//
//  MoreMenuBarButton.swift
//  Note
//
//  Created by fish on 2026/7/12.
//

import SwiftUI

struct MoreMenuBarButton: UIViewRepresentable {
    @Binding var text: String
    @Binding var showCopied: Bool

    func makeUIView(context: Context) -> UIView {
        let button = makeGlassButton()
        button.menu = context.coordinator.makeMenu()
        button.showsMenuAsPrimaryAction = true

        let barButtonItem = UIBarButtonItem(customView: button)
        context.coordinator.barButtonItem = barButtonItem
        context.coordinator.button = button

        return button
    }

    func updateUIView(_ uiView: UIView, context: Context) {
        context.coordinator.button?.menu = context.coordinator.makeMenu()
    }

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    private func makeGlassButton() -> UIButton {
        let button = UIButton(type: .system)
        button.setImage(UIImage(systemName: "ellipsis"), for: .normal)
        button.tintColor = UIColor.label
        button.frame = CGRect(x: 0, y: 0, width: 44, height: 44)
        button.layer.cornerRadius = 22
        button.clipsToBounds = true

        let blurEffect = UIBlurEffect(style: .systemUltraThinMaterial)
        let blurView = UIVisualEffectView(effect: blurEffect)
        blurView.frame = button.bounds
        blurView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        blurView.isUserInteractionEnabled = false
        button.insertSubview(blurView, at: 0)

        return button
    }

    class Coordinator {
        var parent: MoreMenuBarButton
        weak var barButtonItem: UIBarButtonItem?
        weak var button: UIButton?

        init(_ parent: MoreMenuBarButton) {
            self.parent = parent
        }

        func makeMenu() -> UIMenu {
            let copyAction = UIAction(
                title: "复制",
                image: UIImage(systemName: "doc.on.doc"),
                attributes: parent.text.isEmpty ? .disabled : [],
                handler: { [weak self] _ in
                    UIPasteboard.general.string = self?.parent.text ?? ""
                    self?.parent.showCopied = true
                    DispatchQueue.main.asyncAfter(deadline: .now() + 1.5) {
                        self?.parent.showCopied = false
                    }
                }
            )

            let clearAction = UIAction(
                title: "清除",
                image: UIImage(systemName: "xmark.circle"),
                attributes: parent.text.isEmpty ? [.disabled, .destructive] : .destructive,
                handler: { [weak self] _ in
                    self?.parent.text = ""
                }
            )

            return UIMenu(title: "", children: [copyAction, clearAction])
        }
    }
}