let visibleRect = self.visibleRect
            let rowRange = self.rows(in: visibleRect)
            var row: UInt = 0
            for i in rowRange.location ..< NSMaxRange(rowRange) {
                self._addTrackingAreaForRow(Int(i))
            }
        }
    }
    
    private func _removeTrackingAreas() {
        if (self.kmTrackingAreas == nil) {
            return
        }
        
        for area in self.kmTrackingAreas! {
            self.removeTrackingArea(area as! NSTrackingArea)
        }
        self.kmTrackingAreas?.removeAllObjects()
    }
    
    private func _addTrackingAreaForRow(_ row: Int) {
        if (self.kmTrackingAreas == nil) {
            return
        }
        let userInfo = ["row" : row]
        let area = NSTrackingArea(rect: self.rect(ofRow: row), options: [.mouseEnteredAndExited, .activeInActiveApp], owner: self, userInfo: userInfo)
        self.addTrackingArea(area)
        self.kmTrackingAreas?.add(area)
    }
    
    /*

     */
    
}

extension KMBotaTableView: NSMenuItemValidation {
    func validateMenuItem(_ menuItem: NSMenuItem) -> Bool {
        if menuItem.action == #selector(delete) {
            return self.canDelete()
        } else if menuItem.action == KMSelectorCopy {
            return self.canCopy()
        } else if menuItem.action == #selector(paste) {
            return self.canPaste()
        } else if menuItem.action == #selector(selectAll) {
            return self.allowsMultipleSelection
        } else if menuItem.action == #selector(deselectAll) {
            return self.allowsEmptySelection
        }

//        else if ([[SKTableView superclass] instancesRespondToSelector:@selector(validateMenuItem:)])
//            return [super validateMenuItem:menuItem];
        
        return true
    }
}