add how many commands have been used to ping command

cmd/nourybot/commands.go

@@ -4,10 +4,12 @@ import (
 	"strings"
 
 	"github.com/lyx0/nourybot-matrix/internal/commands"
+	"github.com/lyx0/nourybot-matrix/internal/common"
 	"maunium.net/go/mautrix/event"
 )
 
 func (app *Application) ParseCommand(evt *event.Event) {
+	common.CommandUsed()
 	// commandName is the actual name of the command without the prefix.
 	// e.g. `!ping` would be `ping`.
 	commandName := strings.ToLower(strings.SplitN(evt.Content.AsMessage().Body, " ", 2)[0][1:])

internal/commands/ping.go

@@ -1,6 +1,13 @@
 package commands
 
+import (
+	"fmt"
+
+	"github.com/lyx0/nourybot-matrix/internal/common"
+)
+
 func Ping() (string, error) {
-	resp := "Pong!"
+	n := common.GetCommandsUsed()
+	resp := fmt.Sprintf("Pong! Commands used: %v", n)
 	return resp, nil
 }

internal/common/counter.go

@@ -0,0 +1,16 @@
+package common
+
+var (
+	tempCommands = 0
+)
+
+// CommandUsed is called on every command incremenenting tempCommands.
+func CommandUsed() {
+	tempCommands++
+}
+
+// GetCommandsUsed returns the amount of commands that have been used
+// since the last restart.
+func GetCommandsUsed() int {
+	return tempCommands
+}