First commit

.docker/apache2/config/000-default.dev.conf

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+<VirtualHost *:80>
+    DocumentRoot /var/www/html
+	ServerAdmin Chris@ChrisKankiewicz.com
+
+	LogLevel debug
+
+	ErrorLog /dev/stderr
+	CustomLog /dev/stderr combined
+</VirtualHost>

.docker/apache2/config/000-default.prd.conf

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+<VirtualHost *:80>
+    DocumentRoot /var/www/html
+	ServerAdmin Chris@ChrisKankiewicz.com
+
+	LogLevel warn
+
+	ErrorLog /dev/stderr
+	CustomLog /dev/stderr combined
+</VirtualHost>

.docker/php/config/php.dev.ini

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+[PHP]
+error_reporting = E_ALL
+log_errors = On
+memory_limit = -1

.docker/php/config/php.prd.ini

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+[PHP]
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
+log_errors = On
+memory_limit = -1
+
+[opcache]
+opcache.enable = 1
+opcache.fast_shutdown = 1
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 10000
+opcache.memory_consumption = 128
+opcache.optimization_level = 0xffffffff
+opcache.validate_timestamps = 0
+
+[xdebug]
+xdebug.profiler_enable = 0
+xdebug.remote_autostart = 0
+xdebug.remote_enable = 0

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.json]
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2
+indent_style = space
+
+[Makefile]
+indent_size = 4
+indent_style = tab

.gitignore

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+.php_cs.cache
+.phpunit.result.cache
+/vendor/

.htaccess

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+<IfModule mod_rewrite.c>
+    RewriteEngine On
+
+    # Redirect Trailing Slashes If Not A Folder...
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteCond %{REQUEST_URI} (.+)/$
+    RewriteRule ^ %1 [L,R=301]
+
+    # Handle Front Controller...
+    RewriteCond %{REQUEST_FILENAME} !-f
+    RewriteRule ^ index.php [L]
+</IfModule>

.php_cs.dist

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+<?php
+
+$finder = PhpCsFixer\Finder::create()->in([
+    __DIR__ . DIRECTORY_SEPARATOR . 'app',
+    __DIR__ . DIRECTORY_SEPARATOR . 'tests'
+]);
+
+return PhpCsFixer\Config::create()->setRules([
+    '@PSR1' => true,
+    '@PSR2' => true,
+    '@Symfony' => true,
+    'array_indentation' => true,
+    'array_syntax' => [
+        'syntax' => 'short'
+    ],
+    'concat_space' => [
+        'spacing' => 'one'
+    ],
+    'linebreak_after_opening_tag' => true,
+    'new_with_braces' => false,
+    'no_multiline_whitespace_before_semicolons' => true,
+    'no_useless_else' => true,
+    'no_useless_return' => true,
+    'not_operator_with_successor_space' => true,
+    'phpdoc_to_comment' => false,
+    'phpdoc_no_empty_return' => false,
+    'phpdoc_order' => true,
+    'semicolon_after_instruction' => true,
+    'single_trait_insert_per_statement' => false,
+    'trailing_comma_in_multiline_array' => false,
+    'yoda_style' => null
+])->setFinder($finder);

Dockerfile

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+# Install PHP dependencies
+FROM composer:1.9 AS php-dependencies
+COPY . /app
+RUN composer install --working-dir /app --ignore-platform-reqs \
+    --no-cache --no-dev --no-interaction
+
+# Install and compile JavaScript assets
+# FROM node:12.10 AS js-dependencies
+# ARG FONT_AWESOME_TOKEN
+# COPY --from=php-dependencies /app /app
+# RUN npm config set "@fortawesome:registry" https://npm.fontawesome.com/
+# RUN npm config set "//npm.fontawesome.com/:_authToken" ${FONT_AWESOME_TOKEN}
+# RUN cd /app && npm install && npm run production
+
+# Build application image
+FROM php:7.3-apache as application
+LABEL maintainer="Chris Kankiewicz <ckankiewicz@freedomdebtrelief.com>"
+
+COPY --from=php-dependencies /app /var/www/html
+
+RUN a2enmod rewrite
+
+# Build (local) development image
+FROM application as development
+COPY ./.docker/php/config/php.dev.ini /usr/local/etc/php/php.ini
+COPY ./.docker/apache2/config/000-default.dev.conf /etc/apache2/sites-available/000-default.conf
+RUN pecl install xdebug && docker-php-ext-enable xdebug
+
+# Build production image
+FROM application as production
+COPY ./.docker/php/config/php.prd.ini /usr/local/etc/php/php.ini
+COPY ./.docker/apache2/config/000-default.prd.conf /etc/apache2/sites-available/000-default.conf
+RUN docker-php-ext-install opcache

Makefile

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+clear-cache:
+	@rm cache/* -rfv

app/Controllers/DirectoryController.php

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+<?php
+
+namespace PHLAK\DirectoryLister\Controllers;
+
+use PHLAK\DirectoryLister\DirectoryLister;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use Slim\Views\Twig;
+
+class DirectoryController
+{
+    public function __invoke(Request $request, Response $response, Twig $view, string $path = '.')
+    {
+        return $view->render($response, 'index.twig', [
+            // TODO: Sort the file listing
+            'files' => new DirectoryLister($path)
+        ]);
+    }
+}

app/DirectoryLister.php

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+<?php
+
+namespace PHLAK\DirectoryLister;
+
+use DirectoryIterator;
+use FilterIterator;
+
+class DirectoryLister extends FilterIterator
+{
+    public function __construct(string $path)
+    {
+        parent::__construct(
+            new DirectoryIterator($path)
+        );
+    }
+
+    public function accept()
+    {
+        if ($this->getInnerIterator()->current()->isDot()) {
+            return false;
+        }
+
+        return true;
+    }
+}

composer.json

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+{
+    "name": "phlak/directory-lister",
+    "description": "PHP directory lister",
+    "type": "project",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Chris Kankiewicz",
+            "email": "Chris@ChrisKankiewicz.com"
+        }
+    ],
+    "require": {
+        "php": ">=7.1",
+        "php-di/php-di": "^6.0",
+        "php-di/slim-bridge": "^3.0",
+        "slim/psr7": "^0.6.0",
+        "slim/slim": "^4.3",
+        "slim/twig-view": "3.0.0-beta"
+    },
+    "require-dev": {
+        "friendsofphp/php-cs-fixer": "^2.3",
+        "phpunit/phpunit": "^7.0 || ^8.0",
+        "psy/psysh": "^0.9.9"
+    },
+    "autoload": {
+        "psr-4": {
+            "PHLAK\\DirectoryLister\\": "app/"
+        }
+    },
+    "config": {
+        "sort-packages": true,
+        "optimize-autoloader": true
+    }
+}

docker-compose.yaml

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+version: '3.4'
+
+services:
+  app:
+    container_name: directory-lister-app
+    build:
+      context: .
+      target: development
+    environment:
+      VIRTUAL_HOST: directorylister.local
+    volumes:
+      - ./:/var/www/html
+      # - ./.docker/php/config/php.dev.ini:/usr/local/etc/php/php.ini
+      # - ./.docker/apache2/config/000-default.dev.conf:/etc/apache2/sites-available/000-default.conf
+    restart: unless-stopped
+
+networks:
+  default:
+    external:
+      name: development

index.php

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+<?php
+
+use DI\Container;
+use DI\Bridge\Slim\Bridge;
+use PHLAK\DirectoryLister\Controllers;
+use Slim\Views\Twig;
+use Slim\Views\TwigMiddleware;
+
+require __DIR__ . '/vendor/autoload.php';
+
+$container = new Container();
+$container->set(Twig::class, new Twig('themes/default', ['cache' => 'cache']));
+
+$app = Bridge::create($container);
+$app->add(TwigMiddleware::createFromContainer($app, Twig::class));
+
+$app->get('/[{path:.*}]', Controllers\DirectoryController::class);
+
+$app->run();

themes/default/index.twig

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+{% for file in files %}
+    &bull; {{ file.fileName }}<br>
+{% endfor %}