From f95ee85aacfa2c6755cfea614dd35d1fff4cc223 Mon Sep 17 00:00:00 2001
From: Johannes Baumeister <jba@enwelo.de>
Date: Thu, 28 May 2026 16:59:07 +0200
Subject: [PATCH] feat: Artennachweis Layer integriert

---
 app.js    | 43 ++++++++++++++++++++++++++++++++++++++++++-
 server.js | 27 +++++++++++++++++++++++++++
 style.css | 19 +++++++++++++++++++
 3 files changed, 88 insertions(+), 1 deletion(-)

diff --git a/app.js b/app.js
index e0a7d14..13a52df 100644
--- a/app.js
+++ b/app.js
@@ -1112,7 +1112,48 @@ document.addEventListener('DOMContentLoaded', async () => {
                 document.getElementById('statusInfo').innerHTML += ` | <span style="color: #ff8800;">ALKIS-Layer Fehler</span>`;
             }
 
-            statusEl.innerText = "Layer geladen (ALKIS DB integriert).";
+            // Artennachweis laden
+            console.log("Lade Artennachweis-Layer aus Datenbank...");
+            const artenResp = await fetch('/api/layers/artennachweis').catch(err => {
+                console.error("Netzwerkfehler beim Laden des Artennachweis-Layers:", err);
+                return null;
+            });
+
+            if (artenResp?.ok) {
+                const data = await artenResp.json();
+                console.log(`Artennachweis API: ${data.features ? data.features.length : 0} Features erhalten.`);
+                if (data.features && data.features.length > 0) {
+                    const artenLayer = L.geoJSON(data, {
+                        pointToLayer: (feature, latlng) => {
+                            return L.circleMarker(latlng, {
+                                radius: 5,
+                                fillColor: "#ff4444",
+                                color: "#ffffff",
+                                weight: 2,
+                                opacity: 1,
+                                fillOpacity: 0.8
+                            });
+                        },
+                        onEachFeature: (feature, layer) => {
+                            if (feature.properties && feature.properties.art) {
+                                layer.bindTooltip(feature.properties.art, {
+                                    permanent: true,
+                                    direction: 'top',
+                                    className: 'arten-label'
+                                });
+                                layer.bindPopup(`<b>Vogelart:</b> ${feature.properties.art}`);
+                            }
+                        }
+                    });
+                    overlays["Artennachweis"] = artenLayer;
+                    state.map.addLayer(artenLayer);
+                    layerControl.addOverlay(artenLayer, "Artennachweis");
+                }
+            } else {
+                console.warn("Artennachweis-Layer konnte nicht geladen werden.");
+            }
+
+            statusEl.innerText = "Layer geladen (ALKIS DB & Artennachweis integriert).";
         } catch (e) {
             if (!isLocalFile) console.error("Layer-Init fehlgeschlagen:", e);
         }
diff --git a/server.js b/server.js
index 8a1909b..b256976 100644
--- a/server.js
+++ b/server.js
@@ -248,6 +248,33 @@ app.get('/api/layers/alkis', async (req, res) => {
     }
 });
 
+// NEU: API zum Laden des Artennachweis-Layers als GeoJSON
+app.get('/api/layers/artennachweis', async (req, res) => {
+    log("Lade Artennachweis-Layer aus Datenbank...");
+    try {
+        const result = await pool.query(
+            `SELECT jsonb_build_object(
+                'type',     'FeatureCollection',
+                'features', COALESCE(jsonb_agg(features.feature), '[]'::jsonb)
+            )
+            FROM (
+              SELECT jsonb_build_object(
+                'type',       'Feature',
+                'geometry',   ST_AsGeoJSON(ST_Transform(geom, 4326))::jsonb,
+                'properties', jsonb_build_object(
+                    'art', art
+                )
+              ) AS feature
+              FROM geodaten.artennachweis
+            ) features`
+        );
+        res.json(result.rows[0].jsonb_build_object);
+    } catch (err) {
+        log(`FEHLER beim Laden des Artennachweis-Layers: ${err.message}`);
+        res.status(500).json({ error: err.message });
+    }
+});
+
 // API für Projekt-Statistiken (Fortschrittsanzeige)
 app.get('/api/stats/:projekt_id', async (req, res) => {
     const { projekt_id } = req.params;
diff --git a/style.css b/style.css
index ef63116..339e9fc 100644
--- a/style.css
+++ b/style.css
@@ -857,4 +857,23 @@ body {
         transform: scale(0.95);
         box-shadow: 0 0 0 0 rgba(52, 152, 219, 0);
     }
+}
+
+/* Artennachweis Labels */
+.arten-label {
+    background: rgba(255, 68, 68, 0.85) !important;
+    border: 1px solid rgba(255, 255, 255, 0.8) !important;
+    color: white !important;
+    font-weight: 700 !important;
+    font-size: 0.75rem !important;
+    border-radius: 4px !important;
+    padding: 2px 6px !important;
+    pointer-events: none !important;
+    box-shadow: 0 2px 4px rgba(0,0,0,0.4) !important;
+    text-shadow: 1px 1px 2px rgba(0,0,0,0.6);
+    white-space: nowrap;
+}
+
+.arten-label::before {
+    border-top-color: rgba(255, 68, 68, 0.85) !important;
 }
\ No newline at end of file