serve the webapp from esp8266

Firmware/EggbotWireless/include/WebAPI.h

@@ -4,6 +4,7 @@
 #include <Arduino.h>
 #include <ESP8266WebServer.h>
 #include <ArduinoJson.h>
+#include <FS.h>
 
 class WebAPI {
    private:
@@ -11,6 +12,8 @@ class WebAPI {
     void handlePutCommand();
     void handleGetStatus();
     void sendCORS();
+    bool getFile(String filename);
+    String getContentType(String filename);
 
     String getStatusJson();
    public:

Firmware/EggbotWireless/src/WebAPI.cpp

@@ -24,6 +24,49 @@ String WebAPI::getStatusJson() {
     return out;
 }
 
+String WebAPI::getContentType(String filename) {
+    if (server.hasArg("download")) {
+        return "application/octet-stream";
+    } else if (filename.endsWith(".html")) {
+        return "text/html";
+    } else if (filename.endsWith(".css")) {
+        return "text/css";
+    } else if (filename.endsWith(".js")) {
+        return "application/javascript";
+    } else if (filename.endsWith(".png")) {
+        return "image/png";
+    } else if (filename.endsWith(".gif")) {
+        return "image/gif";
+    } else if (filename.endsWith(".jpg")) {
+        return "image/jpeg";
+    } else if (filename.endsWith(".ico")) {
+        return "image/x-icon";
+    } else if (filename.endsWith(".xml")) {
+        return "text/xml";
+    } else if (filename.endsWith(".gz")) {
+        return "application/x-gzip";
+    }
+    return "text/plain";
+}
+
+bool WebAPI::getFile(String filename) {
+    if (filename.endsWith("/")) {
+        filename += "index.html";
+    }
+    String contentType = getContentType(filename);
+    String pathWithGz = filename + ".gz";
+    if (SPIFFS.exists(pathWithGz) || SPIFFS.exists(filename)) {
+        if (SPIFFS.exists(pathWithGz)) {
+            filename += ".gz";
+        }
+        File file = SPIFFS.open(filename, "r");
+        server.streamFile(file, contentType);
+        file.close();
+        return true;
+    }
+    return false;
+}
+
 void WebAPI::sendCORS() {
     server.sendHeader("Access-Control-Allow-Origin", "*");
     server.sendHeader("Access-Control-Max-Age", "10000");
@@ -38,9 +81,11 @@ void WebAPI::handleNotFound() {
         sendCORS();
         server.send(204);
     } else {
+        if (!getFile(server.uri())) {
             server.send(404, "text/plain", "");
         }
     }
+}
 
 void WebAPI::handlePutCommand() {
     sendCORS();
@@ -61,6 +106,8 @@ void WebAPI::init() {
               std::bind(&WebAPI::handleGetStatus, this));
 
     server.onNotFound(std::bind(&WebAPI::handleNotFound, this));
+
+    SPIFFS.begin();
     server.begin();
 }