Implement DatabaseBackend, Verschiedenes

src/databasebackend.h

@@ -0,0 +1,67 @@
+#include <Arduino.h>
+#include <HTTPClient.h>
+#include "master.h"
+
+
+const char* BACKEND_SERVER = "http://db.reptilfpv.de:3000";
+const char* BACKEND_TOKEN = "a4514dc0-15f5-4299-8826-fffb3139d39c";
+
+bool backendOnline() {
+    if (WiFi.status() != WL_CONNECTED) {
+        Serial.println("No WiFi connection.");
+        return false;
+    }
+
+    HTTPClient http;
+    http.begin(String(BACKEND_SERVER) + "/api/health");
+    http.addHeader("Authorization", String("Bearer ") + BACKEND_TOKEN);
+    
+    int httpCode = http.GET();
+    
+    if (httpCode == HTTP_CODE_OK) {
+        return true;
+        Serial.println("Database server connection successful");
+    } else {
+        return false;
+        Serial.printf("Database server connection failed, error: %d\n", httpCode);
+    }
+    
+    http.end();
+}
+
+bool userExists(const String& userId) {
+    if (!backendOnline()) {
+        Serial.println("No internet connection, cannot check user existence.");
+        return false;
+    }
+
+    HTTPClient http;
+    http.begin(String(BACKEND_SERVER) + "/api/users/" + userId);
+    http.addHeader("Authorization", String("Bearer ") + BACKEND_TOKEN);
+    
+    //Post request to check if user exists
+    int httpCode = http.POST("");
+
+}
+
+void setupBackendRoutes(AsyncWebServer& server) {
+    server.on("/api/health", HTTP_GET, [](AsyncWebServerRequest *request) {
+        
+        DynamicJsonDocument doc(64);
+        doc["status"] = backendOnline() ? "connected" : "disconnected";
+        String response;
+        serializeJson(doc, response);
+        request->send(200, "application/json", response);
+    });
+
+    server.on("/api/users", HTTP_GET, [](AsyncWebServerRequest *request) {
+        if (!backendOnline()) {
+            request->send(503, "application/json", "{\"error\":\"Database not connected\"}");
+            return;
+        }
+        
+        // Handle user retrieval logic here
+    });
+
+    // Add more routes as needed
+}