Add logout resolver

Resolves #8

server/utils/authToken.go

@@ -1,8 +1,12 @@
 package utils
 
 import (
+	"errors"
+	"log"
+	"strings"
 	"time"
 
+	"github.com/gin-gonic/gin"
 	"github.com/golang-jwt/jwt"
 	"github.com/yauthdev/yauth/server/constants"
 	"github.com/yauthdev/yauth/server/enum"
@@ -37,3 +41,34 @@ func CreateAuthToken(user UserAuthInfo, tokenType enum.TokenType) (string, error
 
 	return t.SignedString([]byte(constants.JWT_SECRET))
 }
+
+func GetAuthToken(gc *gin.Context) (string, error) {
+	token := ""
+	cookie, err := gc.Request.Cookie(constants.COOKIE_NAME)
+	if err != nil {
+		// try to check in auth header for cookie
+		log.Println("cookie not found checking headers")
+		auth := gc.Request.Header.Get("Authorization")
+		if auth == "" {
+			return "", errors.New(`Unauthorized`)
+		}
+
+		token = strings.TrimPrefix(auth, "Bearer ")
+	} else {
+		token = cookie.Value
+	}
+
+	return token, nil
+}
+
+func VerifyAuthToken(token string) (*UserAuthClaim, error) {
+	claims := &UserAuthClaim{}
+	_, err := jwt.ParseWithClaims(token, claims, func(token *jwt.Token) (interface{}, error) {
+		return []byte(constants.JWT_SECRET), nil
+	})
+	if err != nil {
+		return claims, err
+	}
+
+	return claims, nil
+}

server/utils/cookie.go

@@ -15,3 +15,14 @@ func SetCookie(gc *gin.Context, token string) {
 
 	gc.SetCookie(constants.COOKIE_NAME, token, 3600, "/", GetFrontendHost(), secure, httpOnly)
 }
+
+func DeleteCookie(gc *gin.Context) {
+	secure := true
+	httpOnly := true
+
+	if !constants.IS_PROD {
+		secure = false
+	}
+
+	gc.SetCookie(constants.COOKIE_NAME, "", -1, "/", GetFrontendHost(), secure, httpOnly)
+}