[MM-13746] Add GetTeamMembersForUser and GetChannelMembersForUser apis (#10269)

* Add GetTeamMembersForUser and GetChannelMembersForUser apis

* Address comments

* Fix tests

* Fix test

* Fix comment

* Fix minimum server version

* Change to []*model.ChannelMember

* Fix panic, add more tests

* Remove print statement

app/channel.go

@@ -1207,6 +1207,22 @@ func (a *App) GetChannelMembersForUser(teamId string, userId string) (*model.Cha
 	return result.Data.(*model.ChannelMembers), nil
 }
 
+func (a *App) GetChannelMembersForUserWithPagination(teamId, userId string, page, perPage int) ([]*model.ChannelMember, *model.AppError) {
+	result := <-a.Srv.Store.Channel().GetMembersForUserWithPagination(teamId, userId, page, perPage)
+	if result.Err != nil {
+		return nil, result.Err
+	}
+
+	m := result.Data.(*model.ChannelMembers)
+	members := make([]*model.ChannelMember, 0)
+	if m != nil {
+		for _, member := range *m {
+			members = append(members, &member)
+		}
+	}
+	return members, nil
+}
+
 func (a *App) GetChannelMemberCount(channelId string) (int64, *model.AppError) {
 	result := <-a.Srv.Store.Channel().GetMemberCount(channelId, true)
 	if result.Err != nil {

app/plugin_api.go

@@ -158,6 +158,10 @@ func (api *PluginAPI) GetTeamMember(teamId, userId string) (*model.TeamMember, *
 	return api.app.GetTeamMember(teamId, userId)
 }
 
+func (api *PluginAPI) GetTeamMembersForUser(userId string, page int, perPage int) ([]*model.TeamMember, *model.AppError) {
+	return api.app.GetTeamMembersForUserWithPagination(userId, page, perPage)
+}
+
 func (api *PluginAPI) UpdateTeamMemberRoles(teamId, userId, newRoles string) (*model.TeamMember, *model.AppError) {
 	return api.app.UpdateTeamMemberRoles(teamId, userId, newRoles)
 }
@@ -375,6 +379,10 @@ func (api *PluginAPI) GetChannelMembersByIds(channelId string, userIds []string)
 	return api.app.GetChannelMembersByIds(channelId, userIds)
 }
 
+func (api *PluginAPI) GetChannelMembersForUser(teamId, userId string, page, perPage int) ([]*model.ChannelMember, *model.AppError) {
+	return api.app.GetChannelMembersForUserWithPagination(teamId, userId, page, perPage)
+}
+
 func (api *PluginAPI) UpdateChannelMemberRoles(channelId, userId, newRoles string) (*model.ChannelMember, *model.AppError) {
 	return api.app.UpdateChannelMemberRoles(channelId, userId, newRoles)
 }

app/plugin_api_test.go

@@ -881,3 +881,30 @@ func TestPluginAPI_SearchTeams(t *testing.T) {
 		assert.Empty(t, teams)
 	})
 }
+
+func TestPluginAPI_GetTeamMembersForUser(t *testing.T) {
+	th := Setup(t).InitBasic()
+	defer th.TearDown()
+	api := th.SetupPluginAPI()
+
+	userId := th.BasicUser.Id
+	teamMembers, err := api.GetTeamMembersForUser(userId, 0, 10)
+	assert.Nil(t, err)
+	assert.Equal(t, len(teamMembers), 1)
+	assert.Equal(t, teamMembers[0].TeamId, th.BasicTeam.Id)
+	assert.Equal(t, teamMembers[0].UserId, th.BasicUser.Id)
+}
+
+func TestPluginAPI_GetChannelMembersForUser(t *testing.T) {
+	th := Setup(t).InitBasic()
+	defer th.TearDown()
+	api := th.SetupPluginAPI()
+
+	userId := th.BasicUser.Id
+	teamId := th.BasicTeam.Id
+	channelMembers, err := api.GetChannelMembersForUser(teamId, userId, 0, 10)
+
+	assert.Nil(t, err)
+	assert.Equal(t, len(channelMembers), 3)
+	assert.Equal(t, channelMembers[0].UserId, th.BasicUser.Id)
+}

app/team.go

@@ -590,6 +590,14 @@ func (a *App) GetTeamMembersForUser(userId string) ([]*model.TeamMember, *model.
 	return result.Data.([]*model.TeamMember), nil
 }
 
+func (a *App) GetTeamMembersForUserWithPagination(userId string, page, perPage int) ([]*model.TeamMember, *model.AppError) {
+	result := <-a.Srv.Store.Team().GetTeamsForUserWithPagination(userId, page, perPage)
+	if result.Err != nil {
+		return nil, result.Err
+	}
+	return result.Data.([]*model.TeamMember), nil
+}
+
 func (a *App) GetTeamMembers(teamId string, offset int, limit int) ([]*model.TeamMember, *model.AppError) {
 	result := <-a.Srv.Store.Team().GetMembers(teamId, offset, limit)
 	if result.Err != nil {