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/* location-corelocation.m -- CoreLocation (OSX) location provider source
This file is part of Redshift.
Redshift is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Redshift is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Redshift. If not, see <http://www.gnu.org/licenses/>.
Copyright (c) 2014 Jon Lund Steffensen <jonlst@gmail.com>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
#include "location-corelocation.h"
#include "redshift.h"
#include <stdio.h>
#ifdef ENABLE_NLS
# include <libintl.h>
# define _(s) gettext(s)
#else
# define _(s) s
#endif
@interface Delegate : NSObject <CLLocationManagerDelegate>
@property (strong, nonatomic) CLLocationManager *locationManager;
@property (nonatomic) BOOL success;
@property (nonatomic) float latitude;
@property (nonatomic) float longitude;
@end
@implementation Delegate;
- (void)start
{
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
CLAuthorizationStatus authStatus =
[CLLocationManager authorizationStatus];
if (authStatus != kCLAuthorizationStatusNotDetermined &&
authStatus != kCLAuthorizationStatusAuthorized) {
fputs(_("Not authorized to obtain location"
" from CoreLocation.\n"), stderr);
CFRunLoopStop(CFRunLoopGetCurrent());
}
[self.locationManager startUpdatingLocation];
}
- (void)stop
{
[self.locationManager stopUpdatingLocation];
CFRunLoopStop(CFRunLoopGetCurrent());
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations
{
CLLocation *newLocation = [locations firstObject];
self.latitude = newLocation.coordinate.latitude;
self.longitude = newLocation.coordinate.longitude;
self.success = YES;
[self stop];
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error
{
fprintf(stderr, _("Error obtaining location from CoreLocation: %s\n"),
[[error localizedDescription] UTF8String]);
[self stop];
}
- (void)locationManager:(CLLocationManager *)manager
didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
if (status == kCLAuthorizationStatusNotDetermined) {
fputs(_("Waiting for authorization to obtain location...\n"),
stderr);
} else if (status != kCLAuthorizationStatusAuthorized) {
fputs(_("Request for location was not authorized!\n"),
stderr);
[self stop];
}
}
@end
int
location_corelocation_init(void *state)
{
return 0;
}
int
location_corelocation_start(void *state)
{
return 0;
}
void
location_corelocation_free(void *state)
{
}
void
location_corelocation_print_help(FILE *f)
{
fputs(_("Use the location as discovered by the Corelocation provider.\n"), f);
fputs("\n", f);
fprintf(f, _("NOTE: currently Redshift doesn't recheck %s once started,\n"
"which means it has to be restarted to take notice after travel.\n"),
"CoreLocation");
fputs("\n", f);
}
int
location_corelocation_set_option(void *state,
const char *key, const char *value)
{
fprintf(stderr, _("Unknown method parameter: `%s'.\n"), key);
return -1;
}
int
location_corelocation_get_location(void *state,
location_t *location)
{
int result = -1;
@autoreleasepool {
Delegate *delegate = [[Delegate alloc] init];
[delegate performSelectorOnMainThread:@selector(start) withObject:nil waitUntilDone:NO];
CFRunLoopRun();
if (delegate.success) {
location->lat = delegate.latitude;
location->lon = delegate.longitude;
result = 0;
}
}
return result;
}
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