commit a67d3b66ff8aff887910b20b7c7222a19743ecbe
Author: RonMeier <48986706+RonMeier@users.noreply.github.com>
Date:   Wed Apr 12 17:53:43 2023 +0200

    Add files via upload

diff --git a/OTAWebUpdater.ino b/OTAWebUpdater.ino
new file mode 100644
index 0000000..fb2823f
--- /dev/null
+++ b/OTAWebUpdater.ino
@@ -0,0 +1,97 @@
+#include <WiFi.h>
+#include <WiFiClient.h>
+#include <WebServer.h>
+#include <Update.h>
+
+const char* ssid = "NetzName";
+const char* password = "pwd";
+
+WebServer server(80);
+
+const char* serverIndex =
+"<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>"
+"<form method='POST' action='#' enctype='multipart/form-data' id='upload_form'>"
+   "<input type='file' name='update'>"
+        "<input type='submit' value='Update'>"
+    "</form>"
+ "<div id='prg'>progress: 0%</div>"
+ "<script>"
+  "$('form').submit(function(e){"
+  "e.preventDefault();"
+  "var form = $('#upload_form')[0];"
+  "var data = new FormData(form);"
+  " $.ajax({"
+  "url: '/update',"
+  "type: 'POST',"
+  "data: data,"
+  "contentType: false,"
+  "processData:false,"
+  "xhr: function() {"
+  "var xhr = new window.XMLHttpRequest();"
+  "xhr.upload.addEventListener('progress', function(evt) {"
+  "if (evt.lengthComputable) {"
+  "var per = evt.loaded / evt.total;"
+  "$('#prg').html('progress: ' + Math.round(per*100) + '%');"
+  "}"
+  "}, false);"
+  "return xhr;"
+  "},"
+  "success:function(d, s) {"
+  "console.log('success!')"
+ "},"
+ "error: function (a, b, c) {"
+ "}"
+ "});"
+ "});"
+ "</script>";
+
+void setup(void) {
+  Serial.begin(115200);
+
+  WiFi.begin(ssid, password);
+  Serial.println("");
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.print("Connected to ");
+  Serial.println(ssid);
+  Serial.print("IP address: ");
+  Serial.println(WiFi.localIP());
+  
+  server.on("/", HTTP_GET, []() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/html", serverIndex);
+  });
+  server.on("/update", HTTP_POST, []() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
+    ESP.restart();
+  }, []() {
+    HTTPUpload& upload = server.upload();
+    if (upload.status == UPLOAD_FILE_START) {
+      Serial.printf("Update: %s\n", upload.filename.c_str());
+      if (!Update.begin(UPDATE_SIZE_UNKNOWN)) { //start with max available size
+        Update.printError(Serial);
+      }
+    } else if (upload.status == UPLOAD_FILE_WRITE) {
+      if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
+        Update.printError(Serial);
+      }
+    } else if (upload.status == UPLOAD_FILE_END) {
+      if (Update.end(true)) { //true to set the size to the current progress
+        Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
+      } else {
+        Update.printError(Serial);
+      }
+    }
+  });
+  server.begin();
+}
+
+void loop(void) {
+  server.handleClient();
+  delay(1);
+}