add token config

internal/config/config.go

@@ -31,9 +31,15 @@ type FuncConfig struct {
 	FunctionDir string `mapstructure:"func_dir"`
 }
 
+type Auth struct {
+	RefreshTokenTTL time.Duration `mapstructure:"refresh_token_ttl"`
+	AccessTokenTTL  time.Duration `mapstructure:"access_token_ttl"`
+}
+
 type Config struct {
 	Server    ServerConfig `mapstructure:"server"`
 	Functions FuncConfig   `mapstructure:"functions"`
+	Auth      Auth         `mapstructure:"auth"`
 }
 
 var configPath atomic.Value // string
@@ -49,6 +55,9 @@ var defaults = map[string]any{
 	"server.block.block_dir":   "./blocks",
 
 	"functions.func_dir": "./functions",
+
+	"auth.refresh_token_ttl": 24 * time.Hour,
+	"auth.access_token_ttl":  15 * time.Minute,
 }
 
 func read(cfg *Config) error {