#if TARGET_OS_IOS

#import "ASMapNode.h"

#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>

#import <AsyncDisplayKit/ASDisplayNodeExtras.h>

#import <AsyncDisplayKit/ASInsetLayoutSpec.h>

#import <AsyncDisplayKit/ASCenterLayoutSpec.h>

#import <AsyncDisplayKit/ASThread.h>

@interface ASMapNode()

{

ASDN::RecursiveMutex _propertyLock;

MKMapSnapshotter *_snapshotter;

NSArray *_annotations;

CLLocationCoordinate2D _centerCoordinateOfMap;

}

@implementation ASMapNode

@synthesize needsMapReloadOnBoundsChange = _needsMapReloadOnBoundsChange;

@synthesize mapDelegate = _mapDelegate;

@synthesize options = _options;

@synthesize liveMap = _liveMap;

#pragma mark - Lifecycle

- (instancetype)init

{

if (!(self = [super init])) {

return nil;

}

self.backgroundColor = ASDisplayNodeDefaultPlaceholderColor();

self.clipsToBounds = YES;

_needsMapReloadOnBoundsChange = YES;

_liveMap = NO;

_centerCoordinateOfMap = kCLLocationCoordinate2DInvalid;

return self;

}

- (void)didLoad

{

[super didLoad];

if (self.isLiveMap) {

self.userInteractionEnabled = YES;

[self addLiveMap];

}

}

- (void)setLayerBacked:(BOOL)layerBacked

{

ASDisplayNodeAssert(!self.isLiveMap, @"ASMapNode can not be layer backed whilst .liveMap = YES, set .liveMap = NO to use layer backing.");

[super setLayerBacked:layerBacked];

}

- (void)fetchData

{

[super fetchData];

if (self.isLiveMap) {

[self addLiveMap];

} else {

[self takeSnapshot];

}

}

- (void)clearContents

{

[super clearContents];

if (self.isLiveMap) {

[self removeLiveMap];

}

}

#pragma mark - Settings

- (BOOL)isLiveMap

{

ASDN::MutexLocker l(_propertyLock);

return _liveMap;

}

- (void)setLiveMap:(BOOL)liveMap

{

ASDisplayNodeAssert(!self.isLayerBacked, @"ASMapNode can not use the interactive map feature whilst .isLayerBacked = YES, set .layerBacked = NO to use the interactive map feature.");

ASDN::MutexLocker l(_propertyLock);

if (liveMap == _liveMap) {

return;

}

_liveMap = liveMap;

if (self.nodeLoaded) {

liveMap ? [self addLiveMap] : [self removeLiveMap];

}

}

- (BOOL)needsMapReloadOnBoundsChange

{

ASDN::MutexLocker l(_propertyLock);

return _needsMapReloadOnBoundsChange;

}

- (void)setNeedsMapReloadOnBoundsChange:(BOOL)needsMapReloadOnBoundsChange

{

ASDN::MutexLocker l(_propertyLock);

_needsMapReloadOnBoundsChange = needsMapReloadOnBoundsChange;

}

- (MKMapSnapshotOptions *)options

{

ASDN::MutexLocker l(_propertyLock);

if (!_options) {

_options = [[MKMapSnapshotOptions alloc] init];

_options.region = MKCoordinateRegionForMapRect(MKMapRectWorld);

CGSize calculatedSize = self.calculatedSize;

if (!CGSizeEqualToSize(calculatedSize, CGSizeZero)) {

_options.size = calculatedSize;

}

}

return _options;

}

- (void)setOptions:(MKMapSnapshotOptions *)options

{

ASDN::MutexLocker l(_propertyLock);

_options = options;

if (self.isLiveMap) {

[self applySnapshotOptions];

} else {

[self resetSnapshotter];

[self takeSnapshot];

}

}

- (MKCoordinateRegion)region

{

return self.options.region;

}

- (void)setRegion:(MKCoordinateRegion)region

{

self.options.region = region;

}

#pragma mark - Snapshotter

- (void)takeSnapshot

{

if (!_snapshotter) {

[self setUpSnapshotter];

}

[_snapshotter cancel];

[_snapshotter startWithCompletionHandler:^(MKMapSnapshot *snapshot, NSError *error) {

if (!error) {

UIImage *image = snapshot.image;

CGRect finalImageRect = CGRectMake(0, 0, image.size.width, image.size.height);

UIGraphicsBeginImageContextWithOptions(image.size, YES, image.scale);

[image drawAtPoint:CGPointMake(0, 0)];

if (_annotations.count > 0 ) {

// Get a standard annotation view pin. Future implementations should use a custom annotation image property.

MKAnnotationView *pin = [[MKPinAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:@""];

UIImage *pinImage = pin.image;

for (id<MKAnnotation>annotation in _annotations)

{

CGPoint point = [snapshot pointForCoordinate:annotation.coordinate];

if (CGRectContainsPoint(finalImageRect, point))

{

CGPoint pinCenterOffset = pin.centerOffset;

point.x -= pin.bounds.size.width / 2.0;

point.y -= pin.bounds.size.height / 2.0;

point.x += pinCenterOffset.x;

point.y += pinCenterOffset.y;

[pinImage drawAtPoint:point];

}

}

}

UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

self.image = finalImage;

}

}];

}

- (void)setUpSnapshotter

{

ASDisplayNodeAssert(!CGSizeEqualToSize(CGSizeZero, self.calculatedSize), @"self.calculatedSize can not be zero. Make sure that you are setting a preferredFrameSize or wrapping ASMapNode in a ASRatioLayoutSpec or similar.");

_snapshotter = [[MKMapSnapshotter alloc] initWithOptions:self.options];

}

- (void)resetSnapshotter

{

// FIXME: The semantics of this method / name would suggest that we cancel + destroy the snapshotter,

// but not that we create a new one. We should probably only create the new one in -takeSnapshot or something.

[_snapshotter cancel];

_snapshotter = [[MKMapSnapshotter alloc] initWithOptions:self.options];

}

- (void)applySnapshotOptions

{

MKMapSnapshotOptions *options = self.options;

[_mapView setCamera:options.camera animated:YES];

[_mapView setRegion:options.region animated:YES];

[_mapView setMapType:options.mapType];

_mapView.showsBuildings = options.showsBuildings;

_mapView.showsPointsOfInterest = options.showsPointsOfInterest;

}

#pragma mark - Actions

- (void)addLiveMap

{

ASDisplayNodeAssertMainThread();

if (!_mapView) {

__weak ASMapNode *weakSelf = self;

_mapView = [[MKMapView alloc] initWithFrame:CGRectZero];

_mapView.delegate = weakSelf.mapDelegate;

[weakSelf applySnapshotOptions];

[_mapView addAnnotations:_annotations];

[weakSelf setNeedsLayout];

[weakSelf.view addSubview:_mapView];

if (CLLocationCoordinate2DIsValid(_centerCoordinateOfMap)) {

[_mapView setCenterCoordinate:_centerCoordinateOfMap];

}

}

}

- (void)removeLiveMap

{

// FIXME: With MKCoordinateRegion, isn't the center coordinate fully specified? Do we need this?

_centerCoordinateOfMap = _mapView.centerCoordinate;

[_mapView removeFromSuperview];

_mapView = nil;

}

- (void)setAnnotations:(NSArray *)annotations

{

ASDN::MutexLocker l(_propertyLock);

_annotations = [annotations copy];

if (self.isLiveMap) {

[_mapView removeAnnotations:_mapView.annotations];

[_mapView addAnnotations:annotations];

} else {

[self takeSnapshot];

}

}

#pragma mark - Layout

- (void)setSnapshotSizeIfNeeded:(CGSize)snapshotSize

{

if (!CGSizeEqualToSize(self.options.size, snapshotSize)) {

_options.size = snapshotSize;

[self resetSnapshotter];

}

}

- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize

{

CGSize size = self.preferredFrameSize;

if (CGSizeEqualToSize(size, CGSizeZero)) {

size = constrainedSize;

}

[self setSnapshotSizeIfNeeded:size];

return constrainedSize;

}

- (void)layout

{

[super layout];

if (self.isLiveMap) {

_mapView.frame = CGRectMake(0.0f, 0.0f, self.calculatedSize.width, self.calculatedSize.height);

} else {

// If our bounds.size is different from our current snapshot size, then let's request a new image from MKMapSnapshotter.

if (_needsMapReloadOnBoundsChange) {

[self setSnapshotSizeIfNeeded:self.bounds.size];

// FIXME: Adding a check for FetchData here seems to cause intermittent map load failures, but shouldn't.

// if (ASInterfaceStateIncludesFetchData(self.interfaceState)) {

[self takeSnapshot];

}

}

}

#endif