admin: be quiet

This will not silence any out of band messages such as Untappd checks,
Twitch notifications, or the startup message.

This will cause catbase not to know anything about the conversation,
which means quoting something during the quiet period is impossible.
Everything during quiet time is off the record.

plugins/admin/admin.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"log"
 	"strings"
+	"time"
 
 	"github.com/jmoiron/sqlx"
 	"github.com/velour/catbase/bot"
@@ -19,6 +20,8 @@ type AdminPlugin struct {
 	Bot bot.Bot
 	db  *sqlx.DB
 	cfg *config.Config
+
+	quiet bool
 }
 
 // NewAdminPlugin creates a new AdminPlugin with the Plugin interface
@@ -44,6 +47,10 @@ var forbiddenKeys = map[string]bool{
 func (p *AdminPlugin) Message(message msg.Message) bool {
 	body := message.Body
 
+	if p.quiet {
+		return true
+	}
+
 	if len(body) > 0 && body[0] == '$' {
 		return p.handleVariables(message)
 	}
@@ -52,6 +59,21 @@ func (p *AdminPlugin) Message(message msg.Message) bool {
 		return false
 	}
 
+	if strings.ToLower(body) == "shut up" {
+		dur := time.Duration(p.cfg.GetInt("quietDuration", 5)) * time.Minute
+		log.Printf("Going to sleep for %v, %v", dur, time.Now().Add(dur))
+		p.Bot.SendMessage(message.Channel, "Okay. I'll be back later.")
+		p.quiet = true
+		go func() {
+			select {
+			case <-time.After(dur):
+				p.quiet = false
+				log.Println("Waking up from nap.")
+			}
+		}()
+		return true
+	}
+
 	parts := strings.Split(body, " ")
 	if parts[0] == "set" && len(parts) > 2 && forbiddenKeys[parts[1]] {
 		p.Bot.SendMessage(message.Channel, "You cannot access that key")