import Flutter
import UIKit
import AMapNaviKit

/// 登录之后才允许创建会弹出系统权限框的对象。键和通知名与 AppDelegate 一致。
enum PostLoginHardware {
    static let readyKey = "sp_hardware_ready"
    static let armNote = Notification.Name("sp.hardware.arm")

    static func whenReady(_ body: @escaping () -> Void) {
        if UserDefaults.standard.bool(forKey: readyKey) {
            DispatchQueue.main.async(execute: body)
            return
        }
        var token: NSObjectProtocol?
        token = NotificationCenter.default.addObserver(
            forName: armNote, object: nil, queue: .main
        ) { _ in
            if let token { NotificationCenter.default.removeObserver(token) }
            body()
        }
    }
}

public class AmapServicePlugin: NSObject, FlutterPlugin, FlutterStreamHandler {
    private static var channel: FlutterMethodChannel?
    private var eventSink: FlutterEventSink?
    
    public static func register(with registrar: FlutterPluginRegistrar) {
        let methodChannel = FlutterMethodChannel(
            name: "com.yunqiinnovation.amap_service", 
            binaryMessenger: registrar.messenger()
        )
        
        let eventChannel = FlutterEventChannel(
            name: "com.yunqiinnovation.amap_service/events", 
            binaryMessenger: registrar.messenger()
        )
        
        let instance = AmapServicePlugin()
        eventChannel.setStreamHandler(instance)

        // 高德一初始化就会触发「查找本地网络中的设备」。延到登录之后。
        PostLoginHardware.whenReady {
            AMapServices.shared()?.apiKey = "6144a636c24dc9f2e1e57f7597849cf7"
            AMapServices.shared()?.enableHTTPS = true

            if #available(iOS 13.0, *) {
                AMapNaviManagerConfig.shared().updatePrivacyShow(.didShow, privacyInfo: .didContain)
                AMapNaviManagerConfig.shared().updatePrivacyAgree(.didAgree)
            }
            print("高德SDK初始化完成")
        }
        
        registrar.addMethodCallDelegate(instance, channel: methodChannel)
        self.channel = methodChannel
    }
    
    // MARK: - FlutterStreamHandler
    public func onListen(withArguments arguments: Any?, eventSink events: @escaping FlutterEventSink) -> FlutterError? {
        self.eventSink = events
        return nil
    }
    
    public func onCancel(withArguments arguments: Any?) -> FlutterError? {
        eventSink = nil
        return nil
    }
    
    // MARK: - 事件发送方法
    private func sendEvent(eventName: String, data: [String: Any]) {
        guard let sink = eventSink else { return }
        let eventData: [String: Any] = [
            "event": eventName,
            "data": data
        ]
        sink(eventData)
    }
    
    // MARK: - 方法处理
    public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
        switch call.method {
        case "open":
            guard let args = call.arguments as? [String: Any],
                  let startpos = args["startpos"] as? String,
                  let endpos = args["endpos"] as? String,
                  let ntype = args["ntype"] as? String else {
                result(FlutterError(code: "INVALID_ARGUMENT", message: "Missing arguments", details: nil))
                return
            }
            
            print("打开导航页面: \(startpos) → \(endpos)")
            DispatchQueue.main.async {
                let navVC = AmapViewController(startpos: startpos, endpos: endpos)
                navVC.modalPresentationStyle = .fullScreen
                UIApplication.shared.keyWindow?.rootViewController?.present(navVC, animated: true)
            }
            result(nil)
            
        case "start":
            guard let args = call.arguments as? [String: Any],
                  let startpos = args["startpos"] as? String,
                  let endpos = args["endpos"] as? String,
                  let ntype = args["ntype"] as? String else {
                result(FlutterError(code: "INVALID_ARGUMENT", message: "Missing arguments", details: nil))
                return
            }
            
            // 这里添加实际导航启动逻辑
            print("开始导航: \(startpos) → \(endpos), 类型: \(ntype)")
            sendEvent(eventName: "navigation_started", data: ["status": "success"])
            result(nil)
            
        case "stop":
            // 这里添加停止导航逻辑
            print("停止导航")
            sendEvent(eventName: "navigation_stopped", data: ["status": "success"])
            result(nil)
            
        default:
            result(FlutterMethodNotImplemented)
        }
    }
}