package config

import (
	"os"
	"testing"
	"time"
)

func TestLoadDefaults(t *testing.T) {
	s := Load()
	if s.ServiceName != "handler" {
		t.Errorf("expected default ServiceName 'handler', got %q", s.ServiceName)
	}
	if s.HealthPort != 8080 {
		t.Errorf("expected default HealthPort 8080, got %d", s.HealthPort)
	}
	if s.HTTPTimeout != 60*time.Second {
		t.Errorf("expected default HTTPTimeout 60s, got %v", s.HTTPTimeout)
	}
}

func TestLoadFromEnv(t *testing.T) {
	os.Setenv("SERVICE_NAME", "test-svc")
	os.Setenv("HEALTH_PORT", "9090")
	os.Setenv("OTEL_ENABLED", "false")
	defer func() {
		os.Unsetenv("SERVICE_NAME")
		os.Unsetenv("HEALTH_PORT")
		os.Unsetenv("OTEL_ENABLED")
	}()

	s := Load()
	if s.ServiceName != "test-svc" {
		t.Errorf("expected ServiceName 'test-svc', got %q", s.ServiceName)
	}
	if s.HealthPort != 9090 {
		t.Errorf("expected HealthPort 9090, got %d", s.HealthPort)
	}
	if s.OTELEnabled {
		t.Error("expected OTELEnabled false")
	}
}