diff --git a/.luarc.json b/.luarc.json
index eebfd24..e5e2b0f 100644
--- a/.luarc.json
+++ b/.luarc.json
@@ -2,6 +2,5 @@
   "runtime.version": "Lua 5.1",
   "workspace.library": [
     "./scripts/_globals.lua"
-  ],
-  "diagnostics.globals": ["Params", "Result"]
+  ]
 }
\ No newline at end of file
diff --git a/Makefile b/Makefile
index dd66151..234eb65 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,7 @@ APP_NAME := node
 BIN_DIR := bin
 GOPATH := $(shell go env GOPATH)
 export CONFIG_PATH := ./config.yaml
+LDFLAGS := -X 'github.com/akyaiy/GoSally-mvp/core/config.NodeVersion=version0.0.1-dev'
 CGO_CFLAGS := -I/usr/local/include
 CGO_LDFLAGS := -L/usr/local/lib -llua5.1 -lm -ldl
 .PHONY: all build run runq test fmt vet lint check clean
@@ -24,9 +25,10 @@ setup: lint-setup goimports-setup golicenses-setup
 
 build:
 	@echo "Building..."
-	@echo "CGO_CFLAGS is: '$(CGO_CFLAGS)'"
-	@echo "CGO_LDFLAGS is: '$(CGO_LDFLAGS)'"
-	CGO_CFLAGS="$(CGO_CFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" go build -o $(BIN_DIR)/$(APP_NAME) ./cmd/$(APP_NAME)
+	@# @echo "CGO_CFLAGS is: '$(CGO_CFLAGS)'"
+	@# @echo "CGO_LDFLAGS is: '$(CGO_LDFLAGS)'"
+	@# CGO_CFLAGS="$(CGO_CFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" 
+	go build -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/$(APP_NAME) ./cmd/$(APP_NAME)
 
 run: build
 	@echo "Running!"
@@ -56,4 +58,7 @@ licenses:
 	@echo "Licenses have been exported to third_party/licenses"
 
 clean:
-	@rm -rf bin
\ No newline at end of file
+	@rm -rf bin
+
+help:
+	@echo "Available commands: $$(cat Makefile | grep -E '^[a-zA-Z_-]+:.*?' | grep -v -- '-setup:' | sed 's/:.*//g' | sort | uniq | tr '\n' ' ')"
diff --git a/cmd/node/node.go b/cmd/node/node.go
index 239ae1d..a2488e3 100644
--- a/cmd/node/node.go
+++ b/cmd/node/node.go
@@ -1,14 +1,19 @@
 package main
 
 import (
+	"fmt"
 	"log/slog"
+	"net"
 	"net/http"
 	"regexp"
 
+	"golang.org/x/net/netutil"
+
 	"github.com/akyaiy/GoSally-mvp/core/config"
 	gs "github.com/akyaiy/GoSally-mvp/core/general_server"
 	"github.com/akyaiy/GoSally-mvp/core/logs"
 	"github.com/akyaiy/GoSally-mvp/core/sv1"
+	"github.com/akyaiy/GoSally-mvp/core/update"
 
 	"github.com/go-chi/chi/v5"
 )
@@ -27,34 +32,63 @@ func init() {
 }
 
 func main() {
+	updater := update.NewUpdater(*log, cfg)
+	versuion, versionType, _ := updater.GetCurrentVersion()
+	fmt.Printf("Current version: %s (%s)\n", versuion, versionType)
+	ver, vert, _ := updater.GetLatestVersion(versionType)
+	fmt.Printf("Latest version: %s (%s)\n", ver, vert)
+
+	fmt.Println("Checking for updates...")
+	isNewUpdate, _ := updater.CkeckUpdates()
+	fmt.Println("Update check result:", isNewUpdate)
 	serverv1 := sv1.InitV1Server(&sv1.HandlerV1InitStruct{
-		Log:            *logs.SetupLogger(cfg.Mode),
+		Log:            *log,
 		Config:         cfg,
 		AllowedCmd:     regexp.MustCompile(`^[a-zA-Z0-9]+$`),
 		ListAllowedCmd: regexp.MustCompile(`^[a-zA-Z0-9_-]+$`),
 		Ver:            "v1",
 	})
 	s := gs.InitGeneral(&gs.GeneralServerInit{
-		Log:    *logs.SetupLogger(cfg.Mode),
+		Log:    *log,
 		Config: cfg,
 	}, serverv1)
 
 	r := chi.NewRouter()
-	r.Route("/api/{ver}/com", func(r chi.Router) {
+	r.Route(config.GetServerConsts().GetApiRoute()+config.GetServerConsts().GetComDirRoute(), func(r chi.Router) {
 		r.Get("/", s.HandleList)
 		r.Get("/{cmd}", s.Handle)
 	})
+	r.Route("/favicon.ico", func(r chi.Router) {
+		r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+			w.WriteHeader(http.StatusNoContent)
+		})
+	})
 	r.NotFound(serverv1.ErrNotFound)
-	if cfg.TlsEnabled == "true" {
-		log.Info("Server started with TLS", slog.String("address", cfg.Address))
-		err := http.ListenAndServeTLS(cfg.Address, cfg.CertFile, cfg.KeyFile, r)
+
+	address := cfg.Address
+	if cfg.TlsEnabled {
+		log.Info("HTTPS server started with TLS", slog.String("address", address))
+		listener, err := net.Listen("tcp", address)
+		if err != nil {
+			log.Error("Failed to start TLS listener", slog.String("error", err.Error()))
+			return
+		}
+		limitedListener := netutil.LimitListener(listener, 100)
+		err = http.ServeTLS(limitedListener, r, cfg.CertFile, cfg.KeyFile)
 		if err != nil {
 			log.Error("Failed to start HTTPS server", slog.String("error", err.Error()))
 		}
-	}
-	log.Info("Server started", slog.String("address", cfg.Address))
-	err := http.ListenAndServe(cfg.Address, r)
-	if err != nil {
-		log.Error("Failed to start HTTP server", slog.String("error", err.Error()))
+	} else {
+		log.Info("HTTP server started", slog.String("address", address))
+		listener, err := net.Listen("tcp", address)
+		if err != nil {
+			log.Error("Failed to start listener", slog.String("error", err.Error()))
+			return
+		}
+		limitedListener := netutil.LimitListener(listener, 100)
+		err = http.Serve(limitedListener, r)
+		if err != nil {
+			log.Error("Failed to start HTTP server", slog.String("error", err.Error()))
+		}
 	}
 }
diff --git a/com/_globals.lua b/com/_globals.lua
index 611f429..d7442e5 100644
--- a/com/_globals.lua
+++ b/com/_globals.lua
@@ -1,7 +1,11 @@
 ---@alias AnyTable table<string, any>
 
 ---@type AnyTable
-Params = {}
+In = {
+	Params = {},
+}
 
 ---@type AnyTable
-Result = {}
\ No newline at end of file
+Out = {
+	Result = {},
+}
\ No newline at end of file
diff --git a/com/_prepare.lua b/com/_prepare.lua
index f083f30..6952840 100644
--- a/com/_prepare.lua
+++ b/com/_prepare.lua
@@ -1,3 +1,4 @@
+---@diagnostic disable: duplicate-set-field
 package.path = package.path .. ";/usr/lib64/lua/5.1/?.lua;/usr/local/share/lua/5.1/?.lua" .. ";./com/?.lua;"
 package.cpath = package.cpath .. ";/usr/lib64/lua/5.1/?.so;/usr/local/lib/lua/5.1/?.so"
 
@@ -5,4 +6,11 @@ print = function() end
 io.write = function(...) end
 io.stdout = function() return nil end
 io.stderr = function() return nil end
-io.read = function(...) return nil end
\ No newline at end of file
+io.read = function(...) return nil end
+
+---@type table<string, any>
+Status = {
+	ok = "ok",
+	error = "error",
+	invalid = "invalid",
+}
diff --git a/com/echo.lua b/com/echo.lua
index 715beab..04603e6 100644
--- a/com/echo.lua
+++ b/com/echo.lua
@@ -2,12 +2,12 @@
 --- #args 
 ---  msg = the message
 
-if not Params.msg then
-    Result.status = "error"
-    Result.error = "Missing parameter: msg"
+if not In.Params.msg or In.Params.msg == "" then
+    Out.Result.status = Status.error
+    Out.Result.error = "Missing parameter: msg"
     return
 end
 
-Result.status = "ok"
-Result.answer = Params.msg
+Out.Result.status = Status.ok
+Out.Result.answer = In.Params.msg
 return
\ No newline at end of file
diff --git a/com/http.lua b/com/http.lua
deleted file mode 100644
index 9054695..0000000
--- a/com/http.lua
+++ /dev/null
@@ -1,15 +0,0 @@
-package.path = package.path .. ";/usr/lib64/lua/5.1/?.lua;/usr/local/share/lua/5.1/?.lua;" .. ";./com/?.lua;"
-package.cpath = package.cpath .. ";/usr/lib64/lua/5.1/?.so;/usr/local/lib/lua/5.1/?.so;"
-
-local https = require("ssl.https")
-local ltn12 = require("ltn12")
-
-local response = {}
-local res, code, headers = https.request{
-    url = "https://localhost:8080/api/v1/echo?msg=sigma",
-    sink = ltn12.sink.table(response)
-}
-
-
-Result.msg = table.concat(response)
-Result.status = "ok"
diff --git a/config.yaml b/config.yaml
index e40cdce..66e2a7e 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,7 +1,7 @@
 mode: "dev"
 
 http_server:
-  address: "localhost:8080"
+  address: "0.0.0.0:8080"
   timeout: 3s
   idle_timeout: 30s
   api:
@@ -11,8 +11,22 @@ http_server:
       - s2
 
 tls:
-  enabled: "true"
-  cert_file: "./cert/server.crt"
-  key_file: "./cert/server.key"
+  enabled: true
+  cert_file: "./cert/fullchain.pem"
+  key_file: "./cert/privkey.pem"
 
-com_dir: "com/"
\ No newline at end of file
+internal:
+  meta-dir: "./.meta/"
+
+com_dir: "com/"
+
+
+updates:
+  enabled: true
+  allow-auto-updates: true
+  allow-updates: true
+  allow-downgrades: false
+
+  check-interval: 1h
+  repository_url: "https://repo.serve.lv/raw/go-sally"
+  wanted-version: "latest-stable"
\ No newline at end of file
diff --git a/core/config/config.go b/core/config/config.go
index 020c888..b3d9e10 100644
--- a/core/config/config.go
+++ b/core/config/config.go
@@ -13,10 +13,26 @@ type ConfigConf struct {
 	ComDir     string `yaml:"com_dir" env-default:"./com/"`
 	HTTPServer `yaml:"http_server"`
 	TLS        `yaml:"tls"`
+	Internal   `yaml:"internal"`
+	Updates    `yaml:"updates"`
+}
+
+type Updates struct {
+	UpdatesEnabled   bool          `yaml:"enabled" env-default:"false"`
+	AllowAutoUpdates bool          `yaml:"allow_auto_updates" env-default:"false"`
+	AllowUpdates     bool          `yaml:"allow_updates" env-default:"false"`
+	AllowDowngrades  bool          `yaml:"allow_downgrades" env-default:"false"`
+	CheckInterval    time.Duration `yaml:"check_interval" env-default:"2h"`
+	RepositoryURL    string        `yaml:"repository_url" env-default:""`
+	WantedVersion    string        `yaml:"wanted_version" env-default:"latest-stable"`
+}
+
+type Internal struct {
+	MetaDir string `yaml:"meta_dir" env-default:"./.meta/"`
 }
 
 type TLS struct {
-	TlsEnabled string `yaml:"enabled" env-default:"false"`
+	TlsEnabled bool   `yaml:"enabled" env-default:"false"`
 	CertFile   string `yaml:"cert_file" env-default:"./cert/server.crt"`
 	KeyFile    string `yaml:"key_file" env-default:"./cert/server.key"`
 }
diff --git a/core/config/consts.go b/core/config/consts.go
new file mode 100644
index 0000000..b0f72a4
--- /dev/null
+++ b/core/config/consts.go
@@ -0,0 +1,29 @@
+package config
+
+var UUIDLength int = 4
+
+var ApiRoute string = "/api/{ver}"
+var ComDirRoute string = "/com"
+
+var NodeVersion string
+var ActualFileNanme string = "actual.txt"
+
+type _internalConsts struct{}
+type _serverConsts struct{}
+type _updateConsts struct{}
+
+func GetUpdateConsts() _updateConsts { return _updateConsts{} }
+func (_ _updateConsts) GetNodeVersion() string {
+	if NodeVersion == "" {
+		return "version0.0.0-none"
+	}
+	return NodeVersion
+}
+func (_ _updateConsts) GetActualFileName() string { return ActualFileNanme }
+
+func GetInternalConsts() _internalConsts     { return _internalConsts{} }
+func (_ _internalConsts) GetUUIDLength() int { return UUIDLength }
+
+func GetServerConsts() _serverConsts           { return _serverConsts{} }
+func (_ _serverConsts) GetApiRoute() string    { return ApiRoute }
+func (_ _serverConsts) GetComDirRoute() string { return ComDirRoute }
diff --git a/core/general_server/hanle_multi.go b/core/general_server/hanle_multi.go
index 288833c..aac1417 100644
--- a/core/general_server/hanle_multi.go
+++ b/core/general_server/hanle_multi.go
@@ -160,5 +160,10 @@ func (s *GeneralServer) writeJSONError(status int, msg string) {
 		"error":  msg,
 		"code":   status,
 	}
-	json.NewEncoder(s.w).Encode(resp)
+	if err := json.NewEncoder(s.w).Encode(resp); err != nil {
+		s.log.Error("Failed to write JSON error response",
+			slog.String("error", err.Error()),
+			slog.Int("status", status))
+		return
+	}
 }
diff --git a/core/logs/mock.go b/core/logs/mock.go
new file mode 100644
index 0000000..f0cd8a2
--- /dev/null
+++ b/core/logs/mock.go
@@ -0,0 +1,35 @@
+package logs
+
+import (
+	"context"
+	"log/slog"
+	"sync"
+)
+
+type MockHandler struct {
+	mu   sync.Mutex
+	Logs []slog.Record
+}
+
+func NewMockHandler() *MockHandler {
+	return &MockHandler{}
+}
+
+func (h *MockHandler) Enabled(_ context.Context, _ slog.Level) bool {
+	return true
+}
+
+func (h *MockHandler) Handle(_ context.Context, r slog.Record) error {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.Logs = append(h.Logs, r.Clone())
+	return nil
+}
+
+func (h *MockHandler) WithAttrs(_ []slog.Attr) slog.Handler {
+	return h
+}
+
+func (h *MockHandler) WithGroup(_ string) slog.Handler {
+	return h
+}
diff --git a/core/sv1/handle_com.go b/core/sv1/handle_com.go
index e8a9bd6..3b8a4dc 100644
--- a/core/sv1/handle_com.go
+++ b/core/sv1/handle_com.go
@@ -7,9 +7,8 @@ import (
 	"os"
 	"path/filepath"
 
-	lua "github.com/aarzilli/golua/lua"
-
 	"github.com/go-chi/chi/v5"
+	lua "github.com/yuin/gopher-lua"
 )
 
 func (h *HandlerV1) _handle() {
@@ -28,8 +27,7 @@ func (h *HandlerV1) _handle() {
 	log.Info("Received request")
 
 	cmd := chi.URLParam(h.r, "cmd")
-	var scriptPath string
-	if !h.allowedCmd.MatchString(string([]rune(cmd)[0])) {
+	if !h.allowedCmd.MatchString(string([]rune(cmd)[0])) || !h.listAllowedCmd.MatchString(cmd) {
 		log.Error("HTTP request error",
 			slog.String("error", "invalid command"),
 			slog.String("cmd", cmd),
@@ -37,15 +35,9 @@ func (h *HandlerV1) _handle() {
 		h.writeJSONError(http.StatusBadRequest, "invalid command")
 		return
 	}
-	if !h.listAllowedCmd.MatchString(cmd) {
-		log.Error("HTTP request error",
-			slog.String("error", "invalid command"),
-			slog.String("cmd", cmd),
-			slog.Int("status", http.StatusBadRequest))
-		h.writeJSONError(http.StatusBadRequest, "invalid command")
-		return
-	}
-	if scriptPath = h.comMatch(chi.URLParam(h.r, "ver"), cmd); scriptPath == "" {
+
+	scriptPath := h.comMatch(chi.URLParam(h.r, "ver"), cmd)
+	if scriptPath == "" {
 		log.Error("HTTP request error",
 			slog.String("error", "command not found"),
 			slog.String("cmd", cmd),
@@ -66,29 +58,27 @@ func (h *HandlerV1) _handle() {
 
 	L := lua.NewState()
 	defer L.Close()
-	L.OpenLibs()
 
 	// Создаем таблицу Params
-	L.NewTable()
-	paramsTableIndex := L.GetTop() // Индекс таблицы в стеке
-
-	// Заполняем таблицу из query параметров
+	// Создаем таблицу In с Params
+	paramsTable := L.NewTable()
 	qt := h.r.URL.Query()
 	for k, v := range qt {
 		if len(v) > 0 {
-			L.PushString(v[0])              // Значение
-			L.SetField(paramsTableIndex, k) // paramsTable[k] = v[0]
+			L.SetField(paramsTable, k, lua.LString(v[0]))
 		}
 	}
+	inTable := L.NewTable()
+	L.SetField(inTable, "Params", paramsTable)
+	L.SetGlobal("In", inTable)
 
-	// Помещаем Params в глобальные переменные
-	L.SetGlobal("Params")
+	// Создаем таблицу Out с Result
+	resultTable := L.NewTable()
+	outTable := L.NewTable()
+	L.SetField(outTable, "Result", resultTable)
+	L.SetGlobal("Out", outTable)
 
-	// Создаем пустую таблицу Result
-	L.NewTable()
-	L.SetGlobal("Result")
-
-	// Загружаем и выполняем скрипт подготовки окружения, если есть
+	// Скрипт подготовки окружения
 	prepareLuaEnv := filepath.Join(h.cfg.ComDir, "_prepare.lua")
 	if _, err := os.Stat(prepareLuaEnv); err == nil {
 		if err := L.DoFile(prepareLuaEnv); err != nil {
@@ -98,77 +88,85 @@ func (h *HandlerV1) _handle() {
 			return
 		}
 	} else {
-		log.Error("No environment preparation script found, skipping preparation",
-			slog.String("error", err.Error()))
+		log.Warn("No environment preparation script found, skipping preparation")
 	}
 
-	// Выполняем основной Lua скрипт
+	// Основной Lua скрипт
 	if err := L.DoFile(scriptPath); err != nil {
 		log.Error("Failed to execute lua script",
-			slog.Group("lua-status",
-				slog.String("error", err.Error()),
-				slog.String("lua-version", lua.LUA_VERSION)))
+			slog.String("error", err.Error()))
 		h.writeJSONError(http.StatusInternalServerError, "lua error: "+err.Error())
 		return
 	}
 
-	// Получаем глобальную переменную Result (таблица)
-	L.GetGlobal("Result")
-	if L.IsTable(-1) {
-		out := make(map[string]interface{})
+	// Получаем Out
+	lv := L.GetGlobal("Out")
+	tbl, ok := lv.(*lua.LTable)
+	if !ok {
+		log.Error("Lua global 'Out' is not a table")
+		h.writeJSONError(http.StatusInternalServerError, "'Out' is not a table")
+		return
+	}
 
-		L.PushNil() // Первый ключ
-		for {
-			if L.Next(-2) == 0 {
-				break
-			}
-			// На стеке: -1 = value, -2 = key
-			key := L.ToString(-2)
-			var val interface{}
-
-			switch L.Type(-1) {
-			case lua.LUA_TSTRING:
-				val = L.ToString(-1)
-			case lua.LUA_TNUMBER:
-				val = L.ToNumber(-1)
-			case lua.LUA_TBOOLEAN:
-				val = L.ToBoolean(-1)
-			default:
-				// fallback
-				val = L.ToString(-1)
-			}
-			out[key] = val
-			L.Pop(1) // Удаляем value, key остаётся для следующего L.Next
-		}
-		L.Pop(1) // Удаляем таблицу Result со стека
-
-		h.w.Header().Set("Content-Type", "application/json")
-		if err := json.NewEncoder(h.w).Encode(out); err != nil {
-			log.Error("Failed to encode JSON response",
-				slog.String("error", err.Error()))
-		}
-
-		switch out["status"] {
-		case "error":
-			log.Info("Command executed with error",
-				slog.String("cmd", cmd),
-				slog.Any("result", out))
-		case "ok":
-			log.Info("Command executed successfully",
-				slog.String("cmd", cmd), slog.Any("result", out))
-		default:
-			log.Info("Command executed and returned an unknown status",
-				slog.String("cmd", cmd),
-				slog.Any("result", out))
-		}
-	} else {
-		L.Pop(1) // убираем не таблицу из стека
+	// Получаем Result из Out
+	resultVal := tbl.RawGetString("Result")
+	resultTbl, ok := resultVal.(*lua.LTable)
+	if !ok {
 		log.Error("Lua global 'Result' is not a table")
 		h.writeJSONError(http.StatusInternalServerError, "'Result' is not a table")
 		return
 	}
 
-	log.Info("Session completed",
-		slog.Group("lua-status",
-			slog.String("lua-version", lua.LUA_VERSION)))
+	// Перебираем таблицу Result
+	out := make(map[string]interface{})
+	resultTbl.ForEach(func(key lua.LValue, value lua.LValue) {
+		out[key.String()] = convertTypes(value)
+	})
+
+	h.w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(h.w).Encode(out); err != nil {
+		log.Error("Failed to encode JSON response",
+			slog.String("error", err.Error()))
+	}
+
+	status, _ := out["status"].(string)
+	switch status {
+	case "error":
+		log.Info("Command executed with error",
+			slog.String("cmd", cmd),
+			slog.Any("result", out))
+	case "ok":
+		log.Info("Command executed successfully",
+			slog.String("cmd", cmd),
+			slog.Any("result", out))
+	default:
+		log.Info("Command executed and returned an unknown status",
+			slog.String("cmd", cmd),
+			slog.Any("result", out))
+	}
+
+	log.Info("Session completed")
+}
+
+func convertTypes(value lua.LValue) any {
+	switch value.Type() {
+	case lua.LTString:
+		return value.String()
+	case lua.LTNumber:
+		return float64(value.(lua.LNumber))
+	case lua.LTBool:
+		return bool(value.(lua.LBool))
+	case lua.LTTable:
+		result := make(map[string]interface{})
+		if tbl, ok := value.(*lua.LTable); ok {
+			tbl.ForEach(func(key lua.LValue, value lua.LValue) {
+				result[key.String()] = convertTypes(value)
+			})
+		}
+		return result
+	case lua.LTNil:
+		return nil
+	default:
+		return value.String()
+	}
 }
diff --git a/core/sv1/handle_list.go b/core/sv1/handle_list.go
index 67f3c2d..1008e35 100644
--- a/core/sv1/handle_list.go
+++ b/core/sv1/handle_list.go
@@ -104,5 +104,8 @@ func (h *HandlerV1) _handleList() {
 	log.Info("Session completed")
 
 	h.w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(h.w).Encode(commands)
+	if err := json.NewEncoder(h.w).Encode(commands); err != nil {
+		h.log.Error("Failed to write JSON error response",
+			slog.String("error", err.Error()))
+	}
 }
diff --git a/core/sv1/utils.go b/core/sv1/utils.go
index ba4d67a..043732c 100644
--- a/core/sv1/utils.go
+++ b/core/sv1/utils.go
@@ -8,6 +8,8 @@ import (
 	"net/http"
 	"os"
 	"regexp"
+
+	"github.com/akyaiy/GoSally-mvp/core/config"
 )
 
 func (h *HandlerV1) ErrNotFound(w http.ResponseWriter, r *http.Request) {
@@ -17,7 +19,7 @@ func (h *HandlerV1) ErrNotFound(w http.ResponseWriter, r *http.Request) {
 }
 
 func (h *HandlerV1) newUUID() string {
-	bytes := make([]byte, 16)
+	bytes := make([]byte, int(config.GetInternalConsts().GetUUIDLength()/2))
 	_, err := rand.Read(bytes)
 	if err != nil {
 		h.log.Error("Failed to generate UUID", slog.String("error", err.Error()))
@@ -43,7 +45,12 @@ func (h *HandlerV1) writeJSONError(status int, msg string) {
 		"error":  msg,
 		"code":   status,
 	}
-	json.NewEncoder(h.w).Encode(resp)
+	if err := json.NewEncoder(h.w).Encode(resp); err != nil {
+		h.log.Error("Failed to write JSON error response",
+			slog.String("error", err.Error()),
+			slog.Int("status", status))
+		return
+	}
 }
 
 func (h *HandlerV1) extractDescriptionStatic(path string) (string, error) {
diff --git a/core/update/update.go b/core/update/update.go
new file mode 100644
index 0000000..aa82d6b
--- /dev/null
+++ b/core/update/update.go
@@ -0,0 +1,216 @@
+package update
+
+import (
+	"errors"
+	"io"
+	"log/slog"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/akyaiy/GoSally-mvp/core/config"
+)
+
+const (
+	UpdateBranchStable  = "stable"
+	UpdateBranchDev     = "dev"
+	UpdateBranchTesting = "testing"
+)
+
+type Version string
+type Branch string
+type IsNewUpdate bool
+
+type UpdaterContract interface {
+	CkeckUpdates() (IsNewUpdate, error)
+	Update() error
+	GetCurrentVersion() (Version, Branch, error)
+	GetLatestVersion(updateBranch Branch) (Version, Branch, error)
+}
+
+type Updater struct {
+	Log    slog.Logger
+	Config *config.ConfigConf
+}
+
+func NewUpdater(log slog.Logger, cfg *config.ConfigConf) *Updater {
+	return &Updater{
+		Log:    log,
+		Config: cfg,
+	}
+}
+
+func splitVersionString(versionStr string) (Version, Branch, error) {
+	versionStr = strings.TrimSpace(versionStr)
+	if !strings.HasPrefix(versionStr, "version") {
+		return "", "unknown", errors.New("version string does not start with 'version'")
+	}
+	parts := strings.SplitN(versionStr[len("version"):], "-", 2)
+	parts[0] = strings.TrimPrefix(parts[0], "version")
+	if len(parts) != 2 {
+		return Version(parts[0]), Branch("unknown"), errors.New("version string format invalid")
+	}
+	return Version(parts[0]), Branch(parts[1]), nil
+}
+
+// isVersionNewer compares two version strings and returns true if the current version is newer than the latest version.
+func isVersionNewer(current, latest Version) bool {
+	if current == latest {
+		return false
+	}
+
+	currentParts := strings.Split(string(current), ".")
+	latestParts := strings.Split(string(latest), ".")
+
+	maxLen := len(currentParts)
+	if len(latestParts) > maxLen {
+		maxLen = len(latestParts)
+	}
+
+	for i := 0; i < maxLen; i++ {
+		var curPart, latPart int
+
+		if i < len(currentParts) {
+			cur, err := strconv.Atoi(currentParts[i])
+			if err != nil {
+				cur = 0 // или можно обработать ошибку иначе
+			}
+			curPart = cur
+		} else {
+			curPart = 0 // Если части в current меньше, считаем недостающие нулями
+		}
+
+		if i < len(latestParts) {
+			lat, err := strconv.Atoi(latestParts[i])
+			if err != nil {
+				lat = 0
+			}
+			latPart = lat
+		} else {
+			latPart = 0
+		}
+
+		if curPart < latPart {
+			return true
+		}
+		if curPart > latPart {
+			return false
+		}
+		// если равны — идём дальше
+	}
+	return false // все части равны, значит не новее
+}
+
+// if len(currentParts) >= 1 && len(latestParts) >= 1 {
+// 		if currentParts[0] < latestParts[0] {
+// 			if len(currentParts) < 2 || len(latestParts) < 2 {
+// 				if currentParts[1] < latestParts[1] {
+// 					return true
+// 				}
+// 				if currentParts[1] > latestParts[1] {
+// 					return false
+// 				}
+// 		}
+// 		if currentParts[0] > latestParts[0] {
+// 			return false
+// 		}
+// 	}
+
+// GetCurrentVersion reads the current version from the version file and returns it along with the branch.
+func (u *Updater) GetCurrentVersion() (Version, Branch, error) {
+	version, branch, err := splitVersionString(string(config.GetUpdateConsts().GetNodeVersion()))
+	if err != nil {
+		u.Log.Error("Failed to parse version string", slog.String("version", string(config.GetUpdateConsts().GetNodeVersion())), slog.String("error", err.Error()))
+		return "", "", err
+	}
+	switch branch {
+	case UpdateBranchDev, UpdateBranchStable, UpdateBranchTesting:
+		return Version(version), Branch(branch), nil
+	default:
+		return Version(version), Branch("unknown"), nil
+	}
+}
+
+func (u *Updater) GetLatestVersion(updateBranch Branch) (Version, Branch, error) {
+	repoURL := u.Config.Updates.RepositoryURL
+	if repoURL == "" {
+		u.Log.Error("RepositoryURL is empty in config")
+		return "", "", errors.New("repository URL is empty")
+	}
+	if !strings.HasPrefix(repoURL, "http://") && !strings.HasPrefix(repoURL, "https://") {
+		u.Log.Error("RepositoryURL does not start with http:// or https://", slog.String("RepositoryURL", repoURL))
+		return "", "", errors.New("repository URL must start with http:// or https://")
+	}
+	response, err := http.Get(repoURL + "/" + config.GetUpdateConsts().GetActualFileName())
+	if err != nil {
+		u.Log.Error("Failed to fetch latest version", slog.String("error", err.Error()))
+		return "", "", err
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		u.Log.Error("Failed to fetch latest version", slog.Int("status", response.StatusCode))
+		return "", "", errors.New("failed to fetch latest version, status code: " + http.StatusText(response.StatusCode))
+	}
+	data, err := io.ReadAll(response.Body)
+	if err != nil {
+		u.Log.Error("Failed to read latest version response", slog.String("error", err.Error()))
+		return "", "", err
+	}
+	lines := strings.Split(string(data), "\n")
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		version, branch, err := splitVersionString(string(line))
+		if err != nil {
+			u.Log.Error("Failed to parse version string", slog.String("version", string(line)), slog.String("error", err.Error()))
+			return "", "", err
+		}
+		if branch == updateBranch {
+			return Version(version), Branch(branch), nil
+		}
+	}
+	u.Log.Warn("No version found for branch", slog.String("branch", string(updateBranch)))
+	return "", "", errors.New("no version found for branch: " + string(updateBranch))
+}
+
+func (u *Updater) CkeckUpdates() (IsNewUpdate, error) {
+	currentVersion, currentBranch, err := u.GetCurrentVersion()
+	if err != nil {
+		return false, err
+	}
+	latestVersion, latestBranch, err := u.GetLatestVersion(currentBranch)
+	if err != nil {
+		return false, err
+	}
+	if currentVersion == latestVersion && currentBranch == latestBranch {
+		return false, nil
+	}
+	u.Log.Info("New update available",
+		slog.String("current_version", string(currentVersion)),
+		slog.String("current_branch", string(currentBranch)),
+		slog.String("latest_version", string(latestVersion)),
+		slog.String("latest_branch", string(latestBranch)),
+	)
+	return true, nil
+}
+
+// func (u *Updater) Update() error {
+// 	if !(u.Config.UpdatesEnabled && u.Config.Updates.AllowUpdates && u.Config.Updates.AllowDowngrades) {
+// 		u.Log.Info("Updates are disabled in config, skipping update")
+// 		return nil
+// 	}
+// 	wantedVersion := u.Config.Updates.WantedVersion
+// 	_, wantedBranch, _ := splitVersionString(wantedVersion)
+// 	newVersion, newBranch, err := u.GetLatestVersion(wantedBranch)
+// 	if err != nil {
+// 		return err
+// 	}
+// 	if wantedBranch != newBranch {
+// 		u.Log.Info("Wanted version branch does not match latest version branch: updating wanted branch",
+// 			slog.String("wanted_branch", string(wantedBranch)),
+// 			slog.String("latest_branch", string(newBranch)),
+// 		)
+// 	}
+// }
diff --git a/core/update/update_test.go b/core/update/update_test.go
new file mode 100644
index 0000000..195b03a
--- /dev/null
+++ b/core/update/update_test.go
@@ -0,0 +1,30 @@
+package update
+
+import (
+	"testing"
+)
+
+func TestFunc_isVersionNewer(t *testing.T) {
+	tests := []struct {
+		current string
+		latest  string
+		want    bool
+	}{
+		{"1.0.0", "1.0.0", false},
+		{"1.0.0", "1.0.1", true},
+		{"1.0.1", "1.0.0", false},
+		{"2.0.0", "1.9.9", false},
+		{"2.2.3", "1.9.9", false},
+		{"22.2.3", "1.9.9", false},
+		{"1.2.3", "1.99.9", true},
+		{"1.10", "1.5.99999", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.current+" vs "+tt.latest, func(t *testing.T) {
+			if got := isVersionNewer(Version(tt.current), Version(tt.latest)); got != tt.want {
+				t.Errorf("isVersionNewer(%q, %q) = %v; want %v", tt.current, tt.latest, got, tt.want)
+			}
+		})
+	}
+}
diff --git a/go.mod b/go.mod
index 8cfedc4..8141e05 100644
--- a/go.mod
+++ b/go.mod
@@ -6,11 +6,11 @@ require (
 	github.com/go-chi/chi/v5 v5.2.2
 	github.com/ilyakaznacheev/cleanenv v1.5.0
 	github.com/yuin/gopher-lua v1.1.1
+	golang.org/x/net v0.41.0
 )
 
 require (
 	github.com/BurntSushi/toml v1.5.0 // indirect
-	github.com/aarzilli/golua v0.0.0-20250217091409-248753f411c4 // indirect
 	github.com/joho/godotenv v1.5.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	olympos.io/encoding/edn v0.0.0-20201019073823-d3554ca0b0a3 // indirect
diff --git a/go.sum b/go.sum
index 84c7419..1e409b1 100644
--- a/go.sum
+++ b/go.sum
@@ -1,12 +1,6 @@
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
 github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
-github.com/aarzilli/golua v0.0.0-20250217091409-248753f411c4 h1:gW5i3FQAMcbkNgo/A87gCKAbBMalAO8BlPIMo9Gk2Ow=
-github.com/aarzilli/golua v0.0.0-20250217091409-248753f411c4/go.mod h1:hMjfaJVSqVnxenMlsxrq3Ni+vrm9Hs64tU4M7dhUoO4=
-github.com/akyaiy/GoSally-mvp/config v0.0.0-20250622141207-5326dd45b694 h1:SJfxaud4HMVg9roTMMJaTQ+Odoz1LIw60TiS97EtWCE=
-github.com/akyaiy/GoSally-mvp/config v0.0.0-20250622141207-5326dd45b694/go.mod h1:2eaoBiPQmvZoC9DAzn11zHzWmscBI4dMTi4HeGO96XQ=
-github.com/akyaiy/GoSally-mvp/logs v0.0.0-20250622141207-5326dd45b694 h1:qYZIzX3NczqozwCnlLQ5M1vTLoCqIIF1qxxweub4zQo=
-github.com/akyaiy/GoSally-mvp/logs v0.0.0-20250622141207-5326dd45b694/go.mod h1:o5ysbqTH4qQTlpx8cu2XaXbTI2blpDgaUI4CEvi0VGo=
 github.com/go-chi/chi/v5 v5.2.2 h1:CMwsvRVTbXVytCk1Wd72Zy1LAsAh9GxMmSNWLHCG618=
 github.com/go-chi/chi/v5 v5.2.2/go.mod h1:L2yAIGWB3H+phAw1NxKwWM+7eUH/lU8pOMm5hHcoops=
 github.com/ilyakaznacheev/cleanenv v1.5.0 h1:0VNZXggJE2OYdXE87bfSSwGxeiGt9moSR2lOrsHHvr4=
@@ -15,6 +9,8 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/yuin/gopher-lua v1.1.1 h1:kYKnWBjvbNP4XLT3+bPEwAXJx262OhaHDWDVOPjL46M=
 github.com/yuin/gopher-lua v1.1.1/go.mod h1:GBR0iDaNXjAgGg9zfCvksxSRnQx76gclCIb7kdAd1Pw=
+golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
+golang.org/x/net v0.41.0/go.mod h1:B/K4NNqkfmg07DQYrbwvSluqCJOOXwUjeb/5lOisjbA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=