<?php

namespace My\Dice;

/**
 * Generating histogram data.
 */
class DiceHistogram
{
    /**
     * @var array $serie  The numbers stored in sequence.
     * @var int   $min    The lowest possible number.
     * @var int   $max    The highest possible number.
     */
    private $serie = [];
    private $min;
    private $max;



    /**
     * Get the serie.
     *
     * @return array with the serie.
     */
    public function getSerie()
    {
        return $this->serie;
    }

    /**
     * Get the min.
     *
     * @return array with the serie.
     */
    public function getMin()
    {
        return $this->min;
    }

    /**
     * Get the max.
     *
     * @return array with the serie.
     */
    public function getMax()
    {
        return $this->max;
    }


    /**
     * Return a string with a textual representation of the histogram.
     *
     * @return string representing the histogram.
     */
    public function getAsText()
    {
        $min = $this->getMin();
        $max = $this->getMax();
        $dataHistogram = array_count_values($this->getSerie());
        $string = "";
        if ($min && $max) {
            for ($i = $min; $i <= $max; $i++) {
                if (array_key_exists($i, $dataHistogram))
                {
                    $string .= ' <br>' . "$i. " . str_repeat("*", $dataHistogram[$i]);
                }
                else
                {
                     $string .= ' <br>' . "$i. ";
                }
            }
        }
        else
        {
            foreach ($dataHistogram as $key => $value)
            {
                $string .= ' <br>' . "$key. " . str_repeat("*", $value);
            }
        }
        return $string;
    }

    /**
     * Foreign interface binding method
     *
     * @param object $object interface
     *
     * @return void
     */
    public function injectData(DiceHistogramInterface $object)
    {
        $this->serie = $object->getHistogramSerie();
        $this->min   = $object->getHistogramMin();
        $this->max   = $object->getHistogramMax();
    }
}