Use conversations api to join channels (#4)

Author: dispensable

example.config.json

@@ -19,7 +19,7 @@
         "botGravatarMail": "bot+%s@example.com",
         "humanGravatarMail": "%s@example.com",
         "joinChannels": [
-            "#general"
+            {"name": "#general", "id":  "<slack channel id>"}
         ]
     },
     "ldap": {

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/go-redis/redis/v7 v7.4.0
 	github.com/prometheus/alertmanager v0.21.0
 	github.com/sirupsen/logrus v1.6.0
-	github.com/slack-go/slack v0.6.5
+	github.com/slack-go/slack v0.8.1
 	github.com/spf13/cobra v1.0.0
 	github.com/stretchr/testify v1.6.1
 )

go.sum

@@ -507,8 +507,8 @@ github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMB
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
-github.com/slack-go/slack v0.6.5 h1:IkDKtJ2IROJNoe3d6mW870/NRKvq2fhLB/Q5XmzWk00=
-github.com/slack-go/slack v0.6.5/go.mod h1:FGqNzJBmxIsZURAxh2a8D21AnOVvvXZvGligs4npPUM=
+github.com/slack-go/slack v0.8.1 h1:NqGXuzni8Is3EJWmsuMuBiCCPbWOlBgTKPvdlwS3Huk=
+github.com/slack-go/slack v0.8.1/go.mod h1:FGqNzJBmxIsZURAxh2a8D21AnOVvvXZvGligs4npPUM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=

slack/slack.go

@@ -17,6 +17,11 @@ import (
 	"channels/storage"
 )
 
+type Conversation struct {
+	Name string `json:"name"`
+	ID   string `json:"id"`
+}
+
 type Config struct {
 	Name         string
 	Token        string
@@ -26,7 +31,7 @@ type Config struct {
 	BotGravatarMail   string
 	HumanGravatarMail string
 
-	JoinChannels []string
+	JoinChannels []*Conversation
 }
 
 type Client struct {
@@ -35,7 +40,7 @@ type Client struct {
 	store storage.Backend
 	cache storage.CacheBackend
 
-	joinChannels []string
+	joinChannels []*Conversation
 
 	signedSecret string
 
@@ -78,16 +83,16 @@ func (c *Client) Run() {
 	go st.Pulling()
 
 	for _, ch := range c.joinChannels {
-		if !strings.HasPrefix(ch, "#") {
+		if !strings.HasPrefix(ch.Name, "#") {
 			continue
 		}
-		_, err := c.api.JoinChannel(ch)
+		_, warnings, _, err := c.api.JoinConversation(ch.ID)
 
 		if err != nil {
-			logrus.Warnf("join channel %s failed: %v", ch, err)
+			logrus.Warnf("join channel %s failed: %v, warning: %v", ch, err, warnings)
 			continue
 		}
-		channel := st.NewChannel(ch)
+		channel := st.NewChannel(ch.Name)
 		channel.SetSendFn(func(msg *storage.Message) {
 			// ignore message from self
 			if msg.Source == storage.MessageSourceSlack {