<?php

namespace Configula\Loader;

use Configula\ConfigValues;
use Configula\Exception\ConfigLoaderException;
use Configula\Exception\UnmappedFileExtensionException;
use Error;
use SplFileInfo;

/**
 * File Loader
 *
 * Strategy class to load a file based on its extension
 *
 * @package Configula\Loader
 */
final class FileLoader implements FileLoaderInterface
{
    public const DEFAULT_EXTENSION_MAP = [
        'yml' => YamlFileLoader::class,
        'yaml' => YamlFileLoader::class,
        'json' => JsonFileLoader::class,
        'php' => PhpFileLoader::class,
        'ini' => IniFileLoader::class,
    ];

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

    /** @var array */
    private $extensionMap;

    /**
     * FileLoader constructor.
     *
     * @param string         $filePath
     * @param array|string[] $extensionMap Keys are case-insensitive extensions; values are class names
     */
    public function __construct(string $filePath, array $extensionMap = self::DEFAULT_EXTENSION_MAP)
    {
        $this->extensionMap = $extensionMap;
        $this->filePath = $filePath;
    }

    /**
     * Load config
     *
     * @return ConfigValues
     * @throws ConfigLoaderException  If file is missing, not readable, or if no registered loader for file extension
     */
    public function load(): ConfigValues
    {
        $file = new SplFileInfo($this->filePath);

        if (array_key_exists(strtolower($file->getExtension()), $this->extensionMap)) {
            $className = $this->extensionMap[strtolower($file->getExtension())];

            try {
                return (new $className((string) $file->getRealPath()))->load();
            } catch (Error $e) {
                if (! is_a($className, AbstractFileLoader::class, true)) {
                    throw new ConfigLoaderException(
                        sprintf(
                            'File loader class %s must be instance of %s',
                            $className,
                            AbstractFileLoader::class
                        )
                    );
                } else {
                    throw $e;
                }
            }
        } else {
            throw new UnmappedFileExtensionException(
                sprintf(
                    "Error parsing file (no loader for extension '%s'): %s",
                    $file->getExtension(),
                    (string) $file
                )
            );
        }
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTM5ODk4Nzk1OTkzODQ0NyAxNjU3MDU3OTc3MzE0NTQgOTEyMTI5MjQ1MjY3NzQ1Ng==