//
//  PunchNetWebView.swift
//  punchnet
//
//  Created by 安礼成 on 2026/3/20.
//


import SwiftUI
import WebKit

// MARK: - 1. 核心 WebView 包装器 (带进度监听)
struct PunchNetWebView: NSViewRepresentable {
    let url: URL
    @Binding var progress: Double
    @Binding var isLoading: Bool

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

    func makeNSView(context: Context) -> WKWebView {
        let webView = WKWebView()
        webView.navigationDelegate = context.coordinator
        
        // 添加进度监听 (KVO)
        context.coordinator.observation = webView.observe(\.estimatedProgress, options: [.new]) { wv, _ in
            DispatchQueue.main.async {
                self.progress = wv.estimatedProgress
            }
        }
        
        let request = URLRequest(url: url)
        webView.load(request)
        return webView
    }

    func updateNSView(_ nsView: WKWebView, context: Context) {
        
    }

    // 协调器处理加载状态
    class Coordinator: NSObject, WKNavigationDelegate {
        var parent: PunchNetWebView
        var observation: NSKeyValueObservation?

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

        func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
            DispatchQueue.main.async { self.parent.isLoading = true }
        }

        func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
            DispatchQueue.main.async {
                withAnimation(.easeInOut(duration: 0.5)) {
                    self.parent.isLoading = false
                }
            }
        }
    }
}