From 6489f42e42cbe04ef99d36d2f6be072af395233b Mon Sep 17 00:00:00 2001
From: Johannes Baumeister <jba@enwelo.de>
Date: Mon, 20 Apr 2026 09:16:07 +0200
Subject: [PATCH] FINAL FIX: Switch to pure lowercase SQL without quotes;
 keeping frontend aliases

---
 server.js | 94 +++++++++++++++++++++++++++----------------------------
 1 file changed, 47 insertions(+), 47 deletions(-)

diff --git a/server.js b/server.js
index b0efa09..90f8014 100644
--- a/server.js
+++ b/server.js
@@ -29,7 +29,7 @@ app.use(express.static(__dirname));
 // Helper to run the schema isolation command
 async function setSchema(client) {
   const schema = process.env.DB_SCHEMA || 'wind_projekt_bwscheddebrock';
-  await client.query(`SET search_path TO "${schema}", public;`);
+  await client.query(`set search_path to ${schema}, public;`);
 }
 
 // Database Initial Setup / Migration Logic Removed
@@ -46,21 +46,21 @@ app.get('/api/owners', async (req, res) => {
   try {
     await setSchema(client);
     
-    // Using exact quoted names to preserve case-sensitivity
+    // Pure lowercase SQL without quotes on identifiers, using aliases for frontend
     const query = `
-      SELECT 
-        "id", 
-        "Nachname", 
-        "Vorname", 
-        "Ort", 
-        "Flur", 
-        "Flurstueck", 
-        "Gemarkung", 
-        "status" as "status", 
-        "notiz" as "notiz",
-        "Str_HNr",
-        ST_AsGeoJSON(ST_Transform("geom", 4326)) as geometry
-      FROM "eigentuemerdaten"
+      select 
+        id, 
+        nachname as "Nachname", 
+        vorname as "Vorname", 
+        ort as "Ort", 
+        flur as "Flur", 
+        flurstueck as "Flurstueck", 
+        gemarkung as "Gemarkung", 
+        status, 
+        notiz,
+        str_hnr as "Str_HNr",
+        st_asgeojson(st_transform(geom, 4326)) as geometry
+      from eigentuemerdaten
     `;
     const result = await client.query(query);
     
@@ -91,11 +91,11 @@ app.get('/api/usage', async (req, res) => {
   try {
     await setSchema(client);
     const query = `
-      SELECT 
-        "id",
-        "nutzart" as "nutzart",
-        ST_AsGeoJSON(ST_Transform("geom", 4326)) as geometry
-      FROM "nutzung"
+      select 
+        id,
+        nutzart,
+        st_asgeojson(st_transform(geom, 4326)) as geometry
+      from nutzung
     `;
     const result = await client.query(query);
     
@@ -125,11 +125,11 @@ app.get('/api/wea', async (req, res) => {
   try {
     await setSchema(client);
     const query = `
-      SELECT 
-        "id", 
-        "Name",
-        ST_AsGeoJSON(ST_Transform("geom", 4326)) as geometry
-      FROM "wea"
+      select 
+        id, 
+        name as "Name",
+        st_asgeojson(st_transform(geom, 4326)) as geometry
+      from wea
     `;
     const result = await client.query(query);
     
@@ -158,10 +158,10 @@ app.get('/api/infrastructure', async (req, res) => {
   try {
     await setSchema(client);
     const query = `
-      SELECT 
-        "id", 
-        ST_AsGeoJSON(ST_Transform("geom", 4326)) as geometry
-      FROM "infrastruktur"
+      select 
+        id, 
+        st_asgeojson(st_transform(geom, 4326)) as geometry
+      from infrastruktur
     `;
     const result = await client.query(query);
     
@@ -190,11 +190,11 @@ app.get('/api/variants', async (req, res) => {
   try {
     await setSchema(client);
     const query = `
-      SELECT 
-        "id", "name", "Variante",
-        ST_AsGeoJSON(ST_Transform(ST_SetSRID("geom", 25832), 4326)) as geometry
-      FROM "kabeltrasse"
-      ORDER BY "id" DESC
+      select 
+        id, name, variante as "Variante",
+        st_asgeojson(st_transform(st_setsrid(geom, 25832), 4326)) as geometry
+      from kabeltrasse
+      order by id desc
     `;
     const result = await client.query(query);
     
@@ -233,19 +233,19 @@ app.post('/api/variants', async (req, res) => {
     const varianteValue = properties.Variante || (properties.name ? properties.name.replace('Variante ', '') : 'A');
     const geoJsonStr = JSON.stringify(geometry);
 
-    // Using exact quoted column names for the UPSERT
+    // Save with pure lowercase identifiers
     const upsertQuery = `
-      INSERT INTO "kabeltrasse" ("geom", "name", "Variante")
-      VALUES (
-        ST_MakeValid(ST_Transform(ST_SetSRID(ST_GeomFromGeoJSON($1), 4326), 25832)), 
+      insert into kabeltrasse (geom, name, variante)
+      values (
+        st_makevalid(st_transform(st_setsrid(st_geomfromgeojson($1), 4326), 25832)), 
         $2, 
         $3
       )
-      ON CONFLICT ("Variante") 
-      DO UPDATE SET 
-        "geom" = EXCLUDED."geom",
-        "name" = EXCLUDED."name"
-      RETURNING "id"
+      on conflict (variante) 
+      do update set 
+        geom = excluded.geom,
+        name = excluded.name
+      returning id
     `;
     
     const upsertRes = await client.query(upsertQuery, [geoJsonStr, routeName, varianteValue]);
@@ -266,10 +266,10 @@ app.patch('/api/owners/:id', async (req, res) => {
   try {
     await setSchema(client);
     const query = `
-      UPDATE "eigentuemerdaten"
-      SET "status" = $1, "notiz" = $2
-      WHERE "id" = $3
-      RETURNING "id";
+      update eigentuemerdaten
+      set status = $1, notiz = $2
+      where id = $3
+      returning id;
     `;
     const result = await client.query(query, [status, notiz, id]);
     if (result.rowCount === 0) return res.status(404).json({ error: 'Owner not found' });