Add Slack support

vendor/github.com/nlopes/slack/im.go

@@ -0,0 +1,130 @@
+package slack
+
+import (
+	"errors"
+	"net/url"
+	"strconv"
+)
+
+type imChannel struct {
+	ID string `json:"id"`
+}
+
+type imResponseFull struct {
+	NoOp          bool      `json:"no_op"`
+	AlreadyClosed bool      `json:"already_closed"`
+	AlreadyOpen   bool      `json:"already_open"`
+	Channel       imChannel `json:"channel"`
+	IMs           []IM      `json:"ims"`
+	History
+	SlackResponse
+}
+
+// IM contains information related to the Direct Message channel
+type IM struct {
+	conversation
+	IsIM          bool   `json:"is_im"`
+	User          string `json:"user"`
+	IsUserDeleted bool   `json:"is_user_deleted"`
+}
+
+func imRequest(path string, values url.Values, debug bool) (*imResponseFull, error) {
+	response := &imResponseFull{}
+	err := post(path, values, response, debug)
+	if err != nil {
+		return nil, err
+	}
+	if !response.Ok {
+		return nil, errors.New(response.Error)
+	}
+	return response, nil
+}
+
+// CloseIMChannel closes the direct message channel
+func (api *Client) CloseIMChannel(channel string) (bool, bool, error) {
+	values := url.Values{
+		"token":   {api.config.token},
+		"channel": {channel},
+	}
+	response, err := imRequest("im.close", values, api.debug)
+	if err != nil {
+		return false, false, err
+	}
+	return response.NoOp, response.AlreadyClosed, nil
+}
+
+// OpenIMChannel opens a direct message channel to the user provided as argument
+// Returns some status and the channel ID
+func (api *Client) OpenIMChannel(user string) (bool, bool, string, error) {
+	values := url.Values{
+		"token": {api.config.token},
+		"user":  {user},
+	}
+	response, err := imRequest("im.open", values, api.debug)
+	if err != nil {
+		return false, false, "", err
+	}
+	return response.NoOp, response.AlreadyOpen, response.Channel.ID, nil
+}
+
+// MarkIMChannel sets the read mark of a direct message channel to a specific point
+func (api *Client) MarkIMChannel(channel, ts string) (err error) {
+	values := url.Values{
+		"token":   {api.config.token},
+		"channel": {channel},
+		"ts":      {ts},
+	}
+	_, err = imRequest("im.mark", values, api.debug)
+	if err != nil {
+		return err
+	}
+	return
+}
+
+// GetIMHistory retrieves the direct message channel history
+func (api *Client) GetIMHistory(channel string, params HistoryParameters) (*History, error) {
+	values := url.Values{
+		"token":   {api.config.token},
+		"channel": {channel},
+	}
+	if params.Latest != DEFAULT_HISTORY_LATEST {
+		values.Add("latest", params.Latest)
+	}
+	if params.Oldest != DEFAULT_HISTORY_OLDEST {
+		values.Add("oldest", params.Oldest)
+	}
+	if params.Count != DEFAULT_HISTORY_COUNT {
+		values.Add("count", strconv.Itoa(params.Count))
+	}
+	if params.Inclusive != DEFAULT_HISTORY_INCLUSIVE {
+		if params.Inclusive {
+			values.Add("inclusive", "1")
+		} else {
+			values.Add("inclusive", "0")
+		}
+	}
+	if params.Unreads != DEFAULT_HISTORY_UNREADS {
+		if params.Unreads {
+			values.Add("unreads", "1")
+		} else {
+			values.Add("unreads", "0")
+		}
+	}
+	response, err := imRequest("im.history", values, api.debug)
+	if err != nil {
+		return nil, err
+	}
+	return &response.History, nil
+}
+
+// GetIMChannels returns the list of direct message channels
+func (api *Client) GetIMChannels() ([]IM, error) {
+	values := url.Values{
+		"token": {api.config.token},
+	}
+	response, err := imRequest("im.list", values, api.debug)
+	if err != nil {
+		return nil, err
+	}
+	return response.IMs, nil
+}