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custom/apps/fx-rates/src/Infrastructure/ConnectionFactory.php

@@ -0,0 +1,42 @@
+<?php
+declare(strict_types=1);
+
+namespace Modules\FxRates\Infrastructure;
+
+use App\PdoFactory;
+use RuntimeException;
+use PDO;
+
+final class ConnectionFactory
+{
+    public static function make(SettingsStore $settingsStore): PDO
+    {
+        $settings = $settingsStore->load();
+        $useSeparateDb = !empty($settings['use_separate_db']);
+
+        if ($useSeparateDb) {
+            $dbConfig = is_array($settings['db'] ?? null) ? $settings['db'] : [];
+            if ($dbConfig === []) {
+                throw new RuntimeException('Custom-Datenbank ist aktiviert, aber nicht vollstaendig konfiguriert.');
+            }
+            self::assertSupportedDriver($dbConfig);
+            return PdoFactory::createFromArray($dbConfig);
+        }
+
+        $dbConfig = app()->config()->dbConfig;
+        if ($dbConfig === []) {
+            throw new RuntimeException('Projekt-Datenbankkonfiguration fehlt in config/db_settings_basic.php.');
+        }
+
+        self::assertSupportedDriver($dbConfig);
+        return PdoFactory::createFromArray($dbConfig);
+    }
+
+    private static function assertSupportedDriver(array $dbConfig): void
+    {
+        $driver = strtolower((string) ($dbConfig['driver'] ?? ($dbConfig['dsn'] ?? '')));
+        if ($driver !== '' && !in_array($driver, ['mysql', 'pgsql', 'sqlite'], true) && !str_starts_with($driver, 'mysql:') && !str_starts_with($driver, 'pgsql:') && !str_starts_with($driver, 'sqlite:')) {
+            throw new RuntimeException('FX-Rates unterstuetzt aktuell MySQL/MariaDB, PostgreSQL und SQLite.');
+        }
+    }
+}