Phase 2 completed: Stream Server Auth, Database and Business API

internal/utils/utils.go

@@ -0,0 +1,55 @@
+package utils
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// In production, load this from environment variables
+var jwtKey = []byte("hightube_super_secret_key_MVP_only")
+
+// GenerateToken generates a JWT token for a given user ID
+func GenerateToken(userID uint) (string, error) {
+	claims := &jwt.RegisteredClaims{
+		Subject:   fmt.Sprintf("%d", userID),
+		ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(jwtKey)
+}
+
+// ParseToken parses the JWT string and returns the user ID (Subject)
+func ParseToken(tokenStr string) (string, error) {
+	claims := &jwt.RegisteredClaims{}
+	token, err := jwt.ParseWithClaims(tokenStr, claims, func(t *jwt.Token) (interface{}, error) {
+		return jwtKey, nil
+	})
+	if err != nil || !token.Valid {
+		return "", err
+	}
+	return claims.Subject, nil
+}
+
+// HashPassword creates a bcrypt hash of the password
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(bytes), err
+}
+
+// CheckPasswordHash compares a bcrypt hashed password with its possible plaintext equivalent
+func CheckPasswordHash(password, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}
+
+// GenerateStreamKey generates a random string to be used as a stream key
+func GenerateStreamKey() string {
+	bytes := make([]byte, 16)
+	rand.Read(bytes)
+	return hex.EncodeToString(bytes)
+}