feat: mail service

integration/gatewayauthsessionuser/gateway_authsession_user_test.go

@@ -61,6 +61,30 @@ func TestGatewayAuthsessionUserExistingAccountKeepsCreateOnlySettings(t *testing
 	require.Equal(t, "Europe/Paris", accountResponse.Account.TimeZone)
 }
 
+func TestGatewayAuthsessionUserAcceptLanguageSetsLocalizedPreferredLanguage(t *testing.T) {
+	h := newGatewayAuthsessionUserHarness(t)
+
+	const email = "localized@example.com"
+
+	challengeID := h.sendChallengeWithAcceptLanguage(t, email, "fr-FR, en;q=0.8")
+	deliveries := h.mailStub.RecordedDeliveries()
+	require.NotEmpty(t, deliveries)
+	require.Equal(t, "fr-FR", deliveries[len(deliveries)-1].Locale)
+
+	code := lastMailCodeFor(t, h.mailStub, email)
+	clientPrivateKey := newClientPrivateKey("localized-account")
+
+	confirmResponse := h.confirmCode(t, challengeID, code, clientPrivateKey)
+	var confirmBody struct {
+		DeviceSessionID string `json:"device_session_id"`
+	}
+	requireJSONStatus(t, confirmResponse, http.StatusOK, &confirmBody)
+
+	accountResponse := h.executeGetMyAccount(t, confirmBody.DeviceSessionID, "request-localized-account", clientPrivateKey)
+	require.Equal(t, "fr-FR", accountResponse.Account.PreferredLanguage)
+	require.Equal(t, gatewayAuthsessionUserTestTimeZone, accountResponse.Account.TimeZone)
+}
+
 func TestGatewayAuthsessionUserBlockedEmailAndUserBehavior(t *testing.T) {
 	h := newGatewayAuthsessionUserHarness(t)
 

integration/gatewayauthsessionuser/harness_test.go

@@ -148,9 +148,18 @@ func newGatewayAuthsessionUserHarness(t *testing.T) *gatewayAuthsessionUserHarne
 func (h *gatewayAuthsessionUserHarness) sendChallenge(t *testing.T, email string) string {
 	t.Helper()
 
-	response := postJSONValue(t, h.gatewayPublicURL+"/api/v1/public/auth/send-email-code", map[string]string{
-		"email": email,
-	})
+	return h.sendChallengeWithAcceptLanguage(t, email, "")
+}
+
+func (h *gatewayAuthsessionUserHarness) sendChallengeWithAcceptLanguage(t *testing.T, email string, acceptLanguage string) string {
+	t.Helper()
+
+	response := postJSONValueWithHeaders(
+		t,
+		h.gatewayPublicURL+"/api/v1/public/auth/send-email-code",
+		map[string]string{"email": email},
+		map[string]string{"Accept-Language": acceptLanguage},
+	)
 	require.Equal(t, http.StatusOK, response.StatusCode)
 
 	var body struct {
@@ -299,12 +308,24 @@ type userLookupResponse struct {
 func postJSONValue(t *testing.T, targetURL string, body any) httpResponse {
 	t.Helper()
 
+	return postJSONValueWithHeaders(t, targetURL, body, nil)
+}
+
+func postJSONValueWithHeaders(t *testing.T, targetURL string, body any, headers map[string]string) httpResponse {
+	t.Helper()
+
 	payload, err := json.Marshal(body)
 	require.NoError(t, err)
 
 	request, err := http.NewRequest(http.MethodPost, targetURL, bytes.NewReader(payload))
 	require.NoError(t, err)
 	request.Header.Set("Content-Type", "application/json")
+	for key, value := range headers {
+		if value == "" {
+			continue
+		}
+		request.Header.Set(key, value)
+	}
 
 	client := &http.Client{Timeout: 5 * time.Second}
 	response, err := client.Do(request)