//
//  MyCircleView.m
//  MyCircleView
//
//  Created by 张威 on 2020/11/20.
//  Copyright © 2020 JSPY. All rights reserved.
//

#import "MyCircleView.h"

@interface MyCircleView ()

@property (nonatomic, strong) NSTimer * labelTimer;
@property (nonatomic, strong) UIView * centerView;
@property (nonatomic, strong) UILabel * numLabel;
@property (nonatomic, strong) UILabel * textLabel;
@property (nonatomic, strong) UILabel * valueLabel;

@property (nonatomic, assign) CGFloat progressFlag;
@property (nonatomic, assign) NSInteger progressValue;

@property (nonatomic, strong) CAShapeLayer * borderLayer;     //虚线
@property (nonatomic, strong) CAShapeLayer * backgroundLine;  //进度条背景
@property (nonatomic, strong) CAShapeLayer * mainLine;        //进度条
@property (nonatomic, strong) CAShapeLayer * maskLayer;       //遮罩层
@property (nonatomic, strong) CAGradientLayer * rightGrain;   //渐变layer
@property (nonatomic, strong) CAGradientLayer * leftGrain;    //渐变layer

@property (nonatomic, strong) CABasicAnimation * pathAnimation;//加载动画

@property (nonatomic, strong) UIBezierPath * borderPath;       //虚线路径
@property (nonatomic, strong) UIBezierPath * bezierPath;       //进度条路径

@end

@implementation MyCircleView

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        
        _strokelineWidth = 6;
        
        //外层虚线
        [self.layer addSublayer:self.borderLayer];
        self.borderLayer.path = self.borderPath.CGPath;
        
        //进度条
        [self.layer addSublayer:self.backgroundLine];
        [self.layer addSublayer:self.mainLine];
        self.backgroundLine.path = self.bezierPath.CGPath;
        self.mainLine.path = self.bezierPath.CGPath;
        
        //添加渐变色
        [self.layer addSublayer:self.maskLayer];
        [self.maskLayer addSublayer:self.rightGrain];
        [self.maskLayer addSublayer:self.leftGrain];
        [self.maskLayer setMask:self.mainLine];
        
        [self addSubview:self.centerView];
    }
    
    return self;
}

- (void)circleWithProgress:(NSInteger)progress value:(CGFloat)value
{
    _progressFlag = 0;
    _progressValue = progress;

    //进度条添加动画
    self.pathAnimation.duration = progress/100.0f;
    self.pathAnimation.toValue = [NSNumber numberWithFloat:progress/100.f];
    [self.mainLine addAnimation:self.pathAnimation forKey:@"strokeEndAnimation"];

    //添加文字内容
    _valueLabel.text = [NSString stringWithFormat:@"%.1fGB/128GB", value];

    if (progress > 0){
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            self->_labelTimer = [NSTimer scheduledTimerWithTimeInterval:0.01 target:self selector:@selector(NameLbChange) userInfo:nil repeats:YES];
            [[NSRunLoop currentRunLoop] run];
        });
    }
}

#pragma mark - timer methods -

- (void)NameLbChange
{
    dispatch_async(dispatch_get_main_queue(), ^{
        self->_numLabel.attributedText = [self labelStytle:self->_progressFlag];
    });
    
    _progressFlag += 1;
    
    if (_progressFlag > _progressValue) {
        [_labelTimer invalidate];
        _labelTimer = nil;
    }
}

- (NSMutableAttributedString *)labelStytle:(NSInteger)value
{
    if (value > _progressValue) {
        value = _progressValue;
    }
    
    NSString * pace = [NSString stringWithFormat:@"%ld%@", value, @"%"];
    NSMutableAttributedString * pace1 = [[NSMutableAttributedString alloc] initWithString:pace];
    [pace1 addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:40] range:NSMakeRange(0, pace.length - 1)];
    [pace1 addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:20] range:NSMakeRange(pace.length - 1, 1)];
    NSRange titleRange = NSMakeRange(0, pace.length);
    [pace1 addAttribute:NSForegroundColorAttributeName
                  value:[UIColor whiteColor]
                  range:titleRange];
    return pace1;
}


#pragma mark - lazy -

- (UIView *)centerView
{
    if (!_centerView) {
        _centerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width - _strokelineWidth*2 - 30, self.bounds.size.width - _strokelineWidth*2 - 30)];
        _centerView.center = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2);
        _centerView.backgroundColor = [UIColor colorWithRed:85/255.0 green:172/255.0 blue:234/255.0 alpha:1.0];
        _centerView.layer.masksToBounds = YES;
        _centerView.layer.cornerRadius = (self.bounds.size.width - _strokelineWidth*2 - 30) / 2;
        
        [_centerView addSubview:self.numLabel];
        [_centerView addSubview:self.textLabel];
        [_centerView addSubview:self.valueLabel];
    }
    
    return _centerView;
}

- (UILabel *)valueLabel
{
    if (!_valueLabel) {
        _valueLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, _centerView.bounds.size.height/2 + 40, _centerView.bounds.size.width, 14)];
        _valueLabel.text = @"40GB/128GB";
        _valueLabel.textColor = [UIColor whiteColor];
        _valueLabel.backgroundColor = [UIColor clearColor];
        _valueLabel.textAlignment = NSTextAlignmentCenter;
        _valueLabel.font = [UIFont systemFontOfSize:14];
    }
    
    return _valueLabel;
}

- (UILabel *)textLabel
{
    if (!_textLabel) {
        _textLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, _centerView.bounds.size.height/2 - 40 - 12, _centerView.bounds.size.width, 12)];
        _textLabel.text = @"已使用";
        _textLabel.textColor = [UIColor whiteColor];
        _textLabel.backgroundColor = [UIColor clearColor];
        _textLabel.textAlignment = NSTextAlignmentCenter;
        _textLabel.font = [UIFont systemFontOfSize:12];
    }
    
    return _textLabel;
}

- (UILabel *)numLabel
{
    if(!_numLabel) {
        _numLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, _centerView.bounds.size.width, 40)];
        _numLabel.center = CGPointMake(_centerView.bounds.size.width/2, _centerView.bounds.size.height/2);
        _numLabel.textAlignment = NSTextAlignmentCenter;
        _numLabel.backgroundColor = [UIColor clearColor];
        _numLabel.font = [UIFont boldSystemFontOfSize:40];
        _numLabel.textColor = [UIColor whiteColor];
        _numLabel.text = @"0";
    }
    
    return _numLabel;
}

- (CAShapeLayer *)borderLayer
{
    if (!_borderLayer) {
        _borderLayer = [[CAShapeLayer alloc] init];
        _borderLayer.fillColor = [UIColor clearColor].CGColor;
        _borderLayer.strokeColor = [UIColor colorWithRed:85/255.0 green:172/255.0 blue:234/255.0 alpha:1.0].CGColor;
        _borderLayer.lineWidth = 2.f;
        _borderLayer.lineCap = @"round";
        _borderLayer.lineDashPattern = @[@2, @4];
    }
    
    return _borderLayer;
}

- (CAShapeLayer *)backgroundLine
{
    if(!_backgroundLine) {
        _backgroundLine = [[CAShapeLayer alloc] init];
        _backgroundLine.fillColor = [UIColor clearColor].CGColor;
        _backgroundLine.strokeColor = [UIColor colorWithRed:85/255.0 green:172/255.0 blue:234/255.0 alpha:1.0].CGColor;
        _backgroundLine.lineWidth = _strokelineWidth;
    }
    
    return _backgroundLine;
}

- (CAShapeLayer *)mainLine
{
    if(!_mainLine) {
        _mainLine = [[CAShapeLayer alloc] init];
        _mainLine.fillColor = [UIColor clearColor].CGColor;
        _mainLine.strokeColor = [UIColor whiteColor].CGColor;
        _mainLine.lineWidth = _strokelineWidth;
        _mainLine.lineCap = @"round";
        _mainLine.strokeStart = 0.01;
    }
    
    return _mainLine;
}

- (CAShapeLayer *)maskLayer
{
    if (!_maskLayer) {
        _maskLayer = [CAShapeLayer layer];
    }
    
    return _maskLayer;
}

- (CAGradientLayer *)rightGrain
{
    if(!_rightGrain) {
        _rightGrain = [[CAGradientLayer alloc] init];
        _rightGrain.frame = CGRectMake(self.bounds.size.width/2, 0, self.bounds.size.width/2, self.bounds.size.height);
        [_rightGrain setColors:[NSArray arrayWithObjects:
                           (id)[[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:1.0] CGColor],
                           (id)[[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:1.0] CGColor],
                           nil]];
        [_rightGrain setLocations:@[@0, @1.0]];
        [_rightGrain setStartPoint:CGPointMake(0.5, 0)];
        [_rightGrain setEndPoint:CGPointMake(0.5, 1)];
        _rightGrain.type = kCAGradientLayerAxial;
    }
    
    return _rightGrain;
}

- (CAGradientLayer *)leftGrain
{
    if (!_leftGrain) {
        _leftGrain = [[CAGradientLayer alloc] init];
        _leftGrain.frame = CGRectMake(0, 0, self.bounds.size.width/2, self.bounds.size.height);
        [_leftGrain setColors:[NSArray arrayWithObjects:
                           (id)[[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:1.0] CGColor],
                           (id)[[UIColor colorWithRed:255/255.0 green:0/255.0 blue:0/255.0 alpha:1.0] CGColor],
                           nil]];
        [_leftGrain setLocations:@[@0.5, @1.0]];
        [_leftGrain setStartPoint:CGPointMake(0.5, 1)];
        [_leftGrain setEndPoint:CGPointMake(0.5, 0)];
        _leftGrain.type = kCAGradientLayerAxial;
    }
    
    return _leftGrain;
}

- (CABasicAnimation *)pathAnimation
{
    if (!_pathAnimation) {
        _pathAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
        _pathAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
        _pathAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
        _pathAnimation.fillMode = kCAFillModeForwards;
        _pathAnimation.removedOnCompletion = NO;
    }
    
    return _pathAnimation;
}

- (UIBezierPath *)borderPath
{
    if (!_borderPath) {
        _borderPath = [UIBezierPath bezierPathWithArcCenter:CGPointMake(self.bounds.size.width/2, self.bounds.size.width/2) radius:self.bounds.size.width/2 startAngle:-M_PI_2 endAngle:-M_PI_2 + M_PI*2 clockwise:YES];
    }
    
    return _borderPath;
}

- (UIBezierPath *)bezierPath
{
    if (!_bezierPath) {
        _bezierPath = [UIBezierPath bezierPathWithArcCenter:CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2) radius:self.bounds.size.width/2 - _strokelineWidth - 4 startAngle:-M_PI_2 endAngle:-M_PI_2 + M_PI*2 clockwise:YES];
    }
    
    return _bezierPath;
}

@end