//
//  EPProgressHUD.swift
//  YuMi
//
//  Created by AI on 2025-10-11.
//

import UIKit
import Foundation

/// 带进度的 Loading 组件（基于 MBProgressHUD）
@objc class EPProgressHUD: NSObject {
    
    private static var currentHUD: MBProgressHUD?
    
    /// 获取当前活跃的 window（兼容 iOS 13+）
    private static var keyWindow: UIWindow? {
        if #available(iOS 13.0, *) {
            return UIApplication.shared.connectedScenes
                .compactMap { $0 as? UIWindowScene }
                .flatMap { $0.windows }
                .first { $0.isKeyWindow }
        } else {
            return UIApplication.shared.keyWindow
        }
    }
    
    /// 显示上传进度
    /// - Parameters:
    ///   - uploaded: 已上传数量
    ///   - total: 总数量
    @objc static func showProgress(_ uploaded: Int, total: Int) {
        DispatchQueue.main.async {
            guard let window = keyWindow else { return }
            
            if let hud = currentHUD {
                // 更新现有 HUD
                hud.label.text = "上传中 \(uploaded)/\(total)"
                hud.progress = Float(uploaded) / Float(total)
            } else {
                // 创建新 HUD
                let hud = MBProgressHUD.showAdded(to: window, animated: true)
                hud.mode = .determinateHorizontalBar
                hud.label.text = "上传中 \(uploaded)/\(total)"
                hud.progress = Float(uploaded) / Float(total)
                hud.removeFromSuperViewOnHide = true
                currentHUD = hud
            }
        }
    }
    
    /// 关闭 HUD
    @objc static func dismiss() {
        DispatchQueue.main.async {
            guard let hud = currentHUD else { return }
            
            hud.hide(animated: true)
            currentHUD = nil
        }
    }
}