rename golang to go

extensions/go/DataToolsGO/.gitignore

@@ -0,0 +1,2 @@
+config.json
+imageTools-*

extensions/go/DataToolsGO/build.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Define binary names
+LINUX_BIN="imageTools-linux"
+LINUX_ARM_BIN="imageTools-linuxARMv7"
+WINDOWS_BIN="imageTools-windows.exe"
+
+echo "Starting build process..."
+
+# Build for Linux (64-bit)
+echo "Building for Linux..."
+GOOS=linux GOARCH=amd64 go build -o "$LINUX_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_BIN"
+else
+    echo "Failed to build Linux binary"
+    exit 1
+fi
+
+# Build for Windows (64-bit)
+echo "Building for Windows..."
+GOOS=windows GOARCH=amd64 go build -o "$WINDOWS_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $WINDOWS_BIN"
+else
+    echo "Failed to build Windows binary"
+    exit 1
+fi
+
+# Build for Linux ARM (ARMv7)
+echo "Building for Linux ARMv7..."
+GOOS=linux GOARCH=arm GOARM=7 go build -o "$LINUX_ARM_BIN" main.go
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_ARM_BIN"
+else
+    echo "Failed to build Linux ARMv7 binary"
+    exit 1
+fi
+
+echo "Build complete."

extensions/go/DataToolsGO/go.mod

@@ -0,0 +1,5 @@
+module dataTools
+
+go 1.25.7
+
+require github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646

extensions/go/DataToolsGO/go.sum

@@ -0,0 +1,2 @@
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=

extensions/go/DataToolsGO/main.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"image"
+	"image/jpeg"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/nfnt/resize"
+)
+
+func main() {
+	// Command line arguments
+	dirPath := flag.String("dir", "./", "Directory containing images")
+	maxWidth := flag.Uint("width", 1000, "Maximum width for resizing")
+	quality := flag.Int("quality", 75, "JPEG quality (1-100)")
+	flag.Parse()
+
+	files, err := os.ReadDir(*dirPath)
+	if err != nil {
+		fmt.Printf("Error reading directory: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Processing images in %s (Max Width: %d, Quality: %d)\n", *dirPath, *maxWidth, *quality)
+
+	for _, file := range files {
+		if file.IsDir() {
+			continue
+		}
+
+		ext := strings.ToLower(filepath.Ext(file.Name()))
+		if ext != ".jpg" && ext != ".jpeg" && ext != ".png" {
+			continue
+		}
+
+		filePath := filepath.Join(*dirPath, file.Name())
+		processImage(filePath, *maxWidth, *quality)
+	}
+
+	fmt.Println("Done. Your storage can finally breathe again.")
+}
+
+func processImage(path string, maxWidth uint, quality int) {
+	file, err := os.Open(path)
+	if err != nil {
+		fmt.Printf("Failed to open %s: %v\n", path, err)
+		return
+	}
+
+	img, _, err := image.Decode(file)
+	file.Close()
+	if err != nil {
+		fmt.Printf("Failed to decode %s: %v\n", path, err)
+		return
+	}
+
+	// Only resize if original is wider than maxWidth
+	bounds := img.Bounds()
+	var finalImg image.Image
+	if uint(bounds.Dx()) > maxWidth {
+		finalImg = resize.Resize(maxWidth, 0, img, resize.Lanczos3)
+		fmt.Printf("Resized and compressed: %s\n", filepath.Base(path))
+	} else {
+		finalImg = img
+		fmt.Printf("Compressed (no resize needed): %s\n", filepath.Base(path))
+	}
+
+	// Overwrite the original file
+	out, err := os.Create(path)
+	if err != nil {
+		fmt.Printf("Failed to create output file %s: %v\n", path, err)
+		return
+	}
+	defer out.Close()
+
+	err = jpeg.Encode(out, finalImg, &jpeg.Options{Quality: quality})
+	if err != nil {
+		fmt.Printf("Failed to encode %s: %v\n", path, err)
+	}
+}

extensions/go/MPStudyGO/go.mod

@@ -0,0 +1,8 @@
+module MPPOS
+
+go 1.25.7
+
+require (
+	github.com/google/uuid v1.6.0
+	github.com/joho/godotenv v1.5.1
+)

extensions/go/MPStudyGO/go.sum

@@ -0,0 +1,4 @@
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=

extensions/go/MPStudyGO/main.go

@@ -0,0 +1,143 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/joho/godotenv"
+)
+
+// Request structures based on MP documentation
+type PrintRequest struct {
+	Type              string      `json:"type"`
+	ExternalReference string      `json:"external_reference"`
+	Config            PrintConfig `json:"config"`
+	Content           string      `json:"content"`
+}
+
+type PrintConfig struct {
+	Point PointSettings `json:"point"`
+}
+
+type PointSettings struct {
+	TerminalID string `json:"terminal_id"`
+	Subtype    string `json:"subtype"`
+}
+
+func main() {
+	err := godotenv.Load("../.env")
+	if err != nil {
+		fmt.Println("Error loading .env file")
+	}
+
+	// Example receipt using supported tags: {b}, {center}, {br}, {s}
+	receiptContent := "{center}{b}SEKIPOS VENTA{/b}{br}" +
+		"--------------------------------{br}" +
+		"{left}Producto: Choripan Premium{br}" +
+		"{left}Total: $5.500{br}" +
+		"--------------------------------{br}" +
+		"{center}{s}Gracias por su compra{/s}{br}"
+
+	resp, err := SendPrintAction(receiptContent)
+	if err != nil {
+		fmt.Printf("Error: %v\n", err)
+		return
+	}
+	fmt.Printf("Response: %s\n", resp)
+}
+
+func SendPrintAction(content string) (string, error) {
+	apiURL := "https://api.mercadopago.com/terminals/v1/actions"
+	accessToken := os.Getenv("MP_ACCESS_TOKEN")
+	terminalID := os.Getenv("MP_TERMINAL_ID")
+
+	payload := PrintRequest{
+		Type:              "print", // Required
+		ExternalReference: fmt.Sprintf("ref_%d", time.Now().Unix()),
+		Config: PrintConfig{
+			Point: PointSettings{
+				TerminalID: terminalID,
+				Subtype:    "custom", // For text with tags
+			},
+		},
+		Content: content, // Must be 100-4096 chars
+	}
+
+	jsonData, _ := json.Marshal(payload)
+
+	req, _ := http.NewRequest("POST", apiURL, bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+accessToken)
+	// Mandatory Unique UUID V4
+	req.Header.Set("X-Idempotency-Key", uuid.New().String())
+
+	client := &http.Client{Timeout: 10 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	body, _ := io.ReadAll(resp.Body)
+
+	if resp.StatusCode != http.StatusCreated && resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("MP Error %d: %s", resp.StatusCode, string(body))
+	}
+
+	return string(body), nil
+}
+
+func PartialRefund(orderID string, paymentID string, amount string) (string, error) {
+	// Endpoint para reembolsos según la referencia de API
+	apiURL := fmt.Sprintf("https://api.mercadopago.com/v1/orders/%s/refund", orderID)
+	token := os.Getenv("MP_ACCESS_TOKEN")
+
+	payload := map[string]interface{}{
+		"transactions": []map[string]string{
+			{
+				"id":     paymentID,
+				"amount": amount, // Debe ser un string sin decimales
+			},
+		},
+	}
+
+	body, _ := json.Marshal(payload)
+	req, _ := http.NewRequest("POST", apiURL, bytes.NewBuffer(body))
+	req.Header.Set("Authorization", "Bearer "+token)
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-Idempotency-Key", uuid.New().String())
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	resBody, _ := io.ReadAll(resp.Body)
+	return string(resBody), nil
+}
+
+func GetOrderStatus(orderID string) (string, error) {
+	apiURL := fmt.Sprintf("https://api.mercadopago.com/v1/orders/%s", orderID)
+	token := os.Getenv("MP_ACCESS_TOKEN")
+
+	req, _ := http.NewRequest("GET", apiURL, nil)
+	req.Header.Set("Authorization", "Bearer "+token)
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	resBody, _ := io.ReadAll(resp.Body)
+	return string(resBody), nil
+}

extensions/go/ScannerCOM/.gitignore

@@ -0,0 +1,2 @@
+config.json
+COMScannerGO-*

extensions/go/ScannerCOM/build.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Define binary names
+LINUX_BIN="COMScannerGO-linux"
+LINUX_ARM_BIN="COMScannerGO-linuxARMv7"
+WINDOWS_BIN="COMScannerGO-windows.exe"
+
+echo "Starting build process..."
+
+# Build for Linux (64-bit)
+echo "Building for Linux..."
+GOOS=linux GOARCH=amd64 go build -o "$LINUX_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_BIN"
+else
+    echo "Failed to build Linux binary"
+    exit 1
+fi
+
+# Build for Windows (64-bit)
+echo "Building for Windows..."
+GOOS=windows GOARCH=amd64 go build -o "$WINDOWS_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $WINDOWS_BIN"
+else
+    echo "Failed to build Windows binary"
+    exit 1
+fi
+
+# Build for Linux ARM (ARMv7)
+echo "Building for Linux ARMv7..."
+GOOS=linux GOARCH=arm GOARM=7 go build -o "$LINUX_ARM_BIN" main.go
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_ARM_BIN"
+else
+    echo "Failed to build Linux ARMv7 binary"
+    exit 1
+fi
+
+echo "Build complete."

extensions/go/ScannerCOM/go.mod

@@ -0,0 +1,7 @@
+module ScannerGO
+
+go 1.24.0
+
+require github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
+
+require golang.org/x/sys v0.41.0 // indirect

extensions/go/ScannerCOM/go.sum

@@ -0,0 +1,4 @@
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 h1:UyzmZLoiDWMRywV4DUYb9Fbt8uiOSooupjTq10vpvnU=
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=

extensions/go/ScannerCOM/main.go

@@ -0,0 +1,175 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/tarm/serial"
+)
+
+type Config struct {
+	Port        string `json:"port"`
+	URL         string `json:"url"`
+	BaudRate    int    `json:"baud"`
+	Delimiter   string `json:"delimiter"`
+	FlowControl string `json:"flow_control"`
+}
+
+var defaultConfig = Config{
+	Port:        "/dev/ttyACM0",
+	URL:         "https://scanner.sekidesu.xyz/scan",
+	BaudRate:    115200,
+	Delimiter:   "\n",
+	FlowControl: "none",
+}
+
+const configPath = "config.json"
+
+func main() {
+	cfg := loadConfig()
+
+	portName := flag.String("port", cfg.Port, "Serial port name")
+	endpoint := flag.String("url", cfg.URL, "Target URL endpoint")
+	baudRate := flag.Int("baud", cfg.BaudRate, "Baud rate")
+	delim := flag.String("delim", cfg.Delimiter, "Line delimiter")
+	flow := flag.String("flow", cfg.FlowControl, "Flow control: none, hardware, software")
+	save := flag.Bool("save", false, "Save current parameters to config.json")
+	flag.Parse()
+
+	cfg.Port = *portName
+	cfg.URL = *endpoint
+	cfg.BaudRate = *baudRate
+	cfg.Delimiter = *delim
+	cfg.FlowControl = *flow
+
+	if *save {
+		saveConfig(cfg)
+		fmt.Println("Settings saved to", configPath)
+	}
+
+	serialConfig := &serial.Config{
+		Name:        cfg.Port,
+		Baud:        cfg.BaudRate,
+		ReadTimeout: time.Millisecond * 500,
+	}
+
+	// tarm/serial uses boolean flags for flow control if available in the version used
+	// If your version doesn't support these fields, you may need to update the package
+	// or manage the lines manually via the file descriptor.
+	/* Note: tarm/serial usually requires specific fork or version
+	   for full RTS/CTS hardware flow control support.
+	*/
+
+	port, err := serial.OpenPort(serialConfig)
+	if err != nil {
+		fmt.Printf("Error opening port %s: %v\n", cfg.Port, err)
+		os.Exit(1)
+	}
+	defer port.Close()
+
+	fmt.Printf("Listening on %s (Baud: %d, Flow: %s)...\n", cfg.Port, cfg.BaudRate, cfg.FlowControl)
+
+	scanner := bufio.NewScanner(port)
+
+	scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
+		if atEOF && len(data) == 0 {
+			return 0, nil, nil
+		}
+		if i := bytes.Index(data, []byte(cfg.Delimiter)); i >= 0 {
+			return i + len(cfg.Delimiter), data[0:i], nil
+		}
+		if atEOF {
+			return len(data), data, nil
+		}
+		return 0, nil, nil
+	})
+
+	for scanner.Scan() {
+		rawContent := scanner.Text()
+		content := strings.TrimFunc(rawContent, func(r rune) bool {
+			return r < 32 || r > 126
+		})
+
+		if content != "" {
+			sendToEndpoint(cfg.URL, content)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		fmt.Printf("Scanner error: %v\n", err)
+	}
+}
+
+func loadConfig() Config {
+	if _, err := os.Stat(configPath); os.IsNotExist(err) {
+		saveConfig(defaultConfig)
+		return defaultConfig
+	}
+
+	file, err := os.Open(configPath)
+	if err != nil {
+		return defaultConfig
+	}
+	defer file.Close()
+
+	var cfg Config
+	decoder := json.NewDecoder(file)
+	if err := decoder.Decode(&cfg); err != nil {
+		return defaultConfig
+	}
+	if cfg.Delimiter == "" {
+		cfg.Delimiter = "\n"
+	}
+	if cfg.FlowControl == "" {
+		cfg.FlowControl = "none"
+	}
+	return cfg
+}
+
+func saveConfig(cfg Config) {
+	file, err := os.Create(configPath)
+	if err != nil {
+		fmt.Printf("Failed to create/save config: %v\n", err)
+		return
+	}
+	defer file.Close()
+
+	encoder := json.NewEncoder(file)
+	encoder.SetIndent("", "  ")
+	encoder.Encode(cfg)
+}
+
+func sendToEndpoint(baseURL, content string) {
+	client := &http.Client{
+		Timeout: 5 * time.Second,
+	}
+
+	fullURL := fmt.Sprintf("%s?content=%s", baseURL, url.QueryEscape(content))
+	resp, err := client.Get(fullURL)
+	if err != nil {
+		fmt.Printf("Network Error: %v\n", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Printf("Error reading response: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Data: [%s] | Status: %s\n", content, resp.Status)
+	if len(body) > 0 {
+		fmt.Printf("Response: %s\n", string(body))
+	}
+	fmt.Println(strings.Repeat("-", 30))
+}

extensions/go/ScannerHID/.gitignore

@@ -0,0 +1,2 @@
+config.json
+HIDScannerGO-*

extensions/go/ScannerHID/build.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+LINUX_BIN="HIDScannerGO-linux"
+WINDOWS_BIN="HIDScannerGO-windows.exe"
+
+echo "Starting build process..."
+
+# 1. Build for Linux (Host)
+echo "Building for Linux (64-bit)..."
+CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -o "$LINUX_BIN" .
+
+# 2. Build for Windows (Needs MinGW)
+echo "Building for Windows (64-bit)..."
+# We must point to the mingw gcc and enable CGO
+CGO_ENABLED=1 GOOS=windows GOARCH=amd64 CC=x86_64-w64-mingw32-gcc \
+go build -ldflags="-H=windowsgui" -o "$WINDOWS_BIN" .
+
+echo "Build complete."

extensions/go/ScannerHID/go.mod

@@ -0,0 +1,46 @@
+module ScannerGO
+
+go 1.24.0
+
+require (
+	fyne.io/fyne/v2 v2.7.3
+	gioui.org v0.9.0
+	github.com/google/gousb v1.1.3
+)
+
+require (
+	fyne.io/systray v1.12.0 // indirect
+	gioui.org/shader v1.0.8 // indirect
+	github.com/BurntSushi/toml v1.5.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/fredbi/uri v1.1.1 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/fyne-io/gl-js v0.2.0 // indirect
+	github.com/fyne-io/glfw-js v0.3.0 // indirect
+	github.com/fyne-io/image v0.1.1 // indirect
+	github.com/fyne-io/oksvg v0.2.0 // indirect
+	github.com/go-gl/gl v0.0.0-20231021071112-07e5d0ea2e71 // indirect
+	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20240506104042-037f3cc74f2a // indirect
+	github.com/go-text/render v0.2.0 // indirect
+	github.com/go-text/typesetting v0.3.3 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // indirect
+	github.com/hack-pad/go-indexeddb v0.3.2 // indirect
+	github.com/hack-pad/safejs v0.1.0 // indirect
+	github.com/jeandeaual/go-locale v0.0.0-20250612000132-0ef82f21eade // indirect
+	github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
+	github.com/nicksnyder/go-i18n/v2 v2.5.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rymdport/portal v0.4.2 // indirect
+	github.com/srwiley/oksvg v0.0.0-20221011165216-be6e8873101c // indirect
+	github.com/srwiley/rasterx v0.0.0-20220730225603-2ab79fcdd4ef // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	github.com/yuin/goldmark v1.7.8 // indirect
+	golang.org/x/exp/shiny v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
+	golang.org/x/image v0.26.0 // indirect
+	golang.org/x/net v0.35.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/text v0.24.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

extensions/go/ScannerHID/go.sum

@@ -0,0 +1,93 @@
+eliasnaur.com/font v0.0.0-20230308162249-dd43949cb42d h1:ARo7NCVvN2NdhLlJE9xAbKweuI9L6UgfTbYb0YwPacY=
+eliasnaur.com/font v0.0.0-20230308162249-dd43949cb42d/go.mod h1:OYVuxibdk9OSLX8vAqydtRPP87PyTFcT9uH3MlEGBQA=
+fyne.io/fyne/v2 v2.7.3 h1:xBT/iYbdnNHONWO38fZMBrVBiJG8rV/Jypmy4tVfRWE=
+fyne.io/fyne/v2 v2.7.3/go.mod h1:gu+dlIcZWSzKZmnrY8Fbnj2Hirabv2ek+AKsfQ2bBlw=
+fyne.io/systray v1.12.0 h1:CA1Kk0e2zwFlxtc02L3QFSiIbxJ/P0n582YrZHT7aTM=
+fyne.io/systray v1.12.0/go.mod h1:RVwqP9nYMo7h5zViCBHri2FgjXF7H2cub7MAq4NSoLs=
+gioui.org v0.9.0 h1:4u7XZwnb5kzQW91Nz/vR0wKD6LdW9CaVF96r3rfy4kc=
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extensions/go/ScannerHID/main.go

@@ -0,0 +1,246 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"image/color"
+	"net/http"
+	"os"
+	"time"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/app"
+	"fyne.io/fyne/v2/canvas"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+	"github.com/google/gousb"
+)
+
+type Config struct {
+	TargetURL string `json:"target_url"`
+	VendorID  uint16 `json:"vendor_id"`
+	ProductID uint16 `json:"product_id"`
+}
+
+var hidMap = map[byte]string{
+	4: "a", 5: "b", 6: "c", 7: "d", 8: "e", 9: "f", 10: "g", 11: "h", 12: "i",
+	13: "j", 14: "k", 15: "l", 16: "m", 17: "n", 18: "o", 19: "p", 20: "q",
+	21: "r", 22: "s", 23: "t", 24: "u", 25: "v", 26: "w", 27: "x", 28: "y", 29: "z",
+	30: "1", 31: "2", 32: "3", 33: "4", 34: "5", 35: "6", 36: "7", 37: "8", 38: "9", 39: "0",
+	44: " ", 45: "-", 46: "=", 55: ".", 56: "/",
+}
+
+type BridgeApp struct {
+	urlEntry *widget.Entry
+	status   *canvas.Text
+	logList  *widget.List
+	logs     []string
+	window   fyne.Window
+	config   Config
+	isCLI    bool
+}
+
+func (b *BridgeApp) saveConfig() {
+	b.config.TargetURL = b.urlEntry.Text
+	data, _ := json.MarshalIndent(b.config, "", "  ")
+	_ = os.WriteFile("config.json", data, 0644)
+}
+
+func loadConfig() Config {
+	conf := Config{
+		TargetURL: "https://scanner.sekidesu.xyz/scan",
+		VendorID:  0xFFFF,
+		ProductID: 0x0035,
+	}
+	file, err := os.ReadFile("config.json")
+	if err == nil {
+		json.Unmarshal(file, &conf)
+	} else {
+		// Create default config if missing
+		data, _ := json.MarshalIndent(conf, "", "  ")
+		os.WriteFile("config.json", data, 0644)
+	}
+	return conf
+}
+
+func main() {
+	cliMode := flag.Bool("cli", false, "Run in CLI mode without GUI")
+	flag.Parse()
+
+	conf := loadConfig()
+	bridge := &BridgeApp{
+		config: conf,
+		isCLI:  *cliMode,
+	}
+
+	if *cliMode {
+		fmt.Println("Running in CLI mode...")
+		bridge.usbListenLoop()
+		return
+	}
+
+	a := app.New()
+	w := a.NewWindow("POS Hardware Bridge (Go)")
+	bridge.window = w
+	bridge.urlEntry = widget.NewEntry()
+	bridge.urlEntry.SetText(conf.TargetURL)
+	bridge.status = canvas.NewText("Status: Booting...", color.Black)
+	bridge.status.TextSize = 14
+
+	bridge.logList = widget.NewList(
+		func() int { return len(bridge.logs) },
+					func() fyne.CanvasObject { return widget.NewLabel("template") },
+					func(i widget.ListItemID, o fyne.CanvasObject) {
+						o.(*widget.Label).SetText(bridge.logs[i])
+					},
+	)
+
+	content := container.NewBorder(
+		container.NewVBox(
+			widget.NewLabel("Target POS Endpoint:"),
+				  bridge.urlEntry,
+		    bridge.status,
+		    widget.NewLabel("Activity Log:"),
+		),
+		nil, nil, nil,
+		bridge.logList,
+	)
+
+	w.SetContent(content)
+	w.Resize(fyne.NewSize(500, 400))
+
+	w.SetOnClosed(func() {
+		if !bridge.isCLI {
+			bridge.config.TargetURL = bridge.urlEntry.Text
+			data, err := json.MarshalIndent(bridge.config, "", "  ")
+			if err == nil {
+				_ = os.WriteFile("config.json", data, 0644)
+				fmt.Println("Configuration saved.")
+			}
+		}
+	})
+
+	go bridge.usbListenLoop()
+	w.ShowAndRun()
+}
+
+func (b *BridgeApp) addLog(msg string) {
+	ts := time.Now().Format("15:04:05")
+	formatted := fmt.Sprintf("[%s] %s", ts, msg)
+
+		if b.isCLI {
+			fmt.Println(formatted)
+			return
+		}
+
+		fyne.DoAndWait(func() {
+			b.logs = append([]string{formatted}, b.logs...)
+			if len(b.logs) > 15 {
+				b.logs = b.logs[:15]
+			}
+			b.logList.Refresh()
+		})
+}
+
+func (b *BridgeApp) updateStatus(msg string, col color.Color) {
+	if b.isCLI {
+		fmt.Printf("STATUS: %s\n", msg)
+		return
+	}
+	fyne.DoAndWait(func() {
+		b.status.Text = msg
+		b.status.Color = col
+		b.status.Refresh()
+	})
+}
+
+func (b *BridgeApp) sendToPos(barcode string) {
+	url := b.config.TargetURL
+	if !b.isCLI {
+		url = b.urlEntry.Text
+	}
+
+	b.addLog(fmt.Sprintf("Captured: %s. Sending to %s", barcode, url))
+	client := http.Client{Timeout: 3 * time.Second}
+	resp, err := client.Get(url + "?content=" + barcode)
+	if err != nil {
+		b.addLog("HTTP Error: Backend unreachable")
+		return
+	}
+	defer resp.Body.Close()
+	b.addLog(fmt.Sprintf("Success: POS returned %d", resp.StatusCode))
+}
+
+func (b *BridgeApp) usbListenLoop() {
+	ctx := gousb.NewContext()
+	defer ctx.Close()
+
+	for {
+		dev, err := ctx.OpenDeviceWithVIDPID(gousb.ID(b.config.VendorID), gousb.ID(b.config.ProductID))
+
+		if err != nil || dev == nil {
+			b.updateStatus("Scanner unplugged. Waiting...", color.NRGBA{200, 0, 0, 255})
+			time.Sleep(2 * time.Second)
+			continue
+		}
+
+		b.updateStatus("Scanner Locked & Ready", color.NRGBA{0, 180, 0, 255})
+
+		intf, done, err := dev.DefaultInterface()
+		if err != nil {
+			b.addLog("Error claiming interface")
+			dev.Close()
+			time.Sleep(2 * time.Second)
+			continue
+		}
+
+		var inEp *gousb.InEndpoint
+		for _, epDesc := range intf.Setting.Endpoints {
+			if epDesc.Direction == gousb.EndpointDirectionIn {
+				inEp, _ = intf.InEndpoint(epDesc.Number)
+				break
+			}
+		}
+
+		if inEp == nil {
+			b.addLog("No IN endpoint found")
+			done()
+			dev.Close()
+			continue
+		}
+
+		currentBarcode := ""
+		buf := make([]byte, inEp.Desc.MaxPacketSize)
+
+		for {
+			n, err := inEp.Read(buf)
+			if err != nil {
+				break
+			}
+			if n < 3 || buf[2] == 0 {
+				continue
+			}
+
+			modifier := buf[0]
+			keycode := buf[2]
+			isShift := (modifier == 2 || modifier == 32)
+
+			if keycode == 40 {
+				if currentBarcode != "" {
+					go b.sendToPos(currentBarcode)
+					currentBarcode = ""
+				}
+			} else if val, ok := hidMap[keycode]; ok {
+				if isShift && len(val) == 1 && val[0] >= 'a' && val[0] <= 'z' {
+					val = string(val[0] - 32)
+				}
+				currentBarcode += val
+			}
+		}
+
+		done()
+		dev.Close()
+		b.addLog("Hardware connection lost. Reconnecting...")
+	}
+}