//
//  StatsPanel.swift
//  DynamicIsland
//
//  Created by GitHub Copilot on 13/08/25.
//

import AppKit
import SwiftUI

class StatsPanel: NSPanel {
    
    init() {
        super.init(
            contentRect: .zero,
            styleMask: [.borderless, .nonactivatingPanel],
            backing: .buffered,
            defer: true
        )
        
        setupWindow()
        setupContentView()
    }
    
    // Override to allow the panel to become key window (required for user interaction)
    override var canBecomeKey: Bool {
        return true
    }
    
    // Override to allow the panel to become main window (required for text input and controls)
    override var canBecomeMain: Bool {
        return true
    }
    
    private func setupWindow() {
        backgroundColor = .clear
        isOpaque = false
        hasShadow = true
        level = .floating
        isMovableByWindowBackground = true  // Enable dragging
        titlebarAppearsTransparent = true
        titleVisibility = .hidden
        isFloatingPanel = true  // Mark as floating panel for proper behavior
        
        // Allow dragging from any part of the window
        styleMask.insert(.fullSizeContentView)
        
        collectionBehavior = [
            .canJoinAllSpaces,
            .stationary,
            .fullScreenAuxiliary  // Float above full-screen apps
        ]
        
        // Accept mouse moved events for proper hover behavior
        acceptsMouseMovedEvents = true
    }
    
    private func setupContentView() {
        let contentView = StatsPanelView {
            self.close()
        }
        
        let hostingView = NSHostingView(rootView: contentView)
        self.contentView = hostingView
        
        // Set initial size
        let preferredSize = CGSize(width: 600, height: 400)
        hostingView.setFrameSize(preferredSize)
        setContentSize(preferredSize)
    }
    
    func positionNearNotch() {
        guard let screen = NSScreen.main else { return }
        
        let screenFrame = screen.visibleFrame
        let panelFrame = frame
        
        // Position at top center of screen (near where the notch would be)
        let xPosition = (screenFrame.width - panelFrame.width) / 2 + screenFrame.minX
        let yPosition = screenFrame.maxY - panelFrame.height - 10 // 10px from top
        
        setFrameOrigin(NSPoint(x: xPosition, y: yPosition))
    }
    
    func positionNearMouse() {
        let mouseLocation = NSEvent.mouseLocation
        let panelFrame = frame
        
        // Position near mouse but ensure it stays on screen
        guard let screen = NSScreen.main else { return }
        let screenFrame = screen.visibleFrame
        
        var xPosition = mouseLocation.x - panelFrame.width / 2
        var yPosition = mouseLocation.y - panelFrame.height - 20
        
        // Keep within screen bounds
        xPosition = max(screenFrame.minX + 10, min(xPosition, screenFrame.maxX - panelFrame.width - 10))
        yPosition = max(screenFrame.minY + 10, min(yPosition, screenFrame.maxY - panelFrame.height - 10))
        
        setFrameOrigin(NSPoint(x: xPosition, y: yPosition))
    }
}