//
//  MBLocationManager.m
//  Hermes
//
//  Dynamic Settings.bundle loading based on:
//  http://stackoverflow.com/questions/510216/can-you-make-the-settings-in-settings-bundle-default-even-if-you-dont-open-the
//
//  Created by Brad Leege on 3/8/15.
//  Copyright (c) 2015 Mapbox. All rights reserved.
//

#import "MBLocationManager.h"
#import "CoreLocation/CoreLocation.h"

@interface MBLocationManager()

@property (atomic) CLLocationManager *locationManager;
@property (atomic) BOOL isBackground;

@end

@implementation MBLocationManager


static MBLocationManager *sharedManager = nil;

- (id) init {
    if (self = [super init]) {
        
        NSString *settingsBundle = [[NSBundle mainBundle] pathForResource:@"Settings" ofType:@"bundle"];
        if(!settingsBundle) {
            NSLog(@"Could not find Settings.bundle");
        } else {
            NSDictionary *settings = [NSDictionary dictionaryWithContentsOfFile:[settingsBundle stringByAppendingPathComponent:@"Root.plist"]];
            NSArray *preferences = [settings objectForKey:@"PreferenceSpecifiers"];
            NSMutableDictionary *defaultsToRegister = [[NSMutableDictionary alloc] initWithCapacity:[preferences count]];
            for(NSDictionary *prefSpecification in preferences) {
                NSString *key = [prefSpecification objectForKey:@"Key"];
                if(key && [[prefSpecification allKeys] containsObject:@"DefaultValue"]) {
                    [defaultsToRegister setObject:[prefSpecification objectForKey:@"DefaultValue"] forKey:key];
                }
            }
            
            [[NSUserDefaults standardUserDefaults] registerDefaults:defaultsToRegister];
        }
        
        _locationManager = [[CLLocationManager alloc] init];
        _locationManager.distanceFilter = 2;
        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        _locationManager.pausesLocationUpdatesAutomatically = YES;
        [_locationManager setDelegate:self];
    }
    return self;
}

+ (id)sharedManager {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedManager = [[self alloc] init];
    });
    return sharedManager;
}

- (BOOL) isAuthorizedStatusDetermined {
    return ([CLLocationManager authorizationStatus] != kCLAuthorizationStatusNotDetermined);
}

- (void) requestAlwaysAuthorization {
    if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
        [self.locationManager requestAlwaysAuthorization];
    } else {
        // This is iOS 7 or below so Starting Location Updates will trigger authorization request
        [self startUpdatingLocation];
    }
}

- (void) setBackgroundStatus:(BOOL)isBackground {
    self.isBackground = isBackground;
}

- (void) startUpdatingLocation {
    [self.locationManager startUpdatingLocation];
}

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

#pragma mark CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
    CLLocation *loc = (CLLocation *)[locations objectAtIndex:0];
    NSLog(@"didUpdateLocations() called  with %lu location in array.  First Location = %f, %f", (unsigned long)locations.count, loc.coordinate.latitude, loc.coordinate.longitude);
    
/**
    if (![[NSUserDefaults standardUserDefaults] boolForKey:@"mapbox_metrics_enabled_preference"]) {
        NSLog(@"Mapbox Metrics are not enabled, so return without sending in data.");
        return;
    }
    
    //  Iterate through locations to pass all data
    for (CLLocation *loc in locations) {
        NSMutableDictionary *evt = [[NSMutableDictionary alloc] init];
        [evt setValue:[[NSNumber alloc] initWithDouble:loc.coordinate.latitude] forKey:@"lat"];
        [evt setValue:[[NSNumber alloc] initWithDouble:loc.coordinate.longitude] forKey:@"lng"];
        [evt setValue:[[NSNumber alloc] initWithBool:_isBackground] forKey:@"isBackground"];
        [[MapboxEvents sharedManager] pushEvent:@"location" withAttributes:evt];
    }
*/
}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
    NSString *newStatus = nil;
    switch (status) {
        case kCLAuthorizationStatusNotDetermined:
            newStatus = @"User Hasn't Determined Yet";
            break;
        case kCLAuthorizationStatusRestricted:
            newStatus = @"Restricted and Can't Be Changed By User";
            break;
        case kCLAuthorizationStatusDenied:
            newStatus = @"User Explcitly Denied";
            [[MBLocationManager sharedManager] stopUpdatingLocation];
            break;
        case kCLAuthorizationStatusAuthorized:
            newStatus = @"User Has Authorized / Authorized Always";
            [[MBLocationManager sharedManager] startUpdatingLocation];
            break;
            //        case kCLAuthorizationStatusAuthorizedAlways:
            //            newStatus = @"Not Determined";
            //            break;
        case kCLAuthorizationStatusAuthorizedWhenInUse:
            newStatus = @"User Has Authorized When In Use Only";
            [[MBLocationManager sharedManager] startUpdatingLocation];
            break;
        default:
            newStatus = @"Unknown";
            break;
    }
    NSLog(@"MBLocationManager didChangeAuthorizationStatus() called.  New Status = %@", newStatus);
}

@end