Convert User expose ID each time (#12855)

* git blame tells me a lot of gitea things happen here around 2018, add header

* move user code int its own file

* expose user id

* adopt things from APIFormat

* fix test

* CI.restart()

integrations/api_user_search_test.go

@@ -5,9 +5,12 @@
 package integrations
 
 import (
+	"fmt"
 	"net/http"
 	"testing"
 
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
@@ -45,8 +48,14 @@ func TestAPIUserSearchNotLoggedIn(t *testing.T) {
 	var results SearchResults
 	DecodeJSON(t, resp, &results)
 	assert.NotEmpty(t, results.Data)
+	var modelUser *models.User
 	for _, user := range results.Data {
 		assert.Contains(t, user.UserName, query)
-		assert.Empty(t, user.Email)
+		modelUser = models.AssertExistsAndLoadBean(t, &models.User{ID: user.ID}).(*models.User)
+		if modelUser.KeepEmailPrivate {
+			assert.EqualValues(t, fmt.Sprintf("%s@%s", modelUser.LowerName, setting.Service.NoReplyAddress), user.Email)
+		} else {
+			assert.EqualValues(t, modelUser.Email, user.Email)
+		}
 	}
 }