/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

#import "RCTTVView.h"

#import "RCTAutoInsetsProtocol.h"
#import "RCTBorderDrawing.h"
#import "RCTBridge.h"
#import "RCTConvert.h"
#import "RCTEventDispatcher.h"
#import "RCTLog.h"
#import "RCTRootViewInternal.h"
#import "RCTTVNavigationEventEmitter.h"
#import "RCTUtils.h"
#import "RCTView.h"
#import "UIView+React.h"

@implementation RCTTVView {
UITapGestureRecognizer *_selectRecognizer;
}

- (instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
dispatch_once(&onceToken, ^{
defaultTVParallaxProperties = @{
@"enabled" : @YES,
@"shiftDistanceX" : @2.0f,
@"shiftDistanceY" : @2.0f,
@"tiltAngle" : @0.05f,
@"magnification" : @1.0f,
@"pressMagnification" : @1.0f,
@"pressDuration" : @0.3f,
@"pressDelay" : @0.0f
};
});
self.tvParallaxProperties = defaultTVParallaxProperties;
}

return self;
}

static NSDictionary *defaultTVParallaxProperties = nil;
static dispatch_once_t onceToken;

- (void)setTvParallaxProperties:(NSDictionary *)tvParallaxProperties
{
if (_tvParallaxProperties == nil) {
_tvParallaxProperties = [defaultTVParallaxProperties copy];
return;
}

NSMutableDictionary *newParallaxProperties = [NSMutableDictionary dictionaryWithDictionary:_tvParallaxProperties];
for (NSString *k in [defaultTVParallaxProperties allKeys]) {
if (tvParallaxProperties[k]) {
newParallaxProperties[k] = tvParallaxProperties[k];
}
}
_tvParallaxProperties = [newParallaxProperties copy];
}

RCT_NOT_IMPLEMENTED(-(instancetype)initWithCoder : unused)

- (void)setIsTVSelectable:(BOOL)isTVSelectable
{
self->_isTVSelectable = isTVSelectable;
if (isTVSelectable) {
UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(handleSelect:)];
recognizer.allowedPressTypes = @[ @(UIPressTypeSelect) ];
_selectRecognizer = recognizer;
[self addGestureRecognizer:_selectRecognizer];
} else {
if (_selectRecognizer) {
[self removeGestureRecognizer:_selectRecognizer];
}
}
}

- (void)handleSelect:(__unused UIGestureRecognizer *)r
{
if ([self.tvParallaxProperties[@"enabled"] boolValue] == YES) {
float magnification = [self.tvParallaxProperties[@"magnification"] floatValue];
float pressMagnification = [self.tvParallaxProperties[@"pressMagnification"] floatValue];

// Duration of press animation
float pressDuration = [self.tvParallaxProperties[@"pressDuration"] floatValue];

// Delay of press animation
float pressDelay = [self.tvParallaxProperties[@"pressDelay"] floatValue];

[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:pressDelay]];

[UIView animateWithDuration:(pressDuration / 2)
animations:^{
self.transform = CGAffineTransformMakeScale(pressMagnification, pressMagnification);
}
completion:^(__unused BOOL finished1) {
[UIView animateWithDuration:(pressDuration / 2)
animations:^{
self.transform = CGAffineTransformMakeScale(magnification, magnification);
}
completion:^(__unused BOOL finished2) {
[[NSNotificationCenter defaultCenter]
postNotificationName:RCTTVNavigationEventNotification
object:@{@"eventType" : @"select", @"tag" : self.reactTag}];
}];
}];

} else {
[[NSNotificationCenter defaultCenter] postNotificationName:RCTTVNavigationEventNotification
object:@{@"eventType" : @"select", @"tag" : self.reactTag}];
}
}

- (BOOL)isUserInteractionEnabled
{
return YES;
}

- (BOOL)canBecomeFocused
{
return (self.isTVSelectable);
}

- (void)addParallaxMotionEffects
{
// Size of shift movements
CGFloat const shiftDistanceX = [self.tvParallaxProperties[@"shiftDistanceX"] floatValue];
CGFloat const shiftDistanceY = [self.tvParallaxProperties[@"shiftDistanceY"] floatValue];

// Make horizontal movements shift the centre left and right
UIInterpolatingMotionEffect *xShift =
[[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.x"
type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis];
xShift.minimumRelativeValue = @(shiftDistanceX * -1.0f);
xShift.maximumRelativeValue = @(shiftDistanceX);

// Make vertical movements shift the centre up and down
UIInterpolatingMotionEffect *yShift =
[[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.y"
type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];
yShift.minimumRelativeValue = @(shiftDistanceY * -1.0f);
yShift.maximumRelativeValue = @(shiftDistanceY);

// Size of tilt movements
CGFloat const tiltAngle = [self.tvParallaxProperties[@"tiltAngle"] floatValue];

// Now make horizontal movements effect a rotation about the Y axis for side-to-side rotation.
UIInterpolatingMotionEffect *xTilt =
[[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"layer.transform"
type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis];

// CATransform3D value for minimumRelativeValue
CATransform3D transMinimumTiltAboutY = CATransform3DIdentity;
transMinimumTiltAboutY.m34 = 1.0 / 500;
transMinimumTiltAboutY = CATransform3DRotate(transMinimumTiltAboutY, tiltAngle * -1.0, 0, 1, 0);

// CATransform3D value for minimumRelativeValue
CATransform3D transMaximumTiltAboutY = CATransform3DIdentity;
transMaximumTiltAboutY.m34 = 1.0 / 500;
transMaximumTiltAboutY = CATransform3DRotate(transMaximumTiltAboutY, tiltAngle, 0, 1, 0);

// Set the transform property boundaries for the interpolation
xTilt.minimumRelativeValue = [NSValue valueWithCATransform3D:transMinimumTiltAboutY];
xTilt.maximumRelativeValue = [NSValue valueWithCATransform3D:transMaximumTiltAboutY];

// Now make vertical movements effect a rotation about the X axis for up and down rotation.
UIInterpolatingMotionEffect *yTilt =
[[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"layer.transform"
type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];

// CATransform3D value for minimumRelativeValue
CATransform3D transMinimumTiltAboutX = CATransform3DIdentity;
transMinimumTiltAboutX.m34 = 1.0 / 500;
transMinimumTiltAboutX = CATransform3DRotate(transMinimumTiltAboutX, tiltAngle * -1.0, 1, 0, 0);

// CATransform3D value for minimumRelativeValue
CATransform3D transMaximumTiltAboutX = CATransform3DIdentity;
transMaximumTiltAboutX.m34 = 1.0 / 500;
transMaximumTiltAboutX = CATransform3DRotate(transMaximumTiltAboutX, tiltAngle, 1, 0, 0);

// Set the transform property boundaries for the interpolation
yTilt.minimumRelativeValue = [NSValue valueWithCATransform3D:transMinimumTiltAboutX];
yTilt.maximumRelativeValue = [NSValue valueWithCATransform3D:transMaximumTiltAboutX];

// Add all of the motion effects to this group
self.motionEffects = @[ xShift, yShift, xTilt, yTilt ];

float magnification = [self.tvParallaxProperties[@"magnification"] floatValue];

[UIView animateWithDuration:0.2
animations:^{
self.transform = CGAffineTransformMakeScale(magnification, magnification);
}];
}

- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context
withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
if (context.nextFocusedView == self && self.isTVSelectable) {
[self becomeFirstResponder];
[coordinator
addCoordinatedAnimations:^(void) {
if ([self.tvParallaxProperties[@"enabled"] boolValue]) {
[self addParallaxMotionEffects];
}
[[NSNotificationCenter defaultCenter]
postNotificationName:RCTTVNavigationEventNotification
object:@{@"eventType" : @"focus", @"tag" : self.reactTag}];
}
completion:^(void){
}];
} else {
[coordinator
addCoordinatedAnimations:^(void) {
[[NSNotificationCenter defaultCenter] postNotificationName:RCTTVNavigationEventNotification
object:@{@"eventType" : @"blur", @"tag" : self.reactTag}];
[UIView animateWithDuration:0.2
animations:^{
self.transform = CGAffineTransformMakeScale(1, 1);
}];

for (UIMotionEffect *effect in [self.motionEffects copy]) {
[self removeMotionEffect:effect];
}
}
completion:^(void){
}];
[self resignFirstResponder];
}
}

- (void)setHasTVPreferredFocus:(BOOL)hasTVPreferredFocus
{
_hasTVPreferredFocus = hasTVPreferredFocus;
if (hasTVPreferredFocus) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
UIView *rootview = self;
while (![rootview isReactRootView] && rootview != nil) {
rootview = [rootview superview];
}
if (rootview == nil)
return;

rootview = [rootview superview];

[rootview setNeedsFocusUpdate];
[rootview updateFocusIfNeeded];
});
}
}

@end