package aws

import (
	"context"
	"testing"

	mailx "code.yun.ink/pkg/mailx"
)

var _ mailx.Sender = (*Aws)(nil)

func TestConfigDefaults(t *testing.T) {
	a := New(Config{})
	if a.cfg.Region != "ap-northeast-1" {
		t.Errorf("default region = %q, want ap-northeast-1", a.cfg.Region)
	}
	// 显式指定 Region 时不应被覆盖
	a = New(Config{Region: "us-east-1"})
	if a.cfg.Region != "us-east-1" {
		t.Errorf("explicit region overwritten: %q", a.cfg.Region)
	}
}

func TestName(t *testing.T) {
	if got := New(Config{}).Name(); got != "aws" {
		t.Errorf("Name() = %q, want aws", got)
	}
}

func TestSendWithoutSender(t *testing.T) {
	// 缺少 Sender 时应立即报错，不创建 AWS 会话
	a := New(Config{})
	err := a.Send(context.Background(), mailx.NewMessage().
		To("a@b.com").
		Subject("s").
		Build())
	if err == nil {
		t.Fatal("Send without sender should error")
	}
}