Add SendMessage and SendMessageToChannel, and the necessary types to go with them

chat.go

@@ -6,6 +6,7 @@ import (
 	"encoding/binary"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"os/exec"
 	"strings"
 	"time"
@@ -167,6 +168,45 @@ func chatAPIOut(k *Keybase, c ChatAPI) (ChatAPI, error) {
 	return r, nil
 }
 
+// SendMessage sends a chat message
+func (k *Keybase) SendMessage(options SendMessageOptions) (SendResponse, error) {
+	var r SendResponse
+
+	arg := newSendMessageArg(options)
+	jsonBytes, _ := json.Marshal(arg)
+
+	cmdOut, err := k.Exec("chat", "api", "-m", string(jsonBytes))
+	if err != nil {
+		return r, err
+	}
+
+	err = json.Unmarshal(cmdOut, &r)
+	if err != nil {
+		return r, err
+	}
+
+	return r, nil
+}
+
+// SendMessageToChannel sends a chat message to a channel
+func (k *Keybase) SendMessageToChannel(channel chat1.ChatChannel, message string, a ...interface{}) (SendResponse, error) {
+	var r SendResponse
+
+	opts := SendMessageOptions{
+		Channel: channel,
+		Message: SendMessageBody{
+			Body: fmt.Sprintf(message, a...),
+		},
+	}
+
+	r, err := k.SendMessage(opts)
+	if err != nil {
+		return r, err
+	}
+
+	return r, nil
+}
+
 // Send sends a chat message
 func (c Chat) Send(message ...string) (ChatAPI, error) {
 	m := ChatAPI{

types.go

@@ -21,6 +21,52 @@ type RunOptions struct {
 	FilterChannels []chat1.ChatChannel // Only subscribe to messages from specified channels
 }
 
+// Error holds an error message returned by the API
+type Error struct {
+	Code    int    `json:"code"`
+	Message string `json:"message"`
+}
+
+type SendMessageBody struct {
+	Body string
+}
+
+// SendMessageOptions holds a set of options to be passed to SendMessage
+type SendMessageOptions struct {
+	Channel          chat1.ChatChannel `json:"channel,omitempty"`
+	ConversationID   chat1.ConvIDStr   `json:"conversation_id,omitempty"`
+	Message          SendMessageBody   `json:",omitempty"`
+	Filename         string            `json:"filename,omitempty"`
+	Title            string            `json:"title,omitempty"`
+	MessageID        chat1.MessageID   `json:"message_id,omitempty"`
+	ConfirmLumenSend bool              `json:"confirm_lumen_send"`
+	ReplyTo          *chat1.MessageID  `json:"reply_to,omitempty"`
+}
+
+type sendMessageParams struct {
+	Options SendMessageOptions
+}
+
+type sendMessageArg struct {
+	Method string
+	Params sendMessageParams
+}
+
+func newSendMessageArg(options SendMessageOptions) sendMessageArg {
+	return sendMessageArg{
+		Method: "send",
+		Params: sendMessageParams{
+			Options: options,
+		},
+	}
+}
+
+// SendResponse holds the data returned by the send method in the API
+type SendResponse struct {
+	Result chat1.SendRes `json:"result"`
+	Error  *Error        `json:"error,omitempty"`
+}
+
 // ChatAPI holds information about a message received by the `keybase chat api-listen` command
 type ChatAPI struct {
 	Type         string           `json:"type,omitempty"`
@@ -595,11 +641,6 @@ type tParams struct {
 	Options tOptions `json:"options"`
 }
 
-type Error struct {
-	Code    int    `json:"code"`
-	Message string `json:"message"`
-}
-
 type tResult struct {
 	ChatSent               bool                   `json:"chatSent"`
 	CreatorAdded           bool                   `json:"creatorAdded"`