From ceee02fc48b1f6777792d0b2393f491eee61392f Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Sun, 10 May 2026 02:07:40 +0000
Subject: [PATCH] Add data_visualization/js/api.js

---
 data_visualization/js/api.js | 52 ++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 data_visualization/js/api.js

diff --git a/data_visualization/js/api.js b/data_visualization/js/api.js
new file mode 100644
index 0000000..c6b8452
--- /dev/null
+++ b/data_visualization/js/api.js
@@ -0,0 +1,52 @@
+/**
+ * Kommunikationsmodul zur API für Telemetriedatenabruf
+ * Fetch von Telemetriedaten über /data
+ * @module api
+ */
+
+/**
+ * Führt GET-Request auf /data aus und gibt JSON mit Telemetrie zurück.
+ *
+ * @async
+ * @function fetchTelemetryData
+ * @param {Object} params - Filterparameter für den Datenabruf
+ * @param {string} [params.time_range] - Zeitfenster (z. B. '2026-03-10T00:00:00Z,2026-03-10T06:00:00Z')
+ * @param {string|number} [params.ir_gain] - IR-Gain Einstellung
+ * @param {string} [params.material_type] - Materialtyp
+ * @returns {Promise<Array<{timestamp:string,vbat:number,ir_gain:number,drift:number,event_flag:boolean}>>>} JSON-Array mit Telemetriedaten
+ * @throws {Error} Bei Netzwerk- oder Parsing-Fehlern
+ */
+export async function fetchTelemetryData(params = {}) {
+  const query = new URLSearchParams();
+
+  if (params.time_range) query.append('time_range', params.time_range);
+  if (params.ir_gain) query.append('ir_gain', params.ir_gain);
+  if (params.material_type) query.append('material_type', params.material_type);
+
+  const queryString = query.toString();
+  const url = queryString ? `/data?${queryString}` : '/data';
+
+  try {
+    const response = await fetch(url, {
+      method: 'GET',
+      headers: {
+        'Accept': 'application/json'
+      }
+    });
+
+    if (!response.ok) {
+      throw new Error(`Server returned ${response.status} (${response.statusText})`);
+    }
+
+    const data = await response.json();
+
+    if (!Array.isArray(data)) {
+      throw new Error('Invalid response format: Expected an array');
+    }
+
+    return data;
+  } catch (error) {
+    console.error('Fehler beim Abrufen der Telemetriedaten:', error);
+    throw error;
+  }
+}