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#import "MGLOfflineStorage_Private.h"
#import "MGLAccountManager_Private.h"
#import "MGLGeometry_Private.h"
#import "MGLOfflinePack_Private.h"
#import "MGLOfflineRegion_Private.h"
#import "MGLTilePyramidOfflineRegion.h"
#include <mbgl/util/string.hpp>
@interface MGLOfflineStorage ()
@property (nonatomic) mbgl::DefaultFileSource *mbglFileSource;
- (instancetype)initWithFileName:(NSString *)fileName NS_DESIGNATED_INITIALIZER;
@end
@implementation MGLOfflineStorage
+ (instancetype)sharedOfflineStorage {
static dispatch_once_t onceToken;
static MGLOfflineStorage *sharedOfflineStorage;
dispatch_once(&onceToken, ^{
sharedOfflineStorage = [[self alloc] initWithFileName:@"cache.db"];
});
return sharedOfflineStorage;
}
// This method can’t be called -init, because that selector has been marked
// unavailable in MGLOfflineStorage.h.
- (instancetype)initWithFileName:(NSString *)fileName {
if (self = [super init]) {
// Place the cache in a location specific to the application, so that
// packs downloaded by other applications don’t count toward this
// application’s limits.
// ~/Library/Application Support/tld.app.bundle.id/cache.db
NSURL *cacheDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSApplicationSupportDirectory
inDomain:NSUserDomainMask
appropriateForURL:nil
create:YES
error:nil];
cacheDirectoryURL = [cacheDirectoryURL URLByAppendingPathComponent:
[NSBundle mainBundle].bundleIdentifier];
[[NSFileManager defaultManager] createDirectoryAtURL:cacheDirectoryURL
withIntermediateDirectories:YES
attributes:nil
error:nil];
NSURL *cacheURL = [cacheDirectoryURL URLByAppendingPathComponent:fileName];
NSString *cachePath = cacheURL ? cacheURL.path : @"";
// Move the offline cache from v3.2.0-beta.1 to a location that can also
// be used for ambient caching.
NSString *legacyCacheFileName = @"offline.db";
#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
// ~/Documents/offline.db
NSArray *legacyPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *legacyCachePath = [legacyPaths.firstObject stringByAppendingPathComponent:legacyCacheFileName];
#elif TARGET_OS_MAC
// ~/Library/Caches/tld.app.bundle.id/offline.db
NSURL *legacyCacheDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSCachesDirectory
inDomain:NSUserDomainMask
appropriateForURL:nil
create:YES
error:nil];
legacyCacheDirectoryURL = [legacyCacheDirectoryURL URLByAppendingPathComponent:
[NSBundle mainBundle].bundleIdentifier];
[[NSFileManager defaultManager] createDirectoryAtURL:legacyCacheDirectoryURL
withIntermediateDirectories:YES
attributes:nil
error:nil];
NSURL *legacyCacheURL = [legacyCacheDirectoryURL URLByAppendingPathComponent:legacyCacheFileName];
NSString *legacyCachePath = legacyCacheURL ? legacyCacheURL.path : @"";
#endif
if (![[NSFileManager defaultManager] fileExistsAtPath:cachePath]) {
[[NSFileManager defaultManager] moveItemAtPath:legacyCachePath toPath:cachePath error:NULL];
}
_mbglFileSource = new mbgl::DefaultFileSource(cachePath.UTF8String, [NSBundle mainBundle].resourceURL.path.UTF8String);
// Observe for changes to the global access token (and find out the current one).
[[MGLAccountManager sharedManager] addObserver:self
forKeyPath:@"accessToken"
options:(NSKeyValueObservingOptionInitial |
NSKeyValueObservingOptionNew)
context:NULL];
}
return self;
}
- (void)dealloc {
[[MGLAccountManager sharedManager] removeObserver:self forKeyPath:@"accessToken"];
delete _mbglFileSource;
_mbglFileSource = nullptr;
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NS_DICTIONARY_OF(NSString *, id) *)change context:(__unused void *)context {
// Synchronize the file source’s access token with the global one in MGLAccountManager.
if ([keyPath isEqualToString:@"accessToken"] && object == [MGLAccountManager sharedManager]) {
NSString *accessToken = change[NSKeyValueChangeNewKey];
if (![accessToken isKindOfClass:[NSNull class]]) {
self.mbglFileSource->setAccessToken(accessToken.UTF8String);
}
}
}
- (void)addPackForRegion:(id <MGLOfflineRegion>)region withContext:(NSData *)context completionHandler:(MGLOfflinePackAdditionCompletionHandler)completion {
if (![region conformsToProtocol:@protocol(MGLOfflineRegion_Private)]) {
[NSException raise:@"Unsupported region type" format:
@"Regions of type %@ are unsupported.", NSStringFromClass([region class])];
return;
}
const mbgl::OfflineTilePyramidRegionDefinition regionDefinition = [(id <MGLOfflineRegion_Private>)region offlineRegionDefinition];
mbgl::OfflineRegionMetadata metadata(context.length);
[context getBytes:&metadata[0] length:metadata.size()];
self.mbglFileSource->createOfflineRegion(regionDefinition, metadata, [&, completion](std::exception_ptr exception, mbgl::optional<mbgl::OfflineRegion> mbglOfflineRegion) {
NSError *error;
if (exception) {
NSString *errorDescription = @(mbgl::util::toString(exception).c_str());
error = [NSError errorWithDomain:MGLErrorDomain code:-1 userInfo:errorDescription ? @{
NSLocalizedDescriptionKey: errorDescription,
} : nil];
}
if (completion) {
MGLOfflinePack *pack = mbglOfflineRegion ? [[MGLOfflinePack alloc] initWithMBGLRegion:new mbgl::OfflineRegion(std::move(*mbglOfflineRegion))] : nil;
dispatch_async(dispatch_get_main_queue(), [&, completion, error, pack](void) {
completion(pack, error);
});
}
});
}
- (void)removePack:(MGLOfflinePack *)pack withCompletionHandler:(MGLOfflinePackRemovalCompletionHandler)completion {
mbgl::OfflineRegion *mbglOfflineRegion = pack.mbglOfflineRegion;
[pack invalidate];
self.mbglFileSource->deleteOfflineRegion(std::move(*mbglOfflineRegion), [&, completion](std::exception_ptr exception) {
NSError *error;
if (exception) {
error = [NSError errorWithDomain:MGLErrorDomain code:-1 userInfo:@{
NSLocalizedDescriptionKey: @(mbgl::util::toString(exception).c_str()),
}];
}
if (completion) {
dispatch_async(dispatch_get_main_queue(), [&, completion, error](void) {
completion(error);
});
}
});
}
- (void)getPacksWithCompletionHandler:(MGLOfflinePackListingCompletionHandler)completion {
self.mbglFileSource->listOfflineRegions([&, completion](std::exception_ptr exception, mbgl::optional<std::vector<mbgl::OfflineRegion>> regions) {
NSError *error;
if (exception) {
error = [NSError errorWithDomain:MGLErrorDomain code:-1 userInfo:@{
NSLocalizedDescriptionKey: @(mbgl::util::toString(exception).c_str()),
}];
}
NSMutableArray *packs;
if (regions) {
packs = [NSMutableArray arrayWithCapacity:regions->size()];
for (mbgl::OfflineRegion ®ion : *regions) {
MGLOfflinePack *pack = [[MGLOfflinePack alloc] initWithMBGLRegion:new mbgl::OfflineRegion(std::move(region))];
[packs addObject:pack];
}
}
if (completion) {
dispatch_async(dispatch_get_main_queue(), [&, completion, error, packs](void) {
completion(packs, error);
});
}
});
}
- (void)setMaximumAllowedMapboxTiles:(uint64_t)maximumCount {
_mbglFileSource->setOfflineMapboxTileCountLimit(maximumCount);
}
@end
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