sub2api/backend/internal/handler/admin/setting_handler_email_test.go

//go:build unit

package admin

import (
	"bytes"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/Wei-Shaw/sub2api/internal/service"

	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/require"
)

func bindSMTPRequest[T any](t *testing.T, body string) T {
	t.Helper()

	req := httptest.NewRequest(http.MethodPost, "/", bytes.NewBufferString(body))
	req.Header.Set("Content-Type", "application/json")
	c, _ := gin.CreateTestContext(httptest.NewRecorder())
	c.Request = req

	var payload T
	require.NoError(t, c.ShouldBindJSON(&payload))
	return payload
}

func TestTestSMTPRequestUseTLSOmissionFallsBackToSavedSetting(t *testing.T) {
	req := bindSMTPRequest[TestSMTPRequest](t, `{}`)

	require.Nil(t, req.SMTPUseTLS)
	require.True(t, resolveSMTPUseTLS(req.SMTPUseTLS, &service.SMTPConfig{UseTLS: true}))
}

func TestTestSMTPRequestExplicitFalseOverridesSavedUseTLS(t *testing.T) {
	req := bindSMTPRequest[TestSMTPRequest](t, `{"smtp_use_tls":false}`)

	require.NotNil(t, req.SMTPUseTLS)
	require.False(t, resolveSMTPUseTLS(req.SMTPUseTLS, &service.SMTPConfig{UseTLS: true}))
}

func TestTestSMTPRequestExplicitTrueOverridesMissingSavedUseTLS(t *testing.T) {
	req := bindSMTPRequest[TestSMTPRequest](t, `{"smtp_use_tls":true}`)

	require.NotNil(t, req.SMTPUseTLS)
	require.True(t, resolveSMTPUseTLS(req.SMTPUseTLS, nil))
}

func TestSendTestEmailRequestPreservesUseTLSOmissionSemantics(t *testing.T) {
	omitted := bindSMTPRequest[SendTestEmailRequest](t, `{"email":"admin@example.com"}`)
	explicitFalse := bindSMTPRequest[SendTestEmailRequest](t, `{"email":"admin@example.com","smtp_use_tls":false}`)
	saved := &service.SMTPConfig{UseTLS: true}

	require.True(t, resolveSMTPUseTLS(omitted.SMTPUseTLS, saved))
	require.False(t, resolveSMTPUseTLS(explicitFalse.SMTPUseTLS, saved))
}