WIP: auto env generator

be/app/api.go

@@ -39,8 +39,6 @@ func ApiGet(w http.ResponseWriter, r *http.Request) {
 		file = "../public/index.html" // default
 	}
 
-	// app.MCRMLog("GET:", file)
-
 	http.ServeFile(w, r, file) // serve file
 }
 

be/app/helper/encrypt-helper.go

@@ -7,6 +7,9 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"errors"
+	"math"
+	mathRand "math/rand"
+	"strconv"
 	"strings"
 )
 
@@ -62,7 +65,7 @@ func DecryptAES(key string, cryptedText string) (string, error) {
 	return origDataString, nil
 }
 
-func generateRandomString(length int) string {
+func GenerateRandomString(length int) string {
 	b := make([]byte, length)
 	_, err := rand.Read(b)
 	if err != nil {
@@ -71,8 +74,15 @@ func generateRandomString(length int) string {
 	return base64.StdEncoding.EncodeToString(b)
 }
 
+func GenerateRandomIntegerString(length int) string {
+	min := int64(0)
+	max := int64(math.Pow10(length))
+	randInt := min + mathRand.Int63()%(max-min+1)
+	return strconv.FormatInt(randInt, 10)
+}
+
 func GenerateKey() string {
-	return strings.Replace(generateRandomString(24), "=", "", -1)
+	return strings.Replace(GenerateRandomString(24), "=", "", -1)
 }
 
 func keyToBytes(key string) []byte {

be/app/helper/env-helper.go

@@ -1,15 +1,60 @@
 package helper
 
 import (
+	"log"
+	"net"
 	"os"
+	"strconv"
 
 	"github.com/joho/godotenv"
 )
 
 func EnvGet(key string) string {
-	err := godotenv.Load("../.env")
+	envFile := "../.env"
+	fileExists := func() bool {
+		_, err := os.Stat(envFile)
+		return err == nil
+	}
+	if !fileExists() {
+		createEnvFile(envFile)
+	}
+	err := godotenv.Load(envFile)
 	if err != nil {
 		return ""
 	}
 	return os.Getenv("VITE_" + key)
 }
+
+func createEnvFile(filename string) {
+	log.Println("Creating .env file...")
+	file, err := os.Create(filename)
+	if err != nil {
+		log.Println(err)
+	}
+	defer file.Close()
+	// You can add some default values to the .env file here if needed
+	// For example:
+	port, err := findOpenPort()
+	salt := GenerateRandomString(28)
+	iv := GenerateRandomIntegerString(16)
+
+	log.Println(err, salt, iv)
+
+	_, err = file.WriteString("VITE_MCRM__PORT=" + string(port) + "\nVITE_MCRM__SALT=" + salt + "\nVITE_MCRM__IV=" + iv)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func findOpenPort() (string, error) {
+	addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
+	if err != nil {
+		return "", err
+	}
+	l, err := net.ListenTCP("tcp", addr)
+	if err != nil {
+		return "", err
+	}
+	defer l.Close()
+	return strconv.Itoa(l.Addr().(*net.TCPAddr).Port), nil
+}