//
//  FBYLineGraphContentView.m
//  FBYDataDisplay-iOS
//
//  Created by fby on 2018/1/18.
//  Copyright © 2018年 FBYDataDisplay-iOS. All rights reserved.
//

#import "FBYLineGraphContentView.h"

#import "FBYLineGraphColorView.h"

// Tag 基初值
#define BASE_TAG_COVERVIEW 100
#define BASE_TAG_CIRCLEVIEW 200
#define BASE_TAG_POPBTN 300

@interface FBYLineGraphContentView() {
    //存点位置的数组
    NSMutableArray *pointArray;
    NSInteger lastSelectedIndex;
    //暂存的Rect;
    CGRect _tempRect;
}

/// 存点的点击View 的数组
@property(nonatomic, strong) NSMutableArray<UIView*> *pointTapViewArray;
@end

@implementation FBYLineGraphContentView

-(UIColor *)MainColor{
    if(!_MainColor){
        _MainColor = [UIColor colorWithRed:255/255.0 green:69/255.0 blue:0/255.0 alpha:1];
    }
    return _MainColor;
}
- (void)setMaxValue:(CGFloat)maxValue {
    _maxValue = maxValue;
}

- (void)setValueArray:(NSArray *)valueArray {
    _valueArray = valueArray;
}

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        lastSelectedIndex = - 1;
        pointArray = [NSMutableArray array];
        _pointTapViewArray = [NSMutableArray array];
        _tempRect = CGRectZero;
        self.yAxis_L = frame.size.height;
        self.xAxis_L = frame.size.width;
        
    }
    return  self;
}

- (void)mapping {
    
    [super mapping];
    
    [self drawChartLine];
    [self drawGradient];
    
    [self setupCircleViews];
    [self setupCoverViews];
}

- (void)reloadDatas {
    
    [super reloadDatas];
    
    [self clearView];
    [self mapping];
}

#pragma mark 画折线图
- (void)drawChartLine
{
    UIBezierPath *pAxisPath = [[UIBezierPath alloc] init];
    
    CGFloat unint_X = self.xAxis_L / (_xMarkmaxValue - _xMarkminValue);
    
    for (int i = 0; i < self.valueArray.count; i ++) {
        
        
        
        CGFloat value = [self.valueArray[i] floatValue];
        //x轴的比例
//        NSString *yTitle = [NSString stringWithFormat:@"%@",self.xMarkValues[i]];
//        NSArray *arr = [yTitle componentsSeparatedByString:@"."];
        CGFloat xMarkValue = [self.xMarkValues[i] floatValue];
        CGFloat point_X = (xMarkValue-_xMarkminValue) * unint_X + self.startPoint.x;
        //Y轴比例
        CGFloat percent = (value - self.minValue) / (self.maxValue - self.minValue);
        CGFloat point_Y = self.yAxis_L * (1 - percent) + self.startPoint.y;
//        CGFloat point_Y = self.yAxis_L - (value-_minValue) * unint_Y;
        
        CGPoint point = CGPointMake(point_X, point_Y);
        
        // 记录各点的坐标方便后边添加渐变阴影 和 点击层视图 等
        [pointArray addObject:[NSValue valueWithCGPoint:point]];
        
        if (i == 0) {
            [pAxisPath moveToPoint:point];
        }
        else {
            [pAxisPath addLineToPoint:point];
        }
    }
    
    CAShapeLayer *pAxisLayer = [CAShapeLayer layer];
    pAxisLayer.lineWidth = 1;
    pAxisLayer.strokeColor = self.MainColor.CGColor;
    pAxisLayer.fillColor = [UIColor clearColor].CGColor;
    pAxisLayer.path = pAxisPath.CGPath;
    [self.layer addSublayer:pAxisLayer];
}

#pragma mark 渐变阴影
- (void)drawGradient {
    
    CAGradientLayer *gradientLayer = [CAGradientLayer layer];
    gradientLayer.frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
//    gradientLayer.colors = @[(__bridge id)[UIColor colorWithRed:250/255.0 green:170/255.0 blue:10/255.0 alpha:0.8].CGColor,(__bridge id)[UIColor colorWithWhite:1 alpha:0.1].CGColor];
    
    gradientLayer.colors = @[(__bridge id)self.MainColor.CGColor,(__bridge id)[UIColor colorWithWhite:1 alpha:0.1].CGColor];
    
    gradientLayer.locations=@[@0.0,@1.0];
    gradientLayer.startPoint = CGPointMake(0.0,0.0);
    gradientLayer.endPoint = CGPointMake(0.0,1);
    
    UIBezierPath *gradientPath = [[UIBezierPath alloc] init];
//    [gradientPath moveToPoint:CGPointMake(self.startPoint.x, self.yAxis_L + self.startPoint.y)];
    CGPoint startPoint = [[pointArray firstObject] CGPointValue];
    [gradientPath moveToPoint:CGPointMake(startPoint.x, self.yAxis_L + self.startPoint.y)];
    for (int i = 0; i < pointArray.count; i ++) {
        [gradientPath addLineToPoint:[pointArray[i] CGPointValue]];
    }
    
    CGPoint endPoint = [[pointArray lastObject] CGPointValue];
//    endPoint = CGPointMake(endPoint.x + self.startPoint.x, self.yAxis_L + self.startPoint.y);
    endPoint = CGPointMake(endPoint.x, self.yAxis_L + self.startPoint.y);
    [gradientPath addLineToPoint:endPoint];
    CAShapeLayer *arc = [CAShapeLayer layer];
    arc.path = gradientPath.CGPath;
    gradientLayer.mask = arc;
    [self.layer addSublayer:gradientLayer];
    
}

#pragma mark 折线上的圆环
- (void)setupCircleViews {
    
    for (int i = 0; i < pointArray.count; i ++) {
        
        FBYLineGraphColorView *lineGraphColorView = [[FBYLineGraphColorView alloc] initWithCenter:[pointArray[i] CGPointValue] radius:4];
        lineGraphColorView.tag = i + BASE_TAG_CIRCLEVIEW;
        lineGraphColorView.borderColor = self.MainColor;
        lineGraphColorView.borderWidth = 1.0;
        [self addSubview:lineGraphColorView];
    }
}

#pragma mark 覆盖一层点击图层
- (void)setupCoverViews {
    
    for (int i = 0; i < pointArray.count; i ++) {
        
        UIView *coverView = [[UIView alloc] init];
        coverView.tag = BASE_TAG_COVERVIEW + i;
        
//        if (i == 0) {
//
//            coverView.frame = CGRectMake(self.startPoint.x, self.startPoint.y, self.xScaleMarkLEN  / 2, self.yAxis_L);
//            [self addSubview:coverView];
//        }
//        else if (i == pointArray.count - 1 && pointArray.count == self.xMarkScaleArr.count) {
//            CGPoint point = [pointArray[i] CGPointValue];
//            coverView.frame = CGRectMake(point.x - self.xScaleMarkLEN / 2, self.startPoint.y, self.xScaleMarkLEN  / 2, self.yAxis_L);
//            [self addSubview:coverView];
//        }
//        else {
//            CGPoint point = [pointArray[i] CGPointValue];
//            coverView.frame = CGRectMake(point.x - self.xScaleMarkLEN / 2, self.startPoint.y, self.xScaleMarkLEN, self.yAxis_L);
//            [self addSubview:coverView];
//        }
        
        
        CGPoint point = [pointArray[i] CGPointValue];
        if(self.chartType == 0){
            coverView.frame = CGRectMake(point.x - 20 / 2, self.startPoint.y, 20, self.yAxis_L);
        }else{
            coverView.frame = CGRectMake(point.x - 20 / 2, self.startPoint.y, self.xScaleMarkLEN, self.yAxis_L);
        }
        
        [self addSubview:coverView];
        
        
        
        
        
        UITapGestureRecognizer *gesutre = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(gesutreAction:)];
        [coverView addGestureRecognizer:gesutre];
        [_pointTapViewArray addObject:coverView];
    }
}

-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    
     //判断point是否在rect内
//    bool CGRectContainsPoint(CGRect rect, CGPoint point)
    
    UITouch* touch = [touches anyObject];
    CGPoint currentPoint = [touch locationInView:self]; // 当前视图内的坐标
    if(!CGRectIsEmpty(_tempRect)){
        if(CGRectContainsPoint(_tempRect, currentPoint)){
            return;
        }
    }
    for (UIView *item in _pointTapViewArray) {
        if (CGRectContainsPoint(item.frame, currentPoint)){
            _tempRect = item.frame;
            [self gesutreAction:item.gestureRecognizers.firstObject];
        }
    }
}

#pragma mark- 点击层视图的点击事件
- (void)gesutreAction:(UITapGestureRecognizer *)sender {
    
    NSInteger index = sender.view.tag - BASE_TAG_COVERVIEW;
    
    if (lastSelectedIndex != -1) {
        
        FBYLineGraphColorView *lineGraphColorView = (FBYLineGraphColorView *)[self viewWithTag:lastSelectedIndex + BASE_TAG_CIRCLEVIEW];
        lineGraphColorView.borderWidth = 1;
        
        UIButton *lastPopBtn = (UIButton *)[self viewWithTag:lastSelectedIndex + BASE_TAG_POPBTN];
        [lastPopBtn removeFromSuperview];
    }
    
    FBYLineGraphColorView *lineGraphColorView = (FBYLineGraphColorView *)[self viewWithTag:index + BASE_TAG_CIRCLEVIEW];
    lineGraphColorView.borderWidth = 2;
    
    CGPoint point = [pointArray[index] CGPointValue];
    
    UIButton *popBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
    popBtn.tag = index + BASE_TAG_POPBTN;
    CGFloat popBtnWidth = 80;
    CGFloat popBtnHeight = 35;
    
    
//    [popBtn setBackgroundImage:[UIImage imageNamed:@"bgcolors"] forState:UIControlStateNormal];
    [popBtn setBackgroundColor:[self.MainColor colorWithAlphaComponent:0.5]];
    
    popBtn.layer.cornerRadius = 5;
    popBtn.layer.masksToBounds = YES;
    
    popBtn.titleLabel.textAlignment = NSTextAlignmentCenter;
    if(self.chartType == 0){
        popBtnWidth = 80;
        popBtnHeight = 35;
//        [popBtn setTitleEdgeInsets:UIEdgeInsetsMake(- 3, 0, 0, 0)];
        popBtn.titleLabel.numberOfLines = 2;
        popBtn.titleLabel.font = [UIFont systemFontOfSize:10];
        //上传时间
        NSTimeInterval updateTime = [self.xMarkValues[index] integerValue];
        NSDateFormatter*dateFormatter = [[NSDateFormatter alloc]init];
        [dateFormatter setDateFormat:@"HH:mm"];
        NSString *upDateTime = [dateFormatter stringFromDate:[NSDate dateWithTimeIntervalSince1970:updateTime]];
        [popBtn setTitle:[NSString stringWithFormat:@"上传时间:%@\n值:%@",upDateTime,self.valueArray[index]] forState:(UIControlStateNormal)];
    }else{
        popBtnWidth = 50;
        popBtnHeight = 25;
        popBtn.titleLabel.font = [UIFont systemFontOfSize:12];
        [popBtn setTitle:[NSString stringWithFormat:@"%@",self.valueArray[index]] forState:(UIControlStateNormal)];
    }
    CGFloat temp_X = point.x - popBtnWidth/2.0;
    if (point.x+popBtnWidth/2.0 > self.frame.size.width){
        temp_X = point.x - popBtnWidth;
    }
    if (temp_X < 0) {
        temp_X = 0;
    }
    popBtn.frame = CGRectMake(temp_X, point.y - popBtnHeight-5, popBtnWidth, popBtnHeight);
    
    
    
    [self addSubview:popBtn];
    
    lastSelectedIndex = index;
}

-(void)drawXGridline{
    [super drawXGridline];
    //如果有上下限
    if (_upperValue > self.minValue) {
        UIBezierPath *xAxisPath = [[UIBezierPath alloc] init];
        //Y轴比例
        CGFloat percent = (_upperValue - self.minValue)/ (self.maxValue - self.minValue);
        CGFloat point_Y = self.yAxis_L * (1 - percent) + self.startPoint.y;
        [xAxisPath moveToPoint:CGPointMake(self.startPoint.x, point_Y)];
        [xAxisPath addLineToPoint:CGPointMake(self.startPoint.x + self.xAxis_L, point_Y)];
        
        CAShapeLayer *xAxisLayer = [CAShapeLayer layer];
        [xAxisLayer setLineDashPattern:[NSArray arrayWithObjects:[NSNumber numberWithInt:1], [NSNumber numberWithInt:1.5], nil]];
        xAxisLayer.lineWidth = 0.5;
        xAxisLayer.strokeColor = [UIColor redColor].CGColor;
        xAxisLayer.path = xAxisPath.CGPath;
        [self.layer addSublayer:xAxisLayer];
        
        UILabel *markLab = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 25, 16)];
        markLab.center = CGPointMake(self.startPoint.x + self.xAxis_L - 25, point_Y - 16/2.0);
        markLab.textAlignment = NSTextAlignmentRight;
        markLab.textColor = [UIColor colorWithRed:51.0f/255.0f green:51.0f/255.0f blue:51.0f/255.0f alpha:1.0f];
        markLab.font = [UIFont systemFontOfSize:11.0];
        markLab.text = @"上限";
        [self addSubview:markLab];
    }
    
    if (_lowerValue > self.minValue){
        UIBezierPath *xAxisPath = [[UIBezierPath alloc] init];
        //Y轴比例
        CGFloat percent = (_lowerValue - self.minValue)/ (self.maxValue - self.minValue);
        CGFloat point_Y = self.yAxis_L * (1 - percent) + self.startPoint.y;
        [xAxisPath moveToPoint:CGPointMake(self.startPoint.x, point_Y)];
        [xAxisPath addLineToPoint:CGPointMake(self.startPoint.x + self.xAxis_L, point_Y)];
        
        CAShapeLayer *xAxisLayer = [CAShapeLayer layer];
        [xAxisLayer setLineDashPattern:[NSArray arrayWithObjects:[NSNumber numberWithInt:1], [NSNumber numberWithInt:1.5], nil]];
        xAxisLayer.lineWidth = 0.5;
        xAxisLayer.strokeColor = [UIColor redColor].CGColor;
        xAxisLayer.path = xAxisPath.CGPath;
        [self.layer addSublayer:xAxisLayer];
        UILabel *markLab = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 25, 16)];
        markLab.center = CGPointMake(self.startPoint.x + self.xAxis_L - 25, point_Y - 16/2.0);
        markLab.textAlignment = NSTextAlignmentRight;
        markLab.textColor = [UIColor colorWithRed:51.0f/255.0f green:51.0f/255.0f blue:51.0f/255.0f alpha:1.0f];
        markLab.font = [UIFont systemFontOfSize:11.0];
        markLab.text = @"下限";
        [self addSubview:markLab];
    }
}

#pragma mark- 清空视图
- (void)clearView {
    [self removeSubviews];
    [self removeSublayers];
}

#pragma mark 移除 点击图层 、圆环 、数值标签
- (void)removeSubviews {
    for (UIView *view in self.subviews) {
        [view removeFromSuperview];
    }
}

#pragma mark 移除折线
- (void)removeSublayers {
    for (CALayer *layer in self.layer.sublayers) {
        [layer removeFromSuperlayer];
    }
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

@end