//
//  CircleView.swift
//  FunDoHealth
//
//  Created by lemo on 2018/6/6.
//  Copyright © 2020年 ecell. All rights reserved.
//

import UIKit

enum CircleType {
    case base
    case dottedLine
    case doubleLine
}

class CircleView: UIView {
    
    /// 进度颜色
    fileprivate var bottomColor = kHexColor(0xFF9833)
    /// 进度颜色
    fileprivate var progressColor = kHexColor(0xFF9833)
    /// 线宽度
    fileprivate var lineWidth: CGFloat = 0
    /// 圆整体的宽高
    fileprivate var circleWH: CGFloat = 0
    /// 圆的半径
    fileprivate var circleRadius: CGFloat = 0
    /// 圆内数据
    var dataLabel: UILabel!
    /// 进度数组
    var shapeLayers: [CAShapeLayer] = []
    /// 圆类型
    var type: CircleType = .base
    /// 当前进度
    var progress: Float = 0
    
    convenience init(lineWidth: CGFloat,
                     bottomColor: UIColor,
                     progressColor: UIColor = .clear,
                     type: CircleType) {
        self.init()
        self.lineWidth = lineWidth
        self.bottomColor = bottomColor
        self.progressColor = progressColor
        self.type = type
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        circleWH = width - lineWidth
        circleRadius = circleWH / 2.0
        setUpCirle()
    }
    
    /// 更新进度
    /// - Parameter process: 0-1
    func updateProcess(process: Float) {
        fbsetUpCirleProcess(process: process)
    }
    
}

extension CircleView {
    // MARK:- 初始化
    /// 设置圆环
    fileprivate func setUpCirle() {
        // 圆形路径
        let cirlePath = UIBezierPath(roundedRect: CGRect(x: lineWidth / 2.0, y: lineWidth / 2.0, width: circleWH, height: circleWH), cornerRadius: circleRadius)
        switch type {
        case .dottedLine:
            let dotteShapLayer = CAShapeLayer()
            dotteShapLayer.fillColor = UIColor.clear.cgColor
            dotteShapLayer.strokeColor = self.bottomColor.cgColor
            dotteShapLayer.lineWidth = lineWidth
            dotteShapLayer.path = cirlePath.cgPath
            let arr :NSArray = NSArray(array: [3,5])
            dotteShapLayer.lineDashPhase = 1.0
            dotteShapLayer.lineDashPattern = arr as? [NSNumber]
            layer.addSublayer(dotteShapLayer)
        default:
            // 绘制底层圆环
            let bottomCirleShapeLayer = CAShapeLayer()
            bottomCirleShapeLayer.path = cirlePath.cgPath
            bottomCirleShapeLayer.fillColor = UIColor.clear.cgColor
            bottomCirleShapeLayer.strokeColor = self.bottomColor.cgColor
            bottomCirleShapeLayer.lineWidth = lineWidth
            layer.addSublayer(bottomCirleShapeLayer)
            // 绘制进度
            fbsetUpCirleProcess(process: self.progress)
        }
    }
    
    /// 圆环进度设置
    fileprivate func fbsetUpCirleProcess(process: Float) {
        // 移除上一次进度
        if shapeLayers.count > 0 {
            shapeLayers.forEach({ (layer) in
                layer.removeFromSuperlayer()
            })
            shapeLayers.removeAll()
        }
        var temProcess = process
        if temProcess > 1 {
            temProcess = 1
        }
        if temProcess < 0 {
            temProcess = 0
        }
        self.progress = temProcess
        // 圆进度路径
        let endAngle = temProcess * Float.pi * 2.0 + 1.5 * Float.pi
        let cirlePath = UIBezierPath(arcCenter: CGPoint(x: circleRadius + (lineWidth / 2.0), y: circleRadius + (lineWidth / 2.0)), radius: circleRadius, startAngle: CGFloat(Double.pi) * 1.5, endAngle: CGFloat(endAngle), clockwise: true)
        // 绘制进度圆环
        let processCirleShapeLayer = CAShapeLayer()
        processCirleShapeLayer.path = cirlePath.cgPath
        processCirleShapeLayer.fillColor = UIColor.clear.cgColor
        processCirleShapeLayer.strokeColor = progressColor.cgColor
        processCirleShapeLayer.lineWidth = lineWidth
        processCirleShapeLayer.lineCap = CAShapeLayerLineCap.round
        layer.addSublayer(processCirleShapeLayer)
        shapeLayers.append(processCirleShapeLayer)
        if type == .doubleLine {
            // 内进度线
            let internalRadius = circleRadius - lineWidth
            let internalCirlePath = UIBezierPath(arcCenter: CGPoint(x: circleRadius + (lineWidth / 2.0), y: circleRadius + (lineWidth / 2.0)), radius: internalRadius, startAngle: CGFloat(Double.pi) * 1.5, endAngle: CGFloat(endAngle), clockwise: true)
            let internalCirleShapeLayer = CAShapeLayer()
            internalCirleShapeLayer.path = internalCirlePath.cgPath
            internalCirleShapeLayer.fillColor = UIColor.clear.cgColor
            internalCirleShapeLayer.strokeColor = progressColor.cgColor
            internalCirleShapeLayer.lineWidth = 2
            internalCirleShapeLayer.lineCap = CAShapeLayerLineCap.round
            layer.addSublayer(internalCirleShapeLayer)
            shapeLayers.append(internalCirleShapeLayer)
        }
    }
    
}