[MM-34076] Add Plugin API User custom status (#17435)

* add missing client for custom user status

* add custom user status plugin api

* update based on feedback review

* add GetCustomStatus

* update interfaces

app/plugin_api_test.go

@@ -494,6 +494,59 @@ func TestPluginAPIGetUsersInTeam(t *testing.T) {
 	}
 }
 
+func TestPluginAPIUserCustomStatus(t *testing.T) {
+	th := Setup(t)
+	defer th.TearDown()
+	api := th.SetupPluginAPI()
+
+	user1, err := th.App.CreateUser(th.Context, &model.User{
+		Email:    strings.ToLower(model.NewId()) + "success+test@example.com",
+		Username: "user_" + model.NewId(),
+		Password: "password",
+	})
+	require.Nil(t, err)
+	defer th.App.PermanentDeleteUser(th.Context, user1)
+
+	custom := &model.CustomStatus{
+		Emoji: ":tada:",
+		Text:  "honk",
+	}
+
+	err = api.UpdateUserCustomStatus(user1.Id, custom)
+	assert.Nil(t, err)
+	userCs, err := th.App.GetCustomStatus(user1.Id)
+	assert.Nil(t, err)
+	assert.Equal(t, custom, userCs)
+
+	custom.Text = ""
+	err = api.UpdateUserCustomStatus(user1.Id, custom)
+	assert.Nil(t, err)
+	userCs, err = th.App.GetCustomStatus(user1.Id)
+	assert.Nil(t, err)
+	assert.Equal(t, custom, userCs)
+
+	custom.Text = "honk"
+	custom.Emoji = ""
+	err = api.UpdateUserCustomStatus(user1.Id, custom)
+	assert.Nil(t, err)
+	userCs, err = th.App.GetCustomStatus(user1.Id)
+	assert.Nil(t, err)
+	assert.Equal(t, custom, userCs)
+
+	custom.Text = ""
+	err = api.UpdateUserCustomStatus(user1.Id, custom)
+	assert.NotNil(t, err)
+	assert.Equal(t, err.Error(), "SetCustomStatus: Failed to update the custom status. Please add either emoji or custom text status or both., ")
+
+	// Remove custom status
+	err = api.RemoveUserCustomStatus(user1.Id)
+	assert.Nil(t, err)
+	var csClear *model.CustomStatus
+	userCs, err = th.App.GetCustomStatus(user1.Id)
+	assert.Nil(t, err)
+	assert.Equal(t, csClear, userCs)
+}
+
 func TestPluginAPIGetFile(t *testing.T) {
 	th := Setup(t).InitBasic()
 	defer th.TearDown()
@@ -715,7 +768,6 @@ func TestPluginAPILoadPluginConfiguration(t *testing.T) {
 		]
 	}}`)
 	require.NoError(t, err)
-
 }
 
 func TestPluginAPILoadPluginConfigurationDefaults(t *testing.T) {
@@ -755,7 +807,6 @@ func TestPluginAPILoadPluginConfigurationDefaults(t *testing.T) {
 	}`)
 
 	require.NoError(t, err)
-
 }
 
 func TestPluginAPIGetPlugins(t *testing.T) {
@@ -1084,6 +1135,7 @@ func pluginAPIHookTest(t *testing.T, th *TestHelper, fileName string, id string,
 	if ret != "OK" {
 		return errors.New(ret)
 	}
+
 	return nil
 }
 
@@ -1284,7 +1336,6 @@ func TestPluginCreateBot(t *testing.T) {
 		Description: "bot2",
 	})
 	require.NotNil(t, err)
-
 }
 
 func TestPluginCreatePostWithUploadedFile(t *testing.T) {
@@ -1748,6 +1799,7 @@ type MockSlashCommandProvider struct {
 func (*MockSlashCommandProvider) GetTrigger() string {
 	return "mock"
 }
+
 func (*MockSlashCommandProvider) GetCommand(a *App, T i18n.TranslateFunc) *model.Command {
 	return &model.Command{
 		Trigger:          "mock",
@@ -1757,6 +1809,7 @@ func (*MockSlashCommandProvider) GetCommand(a *App, T i18n.TranslateFunc) *model
 		DisplayName:      "mock",
 	}
 }
+
 func (mscp *MockSlashCommandProvider) DoCommand(a *App, c *request.Context, args *model.CommandArgs, message string) *model.CommandResponse {
 	mscp.Args = args
 	mscp.Message = message
@@ -1920,7 +1973,6 @@ func TestPluginAPIUpdateCommand(t *testing.T) {
 	require.NoError(t, appErr)
 	require.Equal(t, "anothernewtriggeragain", newCmd4.Trigger)
 	require.Equal(t, team1.Id, newCmd4.TeamId)
-
 }
 
 func TestPluginAPIIsEnterpriseReady(t *testing.T) {