PLT-3131 Add slash command for sending email invites (#3218)

* Add slash command for sending email invites

* Add response for empty message and trim commas

* Check for @ in email addresses before sending

* Update invite people error message

api/command_invite_people.go

@@ -0,0 +1,78 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api
+
+import (
+	"strings"
+
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+)
+
+type InvitePeopleProvider struct {
+}
+
+const (
+	CMD_INVITE_PEOPLE = "invite_people"
+)
+
+func init() {
+	RegisterCommandProvider(&InvitePeopleProvider{})
+}
+
+func (me *InvitePeopleProvider) GetTrigger() string {
+	return CMD_INVITE_PEOPLE
+}
+
+func (me *InvitePeopleProvider) GetCommand(c *Context) *model.Command {
+	return &model.Command{
+		Trigger:          CMD_INVITE_PEOPLE,
+		AutoComplete:     true,
+		AutoCompleteDesc: c.T("api.command.invite_people.desc"),
+		AutoCompleteHint: c.T("api.command.invite_people.hint"),
+		DisplayName:      c.T("api.command.invite_people.name"),
+	}
+}
+
+func (me *InvitePeopleProvider) DoCommand(c *Context, channelId string, message string) *model.CommandResponse {
+	if !utils.Cfg.EmailSettings.SendEmailNotifications {
+		return &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: c.T("api.command.invite_people.email_off")}
+	}
+
+	tchan := Srv.Store.Team().Get(c.TeamId)
+	uchan := Srv.Store.User().Get(c.Session.UserId)
+
+	emailList := strings.Fields(message)
+
+	for i := len(emailList) - 1; i >= 0; i-- {
+		emailList[i] = strings.Trim(emailList[i], ",")
+		if !strings.Contains(emailList[i], "@") {
+			emailList = append(emailList[:i], emailList[i+1:]...)
+		}
+	}
+
+	if len(emailList) == 0 {
+		return &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: c.T("api.command.invite_people.no_email")}
+	}
+
+	var team *model.Team
+	if result := <-tchan; result.Err != nil {
+		c.Err = result.Err
+		return &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: c.T("api.command.invite_people.fail")}
+	} else {
+		team = result.Data.(*model.Team)
+	}
+
+	var user *model.User
+	if result := <-uchan; result.Err != nil {
+		c.Err = result.Err
+		return &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: c.T("api.command.invite_people.fail")}
+	} else {
+		user = result.Data.(*model.User)
+	}
+
+	go InviteMembers(c, team, user, emailList)
+
+	return &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: c.T("api.command.invite_people.sent")}
+}