PLT-6971: Fix Slack Import of non-ascii channel names. (#6969)

app/slackimport.go

@@ -53,6 +53,8 @@ type SlackPost struct {
 	Attachments []*model.SlackAttachment `json:"attachments"`
 }
 
+var isValidChannelNameCharacters = regexp.MustCompile(`^[a-zA-Z0-9\-_]+$`).MatchString
+
 type SlackComment struct {
 	User    string `json:"user"`
 	Comment string `json:"comment"`
@@ -77,13 +79,17 @@ func SlackConvertTimeStamp(ts string) int64 {
 	return timeStamp * 1000 // Convert to milliseconds
 }
 
-func SlackConvertChannelName(channelName string) string {
+func SlackConvertChannelName(channelName string, channelId string) string {
 	newName := strings.Trim(channelName, "_-")
 	if len(newName) == 1 {
 		return "slack-channel-" + newName
 	}
 
+	if isValidChannelNameCharacters(newName) {
 		return newName
+	} else {
+		return strings.ToLower(channelId)
+	}
 }
 
 func SlackParseChannels(data io.Reader) ([]SlackChannel, error) {
@@ -466,7 +472,7 @@ func SlackAddChannels(teamId string, slackchannels []SlackChannel, posts map[str
 			TeamId:      teamId,
 			Type:        model.CHANNEL_OPEN,
 			DisplayName: sChannel.Name,
-			Name:        SlackConvertChannelName(sChannel.Name),
+			Name:        SlackConvertChannelName(sChannel.Name, sChannel.Id),
 			Purpose:     sChannel.Purpose["value"],
 			Header:      sChannel.Topic["value"],
 		}

app/slackimport_test.go

@@ -23,19 +23,21 @@ func TestSlackConvertTimeStamp(t *testing.T) {
 
 func TestSlackConvertChannelName(t *testing.T) {
 	var testData = []struct {
-		input  string
+		nameInput string
+		idInput string
 		output string
 	}{
-		{"test-channel", "test-channel"},
+		{"test-channel", "C0G08DLQH", "test-channel"},
-		{"_test_channel_", "test_channel"},
+		{"_test_channel_", "C0G04DLQH", "test_channel"},
-		{"__test", "test"},
+		{"__test", "C0G07DLQH", "test"},
-		{"-t", "slack-channel-t"},
+		{"-t", "C0G06DLQH", "slack-channel-t"},
-		{"a", "slack-channel-a"},
+		{"a", "C0G05DLQH", "slack-channel-a"},
+		{"случайный", "C0G05DLQD", "c0g05dlqd"},
 	}
 
 	for _, td := range testData {
-		if td.output != SlackConvertChannelName(td.input) {
+		if td.output != SlackConvertChannelName(td.nameInput, td.idInput) {
-			t.Fatalf("Did not convert channel name correctly: %v", td.input)
+			t.Fatalf("Did not convert channel name correctly: %v", td.nameInput)
 		}
 	}
 }