1:   2:   3:   4:   5:   6:   7:   8:   9:  10:  11:  12:  13:  14:  15:  16:  17:  18:  19:  20:  21:  22:  23:  24:  25:  26:  27:  28:  29:  30:  31:  32:  33:  34:  35:  36:  37:  38:  39:  40:  41:  42:  43:  44:  45:  46:  47:  48:  49:  50:  51:  52:  53:  54:  55:  56:  57:  58:  59:  60:  61:  62:  63:  64:  65:  66:  67:  68:  69:  70:  71:  72:  73:  74:  75:  76:  77:  78:  79:  80:  81:  82:  83:  84:  85:  86:  87:  88:  89:  90:  91:  92:  93:  94:  95:  96:  97:  98:  99: 100: 101: 102: 103: 104: 105: 106: 107: 108: 109: 110: 111: 112: 113: 114: 115: 116: 117: 118: 119: 120: 121: 122: 123: 124: 125: 126: 127: 128: 129: 130: 131: 132: 133: 134: 135: 136: 137: 138: 

<?php
/**
 * @author stev leibelt <artodeto@bazzline.net>
 * @since: 2015-10-02
 */
namespace Net\Bazzline\Component\Template;

use InvalidArgumentException;
use RuntimeException;

class RuntimeContentBasedTemplate extends AbstractTemplate implements DelimiterInterface
{
    /** @var string */
    private $closingDelimiter;

    /** @var null|string */
    private $content;

    /** @var string */
    private $openingDelimiter;

    /**
     * @param array $variables
     * @param null|string $content
     * @param string $openingDelimiter
     * @param string $closingDelimiter
     * @throws InvalidArgumentException
     */
    public function __construct($variables = array(), $content = null, $openingDelimiter = '{', $closingDelimiter = '}')
    {
        parent::__construct($variables);

        $this->setPropertiesIfProvided($content, $closingDelimiter, $openingDelimiter);
    }

    /**
     * @param array $variables
     * @param null|string $content
     * @param null|string $openingDelimiter
     * @param null|string $closingDelimiter
     * @return string
     * @throws InvalidArgumentException
     * @throws RuntimeException
     */
    public function __invoke($variables = array(), $content = null, $openingDelimiter = null, $closingDelimiter = null)
    {
        $this->setPropertiesIfProvided($content, $closingDelimiter, $openingDelimiter);

        return parent::__invoke($variables);
    }

    /**
     * @param string $closingDelimiter
     */
    public function setClosingDelimiter($closingDelimiter)
    {
        $this->closingDelimiter = $closingDelimiter;
    }

    /**
     * @param string $content
     * @throws InvalidArgumentException
     */
    public function setContent($content)
    {
        $content = (string) $content;

        if (strlen($content) < 1) {
            throw new InvalidArgumentException(
                'content must have a string length of at least one character'
            );
        }

        $this->content = $content;
    }

    /**
     * @param string $openingDelimiter
     */
    public function setOpeningDelimiter($openingDelimiter)
    {
        $this->openingDelimiter = $openingDelimiter;
    }

    /**
     * @return string
     * @throws RuntimeException
     */
    protected function getContent()
    {
        if (is_null($this->content)) {
            throw new RuntimeException(
                'no content provided'
            );
        }

        return $this->content;
    }

    /**
     * @return array
     */
    protected function getVariables()
    {
        $prefix     = $this->openingDelimiter;
        $suffix     = $this->closingDelimiter;
        $variables  = parent::getVariables();
        $array      = array();  //@todo find a better name

        foreach ($variables as $key => $value) {
            $array[$prefix . $key . $suffix] = $value;
        }

        return $array;
    }

    /**
     * @param null $content
     * @param null|string $closingDelimiter
     * @param null|string $openingDelimiter
     * @throws InvalidArgumentException
     */
    private function setPropertiesIfProvided($content = null, $closingDelimiter = null, $openingDelimiter = null)
    {
        if (!is_null($content)) {
            $this->setContent($content);
        }

        if (!is_null($closingDelimiter)) {
            $this->setClosingDelimiter($closingDelimiter);
        }

        if (!is_null($openingDelimiter)) {
            $this->setOpeningDelimiter($openingDelimiter);
        }
    }
}