<?php

declare(strict_types=1);

use App\Api\PasswordController;
use Slim\App;
use Slim\Interfaces\RouteCollectorProxyInterface as Group;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;

return function (App $app) {
    // Serve static frontend
    $app->get('/', function (Request $request, Response $response, $args) {
        $html = file_get_contents(__DIR__ . '/../templates/index.html');
        $response->getBody()->write($html);
        return $response->withHeader('Content-Type', 'text/html');
    });

    // API routes
    $app->group('/api/v1', function (Group $group) {
        // Password generation endpoints
        $group->get('/passwords', PasswordController::class . ':getPasswordTypes');
        $group->get('/passwords/generators', PasswordController::class . ':getGenerators');
        $group->post('/passwords/generate', PasswordController::class . ':generatePasswords');

        // NEW: Available wordlists endpoint for dynamic language dropdown
        $group->get('/passwords/wordlists', PasswordController::class . ':getAvailableWordlists');

        // Health check
        $group->get('/health', function (Request $request, Response $response) {
            $response->getBody()->write(json_encode([
                'status' => 'healthy',
                'version' => $_ENV['APP_VERSION'] ?? '1.0.0',
                'timestamp' => date('c')
            ]));
            return $response->withHeader('Content-Type', 'application/json');
        });

        // Updated locales endpoint with fixed pattern validation
        $group->get('/locales/{lang:[A-Za-z_]+}', function (Request $request, Response $response, array $args) {
            $lang = $args['lang'];

            // Updated supported languages list to match frontend and wordlists
            $supportedLangs = ['en', 'de', 'de_CH', 'fr', 'it', 'es', 'pt', 'ja', 'zh'];

            if (!in_array($lang, $supportedLangs, true)) {
                $lang = 'en'; // fallback
            }

            // Preserve Swiss German locale when available, otherwise fall back to German
            if ($lang === 'ch') {
                $lang = 'de';
            }
            if ($lang === 'de_CH' && !file_exists(__DIR__ . '/../locales/de_CH.json')) {
                $lang = 'de';
            }

            $path = __DIR__ . "/../locales/{$lang}.json";
            if (!file_exists($path)) {
                return $response->withStatus(404);
            }

            $content = file_get_contents($path);
            $response->getBody()->write($content);
            return $response->withHeader('Content-Type', 'application/json');
        });
    });

    /*
    // API documentation
    $app->get('/docs', function (Request $request, Response $response, $args) {
        $html = file_get_contents(__DIR__ . '/../templates/docs.html');
        $response->getBody()->write($html);
        return $response->withHeader('Content-Type', 'text/html');
    });
    */

    // Serve static assets
    $app->get('/assets/{type}/{file}', function (Request $request, Response $response, array $args) {
        $type = $args['type'];
        $file = $args['file'];
        $path = __DIR__ . "/../assets/{$type}/{$file}";

        if (!file_exists($path)) {
            return $response->withStatus(404);
        }

        $content = file_get_contents($path);
        $contentType = $type === 'css' ? 'text/css' : 'application/javascript';

        $response->getBody()->write($content);
        return $response->withHeader('Content-Type', $contentType);
    });

    // Serve locale files directly with improved pattern matching
    $app->get('/locales/{file:[A-Za-z_]+\.json}', function (Request $request, Response $response, array $args) {
        $file = $args['file'];
        $path = __DIR__ . "/../locales/{$file}";

        if (!file_exists($path)) {
            return $response->withStatus(404);
        }

        $content = file_get_contents($path);
        $response->getBody()->write($content);
        return $response->withHeader('Content-Type', 'application/json');
    });

    // Main documentation route (English - default)
    $app->get('/docs', function ($request, $response) {
        $docFile = __DIR__ . '/../docs/index.html';

        if (file_exists($docFile)) {
            $response->getBody()->write(file_get_contents($docFile));
            return $response->withHeader('Content-Type', 'text/html; charset=utf-8');
        } else {
            return $response->withStatus(404)->write('Documentation not found');
        }
    });

    // Language-specific documentation routes  
    $app->get('/docs-{lang}', function ($request, $response, array $args) {
        $lang = $args['lang'];

        // Allowed languages
        $allowedLanguages = ['de', 'fr', 'es', 'it', 'ja', 'zh'];

        if (!in_array($lang, $allowedLanguages)) {
            return $response->withStatus(302)->withHeader('Location', '/docs');
        }

        $docFile = __DIR__ . "/../docs/docs-{$lang}.html";

        if (file_exists($docFile)) {
            $response->getBody()->write(file_get_contents($docFile));
            return $response->withHeader('Content-Type', 'text/html; charset=utf-8');
        } else {
            // Fallback to English
            $fallbackFile = __DIR__ . '/../docs/index.html';
            if (file_exists($fallbackFile)) {
                $response->getBody()->write(file_get_contents($fallbackFile));
                return $response->withHeader('Content-Type', 'text/html; charset=utf-8');
            } else {
                return $response->withStatus(404)->write('Documentation not found');
            }
        }
    });

    // Static assets for documentation
    $app->get('/docs/assets/{type}/{file}', function ($request, $response, array $args) {
        $type = $args['type'];
        $file = $args['file'];

        // Security: prevent directory traversal
        if (strpos($file, '..') !== false || strpos($type, '..') !== false) {
            return $response->withStatus(403)->write('Access denied');
        }

        $assetFile = __DIR__ . "/../docs/assets/{$type}/{$file}";

        if (file_exists($assetFile)) {
            $mimeTypes = [
                'css' => 'text/css',
                'js' => 'application/javascript',
                'png' => 'image/png',
                'jpg' => 'image/jpeg',
                'svg' => 'image/svg+xml'
            ];

            $extension = pathinfo($file, PATHINFO_EXTENSION);
            $mimeType = $mimeTypes[$extension] ?? 'text/plain';

            $response->getBody()->write(file_get_contents($assetFile));
            return $response->withHeader('Content-Type', $mimeType);
        } else {
            return $response->withStatus(404)->write('Asset not found');
        }
    });
};