Yup. Leftpad.

main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/velour/catbase/plugins/dice"
 	"github.com/velour/catbase/plugins/downtime"
 	"github.com/velour/catbase/plugins/fact"
+	"github.com/velour/catbase/plugins/leftpad"
 	"github.com/velour/catbase/plugins/talker"
 	"github.com/velour/catbase/plugins/your"
 	"github.com/velour/catbase/slack"
@@ -43,6 +44,7 @@ func main() {
 	// b.AddHandler(plugins.NewTestPlugin(b))
 	b.AddHandler("admin", admin.NewAdminPlugin(b))
 	// b.AddHandler("first", plugins.NewFirstPlugin(b))
+	b.AddHandler("leftpad", leftpad.New(b))
 	b.AddHandler("downtime", downtime.NewDowntimePlugin(b))
 	b.AddHandler("talker", talker.NewTalkerPlugin(b))
 	b.AddHandler("dice", dice.NewDicePlugin(b))

plugins/leftpad/leftpad.go

@@ -0,0 +1,92 @@
+// © 2016 the CatBase Authors under the WTFPL license. See AUTHORS for the list of authors.
+
+// Leftpad contains the plugin that allows the bot to pad messages
+package leftpad
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"strings"
+
+	"github.com/velour/catbase/bot"
+)
+
+type LeftpadPlugin struct {
+	bot *bot.Bot
+}
+
+// New creates a new LeftpadPlugin with the Plugin interface
+func New(bot *bot.Bot) *LeftpadPlugin {
+	p := LeftpadPlugin{
+		bot: bot,
+	}
+	return &p
+}
+
+type leftpadResp struct {
+	Str string
+}
+
+func (p *LeftpadPlugin) Message(message bot.Message) bool {
+	if !message.Command {
+		return false
+	}
+
+	parts := strings.Split(message.Body, " ")
+	if len(parts) > 3 && parts[0] == "leftpad" {
+		padchar := parts[1]
+		length := parts[2]
+		text := parts[3:][0]
+		url := fmt.Sprintf("https://api.left-pad.io/?str=%s&len=%s&ch=%s",
+			text,
+			length,
+			padchar,
+		)
+		log.Printf("Requesting leftpad url: %s", url)
+		resp, err := http.Get(url)
+		if err != nil {
+			p.bot.SendMessage(message.Channel, err.Error())
+			return true
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			p.bot.SendMessage(message.Channel, "I can't leftpad right now :(")
+			log.Printf("Error decoding leftpad: %s", err)
+			return true
+		}
+		r := leftpadResp{}
+		err = json.Unmarshal(body, &r)
+		if err != nil {
+			p.bot.SendMessage(message.Channel, "I can't leftpad right now :(")
+			log.Printf("Error decoding leftpad: %s", err)
+			return true
+		}
+		p.bot.SendMessage(message.Channel, r.Str)
+		return true
+	}
+
+	return false
+}
+
+func (p *LeftpadPlugin) Event(e string, message bot.Message) bool {
+	return false
+}
+
+func (p *LeftpadPlugin) BotMessage(message bot.Message) bool {
+	return false
+}
+
+func (p *LeftpadPlugin) LoadData() {
+}
+
+func (p *LeftpadPlugin) Help(e string, m []string) {
+}
+
+func (p *LeftpadPlugin) RegisterWeb() *string {
+	// nothing to register
+	return nil
+}