/*
* 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 "RCTSliderManager.h"

#import "RCTBridge.h"
#import "RCTEventDispatcher.h"
#import "RCTSlider.h"
#import "UIView+React.h"

@implementation RCTSliderManager

RCT_EXPORT_MODULE()

- (UIView *)view
{
RCTSlider *slider = [RCTSlider new];
[slider addTarget:self action:@selector(sliderValueChanged:) forControlEvents:UIControlEventValueChanged];
[slider addTarget:self
action:@selector(sliderTouchEnd:)
forControlEvents:(UIControlEventTouchUpInside | UIControlEventTouchUpOutside | UIControlEventTouchCancel)];
return slider;
}

static void RCTSendSliderEvent(RCTSlider *sender, BOOL continuous)
{
float value = sender.value;

if (sender.step > 0 && sender.step <= (sender.maximumValue - sender.minimumValue)) {
value =
MAX(sender.minimumValue,
MIN(sender.maximumValue,
sender.minimumValue + round((sender.value - sender.minimumValue) / sender.step) * sender.step));

[sender setValue:value animated:YES];
}

if (continuous) {
if (sender.onValueChange && sender.lastValue != value) {
sender.onValueChange(@{
@"value" : @(value),
});
}
} else {
if (sender.onSlidingComplete) {
sender.onSlidingComplete(@{
@"value" : @(value),
});
}
}

sender.lastValue = value;
}

- (void)sliderValueChanged:(RCTSlider *)sender
{
RCTSendSliderEvent(sender, YES);
}

- (void)sliderTouchEnd:(RCTSlider *)sender
{
RCTSendSliderEvent(sender, NO);
}

RCT_EXPORT_VIEW_PROPERTY(value, float);
RCT_EXPORT_VIEW_PROPERTY(step, float);
RCT_EXPORT_VIEW_PROPERTY(trackImage, UIImage);
RCT_EXPORT_VIEW_PROPERTY(minimumTrackImage, UIImage);
RCT_EXPORT_VIEW_PROPERTY(maximumTrackImage, UIImage);
RCT_EXPORT_VIEW_PROPERTY(minimumValue, float);
RCT_EXPORT_VIEW_PROPERTY(maximumValue, float);
RCT_EXPORT_VIEW_PROPERTY(minimumTrackTintColor, UIColor);
RCT_EXPORT_VIEW_PROPERTY(maximumTrackTintColor, UIColor);
RCT_EXPORT_VIEW_PROPERTY(onValueChange, RCTBubblingEventBlock);
RCT_EXPORT_VIEW_PROPERTY(onSlidingComplete, RCTDirectEventBlock);
RCT_EXPORT_VIEW_PROPERTY(thumbTintColor, UIColor);
RCT_EXPORT_VIEW_PROPERTY(thumbImage, UIImage);
RCT_CUSTOM_VIEW_PROPERTY(disabled, BOOL, RCTSlider)
{
if (json) {
view.enabled = !([RCTConvert BOOL:json]);
} else {
view.enabled = defaultView.enabled;
}
}

@end