using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Android;

public class GPSTool
{
    //GPS获取地址
    //成功返回：string[]{国，省，市} (数组中不允许有null)
    //失败返回：null
    public static void GetAddress(Action<string[]> callback) {
        #if UNITY_ANDROID
        Func<string[]> func = delegate() {
            using (var clsU3D = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
            using (var objCtx = clsU3D.GetStatic<AndroidJavaObject>("currentActivity"))
            using (var objGPSTool = new AndroidJavaClass("com.example.smartbowlib.GPSTool"))
            {
                string[] address = objGPSTool.CallStatic<string[]>("getAddress", objCtx);
                if (address != null) {
                    foreach (var item in address)
                        if (item == null) return null;
                }
                return address;
            }
        };
        List<string> permissions = new List<string>();
        permissions.Add(Permission.CoarseLocation);
        permissions.Add(Permission.FineLocation);
        for (int i = permissions.Count - 1; i >= 0; i--) {
            if (Permission.HasUserAuthorizedPermission(permissions[i])) permissions.RemoveAt(i);
        } 
        if (permissions.Count > 0) {
            var requestCB = new PermissionCallbacks();
            int needPermissionCount = permissions.Count;
            requestCB.PermissionGranted += (s) => {
                Debug.Log("用户同意" + s);
                needPermissionCount--;
                if (needPermissionCount == 0) callback.Invoke(func.Invoke());
            }; 
            requestCB.PermissionDenied += (s) => {
                Debug.Log("用户拒绝" + s);
            };
            requestCB.PermissionDeniedAndDontAskAgain += (s) => {
                Debug.Log("用户拒绝且要求不再询问" + s);
            };
            Permission.RequestUserPermissions(permissions.ToArray(), requestCB);
        } else {
            callback?.Invoke(func.Invoke());
        }
        #endif
    }
}