//
//  LocationHelper.m
//  RealEstateManagement
//
//  Created by Javen on 2016/10/10.
//  Copyright © 2016年 上海勾芒信息科技. All rights reserved.
//

#import "LocationHelper.h"
#import <CoreLocation/CoreLocation.h>

@interface LocationHelper ()<CLLocationManagerDelegate>
@property (nonatomic, strong) CLLocationManager *locationManager;

@end


@implementation LocationHelper

+ (LocationHelper *)shareInstance {
    static LocationHelper *helper = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        helper = [[LocationHelper alloc] init];
    });
    return helper;
}

- (void)getCityNameSuccess:(locationBlock)success failed:(locationBlock)failed {
    self.blockSuccess = success;
    self.blockFailed = failed;
    [self startLocation];
}

#pragma mark - 定位方法
//开始定位
- (void)startLocation {
    if ([CLLocationManager locationServicesEnabled]) {
        //        CLog(@"--------开始定位");
        self.locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;
        //控制定位精度,越高耗电量越
        self.locationManager.desiredAccuracy = kCLLocationAccuracyKilometer;
        // 总是授权
        [self.locationManager requestAlwaysAuthorization];
        self.locationManager.distanceFilter = 10.0f;
        [self.locationManager requestAlwaysAuthorization];
        [self.locationManager startUpdatingLocation];
    }
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
    if ([error code] == kCLErrorDenied) {
        if (self.blockFailed) {
            self.blockFailed(@"访问被拒绝");
        }
    }
    if ([error code] == kCLErrorLocationUnknown) {
        if (self.blockFailed) {
        self.blockFailed(@"无法获取位置信息");
        }
    }
}
//定位代理经纬度回调
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations {
    CLLocation *newLocation = locations[0];
    // 获取当前所在的城市名
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    //根据经纬度反向地理编译出地址信息
    WS(weakSelf);
    [geocoder reverseGeocodeLocation:newLocation
                   completionHandler:^(NSArray *array, NSError *error) {
                       if (array.count > 0) {
                           CLPlacemark *placemark = [array objectAtIndex:0];
                           //获取城市
                           NSString *city = placemark.locality;
//                           NSString *zipCode = placemark.postalCode;
                           if (!city) {
                               //四大直辖市的城市信息无法通过locality获得，只能通过获取省份的方法来获得（如果city为空，则可知为直辖市）
                               city = placemark.administrativeArea;
                           }
                           weakSelf.blockSuccess(city);
                       } else if (error == nil && [array count] == 0) {
                           NSLog(@"No results were returned.");
                       } else if (error != nil) {
                           NSLog(@"An error occurred = %@", error);
                       }
                   }];
    //系统会一直更新数据，直到选择停止更新，因为我们只需要获得一次经纬度即可，所以获取之后就停止更新
    [manager stopUpdatingLocation];
}


@end