import UIKit
import AVFAudio
import AMapNaviKit

class AmapViewController: UIViewController {
    
    // MARK: - 必须声明为强引用
    private var driveManager: AMapNaviDriveManager!
    private var driveView: AMapNaviDriveView!
    private let speechSynthesizer = AVSpeechSynthesizer()
    
    private var startPoint: AMapNaviPoint!
    private var endPoint: AMapNaviPoint!
    // 自定义初始化方法
     init(startpos: String, endpos: String) {
         super.init(nibName: nil, bundle: nil)
         self.startPoint = AmapViewController.parseCoord(from: startpos)
         self.endPoint = AmapViewController.parseCoord(from: endpos)
         print("导航---------------------: \(startPoint) \(endPoint)")
     }
    // 解析 "lat,lng" -> AMapNaviPoint
    private static func parseCoord(from string: String) -> AMapNaviPoint? {
        let components = string.split(separator: ",")
        guard components.count == 2,
              let lng = Double(components[0]),
              let lat = Double(components[1]) else {
            print("❌ 无效坐标格式: \(string)")
            return nil
        }
        
        return AMapNaviPoint.location(withLatitude: lat, longitude: lng)
    }
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        setupAMapComponents()
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        
        // 页面即将消失时停止导航
        if driveManager != nil {
            driveManager.stopNavi()
            driveManager.allowsBackgroundLocationUpdates = false
        }
    }

    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        
        // 页面完全消失后清理资源
        cleanupResources()
    }
    
    private func cleanupResources() {
        print("开始清理导航资源")
        
        // 停止语音合成
        speechSynthesizer.stopSpeaking(at: .immediate)
        
        // 如果导航管理器存在，进行清理
        if let manager = driveManager {
            // 停止导航
            manager.stopNavi()
            
            // 禁用后台定位
            manager.allowsBackgroundLocationUpdates = false
            
            // 清理代理
            manager.delegate = nil
        
            // 如果视图存在，移除数据代表
            if let view = driveView {
                manager.removeDataRepresentative(view)
                view.delegate = nil
                view.removeFromSuperview()
            }
        }
        
        // 销毁单例实例（关键步骤）
        AMapNaviDriveManager.destroyInstance()
        
        // 清空引用
        driveManager = nil
        driveView = nil
        
        print("导航资源清理完成")
    }
    
    private func setupAMapComponents() {
        self.addNSNotification();
        // 1. 初始化 DriveView（必须在主线程）
//        print("导航------------------  setupAMapComponents_1")
        DispatchQueue.main.async {
//            print("导航------------------  setupAMapComponents_2")
            self.driveView = AMapNaviDriveView(frame: self.view.bounds)
//            print("导航------------------  setupAMapComponents_3")
            self.driveView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
//            print("导航------------------  setupAMapComponents_4")
            self.driveView.delegate = self
//            print("导航------------------  setupAMapComponents_5")
            self.view.addSubview(self.driveView)
//            print("导航------------------  setupAMapComponents_6")
            
            // 2. 初始化 DriveManager
            self.driveManager = AMapNaviDriveManager.sharedInstance()
//            print("导航------------------  setupAMapComponents_7")
            self.driveManager.delegate = self
//            print("导航------------------  setupAMapComponents_8")
            self.driveManager.allowsBackgroundLocationUpdates = true
//            print("导航------------------  setupAMapComponents_9")
            
            // 3. 确保对象非空再关联
            if let manager = self.driveManager, let view = self.driveView {
//                print("导航------------------  setupAMapComponents_10")
                manager.addDataRepresentative(view)
//                print("导航------------------  setupAMapComponents_11")
                self.startNavigation()
//                print("导航------------------  setupAMapComponents_12")
            } else {
                print("Error: driveManager or driveView is nil")
            }
//            print("导航------------------  setupAMapComponents_13")
        }
    }
    
    private func startNavigation() {
//        print("导航------------------  startNavigation_1")
//        let startPoint  = AMapNaviPoint.location(withLatitude: 39.989614, longitude: 116.481763)!
//        print("导航------------------  startNavigation_2")
//        let endPoint = AMapNaviPoint.location(withLatitude: 39.983456, longitude: 116.315495)!
//        print("导航------------------  startNavigation_3")
        
        driveManager.calculateDriveRoute(
            withStart: [startPoint],
            end: [endPoint],
            wayPoints: nil,
            drivingStrategy: .drivingStrategySingleDefault
        )
        print("导航------------------  startNavigation_4")
    }
    
    @objc private func exitNavigation() {
        print("导航------------------  退出导航，清理资源")
        // 停止导航
        driveManager.stopNavi()
        driveManager.removeDataRepresentative(driveView)
        driveManager.delegate = nil
        
        // 移除导航视图
        driveView.delegate = nil
        driveView.removeFromSuperview()
        driveView = nil
        
        // 销毁导航管理器
        driveManager = nil
        
        // 关闭当前页面 - 修复：使用正确的退出方式
        if let navigationController = navigationController {
            // 如果是在导航控制器中，使用 pop
            navigationController.popViewController(animated: true)
        } else {
            // 如果是 present 出来的，使用 dismiss
            dismiss(animated: true, completion: nil)
        }
    }
    private func addNSNotification(){
        NotificationCenter.default.addObserver(
            forName: NSNotification.Name("ExitNavigation"),
            object: nil,
            queue: .main
        ) { _ in
            self.exitNavigation()
        }
    }
}

// MARK: - 代理方法
extension AmapViewController: AMapNaviDriveViewDelegate, AMapNaviDriveManagerDelegate {
    //View回调
    func driveViewCloseButtonClicked(_ driveView: AMapNaviDriveView) {
        print("导航界面关闭按钮被点击")
        
        // 1. 立即停止所有导航相关服务
        driveManager?.stopNavi()
        driveManager?.allowsBackgroundLocationUpdates = false
        
        // 2. 清理视图和代理关系
        driveManager?.removeDataRepresentative(driveView)
        driveManager?.delegate = nil
        driveView.delegate = nil
        
        // 3. 从视图层次结构中移除
        driveView.removeFromSuperview()
        
        // 4. 停止语音合成
        speechSynthesizer.stopSpeaking(at: .immediate)
        
        // 5. 销毁导航管理器实例
        AMapNaviDriveManager.destroyInstance()
        
        // 6. 清空引用
        driveManager = nil
        
        // 7. 立即退出，不使用延迟
        if let navigationController = navigationController {
            navigationController.popViewController(animated: true)
        } else {
            dismiss(animated: true, completion: nil)
        }
    }
    
    func driveView(_ driveView: AMapNaviDriveView, didChange showMode: AMapNaviDriveViewShowMode) {
        print("导航界面显示模式改变：\(showMode.rawValue)")
    }
    
    func driveView(_ driveView: AMapNaviDriveView, didChange trackMode: AMapNaviViewTrackingMode) {
        print("导航界面跟随模式改变：\(trackMode.rawValue)")
    }
    
    func driveView(_ driveView: AMapNaviDriveView, didChangeOrientation isLandscape: Bool) {
        print("导航界面横竖屏切换：isLandscape = \(isLandscape)")
    }
    
    func driveView(_ driveView: AMapNaviDriveView, didChangeDayNightType showStandardNightType: Bool) {
        print("导航界面白天/黑夜模式切换：isNight = \(showStandardNightType)")
    }
    
    func driveViewEdgePadding(_ driveView: AMapNaviDriveView) -> UIEdgeInsets {
        // 你可以根据自己 UI 布局返回合适的内边距，防止遮挡
        let padding = UIEdgeInsets(top: 100, left: 50, bottom: 80, right: 60)
        print("请求导航界面可视区域边距：\(padding)")
        return padding
    }
    
    //导航回调
    func driveManager(_ driveManager: AMapNaviDriveManager, error: Error) {
        print("导航------------------  ❌ 发生错误: \(error.localizedDescription)")
    }

    func driveManager(onCalculateRouteSuccess driveManager: AMapNaviDriveManager){
        print("导航------------------ ✅ 路线规划成功（旧方法）")
        driveManager.startGPSNavi()
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onCalculateRouteSuccessWith type: AMapNaviRoutePlanType) {
        print("导航------------------ 路径规划成功，类型: \(type.rawValue)")
        driveManager.startGPSNavi()
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onCalculateRouteFailure error: Error) {
        print("导航------------------ ❌ 路线规划失败: \(error.localizedDescription)")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onCalculateRouteFailure error: Error, routePlanType type: AMapNaviRoutePlanType) {
        print("导航------------------ ❌ 路线规划失败（新方法）: \(error.localizedDescription)，类型: \(type.rawValue)")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, didStartNavi naviMode: AMapNaviMode) {
        print("导航------------------ 🚗 已开始导航，模式: \(naviMode.rawValue)")
    }

    func driveManagerNeedRecalculateRoute(forYaw driveManager: AMapNaviDriveManager) {
        print("导航------------------ 出现偏航，需要重新计算路径")
    }

    func driveManagerNeedRecalculateRoute(forTrafficJam driveManager: AMapNaviDriveManager) {
        print("导航------------------ 遇到拥堵，重新规划路线")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onArrivedWayPoint wayPointIndex: Int) {
        print("导航------------------ 到达途经点索引：\(wayPointIndex)")
    }

    func driveManagerIsNaviSoundPlaying(_ driveManager: AMapNaviDriveManager) -> Bool {
        print("导航------------------ 🔊 正在判断是否在播报语音")
        return false  // 如果你有 TTS 系统播报时需返回 true
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, playNaviSound soundString: String, soundStringType: AMapNaviSoundType) {
        print("导航------------------ 📢 导航播报: \(soundString)，类型: \(soundStringType.rawValue)")
        // 示例：使用 AVSpeechSynthesizer 播放语音
        let utterance = AVSpeechUtterance(string: soundString)
        utterance.voice = AVSpeechSynthesisVoice(language: "zh-CN")
        speechSynthesizer.speak(utterance)
    }

    func driveManagerDidEndEmulatorNavi(_ driveManager: AMapNaviDriveManager) {
        print("导航------------------ 🛑 模拟导航结束")
    }

    func driveManager(onArrivedDestination driveManager: AMapNaviDriveManager) {
        print("导航------------------ 🎯 到达目的地")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onNaviPlay ringType: AMapNaviRingType) {
        print("导航------------------ 🔔 播放提示音，类型: \(ringType.rawValue)")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, update gpsSignalStrength: AMapNaviGPSSignalStrength) {
        print("导航------------------ 📡 GPS信号强度: \(gpsSignalStrength.rawValue)")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, postRouteNotification notifyData: AMapNaviRouteNotifyData) {
        print("导航------------------ 📌 路线通知信息: \(notifyData)")
    }

    func driveManager(_ driveManager: AMapNaviDriveManager, onSuggestChangeMainNaviRoute suggestChangeMainNaviRouteInfo: AMapNaviSuggestChangeMainNaviRouteInfo) {
        print("导航------------------ 🔄 建议切换主导航路线: \(suggestChangeMainNaviRouteInfo)")
    }
}