emojify: configurize the chance

config/config.go

@@ -89,6 +89,9 @@ type Config struct {
 		DBPath    string
 		Sightings []string
 	}
+	Emojify struct {
+		Chance float64
+	}
 }
 
 func init() {

example_config.json

@@ -71,5 +71,8 @@
 	"Stats": {
 		"DBPath": "stats.db",
 		"Sightings": ["user"]
+	},
+	"Emojify": {
+		"Chance": 0.02
 	}
 }

plugins/emojifyme/emojifyme.go

@@ -67,7 +67,7 @@ func (p *EmojifyMePlugin) Message(message msg.Message) bool {
 		}
 	}
 
-	if rand.Intn(10) == 0 {
+	if rand.Float64() <= p.Bot.Config().Emojify.Chance {
 		tokens := strings.Fields(strings.ToLower(message.Body))
 		sendMessage := false
 		for i, token := range tokens {