<?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:----NjM2MDAxMjkxMjI5Mzk3NCA1OTM1MDk4NTUzMTE4MDc2IDI4ODE1NTA0NTYxNzc3MTY=