feat: mail service

gateway/internal/restapi/auth_service_http_client_test.go

@@ -66,12 +66,14 @@ func TestHTTPAuthServiceClientSendEmailCodeSuccess(t *testing.T) {
 	t.Parallel()
 
 	var requestContentType string
+	var requestAcceptLanguage string
 	var requestBody string
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		assert.Equal(t, http.MethodPost, r.Method)
 		assert.Equal(t, authServiceSendEmailCodePath, r.URL.Path)
 
 		requestContentType = r.Header.Get("Content-Type")
+		requestAcceptLanguage = r.Header.Get("Accept-Language")
 		payload, err := io.ReadAll(r.Body)
 		require.NoError(t, err)
 		requestBody = string(payload)
@@ -85,14 +87,35 @@ func TestHTTPAuthServiceClientSendEmailCodeSuccess(t *testing.T) {
 	client := newTestHTTPAuthServiceClient(t, server)
 
 	result, err := client.SendEmailCode(context.Background(), SendEmailCodeInput{
-		Email: "pilot@example.com",
+		Email:             "pilot@example.com",
+		PreferredLanguage: "fr-FR",
 	})
 	require.NoError(t, err)
 	assert.Equal(t, SendEmailCodeResult{ChallengeID: "challenge-123"}, result)
 	assert.Equal(t, "application/json", requestContentType)
+	assert.Equal(t, "fr-FR", requestAcceptLanguage)
 	assert.JSONEq(t, `{"email":"pilot@example.com"}`, requestBody)
 }
 
+func TestHTTPAuthServiceClientSendEmailCodeDefaultsAcceptLanguageToEnglish(t *testing.T) {
+	t.Parallel()
+
+	var requestAcceptLanguage string
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requestAcceptLanguage = r.Header.Get("Accept-Language")
+		w.Header().Set("Content-Type", "application/json")
+		_, err := io.WriteString(w, `{"challenge_id":"challenge-123"}`)
+		require.NoError(t, err)
+	}))
+	defer server.Close()
+
+	client := newTestHTTPAuthServiceClient(t, server)
+
+	_, err := client.SendEmailCode(context.Background(), SendEmailCodeInput{Email: "pilot@example.com"})
+	require.NoError(t, err)
+	assert.Equal(t, "en", requestAcceptLanguage)
+}
+
 func TestHTTPAuthServiceClientConfirmEmailCodeSuccess(t *testing.T) {
 	t.Parallel()