Meine Änderungen

backend/db/settings.js

@@ -0,0 +1,71 @@
+import { db } from './index.js';
+
+const CREATE_TABLE_SQL = `
+  CREATE TABLE IF NOT EXISTS settings (
+    key TEXT PRIMARY KEY,
+    value TEXT,
+    updated_at TEXT DEFAULT CURRENT_TIMESTAMP
+  )
+`;
+
+db.prepare(CREATE_TABLE_SQL).run();
+
+const getSettingStmt = db.prepare('SELECT key, value, updated_at FROM settings WHERE key = ?');
+const setSettingStmt = db.prepare(`
+  INSERT INTO settings (key, value, updated_at)
+  VALUES (@key, @value, CURRENT_TIMESTAMP)
+  ON CONFLICT(key) DO UPDATE SET
+    value = excluded.value,
+    updated_at = CURRENT_TIMESTAMP
+`);
+const deleteSettingStmt = db.prepare('DELETE FROM settings WHERE key = ?');
+
+export function getSetting(key) {
+  try {
+    return getSettingStmt.get(key) || null;
+  } catch (err) {
+    console.error(`❌ [Settings] Fehler beim Lesen des Settings "${key}":`, err.message);
+    return null;
+  }
+}
+
+export function setSetting(key, value) {
+  try {
+    setSettingStmt.run({ key, value });
+    return true;
+  } catch (err) {
+    console.error(`❌ [Settings] Fehler beim Speichern des Settings "${key}":`, err.message);
+    return false;
+  }
+}
+
+export function deleteSetting(key) {
+  try {
+    deleteSettingStmt.run(key);
+    return true;
+  } catch (err) {
+    console.error(`❌ [Settings] Fehler beim Löschen des Settings "${key}":`, err.message);
+    return false;
+  }
+}
+
+export function getJsonSetting(key, defaultValue = null) {
+  const row = getSetting(key);
+  if (!row || row.value === null || row.value === undefined) return defaultValue;
+  try {
+    return JSON.parse(row.value);
+  } catch (err) {
+    console.warn(`⚠️ [Settings] Konnte JSON für Setting "${key}" nicht parsen:`, err.message);
+    return defaultValue;
+  }
+}
+
+export function setJsonSetting(key, value) {
+  try {
+    const payload = value === undefined ? null : JSON.stringify(value);
+    return setSetting(key, payload);
+  } catch (err) {
+    console.error(`❌ [Settings] Fehler beim Serialisieren von Setting "${key}":`, err.message);
+    return false;
+  }
+}