fixes on structuring

pkg/middleware/auth.go

@@ -1,7 +1,58 @@
 package middleware
 
-import "github.com/gin-gonic/gin"
+import (
+	"fmt"
+	"os"
+	"strings"
+	"wallet-api/pkg/models"
+	"wallet-api/pkg/utl/configs"
+
+	"github.com/dgrijalva/jwt-go"
+
+	"github.com/gin-gonic/gin"
+)
 
 func Auth(c *gin.Context) {
+	exceptionReturn := new(models.ExceptionModel)
+	tokenString := ExtractToken(c)
+	secret := os.Getenv("ACCESS_SECRET")
+	if secret == "" {
+		secret = configs.Secret
+	}
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		_, ok := token.Method.(*jwt.SigningMethodHMAC)
+		println(ok)
+		if !ok {
+			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+		}
+		return []byte(secret), nil
+	})
+	if err != nil {
+		exceptionReturn.ErrorCode = "401001"
+		exceptionReturn.StatusCode = 401
+		exceptionReturn.Message = "Invalid token"
+		c.AbortWithStatusJSON(exceptionReturn.StatusCode, exceptionReturn)
+	}
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if ok && token.Valid {
+		userId, _ := claims["id"].(string)
 
+		authModel := new(models.AuthModel)
+		authModel.Id = userId
+
+		c.Set("auth", authModel)
+	}
+	c.Next()
+}
+
+func ExtractToken(c *gin.Context) string {
+	bearerToken := c.GetHeader("Authorization")
+	tokenArr := strings.Split(bearerToken, " ")
+	if len(tokenArr) == 2 {
+		bearerCheck := strings.ToLower(tokenArr[0])
+		if bearerCheck == "bearer" {
+			return tokenArr[1]
+		}
+	}
+	return ""
 }