package telemetry

// Config holds OTel bootstrap configuration.
type Config struct {
	// ServiceName identifies the service in traces, metrics, and logs.
	ServiceName string `env:"EINHERJAR_OTEL_SERVICE_NAME,required"`
	// ServiceVersion is the deployed version (e.g. "1.4.2").
	ServiceVersion string `env:"EINHERJAR_OTEL_SERVICE_VERSION" envDefault:"unknown"`
	// Environment is the deployment environment (e.g. "production", "staging").
	Environment string `env:"EINHERJAR_OTEL_ENVIRONMENT" envDefault:"development"`
	// OTLPEndpoint is the OTLP gRPC collector address (e.g. "alloy:4317").
	OTLPEndpoint string `env:"EINHERJAR_OTEL_EXPORTER_ENDPOINT,required"`
	// OTLPInsecure disables TLS for the OTLP connection. Set true in development.
	OTLPInsecure bool `env:"EINHERJAR_OTEL_EXPORTER_INSECURE" envDefault:"false"`
}

// DefaultConfig returns a Config with optional fields set to production-safe defaults.
// Callers must supply ServiceName and OTLPEndpoint.
func DefaultConfig() Config {
	return Config{
		ServiceVersion: "unknown",
		Environment:    "development",
		OTLPInsecure:   false,
	}
}