<?php

namespace Configula\Loader;

use Configula\ConfigLoaderInterface;
use Configula\ConfigValues;
use InvalidArgumentException;
use SplFileInfo;

/**
 * Class CascadingLoader
 *
 * @package FandF\Config
 */
class CascadingConfigLoader implements ConfigLoaderInterface
{
    /** @var iterable|ConfigLoaderInterface[] */
    private $loaders;

    /**
     * Pass in an iterable list of multiple loaders, file names, or arrays of values
     *
     * @param  iterable|array[]|string[]|SplFileInfo[]|ConfigLoaderInterface[] $items
     * @return CascadingConfigLoader
     */
    public static function build(iterable $items): CascadingConfigLoader
    {
        foreach ($items as $item) {
            switch (true) {
                case $item instanceof ConfigLoaderInterface:
                    $loaders[] = $item;
                    break;
                case is_array($item):
                    $loaders[] = new ArrayValuesLoader($item);
                    break;
                case is_string($item) && file_exists($item):
                    $loaders[] = new FileLoader($item);
                    break;
                case $item instanceof SplFileInfo:
                    $loaders[] = ($item->isDir()) ? new FolderLoader($item) : new FileLoader((string) $item);
                    break;
                default:
                    throw new InvalidArgumentException(sprintf(
                        'Invalid config source (allowed: array, string (filepath), \SplFileInfo, or config loader): %s',
                        gettype($item)
                    ));
            }
        }

        return new static($loaders ?? []);
    }

    /**
     * CascadingLoader constructor.
     *
     * @param iterable|ConfigLoaderInterface[] $loaders Loaders, in the order that you want to load them
     */
    final public function __construct(iterable $loaders)
    {
        $this->loaders = $loaders;
    }

    /**
     * Load config
     *
     * @return ConfigValues
     */
    public function load(): ConfigValues
    {
        $config = new ConfigValues([]);

        foreach ($this->loaders as $loader) {
            $config = $config->merge($loader->load());
        }

        return $config;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTk2OTgyMzEzMTg0NzM0MyAxMTAzMzA2ODUyMjY3MjQ5IDM0MTc0NDM4MjY3NTgxMjY=