diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 4e5b2b6f..00000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "C_Cpp.clang_format_fallbackStyle": "{BasedOnStyle: Google, IndentWidth: 4, ColumnLimit: 0}",
-    "C_Cpp.formatting": "clangFormat",
-    "C_Cpp.default.forcedInclude": []
-}
\ No newline at end of file
diff --git a/include/EspFileSystem.h b/include/EspFileSystem.h
new file mode 100644
index 00000000..1758bfcf
--- /dev/null
+++ b/include/EspFileSystem.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "Global.h"
+#include "LittleFS.h"
+
+extern FS LittleFS;
+using littlefs_impl::LittleFSConfig;
+extern FS* filesystem;
+#define FileFS LittleFS
+#define FS_NAME "LittleFS"
+
+extern bool fileSystemInit();
+
+extern File seekFile(const String& filename, size_t position = 0);
+extern const String writeFile(const String& filename, const String& str);
+extern const String readFile(const String& filename, size_t max_size);
+extern const String filepath(const String& filename);
+extern bool cutFile(const String& src, const String& dst);
\ No newline at end of file
diff --git a/include/Global.h b/include/Global.h
new file mode 100644
index 00000000..bcab371a
--- /dev/null
+++ b/include/Global.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include <Arduino.h>
+#include <ArduinoJson.h>
+#include <FS.h>
+#include <StreamUtils.h>
\ No newline at end of file
diff --git a/include/main.h b/include/main.h
index d1f7fc89..f2d7c386 100644
--- a/include/main.h
+++ b/include/main.h
@@ -1,14 +1,6 @@
-#include <Arduino.h>
-#include <ArduinoJson.h>
-#include <FS.h>
-#include <StreamUtils.h>
-
-#include "LittleFS.h"
-
-extern FS LittleFS;
-using littlefs_impl::LittleFSConfig;
-extern FS* filesystem;
-#define FileFS LittleFS
-#define FS_NAME "LittleFS"
+#pragma once
+#include "EspFileSystem.h"
+#include "Global.h"
+#include "rest.h"
 
 void setupESP();
diff --git a/include/rest.h b/include/rest.h
index 09e6942a..b5235955 100644
--- a/include/rest.h
+++ b/include/rest.h
@@ -1,9 +1,4 @@
-#include "main.h"
+#pragma once
+#include "Global.h"
 
-File seekFile(const String& filename, size_t position = 0);
-const String writeFile(const String& filename, const String& str);
-const String readFile(const String& filename, size_t max_size);
-const String filepath(const String& filename);
-bool fileSystemInit();
-String prettyBytes(size_t size);
-bool cutFile(const String& src, const String& dst);
\ No newline at end of file
+String prettyBytes(size_t size);
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index a401a611..6f23b121 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,7 +15,7 @@ data_dir = data_svelte
 
 [common_env_data]
 lib_deps_external = 
-	bblanchon/ArduinoJson 
+	bblanchon/ArduinoJson @6.18.0
 
 [env:esp8266_4mb]
 build_flags = -Desp8266_4mb="esp8266_4mb"
@@ -23,6 +23,8 @@ framework = arduino
 board = nodemcuv2
 board_build.ldscript = eagle.flash.4m1m.ld
 platform = espressif8266 @2.6.3
+lib_deps = 
+	${common_env_data.lib_deps_external}
 monitor_filters = esp8266_exception_decoder
 upload_speed = 921600
 monitor_speed = 115200
diff --git a/src/EspFileSystem.cpp b/src/EspFileSystem.cpp
new file mode 100644
index 00000000..c464a1dc
--- /dev/null
+++ b/src/EspFileSystem.cpp
@@ -0,0 +1,76 @@
+#include "EspFileSystem.h"
+
+bool fileSystemInit() {
+    if (!FileFS.begin()) {
+        Serial.println("FS Init ERROR, may be FS was not flashed");
+        return false;
+    }
+    Serial.println("FS Init completed");
+    return true;
+}
+
+File seekFile(const String& filename, size_t position) {
+    String path = filepath(filename);
+    auto file = FileFS.open(path, "r");
+    if (!file) {
+        Serial.println("[E] file error");
+    }
+    file.seek(position, SeekSet);
+    return file;
+}
+
+const String writeFile(const String& filename, const String& str) {
+    String path = filepath(filename);
+    auto file = FileFS.open(path, "w");
+    if (!file) {
+        return "failed";
+    }
+    file.print(str);
+    file.close();
+    return "sucсess";
+}
+
+const String readFile(const String& filename, size_t max_size) {
+    String path = filepath(filename);
+    auto file = FileFS.open(path, "r");
+    if (!file) {
+        return "failed";
+    }
+    size_t size = file.size();
+    if (size > max_size) {
+        file.close();
+        return "large";
+    }
+    String temp = file.readString();
+    file.close();
+    return temp;
+}
+
+const String filepath(const String& filename) {
+    return filename.startsWith("/") ? filename : "/" + filename;
+}
+
+bool cutFile(const String& src, const String& dst) {
+    String srcPath = filepath(src);
+    String dstPath = filepath(dst);
+    Serial.println("cut " + srcPath + " to " + dstPath);
+    if (!FileFS.exists(srcPath)) {
+        Serial.println("not exist: " + srcPath);
+        return false;
+    }
+    if (FileFS.exists(dstPath)) {
+        FileFS.remove(dstPath);
+    }
+    auto srcFile = FileFS.open(srcPath, "r");
+    auto dstFile = FileFS.open(dstPath, "w");
+
+    uint8_t buf[512];
+    while (srcFile.available()) {
+        size_t len = srcFile.read(buf, 512);
+        dstFile.write(buf, len);
+    }
+    srcFile.close();
+    dstFile.close();
+    FileFS.remove(srcPath);
+    return true;
+}
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 98cfb3c7..1f180baf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,4 @@
-#include "main.h"
-
-#include "rest.h"
+#include "Main.h"
 
 void setup() {
     Serial.begin(115200);
diff --git a/src/rest.cpp b/src/rest.cpp
index 786d1eb9..020b050c 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -1,55 +1,5 @@
 #include "rest.h"
 
-File seekFile(const String& filename, size_t position) {
-    String path = filepath(filename);
-    auto file = FileFS.open(path, "r");
-    if (!file) {
-        Serial.println("[E] file error");
-    }
-    file.seek(position, SeekSet);
-    return file;
-}
-
-const String writeFile(const String& filename, const String& str) {
-    String path = filepath(filename);
-    auto file = FileFS.open(path, "w");
-    if (!file) {
-        return "failed";
-    }
-    file.print(str);
-    file.close();
-    return "sucсess";
-}
-
-const String readFile(const String& filename, size_t max_size) {
-    String path = filepath(filename);
-    auto file = FileFS.open(path, "r");
-    if (!file) {
-        return "failed";
-    }
-    size_t size = file.size();
-    if (size > max_size) {
-        file.close();
-        return "large";
-    }
-    String temp = file.readString();
-    file.close();
-    return temp;
-}
-
-const String filepath(const String& filename) {
-    return filename.startsWith("/") ? filename : "/" + filename;
-}
-
-bool fileSystemInit() {
-    if (!FileFS.begin()) {
-        Serial.println("FS Init ERROR, may be FS was not flashed");
-        return false;
-    }
-    Serial.println("FS Init completed");
-    return true;
-}
-
 String prettyBytes(size_t size) {
     if (size < 1024)
         return String(size) + "b";
@@ -60,28 +10,3 @@ String prettyBytes(size_t size) {
     else
         return String(size / 1024.0 / 1024.0 / 1024.0) + "GB";
 }
-
-bool cutFile(const String& src, const String& dst) {
-    String srcPath = filepath(src);
-    String dstPath = filepath(dst);
-    Serial.println("cut " + srcPath + " to " + dstPath);
-    if (!FileFS.exists(srcPath)) {
-        Serial.println("not exist: " + srcPath);
-        return false;
-    }
-    if (FileFS.exists(dstPath)) {
-        FileFS.remove(dstPath);
-    }
-    auto srcFile = FileFS.open(srcPath, "r");
-    auto dstFile = FileFS.open(dstPath, "w");
-
-    uint8_t buf[512];
-    while (srcFile.available()) {
-        size_t len = srcFile.read(buf, 512);
-        dstFile.write(buf, len);
-    }
-    srcFile.close();
-    dstFile.close();
-    FileFS.remove(srcPath);
-    return true;
-}
\ No newline at end of file