<?php

namespace _FancyAnimations\Spatie\Color;

class Hsla implements Color
{
    /** @var float */
    protected $hue;
    protected $saturation;
    protected $lightness;
    protected $alpha;
    public function __construct(float $hue, float $saturation, float $lightness, float $alpha = 1.0)
    {
        Validate::hslValue($saturation, 'saturation');
        Validate::hslValue($lightness, 'lightness');
        Validate::alphaChannelValue($alpha);
        $this->hue = $hue;
        $this->saturation = $saturation;
        $this->lightness = $lightness;
        $this->alpha = $alpha;
    }
    public static function fromString(string $string)
    {
        Validate::hslaColorString($string);
        $matches = null;
        \preg_match('/hsla\\( *(\\d{1,3}) *, *(\\d{1,3})%? *, *(\\d{1,3})%? *, *([0-1](\\.\\d{1,2})?) *\\)/i', $string, $matches);
        return new static($matches[1], $matches[2], $matches[3], $matches[4]);
    }
    public function hue() : float
    {
        return $this->hue;
    }
    public function saturation() : float
    {
        return $this->saturation;
    }
    public function lightness() : float
    {
        return $this->lightness;
    }
    public function red() : int
    {
        return Convert::hslValueToRgb($this->hue, $this->saturation, $this->lightness)[0];
    }
    public function green() : int
    {
        return Convert::hslValueToRgb($this->hue, $this->saturation, $this->lightness)[1];
    }
    public function blue() : int
    {
        return Convert::hslValueToRgb($this->hue, $this->saturation, $this->lightness)[2];
    }
    public function alpha() : float
    {
        return $this->alpha;
    }
    public function contrast() : self
    {
        return Contrast::make($this->toHex())->toHsla($this->alpha());
    }
    public function toCIELab() : CIELab
    {
        return $this->toRgb()->toCIELab();
    }
    public function toCmyk() : Cmyk
    {
        return $this->toRgb()->toCmyk();
    }
    public function toHex(string $alpha = 'ff') : Hex
    {
        return new Hex(Convert::rgbChannelToHexChannel($this->red()), Convert::rgbChannelToHexChannel($this->green()), Convert::rgbChannelToHexChannel($this->blue()), $alpha);
    }
    public function toHsb() : Hsb
    {
        return $this->toRgb()->toHsb();
    }
    public function toHsla(float $alpha = 1) : self
    {
        return new self($this->hue(), $this->saturation(), $this->lightness(), $alpha);
    }
    public function toHsl() : Hsl
    {
        return new Hsl($this->hue(), $this->saturation(), $this->lightness());
    }
    public function toRgb() : Rgb
    {
        return new Rgb($this->red(), $this->green(), $this->blue());
    }
    public function toRgba(float $alpha = 1) : Rgba
    {
        return new Rgba($this->red(), $this->green(), $this->blue(), $alpha);
    }
    public function toXyz() : Xyz
    {
        return $this->toRgb()->toXyz();
    }
    public function __toString() : string
    {
        $hue = \round($this->hue);
        $saturation = \round($this->saturation);
        $lightness = \round($this->lightness);
        $alpha = \round($this->alpha, 2);
        return "hsla({$hue},{$saturation}%,{$lightness}%,{$alpha})";
    }
}
