Template::findYamlFileInDirectory()   A
last analyzed

Complexity

Conditions 4
Paths 4

Size

Total Lines 17
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
eloc 9
c 1
b 0
f 0
dl 0
loc 17
rs 9.9666
cc 4
nc 4
nop 2
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<?php
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namespace Glamorous\Boiler\Helpers;
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use Glamorous\Boiler\BoilerException;
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use SplFileInfo;
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use Symfony\Component\Finder\Finder;
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use Symfony\Component\Yaml\Exception\ParseException;
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use Symfony\Component\Yaml\Yaml;
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class Template
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{
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    /**
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     * Singleton pattern instance.
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     *
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     * @var self
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     */
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    private static $instance = null;
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    /**
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     * Array with the paths.
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     *
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     * @var array
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     */
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    protected $paths;
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    /**
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     * Template constructor.
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     */
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    private function __construct()
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    {
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    }
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    /**
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     * Get singleton instance of the class.
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     *
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     * @return Template
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     */
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    public static function getInstance()
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    {
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        if (self::$instance === null) {
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            self::$instance = new Template();
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        }
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        return self::$instance;
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    }
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    /**
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     * Method to get a valid template from a given template name.
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     *
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     * @param string $fileName
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     * @param array $paths
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     *
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     * @return array
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     *
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     * @throws BoilerException
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     */
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    public function searchTemplateByFilenameInGivenPaths(string $fileName, array $paths): array
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    {
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        $this->paths = $paths;
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        $template = $this->findAndParseTemplate($fileName);
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        $extraTemplates = $this->getIncludedTemplates($template);
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        $template = $this->mergeExtraTemplates($template, $extraTemplates);
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        $this->validateTemplate($template);
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        return $template;
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    }
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    /**
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     * Find and parse template file.
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     *
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     * @param string $templateFileName
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     *
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     * @return array
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     *
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     * @throws BoilerException
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     */
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    protected function findAndParseTemplate(string $templateFileName): array
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    {
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        $templateFile = $this->getTemplate($templateFileName);
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        $pathName = $templateFile->getPathname();
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        $template = $this->parseTemplateFile($pathName);
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        if (!is_array($template)) {
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            throw new BoilerException('Template could not be parsed as a yaml file');
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        }
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        return $template;
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    }
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    /**
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     * Get the template.
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     *
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     * @param string $name
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     *
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     * @return SplFileInfo
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     *
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     * @throws BoilerException
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     */
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    protected function getTemplate(string $name): ?SplFileInfo
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    {
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        foreach ($this->paths as $directory) {
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            $fileInDirectory = $this->findYamlFileInDirectory($name, $directory . '/' . $name);
0 ignored issues
show
Bug introduced by
Are you sure the assignment to $fileInDirectory is correct as $this->findYamlFileInDir...irectory . '/' . $name) targeting Glamorous\Boiler\Helpers...ndYamlFileInDirectory() seems to always return null.

This check looks for function or method calls that always return null and whose return value is assigned to a variable.

class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();

The method getObject() can return nothing but null, so it makes no sense to assign that value to a variable.

The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.

Loading history...
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            if (!is_null($fileInDirectory)) {
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                return $fileInDirectory;
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            }
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            $file = $this->findYamlFileInDirectory($name, $directory);
0 ignored issues
show
Bug introduced by
Are you sure the assignment to $file is correct as $this->findYamlFileInDirectory($name, $directory) targeting Glamorous\Boiler\Helpers...ndYamlFileInDirectory() seems to always return null.

This check looks for function or method calls that always return null and whose return value is assigned to a variable.

class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();

The method getObject() can return nothing but null, so it makes no sense to assign that value to a variable.

The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.

Loading history...
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            if (!is_null($file)) {
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                return $file;
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            }
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        }
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        throw new BoilerException('Boiler-file with name `' . $name . '` does not exists.');
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    }
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    /**
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     * Parse and load yml file from path.
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     *
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     * @param string $path
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     *
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     * @return mixed
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     *
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     * @throws BoilerException
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     */
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    protected function parseTemplateFile(string $path)
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    {
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        try {
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            return Yaml::parseFile($path);
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        } catch (ParseException $exception) {
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            throw new BoilerException(
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                'Template file located at `' . $path . '` could not be parsed',
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                $exception->getCode(),
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                $exception
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            );
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        }
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    }
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    /**
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     * Find a yaml file with correct name in a specified directory.
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     *
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     * @param string $name
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     * @param string $directory
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     *
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     * @return null|SplFileInfo
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     */
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    protected function findYamlFileInDirectory(string $name, string $directory)
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    {
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        if (!is_dir($directory)) {
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            return null;
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        }
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        $name .= '.yml';
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        $finder = new Finder();
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        $finder->files()->name($name)->depth('== 0')->in($directory);
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        foreach ($finder as $file) {
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            if ($file->getFilename() === $name) {
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                return $file;
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            }
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        }
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        return null;
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    }
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    /**
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     * Load included templates.
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     *
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     * @param array $template
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     *
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     * @return array
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     * @throws BoilerException
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     */
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    protected function getIncludedTemplates(array $template): array
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    {
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        if (!array_key_exists('include', $template)) {
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            return [];
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        }
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        if (!is_array($template['include'])) {
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            throw new BoilerException('Include function must be an array.');
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        }
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        return array_map(function ($fileName) {
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            $templateFile = $this->getTemplate($fileName);
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            $template = $this->parseTemplateFile($templateFile->getPathname());
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            if (!$template) {
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                throw new BoilerException('Included file `' . $fileName . '` cannot be parsed');
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            }
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            return $template;
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        }, $template['include']);
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    }
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    /**
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     * Merge the extra template (if there are) with the main template.
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     *
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     * @param array $template
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     * @param array $extraTemplates
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     *
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     * @return array
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     */
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    protected function mergeExtraTemplates(array $template, array $extraTemplates): array
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    {
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        foreach ($extraTemplates as $extraTemplate) {
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            $template = array_merge($template, $extraTemplate);
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        }
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        return $template;
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    }
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    /**
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     * Validate the loaded template-file.
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     *
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     * @param array $template
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     *
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     * @throws BoilerException
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     */
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    protected function validateTemplate(array $template): void
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    {
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        if (!array_key_exists('name', $template) || empty($template['name'])) {
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            throw new BoilerException('There\'s no name defined in the template');
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        }
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        if (!array_key_exists('steps', $template) || !is_array($template['steps']) || empty($template['steps'])) {
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            throw new BoilerException('There are no steps defined in the template');
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        }
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        $this->validateSteps($template);
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    }
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    /**
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     * Internal method to validate the steps.
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     *
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     * @param array $template
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     *
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     * @throws BoilerException
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     */
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    protected function validateSteps(array $template): void
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    {
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        $steps = $template['steps'];
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        foreach ($steps as $step) {
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            if (!array_key_exists($step, $template)) {
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                throw new BoilerException('The step `' . $step . '` does not exists.');
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            }
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            if (!array_key_exists('name', $template[$step])) {
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                throw new BoilerException('No `name` set for the step `' . $step . '`');
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            }
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            if (!array_key_exists('script', $template[$step])) {
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                throw new BoilerException('No `script` set for the step `' . $step . '`');
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            }
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        }
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    }
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}
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