//
//  SKTriangleView.swift
//  sport
//
//  Created by Kviatkovskii on 26/03/2018.
//  Copyright © 2018 Kviatkovskii. All rights reserved.
//

import UIKit

final class SKTriangleView: UIView {

    fileprivate let color: UIColor

    fileprivate let titleLabel: UILabel = {
        let label = UILabel()
        label.textAlignment = .center
        label.font = .systemFont(ofSize: 23)
        return label
    }()

    fileprivate func setConstraints() {
        titleLabel.snp.makeConstraints { (make) in
            make.bottom.equalToSuperview().inset(20)
            make.left.right.equalToSuperview().inset(25)
            make.height.equalTo(30)
        }
    }

    init(color: UIColor, title: String) {
        self.color = color
        titleLabel.text = title.uppercased()
        super.init(frame: CGRect())

        backgroundColor = .clear
        addSubview(titleLabel)
        setConstraints()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func draw(_ rect: CGRect) {
        let context = UIGraphicsGetCurrentContext()
        context!.setFillColor(UIColor.clear.cgColor)
        context!.fill(rect)

        let size = bounds.size

        // line
        let pLine1 = CGPoint(x: 0, y: size.height * 0.45)
        let pLine2 = CGPoint(x: size.width / 2, y: 1)
        let pLine3 = CGPoint(x: size.width, y: size.height * 0.45)

        let linePath = UIBezierPath()
        linePath.move(to: pLine1)
        linePath.addLine(to: pLine2)
        linePath.addLine(to: pLine3)

        linePath.miterLimit = 4
        linePath.usesEvenOddFillRule = true
        linePath.lineWidth = 2.0
        linePath.lineJoinStyle = .round
        linePath.lineCapStyle = .round
        context?.setStrokeColor(color.cgColor)
        linePath.stroke()

        // trianle
        let pTriangle1 = CGPoint(x: pLine1.x, y: pLine1.y + 5)
        let pTriangle2 = CGPoint(x: pLine2.x, y: pLine2.y + 5)
        let pTriangle3 = CGPoint(x: pLine3.x, y: pLine3.y + 5)
        let pTriangle4 = CGPoint(x: pLine3.x, y: size.height)
        let pTriangle5 = CGPoint(x: 0, y: size.height)
        let pTriangle6 = CGPoint(x: pTriangle1.x, y: pTriangle1.y)

        let trianglePath = UIBezierPath()
        trianglePath.move(to: pTriangle1)
        trianglePath.addLine(to: pTriangle2)
        trianglePath.addLine(to: pTriangle3)
        trianglePath.addLine(to: pTriangle4)
        trianglePath.addLine(to: pTriangle5)
        trianglePath.addLine(to: pTriangle6)

        context?.setFillColor(color.cgColor)
        trianglePath.fill()
    }
}