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LocationPermissionStrategy.m
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LocationPermissionStrategy.m
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//
// Created by Razvan Lung(long1eu) on 2019-02-15.
// Copyright (c) 2019 The Chromium Authors. All rights reserved.
//
#import "LocationPermissionStrategy.h"
#if PERMISSION_LOCATION
NSString *const UserDefaultPermissionRequestedKey = @"org.baseflow.permission_handler_apple.permission_requested";
@interface LocationPermissionStrategy ()
- (void) receiveActivityNotification:(NSNotification *)notification;
@end
@implementation LocationPermissionStrategy {
CLLocationManager *_locationManager;
PermissionStatusHandler _permissionStatusHandler;
PermissionGroup _requestedPermission;
}
- (instancetype)initWithLocationManager {
self = [super init];
if (self) {
_locationManager = [CLLocationManager new];
_locationManager.delegate = self;
}
return self;
}
- (PermissionStatus)checkPermissionStatus:(PermissionGroup)permission {
return [LocationPermissionStrategy permissionStatus:permission];
}
- (ServiceStatus)checkServiceStatus:(PermissionGroup)permission {
return [CLLocationManager locationServicesEnabled] ? ServiceStatusEnabled : ServiceStatusDisabled;
}
- (void)requestPermission:(PermissionGroup)permission completionHandler:(PermissionStatusHandler)completionHandler {
PermissionStatus status = [self checkPermissionStatus:permission];
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse && permission == PermissionGroupLocationAlways) {
BOOL alreadyRequested = [[NSUserDefaults standardUserDefaults] boolForKey:UserDefaultPermissionRequestedKey]; // check if already requested the permantent permission
if(alreadyRequested) {
completionHandler(status);
return;
}
} else if (status != PermissionStatusDenied) { // handles undetermined always permission and denied whenInUse permission
completionHandler(status);
return;
}
_permissionStatusHandler = completionHandler;
_requestedPermission = permission;
if (permission == PermissionGroupLocation) {
if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"] != nil) {
[_locationManager requestAlwaysAuthorization];
} else if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"] != nil) {
[_locationManager requestWhenInUseAuthorization];
} else {
[[NSException exceptionWithName:NSInternalInconsistencyException reason:@"To use location in iOS8 you need to define either NSLocationWhenInUseUsageDescription or NSLocationAlwaysUsageDescription in the app bundle's Info.plist file" userInfo:nil] raise];
}
} else if (permission == PermissionGroupLocationAlways) {
if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"] != nil) {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(receiveActivityNotification:) name:UIApplicationDidBecomeActiveNotification object:nil];
[_locationManager requestAlwaysAuthorization];
[[NSUserDefaults standardUserDefaults] setBool:TRUE forKey:UserDefaultPermissionRequestedKey];
} else {
[[NSException exceptionWithName:NSInternalInconsistencyException reason:@"To use location in iOS8 you need to define NSLocationAlwaysUsageDescription in the app bundle's Info.plist file" userInfo:nil] raise];
}
} else if (permission == PermissionGroupLocationWhenInUse) {
if ([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"] != nil) {
[_locationManager requestWhenInUseAuthorization];
} else {
[[NSException exceptionWithName:NSInternalInconsistencyException reason:@"To use location in iOS8 you need to define NSLocationWhenInUseUsageDescription in the app bundle's Info.plist file" userInfo:nil] raise];
}
}
}
- (void) receiveActivityNotification:(NSNotification *) notification {
CLAuthorizationStatus status;
if(@available(iOS 14.0, *)){
status = _locationManager.authorizationStatus;
} else {
status = [CLLocationManager authorizationStatus];
}
if ((_requestedPermission == PermissionGroupLocationAlways && status != kCLAuthorizationStatusAuthorizedAlways)) {
PermissionStatus permissionStatus = [LocationPermissionStrategy determinePermissionStatus:_requestedPermission authorizationStatus:status];
_permissionStatusHandler(permissionStatus);
}
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];
}
// {WARNING}
// This is called when the location manager is first initialized and raises the following situations:
// 1. When we first request [PermissionGroupLocationWhenInUse] and then [PermissionGroupLocationAlways]
// this will be called when the [CLLocationManager] is first initialized with
// [kCLAuthorizationStatusAuthorizedWhenInUse]. As a consequence we send back the result to early.
// 2. When we first request [PermissionGroupLocationWhenInUse] and then [PermissionGroupLocationAlways]
// and the user doesn't allow for [kCLAuthorizationStatusAuthorizedAlways] this method is not called
// at all.
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
if (status == kCLAuthorizationStatusNotDetermined) {
return;
}
if (_permissionStatusHandler == nil || @(_requestedPermission) == nil) {
return;
}
if ((_requestedPermission == PermissionGroupLocationAlways && status == kCLAuthorizationStatusAuthorizedWhenInUse)) {
return;
}
PermissionStatus permissionStatus = [LocationPermissionStrategy
determinePermissionStatus:_requestedPermission authorizationStatus:status];
_permissionStatusHandler(permissionStatus);
}
+ (PermissionStatus)permissionStatus:(PermissionGroup)permission {
CLAuthorizationStatus authorizationStatus = [CLLocationManager authorizationStatus];
PermissionStatus status = [LocationPermissionStrategy
determinePermissionStatus:permission authorizationStatus:authorizationStatus];
return status;
}
+ (PermissionStatus)determinePermissionStatus:(PermissionGroup)permission authorizationStatus:(CLAuthorizationStatus)authorizationStatus {
if (@available(iOS 8.0, *)) {
if (permission == PermissionGroupLocationAlways) {
switch (authorizationStatus) {
case kCLAuthorizationStatusNotDetermined:
return PermissionStatusDenied;
case kCLAuthorizationStatusRestricted:
return PermissionStatusRestricted;
case kCLAuthorizationStatusAuthorizedWhenInUse:
case kCLAuthorizationStatusDenied:
return PermissionStatusPermanentlyDenied;
case kCLAuthorizationStatusAuthorizedAlways:
return PermissionStatusGranted;
}
}
switch (authorizationStatus) {
case kCLAuthorizationStatusNotDetermined:
return PermissionStatusDenied;
case kCLAuthorizationStatusRestricted:
return PermissionStatusRestricted;
case kCLAuthorizationStatusDenied:
return PermissionStatusPermanentlyDenied;
case kCLAuthorizationStatusAuthorizedWhenInUse:
case kCLAuthorizationStatusAuthorizedAlways:
return PermissionStatusGranted;
}
}
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
switch (authorizationStatus) {
case kCLAuthorizationStatusNotDetermined:
return PermissionStatusDenied;
case kCLAuthorizationStatusRestricted:
return PermissionStatusRestricted;
case kCLAuthorizationStatusDenied:
return PermissionStatusPermanentlyDenied;
case kCLAuthorizationStatusAuthorized:
return PermissionStatusGranted;
default:
return PermissionStatusDenied;
}
#pragma clang diagnostic pop
}
@end
#else
@implementation LocationPermissionStrategy
@end
#endif