feat: 1.2.0 add QR code file output

README.md

@@ -70,27 +70,32 @@ passgen -b         # 24 words in English
 passgen -b -12     # 12 words in English
 ```
 
-#### 🌐 Supported Languages
+### 🔍 Help Command
 ```bash
-# Full phrases (24 words)
-passgen -b -en     # 🇬🇧 English (default)
-passgen -b -ru     # 🇷🇺 Russian (Русский)
-passgen -b -jp     # 🇯🇵 Japanese (日本語)
-passgen -b -cn     # 🇨🇳 Chinese (简体中文)
-passgen -b -fr     # 🇫🇷 French (Français)
-passgen -b -it     # 🇮🇹 Italian (Italiano)
-passgen -b -ko     # 🇰🇷 Korean (한국어)
-passgen -b -es     # 🇪🇸 Spanish (Español)
-
-# Short phrases (12 words)
-passgen -b -12 -en    # 🇬🇧 English
-passgen -b -12 -ru    # 🇷🇺 Русский
-passgen -b -12 -jp    # 🇯🇵 日本語
-passgen -b -12 -cn    # 🇨🇳 简体中文
-passgen -b -12 -fr    # 🇫🇷 Français
-passgen -b -12 -it    # 🇮🇹 Italiano
-passgen -b -12 -ko    # 🇰🇷 한국어
-passgen -b -12 -es    # 🇪🇸 Español
+# Show all available options
+passgen -help
+passgen -h
+
+# Output includes:
+  -12
+        Generate 12-word mnemonic (default is 24)
+  -b, -bip39
+        Generate BIP39 mnemonic
+  -l, -length int
+        Password length (default 24-28)
+  -o string
+        Output file for QR code (PNG format)
+  -s int
+        QR code size in pixels (default: 256)
+# Language options:
+  -en    Use English wordlist (default)    # 🇬🇧
+  -ru    Use Russian wordlist              # 🇷🇺
+  -jp    Use Japanese wordlist             # 🇯🇵
+  -cn    Use Chinese wordlist              # 🇨🇳
+  -fr    Use French wordlist               # 🇫🇷
+  -it    Use Italian wordlist              # 🇮🇹
+  -ko    Use Korean wordlist               # 🇰🇷
+  -es    Use Spanish wordlist              # 🇪🇸
 ```
 
 ### 📤 Output Features
@@ -99,6 +104,33 @@ Every generated password or mnemonic is automatically:
 - 📋 Copied to clipboard
 - 📱 Converted to QR code
 
+### QR Code Options
+```bash
+# Display QR in terminal (default)
+passgen -b
+
+# Save QR as PNG file (default size: 256x256)
+passgen -b -o mnemonic.png
+
+# Save QR with custom size (in pixels)
+passgen -b -o mnemonic.png -s 512    # 512x512
+passgen -b -o mnemonic.png -s 1024   # 1024x1024
+
+# Save QR with custom path
+passgen -b -o ~/Documents/mnemonic.png
+passgen -b -o ../backup/phrase.png
+
+# Examples with different options combined
+passgen -b -12 -ru -o russian-12words.png -s 512     # Russian 12-word phrase, 512x512 QR
+passgen -b -jp -o ~/backup/japanese.png -s 1024      # Japanese 24-word phrase, 1024x1024 QR
+passgen -l 32 -o password.png                        # 32-char password QR
+```
+
+All outputs (password/mnemonic) are still:
+- 📝 Displayed in terminal
+- 📋 Copied to clipboard
+- 💾 Saved as QR code (if -o flag is used)
+
 ## 🏗️ Project Structure
 ```
 passGen/

cmd/passgen/main.go

@@ -16,12 +16,16 @@ func main() {
 	var useBip39 bool
 	var useShort bool
 	var lang string
+	var outputFile string
+	var qrSize int
 
 	flag.IntVar(&length, "length", 0, "Password length (default 24-28)")
 	flag.IntVar(&length, "l", 0, "Password length (shorthand)")
 	flag.BoolVar(&useBip39, "bip39", false, "Generate BIP39 mnemonic")
 	flag.BoolVar(&useBip39, "b", false, "Generate BIP39 mnemonic (shorthand)")
 	flag.BoolVar(&useShort, "12", false, "Generate 12-word mnemonic (default is 24)")
+	flag.StringVar(&outputFile, "o", "", "Output file for QR code (PNG format)")
+	flag.IntVar(&qrSize, "s", 256, "QR code size in pixels (default: 256)")
 
 	// Флаги для языков
 	var langRu, langEn, langJp, langFr, langIt, langKo, langCn, langEs bool
@@ -95,11 +99,19 @@ func main() {
 		fmt.Println("Copied to clipboard")
 	}
 
-	qrCode, err := qr.Generate(result)
-	if err != nil {
-		log.Printf("Failed to create QR code: %v", err)
+	if outputFile != "" {
+		if err := qr.GenerateToFile(result, outputFile, qrSize); err != nil {
+			log.Printf("Failed to save QR code to file: %v", err)
+		} else {
+			fmt.Printf("QR code saved to: %s\n", outputFile)
+		}
 	} else {
-		fmt.Println("\nQR code:")
-		fmt.Println(qrCode)
+		qrCode, err := qr.Generate(result)
+		if err != nil {
+			log.Printf("Failed to create QR code: %v", err)
+		} else {
+			fmt.Println("\nQR code:")
+			fmt.Println(qrCode)
+		}
 	}
 }

internal/qr/qr.go

@@ -1,94 +1,28 @@
 package qr
 
 import (
-	"bytes"
+	"fmt"
 
 	"github.com/skip2/go-qrcode"
 )
 
-// Generate creates QR code from string and returns it as terminal-friendly string
+// Generate creates QR code as ASCII art
 func Generate(text string) (string, error) {
-	qr, err := qrcode.New(text, qrcode.Low)
+	qr, err := qrcode.New(text, qrcode.Medium)
 	if err != nil {
-		return "", err
+		return "", fmt.Errorf("failed to generate QR code: %v", err)
 	}
-
-	var buf bytes.Buffer
-	grid := qr.Bitmap()
-
-	// Находим границы непустой области QR-кода
-	minX, maxX, minY, maxY := findBounds(grid)
-
-	// Вычисляем ширину содержимого (каждый пиксель = 2 символа)
-	width := (maxX - minX) * 2
-
-	// Верхняя граница с правильной шириной
-	buf.WriteString("┌")
-	for i := 0; i < width; i++ {
-		buf.WriteString("─")
-	}
-	buf.WriteString("┐\n")
-
-	// QR код
-	for y := minY; y < maxY; y++ {
-		buf.WriteString("│")
-		for x := minX; x < maxX; x++ {
-			if grid[y][x] {
-				buf.WriteString("██")
-			} else {
-				buf.WriteString("  ")
-			}
-		}
-		buf.WriteString("│\n")
-	}
-
-	// Нижняя граница с правильной шириной
-	buf.WriteString("└")
-	for i := 0; i < width; i++ {
-		buf.WriteString("─")
-	}
-	buf.WriteString("┘\n")
-
-	return buf.String(), nil
+	return qr.ToSmallString(false), nil
 }
 
-// findBounds находит реальные границы QR-кода без пустых областей
-func findBounds(grid [][]bool) (minX, maxX, minY, maxY int) {
-	minX, minY = len(grid), len(grid)
-	maxX, maxY = 0, 0
-
-	for y := 0; y < len(grid); y++ {
-		for x := 0; x < len(grid[y]); x++ {
-			if grid[y][x] {
-				if x < minX {
-					minX = x
-				}
-				if x > maxX {
-					maxX = x
-				}
-				if y < minY {
-					minY = y
-				}
-				if y > maxY {
-					maxY = y
-				}
-			}
-		}
-	}
-
-	// Добавляем небольшой отступ в 1 символ
-	if minX > 0 {
-		minX--
+// GenerateToFile creates QR code and saves it as PNG file
+func GenerateToFile(text string, filename string, size int) error {
+	if size == 0 {
+		size = 256 // default size
 	}
-	if maxX < len(grid)-1 {
-		maxX++
-	}
-	if minY > 0 {
-		minY--
-	}
-	if maxY < len(grid)-1 {
-		maxY++
+	err := qrcode.WriteFile(text, qrcode.Medium, size, filename)
+	if err != nil {
+		return fmt.Errorf("failed to save QR code to file: %v", err)
 	}
-
-	return minX, maxX + 1, minY, maxY + 1
+	return nil
 }