<?php

namespace App\Console\Commands\Modules;

use Illuminate\Console\Command;
use Illuminate\Support\Str;

class CreateNew extends Command
{
    /**
     * The name and signature of the console command.
     * @var string
     */
    protected $signature = 'module:new 
    {name : module name} 
    {parentModule? : name of parent module} 
    {--entity= : entity}';
    /**
     * The console command description.
     * @var string
     */
    protected $description = 'Create new CMS module.';
    protected $moduleName;
    protected $moduleNamespace;
    protected $entity;
    protected $entityNamespace;

    /**
     * Execute the console command.
     */
    public function handle()
    {
        $defaultEntityNamespace = $this->loadArguments();
        $path = preg_replace('|/{2,}|i', '/', config('modules.paths.modules') . '/' . $this->moduleNamespace);

        if (is_dir($path)) {
            $this->error('Module already exists in ' . $path);
            return;
        }

        // copy stub files
        \File::copyDirectory(config('modules.paths.stubs'), $path);

        $files = \File::allFiles($path);
        foreach ($files as $file) {
            $newName = str_replace('stub', 'php', $this->replacePlaceholders($file->getPathname()));

            // ignore new entity when using existing entity
            if ($this->entityNamespace != $defaultEntityNamespace && Str::contains('Entities', $file)) {
                \File::delete($file);
                continue;
            }

            // rename file
            \File::move($file, $newName);

            // change its content
            $content = file_get_contents($newName);
            $content = $this->replacePlaceholders($content);
            file_put_contents($newName, $content);
        }

        $this->info('Module successfully created.');
    }

    /**
     * Find and replace all placeholders in given content
     *
     * @param $content
     *
     * @return mixed
     */
    private function replacePlaceholders($content)
    {
        $replace = [
            '$Module$'          => $this->moduleName,
            '$ModuleNamespace$' => str_replace('/', '\\', $this->moduleNamespace),
            '$module$'          => strtolower($this->moduleName),
            '$EntityNamespace$' => $this->entityNamespace,
            '$Entity$'          => $this->entity
        ];

        foreach ($replace as $what => $for) {
            $content = str_replace($what, $for, $content);
        }

        return $content;
    }

    /**
     * Load command arguments
     * @return string
     */
    private function loadArguments()
    {
        $parent = $this->argument('parentModule');
        $this->moduleName = $moduleName = $this->argument('name');
        $this->moduleNamespace = trim($parent . '/' . $moduleName, '/');

        $entity = $this->option('entity');

        $defaultEntityNamespace = '\\Modules\\' . str_replace('/', '\\', $this->moduleNamespace) . '\Entities\\';

        if (!empty($entity)) {
            $parts = explode('\\', $entity);
            $this->entity = $parts[count($parts) - 1];
            unset($parts[count($parts) - 1]);
            $this->entityNamespace = implode('\\', $parts);
        } else {
            $this->entityNamespace = $defaultEntityNamespace;
            $this->entity = $this->moduleName;
        }

        return $defaultEntityNamespace;
    }
}