conversation: support passing team id in CreateConversation

This is a breaking change that hopefully future proofs this codepath
from future breaking changes, since adding additional params to the
struct should be backwards compatible.

conversation.go

@@ -337,17 +337,26 @@ func (api *Client) CloseConversationContext(ctx context.Context, channelID strin
 	return response.NoOp, response.AlreadyClosed, response.Err()
 }
 
+type CreateConversationParams struct {
+	ChannelName string
+	IsPrivate   bool
+	TeamID      string
+}
+
 // CreateConversation initiates a public or private channel-based conversation
-func (api *Client) CreateConversation(channelName string, isPrivate bool) (*Channel, error) {
-	return api.CreateConversationContext(context.Background(), channelName, isPrivate)
+func (api *Client) CreateConversation(params CreateConversationParams) (*Channel, error) {
+	return api.CreateConversationContext(context.Background(), params)
 }
 
 // CreateConversationContext initiates a public or private channel-based conversation with a custom context
-func (api *Client) CreateConversationContext(ctx context.Context, channelName string, isPrivate bool) (*Channel, error) {
+func (api *Client) CreateConversationContext(ctx context.Context, params CreateConversationParams) (*Channel, error) {
 	values := url.Values{
 		"token":      {api.token},
-		"name":       {channelName},
-		"is_private": {strconv.FormatBool(isPrivate)},
+		"name":       {params.ChannelName},
+		"is_private": {strconv.FormatBool(params.IsPrivate)},
+	}
+	if params.TeamID != "" {
+		values.Set("team_id", params.TeamID)
 	}
 	response, err := api.channelRequest(ctx, "conversations.create", values)
 	if err != nil {

conversation_test.go

@@ -385,7 +385,7 @@ func TestCreateConversation(t *testing.T) {
 	http.HandleFunc("/conversations.create", okChannelJsonHandler)
 	once.Do(startServer)
 	api := New("testing-token", OptionAPIURL("http://"+serverAddr+"/"))
-	channel, err := api.CreateConversation("CXXXXXXXX", false)
+	channel, err := api.CreateConversation(CreateConversationParams{ChannelName: "CXXXXXXXX"})
 	if err != nil {
 		t.Errorf("Unexpected error: %s", err)
 		return

examples/pins/pins.go

@@ -43,7 +43,7 @@ func main() {
 	postAsUserID = authTest.UserID
 
 	// Create a temporary channel
-	channel, err := api.CreateConversation(channelName, false)
+	channel, err := api.CreateConversation(slack.CreateConversationParams{ChannelName: channelName})
 
 	if err != nil {
 		// If the channel exists, that means we just need to unarchive it

slacktest/handlers_test.go

@@ -37,7 +37,7 @@ func TestServerCreateConversationHandler(t *testing.T) {
 	go s.Start()
 
 	client := slack.New("ABCDEFG", slack.OptionAPIURL(s.GetAPIURL()))
-	conversation, err := client.CreateConversation("test", false)
+	conversation, err := client.CreateConversation(slack.CreateConversationParams{ChannelName: "test"})
 	assert.NoError(t, err)
 	assert.Equal(t, "C0EAQDV4Z", conversation.ID)
 	assert.Equal(t, "U023BECGF", conversation.Creator)