<?php

namespace NoccyLabs\Shell;

class Style
{
    const NONE          = null;

    const BLACK         = 0;
    const RED           = 1;
    const GREEN         = 2;
    const YELLOW        = 3;
    const BLUE          = 4;
    const MAGENTA       = 5;
    const CYAN          = 6;
    const WHITE         = 7;

    const GRAY          = 8;
    const BR_RED        = 9;
    const BR_GREEN      = 10;
    const BR_YELLOW     = 11;
    const BR_BLUE       = 12;
    const BR_MAGENTA    = 13;
    const BR_CYAN       = 14;
    const BR_WHITE      = 15;

    const A_INTENSE     = 1;
    const A_UNDERLINE   = 4;
    const A_INVERSE     = 7;

    protected $fg = self::NONE;

    protected $bg = self::NONE;

    public function __construct($fg=self::NONE, $bg=self::NONE)
    {
        $this->fg = $fg;
        $this->bg = $bg;
    }

    public function __invoke($string)
    {
        $pre = null; $post = null;
        if ($this->fg !== self::NONE) {
            $pre.= "\e[".(($this->fg > 7)?(90+($this->fg-8)):(30+$this->fg))."m"; 
            $post.= "\e[39m";
        }
        if ($this->bg !== self::NONE) {
            $pre.= "\e[".(($this->bg > 7)?(100+($this->bg-8)):(40+$this->bg))."m"; 
            $post.= "\e[49m";
        }
        
        return $pre . $string . $post;

    }

}