cparam/ios/CParam/CParam.m

//
//  CParam.m
//  CParam
//
//  Created by breeze on 2017/6/20.
//  Copyright © 2017年 Breeze. All rights reserved.
//

#import "CParam.h"
#import <React/RCTBridge.h>
#import <React/RCTEventDispatcher.h>
#import "DataController.h"
#import "LocationManager.h"
#import <Foundation/NSTimer.h>

static CParam *_instance;

@interface CParam () <LocationManagerDelegate>

@property (nonatomic) bool hasListeners;

@property (nonatomic, strong) NSString *eventName;

@property (nonatomic, strong) NSTimer *timer;

@property (nonatomic, strong) NSDictionary *cparams;

@end

@implementation CParam

RCT_EXPORT_MODULE();

+(instancetype)allocWithZone:(struct _NSZone *)zone
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (_instance == nil) {
            _instance = [super allocWithZone:zone];
        }
    });
    return _instance;
}

+(instancetype)shareInstance {
    return [[self alloc] init];
}
// 为了严谨，也要重写copyWithZone 和 mutableCopyWithZone
-(id)copyWithZone:(NSZone *)zone {
    return _instance;
}
-(id)mutableCopyWithZone:(NSZone *)zone {
    return _instance;
}


- (void)dealloc {
    if (_timer.valid) {
        [_timer invalidate];
    }
}

+ (BOOL)requiresMainQueueSetup {
    return YES;
}

- (instancetype)init {
    if (self = [super init]) {
//        [LocationManager shareInstance].delegate = self;
//
//        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//            [[LocationManager shareInstance] startUpdatingLocation];
//        });
//
//        self.timer = [NSTimer scheduledTimerWithTimeInterval: 300
//                                                      target: self
//                                                    selector: @selector(timeout)
//                                                    userInfo: nil
//                                                     repeats: YES];
    }
    
    return self;
}

- (void)timeout {
    [[LocationManager shareInstance] startUpdatingLocation];
}

- (NSString *)eventName {
    return @"GPS_UPDATE";
}

- (NSArray<NSString *> *)supportedEvents {
    return @[self.eventName];
}

- (NSDictionary<NSString *, id> *)constantsToExport {
    return @{@"GPSUpdateEventName": self.eventName};
}

// 在添加第一个监听函数时触发
-(void)startObserving {
    self.hasListeners = YES;
    // Set up any upstream listeners or background tasks as necessary
}

// Will be called when this module's last listener is removed, or on dealloc.
-(void)stopObserving {
    self.hasListeners = NO;
    // Remove upstream listeners, stop unnecessary background tasks
}


- (void)updateLocationWithCoordinate:(CLLocationCoordinate2D)coordinate {
    
    if (self.hasListeners) { // Only send events if anyone is listening
        NSNumber *latitude = [NSNumber numberWithFloat:coordinate.latitude];
        NSNumber *longitude = [NSNumber numberWithFloat:coordinate.longitude];
        [self sendEventWithName: self.eventName body:@{@"lat": latitude, @"lng": longitude}];
    }
}


RCT_EXPORT_METHOD(setNativeCparams: (nonnull NSDictionary *)cparams) {
    
    NSMutableDictionary *resDict = [[NSMutableDictionary alloc] init];
    for (NSString *key in cparams) {
        id val = cparams[key];
        if (val) {
            [resDict setValue: val forKey: key];
        }
    }
    
    _cparams = [resDict copy];
}

- (NSDictionary *)cparams {
    return _cparams;
}


@end