From 9e03fcf1625aa7072ea5177b8a5d318b6f2995cd Mon Sep 17 00:00:00 2001
From: Wim <wim@42.be>
Date: Wed, 30 Aug 2017 14:01:17 +0200
Subject: [PATCH] Fix private channel joining bug (mattermost). Closes #248

---
 bridge/mattermost/mattermost.go |  7 ++++++-
 matterclient/matterclient.go    | 12 +++++++++---
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/bridge/mattermost/mattermost.go b/bridge/mattermost/mattermost.go
index 6bc1ebb7..fc4fdb96 100644
--- a/bridge/mattermost/mattermost.go
+++ b/bridge/mattermost/mattermost.go
@@ -2,6 +2,7 @@ package bmattermost
 
 import (
 	"errors"
+	"fmt"
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/matterclient"
 	"github.com/42wim/matterbridge/matterhook"
@@ -132,7 +133,11 @@ func (b *Bmattermost) Disconnect() error {
 func (b *Bmattermost) JoinChannel(channel config.ChannelInfo) error {
 	// we can only join channels using the API
 	if b.Config.WebhookURL == "" && b.Config.WebhookBindAddress == "" {
-		return b.mc.JoinChannel(b.mc.GetChannelId(channel.Name, ""))
+		id := b.mc.GetChannelId(channel.Name, "")
+		if id == "" {
+			return fmt.Errorf("Could not find channel ID for channel %s", channel.Name)
+		}
+		return b.mc.JoinChannel(id)
 	}
 	return nil
 }
diff --git a/matterclient/matterclient.go b/matterclient/matterclient.go
index f6b942aa..d52a428d 100644
--- a/matterclient/matterclient.go
+++ b/matterclient/matterclient.go
@@ -481,7 +481,7 @@ func (m *MMClient) JoinChannel(channelId string) error {
 	m.log.Debug("Joining ", channelId)
 	_, resp := m.Client.AddChannelMember(channelId, m.User.Id)
 	if resp.Error != nil {
-		return errors.New("failed to join")
+		return resp.Error
 	}
 	return nil
 }
@@ -812,13 +812,19 @@ func (m *MMClient) initUser() error {
 		for _, user := range mmusers {
 			usermap[user.Id] = user
 		}
+
 		t := &Team{Team: team, Users: usermap, Id: team.Id}
 
-		mmchannels, resp := m.Client.GetPublicChannelsForTeam(team.Id, 0, 5000, "")
+		mmchannels, resp := m.Client.GetChannelsForTeamForUser(team.Id, m.User.Id, "")
 		if resp.Error != nil {
-			return errors.New(resp.Error.DetailedError)
+			return resp.Error
 		}
 		t.Channels = mmchannels
+		mmchannels, resp = m.Client.GetPublicChannelsForTeam(team.Id, 0, 5000, "")
+		if resp.Error != nil {
+			return resp.Error
+		}
+		t.MoreChannels = mmchannels
 		m.OtherTeams = append(m.OtherTeams, t)
 		if team.Name == m.Credentials.Team {
 			m.Team = t