MiMO_iOS/MiMoLive/Classes/Live/View/LiveingView/FastGift/MORingCountdownView.m

//
//  MORingCountdownView.m
//  MiMoLive
//
//  Created by MiMo on 2025/7/27.
//

#import "MORingCountdownView.h"

@interface MORingCountdownView ()<CAAnimationDelegate>

@property (nonatomic, strong) CAShapeLayer *backgroundLayer;
@property (nonatomic, strong) CAShapeLayer *progressLayer;
@property (nonatomic, strong) CAGradientLayer *gradientLayer;

@property (nonatomic, assign) CFTimeInterval animationStartTime;
@property (nonatomic, assign) NSTimeInterval animationDuration;

@end

@implementation MORingCountdownView

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        _lineWidth = 2.0;
        _ringColor = [MOTools colorWithHexString:@"#FFD74A"];
        _backgroundRingColor = [UIColor whiteColor];
        [self setupLayers];
    }
    return self;
}

- (void)setupLayers {
    CGFloat lineWidth = self.lineWidth;
    CGPoint center = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
    CGFloat radius = (MIN(self.bounds.size.width, self.bounds.size.height) - lineWidth) / 2.0;

    UIBezierPath *circlePath = [UIBezierPath bezierPathWithArcCenter:center
                                                              radius:radius
                                                          startAngle:-M_PI_2
                                                            endAngle:(3 * M_PI_2)
                                                           clockwise:YES];

    // 背景渐变遮罩层路径
    self.backgroundLayer = [CAShapeLayer layer];
    self.backgroundLayer.path = circlePath.CGPath;
    self.backgroundLayer.strokeColor = self.backgroundRingColor.CGColor;
    self.backgroundLayer.fillColor = UIColor.clearColor.CGColor;
    self.backgroundLayer.lineWidth = lineWidth;

    // 创建渐变背景图层
    self.gradientLayer = [CAGradientLayer layer];
    self.gradientLayer.frame = self.bounds;
    self.gradientLayer.colors = @[
        (__bridge id)[MOTools colorWithHexString:@"#FFF0C7" alpha:0.0].CGColor,
        (__bridge id)[MOTools colorWithHexString:@"#FFF0C7" alpha:0.0].CGColor
    ];
    self.gradientLayer.startPoint = CGPointMake(0.5, 0.13);
    self.gradientLayer.endPoint = CGPointMake(0.5, 1.0);
    self.gradientLayer.locations = @[@(0), @(1.0)];
    self.gradientLayer.mask = self.backgroundLayer;
    [self.layer addSublayer:self.gradientLayer];

    // 进度图层
    self.progressLayer = [CAShapeLayer layer];
    self.progressLayer.path = circlePath.CGPath;
//    self.progressLayer.strokeColor = [MOTools colorWithHexString:@"#FFD74A"].CGColor; // #FFD74A
    self.progressLayer.strokeColor = self.ringColor.CGColor;
    self.progressLayer.fillColor = UIColor.clearColor.CGColor;
    self.progressLayer.lineWidth = lineWidth;
    self.progressLayer.lineCap = kCALineCapRound;
    self.progressLayer.strokeStart = 0;
    self.progressLayer.strokeEnd = 1;
    [self.layer addSublayer:self.progressLayer];
}

- (void)reloadAppearance {
    [self.backgroundLayer removeFromSuperlayer];
    [self.progressLayer removeFromSuperlayer];
    [self.gradientLayer removeFromSuperlayer];
    [self setupLayers];
}

- (void)startCountdownWithDuration:(NSTimeInterval)duration {
    [self.progressLayer removeAllAnimations];
    
    self.animationStartTime = CACurrentMediaTime(); // 记录开始时间
    self.animationDuration = duration;

    self.progressLayer.strokeStart = 0;
    self.progressLayer.strokeEnd = 1;

    CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"strokeStart"];
    anim.duration = duration;
    anim.fromValue = @(0.0);
    anim.toValue = @(1.0);
    anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    anim.fillMode = kCAFillModeForwards;
    anim.removedOnCompletion = NO;
    anim.delegate = self;
    [self.progressLayer addAnimation:anim forKey:@"ringCountdown"];
    
}

- (NSTimeInterval)elapsedAnimationTime {
    return CACurrentMediaTime() - self.animationStartTime;
}

// 遵守 <CAAnimationDelegate>
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
    if (flag) {
        MOLogV(@"动画完成");
        [self stopCountdown];
    }
}

- (void)stopCountdown {
    [_progressLayer removeAnimationForKey:@"ringCountdown"];
    if (self.stopBlock) {
        self.stopBlock();
    }
}

@end