Added command for publishing translations

Author: Ilya Sakovich

.gitattributes

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+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.styleci.yml export-ignore

.gitignore

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+vendor
+composer.lock

.styleci.yml

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+preset: laravel

CONTRIBUTING.md

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+# Contributing
+
+Contributions are **welcome** and will be fully **credited**.
+
+Please read and understand the contribution guide before creating an issue or pull request.
+
+## Requirements
+
+If the project maintainer has any additional requirements, you will find them listed here.
+
+
+- **[PSR-2 Coding Standard.](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)** The easiest way to apply the conventions is to install [PHP CS Fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer).
+- **Add tests!** Your patch won't be accepted if it doesn't have tests.
+- **Document any change in behaviour.** Make sure the `README.md` and any other relevant documentation are kept up-to-date.
+- **Consider our release cycle.** We try to follow [SemVer v2.0.0](http://semver.org/). Randomly breaking public APIs is not an option.
+- **Create feature branches.** Don't ask us to pull from your master branch.
+- **One pull request per feature.** If you want to do more than one thing, send multiple pull requests.
+- **Send coherent history.** Make sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please [squash them](http://www.git-scm.com/book/en/v2/Git-Tools-Rewriting-History#Changing-Multiple-Commit-Messages) before submitting.
+
+**Happy coding!**

LICENSE.md

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+MIT License
+
+Copyright (c) 2018 Coderello
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

composer.json

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+{
+    "name": "coderello/laravel-nova-lang",
+    "description": "Language support for Laravel Nova.",
+    "keywords": ["laravel", "nova", "language", "lang", "support"],
+    "type": "library",
+    "license": "MIT",
+    "require": {
+        "php": ">=7.1",
+        "laravel/framework": "5.5.*|5.6.*"
+    },
+    "autoload": {
+        "psr-4": {
+            "Coderello\\LaravelNovaLang\\": "src/"
+        }
+    },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "Coderello\\LaravelNovaLang\\Providers\\LaravelNovaLangServiceProvider"
+            ]
+        }
+    }
+}

src/Commands/NovaLangPublish.php

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+<?php
+
+namespace Coderello\LaravelNovaLang\Commands;
+
+use Illuminate\Console\Command;
+use Illuminate\Filesystem\Filesystem;
+use Illuminate\Support\Collection;
+use SplFileInfo;
+
+class NovaLangPublish extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'nova-lang:publish
+                            {locales : Comma separated list of languages}
+                            {--force : Override existing files}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Publish Laravel Nova language files to resource folder.';
+
+    /**
+     * @var Filesystem
+     */
+    protected $filesystem;
+
+    /**
+     * Create a new command instance.
+     *
+     * @param Filesystem $filesystem
+     */
+    public function __construct(Filesystem $filesystem)
+    {
+        $this->filesystem = $filesystem;
+
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $availableLocales = $this->getAvailableLocales();
+
+        $this->getRequestedLocales()->each(function (string $locale) use ($availableLocales) {
+            if (! $availableLocales->contains($locale)) {
+                $this->error(sprintf('Unfortunately, translations for [%s] locale doesn\'t exist. Feel free to send a PR to add them and help other people :)', $locale));
+
+                return;
+            }
+
+            $inputDirectory = $this->directoryFrom().'/'.$locale;
+
+            $outputDirectory = $this->directoryTo().'/'.$locale;
+
+            $inputFile = $inputDirectory.'.json';
+
+            $outputFile = $outputDirectory.'.json';
+
+            if (($this->filesystem->exists($outputDirectory)
+                || $this->filesystem->exists($outputFile))
+                && ! $this->isForce()) {
+                $this->error(sprintf('Translations for [%s] locale already exist.', $locale));
+
+                return;
+            }
+
+            $this->filesystem->makeDirectory($outputDirectory, 0777, true, true);
+
+            $this->filesystem->copyDirectory($inputDirectory, $outputDirectory);
+
+            $this->filesystem->copy($inputFile, $outputFile);
+
+            $this->info(sprintf('Translations for [%s] locale have been published successfully.', $locale));
+        });
+    }
+
+    protected function getRequestedLocales(): Collection
+    {
+        return collect(explode(',', $this->argument('locales')));
+    }
+
+    protected function getAvailableLocales(): Collection
+    {
+        $localesByDirectories = collect($this->filesystem->directories($this->directoryFrom()))
+            ->map(function (string $path) {
+                return $this->filesystem->name($path);
+            });
+
+        $localesByFiles = collect($this->filesystem->files($this->directoryFrom()))
+            ->map(function (SplFileInfo $splFileInfo) {
+                return str_replace('.'.$splFileInfo->getExtension(), '', $splFileInfo->getFilename());
+            });
+
+        return $localesByDirectories->intersect($localesByFiles)->values();
+    }
+
+    protected function isForce(): bool
+    {
+        return $this->option('force');
+    }
+
+    protected function directoryFrom(): string
+    {
+        return base_path('vendor/coderello/laravel-nova-lang/resources/lang');
+    }
+
+    protected function directoryTo(): string
+    {
+        return resource_path('lang/vendor/nova');
+    }
+}

src/Providers/LaravelNovaLangServiceProvider.php

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+<?php
+
+namespace Coderello\LaravelNovaLang\Providers;
+
+use Coderello\LaravelNovaLang\Commands\NovaLangPublish;
+use Illuminate\Support\ServiceProvider;
+
+class LaravelNovaLangServiceProvider extends ServiceProvider
+{
+    /**
+     * Bootstrap any application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        //
+    }
+
+    /**
+     * Register any application services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        $this->app->singleton('command.publish.nova-lang', NovaLangPublish::class);
+        $this->commands([
+            'command.publish.nova-lang',
+        ]);
+    }
+}