added random number command

internal/pkg/commands/random-number.go

@@ -0,0 +1,43 @@
+package commands
+
+import (
+	"math/rand"
+	"strconv"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+func RandomNumberCommand(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	options := i.ApplicationCommandData().Options
+	if len(options) == 0 {
+		s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+			Type: discordgo.InteractionResponseChannelMessageWithSource,
+			Data: &discordgo.InteractionResponseData{
+				Content: "Please provide a number.",
+			},
+		})
+		return
+	}
+
+	max := options[0].IntValue()
+	if max < 1 {
+		s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+			Type: discordgo.InteractionResponseChannelMessageWithSource,
+			Data: &discordgo.InteractionResponseData{
+				Content: "Invalid number provided.",
+			},
+		})
+		return
+	}
+
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	randomNumber := r.Intn(int(max)) + 1
+
+	s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+		Type: discordgo.InteractionResponseChannelMessageWithSource,
+		Data: &discordgo.InteractionResponseData{
+			Content: "Your random number is " + strconv.Itoa(randomNumber),
+		},
+	})
+}