<?php


namespace Lean;

use Psr\Container\ContainerInterface;

class Lean
{
    const DEFAULT_PICEA_CONTEXT  = __NAMESPACE__;

    protected ContainerInterface $container;

    public array $applications = [];

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;

        $this->loadApplications();
    }

    protected function loadApplications() : void
    {
        $list = $this->container->get('config')['lean']['autoload'] ?? [];

        if (! $list ) {
            throw new \Exception("You must provide at least one application to autoload within your config file ( 'lean' => 'autoload' => [] )");
        }

        foreach(array_filter($list) as $application) {
            if ( $this->container->has($application) ) {
                $this->applications[] = ( new Application() )->fromArray($this->container->get($application));
            }
            else {
                throw new \RuntimeException("Trying to load an application '$application' which have not been configured yet");
            }
        }
    }

    public function getPiceaContext() : string
    {
        foreach(array_reverse($this->applications) as $apps) {
            if ( $apps->piceaContext ?? null ) {
                return $apps->piceaContext;
            }
        }

        return static::DEFAULT_PICEA_CONTEXT;
    }

    public function getPiceaExtensions() : array
    {
        $list = [];

        foreach(array_reverse($this->applications) as $apps) {
            if ( $apps->piceaExtensions ?? null ) {
                $list = array_merge($list, $apps->piceaExtensions);
            }
        }

        return $list;
    }

    public function getRoutable() : array
    {
        return array_merge(...array_map(fn($app) => $app->routes ?? [], $this->applications));
    }

    public function getEntities() : array
    {
        return array_merge(...array_map(fn($app) => $app->entities ?? [], $this->applications));
    }

    public function getViewPaths() : array
    {
        $list = array_merge(...array_map(fn($app) => $app->views ?? [], $this->applications));

        uasort($list, fn($i1, $i2) => $i1['order'] <=> $i2['order'] );

        return $list;
    }

    public function getI18n(string $reader) : ? array
    {
        switch($reader) {
            case "php":
                $list = array_merge(...array_map(fn($app) => $app->tellPhp ?? [], $this->applications));
            break;

            case "json":
                $list = array_merge(...array_map(fn($app) => $app->tellJson ?? [], $this->applications));
            break;
        }

        if ( $list ?? false ) {
            uasort($list, fn($i1, $i2) => $i2['order'] <=> $i1['order']);

            return array_map(fn($item) => $item['path'], $list);
        }

        return null;
    }

    public static function definitions() : array
    {
        $path = dirname(__DIR__) . "/meta/definitions/";

        return array_merge(
            require($path . "http.php"),
            require($path . "language.php"),
            require($path . "routes.php"),
            require($path . "software.php"),
            require($path . "template.php"),
        );
    }
}