<?php

namespace App\Providers;

use App\Models\Module;
use Illuminate\Support\ServiceProvider;

class ModuleManager extends ServiceProvider
{
    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
        // this service provider needs published config - config is merged right after this service provider
        $modules = Module::get();

        // iterate over all modules and enable or disable them
        foreach ($modules as $module) {
            $this->createModulesJson($module);
        }
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
    }

    /**
     * Read config file and merge it with module config in database.
     *
     * This method REQUIRES published config of given module (otherwise config(modulename) is not available)!
     *
     * @param Module $module
     *
     * @throws \ErrorException when module.json is not writable
     */
    private function createModulesJson(Module $module)
    {
        $data = config($module->alias);
        $data['active'] = $module->enabled;

        // path to module.json
        $path = config('modules.paths.modules') . DIRECTORY_SEPARATOR . $data['name'] . DIRECTORY_SEPARATOR . 'module.json';

        if (!is_writable($path)) {
            throw new \ErrorException('Cannot write to ' . $path . '. Module ' . $data['name'] . ' cannot be enabled.');
        }

        // create file
        file_put_contents($path, json_encode($data));
    }
}