gistfile1.m

//
//  FFVerifyLocationViewModel.m
//  Blitz
//
//  Created by Sunny Kang on 9/1/14.
//  Copyright (c) 2014 Blitz. All rights reserved.
//

#import "FFVerifyLocationViewModel.h"
#import <CoreLocation/CoreLocation.h>
#import <AddressBook/AddressBook.h>

@interface FFVerifyLocationViewModel() <CLLocationManagerDelegate>

@property (nonatomic, strong) CLLocationManager *locationManager;

@end


@implementation FFVerifyLocationViewModel

#pragma mark - external methods to call from view

- (void)verifyLocation {
    [self startSignificantChangeUpdates];
}


#pragma mark - internal location methods

- (void)startSignificantChangeUpdates
{
    if ([CLLocationManager locationServicesEnabled])
    {
        if (!self.locationManager)
            self.locationManager = [[CLLocationManager alloc] init];
        
        self.locationManager.delegate = self;
        [self.locationManager startMonitoringSignificantLocationChanges];
    }
}

- (void)stopSignificantChangesUpdates
{
    [self.locationManager stopUpdatingLocation];
    self.locationManager = nil;
}

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    CLLocation *location = [locations lastObject];
    
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    
    [geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
        CLPlacemark *placemark = placemarks[0];
        NSDictionary *addressDictionary = [placemark addressDictionary];
        self.city = addressDictionary[(NSString *)kABPersonAddressCityKey];
        self.state = addressDictionary[(NSString *)kABPersonAddressStateKey];
        self.country = placemark.country;
        
        self.isValidCity = YES;
    }];
    
    [self stopSignificantChangesUpdates];
}

@end