PLT-4938 Add app package and move logic over from api package (#4931)

* Add app package and move logic over from api package

* Change app package functions to return errors

* Move non-api tests into app package

* Fix merge

app/team.go

@@ -0,0 +1,82 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	l4g "github.com/alecthomas/log4go"
+
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+)
+
+func CreateTeam(team *model.Team) (*model.Team, *model.AppError) {
+	if result := <-Srv.Store.Team().Save(team); result.Err != nil {
+		return nil, result.Err
+	} else {
+		rteam := result.Data.(*model.Team)
+
+		if _, err := CreateDefaultChannels(rteam.Id); err != nil {
+			return nil, err
+		}
+
+		return rteam, nil
+	}
+}
+
+func JoinUserToTeamById(teamId string, user *model.User) *model.AppError {
+	if result := <-Srv.Store.Team().Get(teamId); result.Err != nil {
+		return result.Err
+	} else {
+		return JoinUserToTeam(result.Data.(*model.Team), user)
+	}
+}
+
+func JoinUserToTeam(team *model.Team, user *model.User) *model.AppError {
+
+	tm := &model.TeamMember{
+		TeamId: team.Id,
+		UserId: user.Id,
+		Roles:  model.ROLE_TEAM_USER.Id,
+	}
+
+	channelRole := model.ROLE_CHANNEL_USER.Id
+
+	if team.Email == user.Email {
+		tm.Roles = model.ROLE_TEAM_USER.Id + " " + model.ROLE_TEAM_ADMIN.Id
+		channelRole = model.ROLE_CHANNEL_USER.Id + " " + model.ROLE_CHANNEL_ADMIN.Id
+	}
+
+	if etmr := <-Srv.Store.Team().GetMember(team.Id, user.Id); etmr.Err == nil {
+		// Membership alredy exists.  Check if deleted and and update, otherwise do nothing
+		rtm := etmr.Data.(model.TeamMember)
+
+		// Do nothing if already added
+		if rtm.DeleteAt == 0 {
+			return nil
+		}
+
+		if tmr := <-Srv.Store.Team().UpdateMember(tm); tmr.Err != nil {
+			return tmr.Err
+		}
+	} else {
+		// Membership appears to be missing.  Lets try to add.
+		if tmr := <-Srv.Store.Team().SaveMember(tm); tmr.Err != nil {
+			return tmr.Err
+		}
+	}
+
+	if uua := <-Srv.Store.User().UpdateUpdateAt(user.Id); uua.Err != nil {
+		return uua.Err
+	}
+
+	// Soft error if there is an issue joining the default channels
+	if err := JoinDefaultChannels(team.Id, user, channelRole); err != nil {
+		l4g.Error(utils.T("api.user.create_user.joining.error"), user.Id, team.Id, err)
+	}
+
+	RemoveAllSessionsForUserId(user.Id)
+	InvalidateCacheForUser(user.Id)
+
+	return nil
+}