//
//  EPAboutUsViewController.swift
//  YuMi
//
//  Created by AI on 2025-01-28.
//

import UIKit
import SnapKit

/// About Us 页面
/// 展示应用图标和版本信息
class EPAboutUsViewController: BaseViewController {
    
    // MARK: - UI Components
    
    private lazy var appIconImageView: UIImageView = {
        let imageView = UIImageView()
        imageView.contentMode = .scaleAspectFit
        imageView.layer.cornerRadius = 20
        imageView.layer.masksToBounds = true
        // 获取应用图标
        if let iconName = Bundle.main.object(forInfoDictionaryKey: "CFBundleIconName") as? String {
            imageView.image = UIImage(named: iconName)
        } else if let icons = Bundle.main.object(forInfoDictionaryKey: "CFBundleIcons") as? [String: Any],
                  let primaryIcon = icons["CFBundlePrimaryIcon"] as? [String: Any],
                  let iconFiles = primaryIcon["CFBundleIconFiles"] as? [String],
                  let lastIcon = iconFiles.last {
            imageView.image = UIImage(named: lastIcon)
        } else {
            // 使用占位图标
            imageView.image = UIImage(named: "pi_app_logo_new_bg")
        }
        return imageView
    }()
    
    private lazy var appNameLabel: UILabel = {
        let label = UILabel()
        label.text = Bundle.main.object(forInfoDictionaryKey: "CFBundleDisplayName") as? String
            ?? Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String
            ?? "YuMi"
        label.textColor = .white
        label.font = .systemFont(ofSize: 24, weight: .bold)
        label.textAlignment = .center
        return label
    }()
    
    private lazy var versionLabel: UILabel = {
        let label = UILabel()
        let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? "1.0.0"
        let build = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") as? String ?? "1"
        label.text = "Version \(version) (\(build))"
        label.textColor = UIColor.white.withAlphaComponent(0.7)
        label.font = .systemFont(ofSize: 16)
        label.textAlignment = .center
        return label
    }()
    
    // MARK: - Lifecycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupNavigationBar()
        setupUI()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.setNavigationBarHidden(false, animated: animated)
    }
    
    // MARK: - Setup
    
    private func setupNavigationBar() {
        title = YMLocalizedString("EPEditSetting.AboutUs")
        
        // 配置导航栏外观（iOS 13+）
        let appearance = UINavigationBarAppearance()
        appearance.configureWithOpaqueBackground()
        appearance.backgroundColor = UIColor(hex: "#0C0527")
        appearance.titleTextAttributes = [
            .foregroundColor: UIColor.white,
            .font: UIFont.systemFont(ofSize: 18, weight: .medium)
        ]
        appearance.shadowColor = .clear // 移除底部分割线
        
        navigationController?.navigationBar.standardAppearance = appearance
        navigationController?.navigationBar.scrollEdgeAppearance = appearance
        navigationController?.navigationBar.compactAppearance = appearance
        navigationController?.navigationBar.tintColor = .white // 返回按钮颜色
        
        // 隐藏返回按钮文字，只保留箭头
        navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
    }
    
    private func setupUI() {
        view.backgroundColor = UIColor(hex: "#0C0527")
        
        // 创建容器视图
        let containerView = UIView()
        view.addSubview(containerView)
        
        // 添加 UI 组件到容器
        containerView.addSubview(appIconImageView)
        containerView.addSubview(appNameLabel)
        containerView.addSubview(versionLabel)
        
        // 布局容器（垂直居中）
        containerView.snp.makeConstraints { make in
            make.centerY.equalTo(view).offset(-50) // 稍微偏上
            make.leading.trailing.equalTo(view).inset(40)
        }
        
        // 应用图标
        appIconImageView.snp.makeConstraints { make in
            make.top.equalTo(containerView)
            make.centerX.equalTo(containerView)
            make.size.equalTo(100)
        }
        
        // 应用名称
        appNameLabel.snp.makeConstraints { make in
            make.top.equalTo(appIconImageView.snp.bottom).offset(24)
            make.leading.trailing.equalTo(containerView)
        }
        
        // 版本号
        versionLabel.snp.makeConstraints { make in
            make.top.equalTo(appNameLabel.snp.bottom).offset(12)
            make.leading.trailing.equalTo(containerView)
        }
    }
}

// MARK: - UIColor Extension

private extension UIColor {
    convenience init(hex: String) {
        let hex = hex.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
        var int: UInt64 = 0
        Scanner(string: hex).scanHexInt64(&int)
        let a, r, g, b: UInt64
        switch hex.count {
        case 3: // RGB (12-bit)
            (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
        case 6: // RGB (24-bit)
            (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
        case 8: // ARGB (32-bit)
            (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
        default:
            (a, r, g, b) = (1, 1, 1, 0)
        }
        
        self.init(
            red: CGFloat(r) / 255,
            green: CGFloat(g) / 255,
            blue: CGFloat(b) / 255,
            alpha: CGFloat(a) / 255
        )
    }
}