Added basic WebSocket Functionality

vesper/ota.hpp

@@ -0,0 +1,65 @@
+void checkForUpdates();
+void performOTA();
+
+void checkForUpdates() {
+  Serial.println("Checking for firmware updates...");
+
+  // Step 1: Check the current version on the server
+  HTTPClient http;
+  http.begin(versionUrl);
+  int httpCode = http.GET();
+
+  if (httpCode == HTTP_CODE_OK) {
+    String newVersionStr = http.getString();
+    float newVersion = newVersionStr.toFloat();
+
+    Serial.printf("Current version: %.1f, Available version: %.1f\n", currentVersion, newVersion);
+
+    // Step 2: Compare the version
+    if (newVersion > currentVersion) {
+      Serial.println("New version available. Starting update...");
+      performOTA();  // Perform the OTA update if a new version is found
+    } else {
+      Serial.println("No new version available.");
+    }
+  } else {
+    Serial.printf("Failed to retrieve version. HTTP error code: %d\n", httpCode);
+  }
+  http.end();
+}
+
+void performOTA() {
+  HTTPClient http;
+  http.begin(firmwareUrl);
+  int httpCode = http.GET();
+
+  if (httpCode == HTTP_CODE_OK) {
+    int contentLength = http.getSize();
+    if (contentLength > 0) {
+      bool canBegin = Update.begin(contentLength);
+      if (canBegin) {
+        Serial.println("Starting OTA update...");
+        WiFiClient *client = http.getStreamPtr();
+        size_t written = Update.writeStream(*client);
+        if (written == contentLength) {
+          Serial.println("Update complete");
+          if (Update.end()) {
+            Serial.println("Update successfully finished. Rebooting...");
+            ESP.restart();  // Reboot to apply the update
+          } else {
+            Serial.printf("Update failed: %s\n", Update.errorString());
+          }
+        } else {
+          Serial.println("Update failed: Written size mismatch.");
+        }
+      } else {
+        Serial.println("Not enough space for update.");
+      }
+    } else {
+      Serial.println("Firmware file is empty.");
+    }
+  } else {
+    Serial.printf("Firmware HTTP error code: %d\n", httpCode);
+  }
+  http.end();
+}