Initial chaos

pkg/jwt/jwt.go

@@ -0,0 +1,51 @@
+package jwt
+
+import (
+	"errors"
+	"strings"
+	"time"
+
+	"twitch-clone/pkg/models"
+
+	jwt "github.com/golang-jwt/jwt"
+)
+
+func GenerateJWT(user models.Claim) (string, error) {
+	payload := jwt.MapClaims{
+		"id":  user.ID,
+		"exp": time.Now().Add(time.Hour * 1500).Unix(),
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, payload)
+	tokenStr, err := token.SignedString([]byte(SecretKey))
+
+	if err != nil {
+		return tokenStr, err
+	}
+	return tokenStr, nil
+}
+
+func ProcessJWT(token string) (*models.Claim, bool, int64, error) {
+	claims := &models.Claim{}
+
+	splitToken := strings.Split(token, "Bearer")
+
+	if len(splitToken) != 2 {
+		return claims, false, 0, errors.New("invalid JWT format")
+	}
+
+	token = strings.TrimSpace(splitToken[1])
+	tkn, err := jwt.ParseWithClaims(token, claims, func(tk *jwt.Token) (interface{}, error) {
+		return []byte(SecretKey), nil
+	})
+
+	if err != nil {
+		return claims, false, 0, err
+	}
+
+	if !tkn.Valid {
+		return claims, false, 0, errors.New("invalid JWT token")
+	}
+
+	// TODO: validate whether user exists
+	return claims, true, claims.ID, nil
+}

pkg/jwt/secret.go

@@ -0,0 +1,3 @@
+package jwt
+
+const SecretKey = "secret"