add interactive button to cancel last minute

cmd/themis-server/main.go

@@ -188,6 +188,12 @@ func main() {
 			Description: "Get the schedule for the following weeks.",
 			Type:        discordgo.ChatApplicationCommand,
 		},
+		{
+			Name:                     "send-schedule",
+			Description:              "Trigger the scheduled message. Admins only",
+			Type:                     discordgo.ChatApplicationCommand,
+			DefaultMemberPermissions: new(int64), // default 0 == admins only
+		},
 		{
 			Name:        "absent",
 			Description: "Mark yourself as absent for a session",
@@ -561,6 +567,18 @@ func main() {
 				log.Error().Err(err).Msg("failed to respond to interaction")
 			}
 		},
+		"send-schedule": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+			notifier.Send()
+
+			if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Content: "Done.",
+				},
+			}); err != nil {
+				log.Error().Err(err).Msg("failed to respond to interaction")
+			}
+		},
 		"absent": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
 			var rawDate string
 			if len(i.ApplicationCommandData().Options) == 0 {
@@ -661,13 +679,28 @@ func main() {
 		}
 
 		var msg string
+		var components []discordgo.MessageComponent
 		if len(absentees) == 0 {
 			msg = "Everybody can make it next Monday, see you then!"
+			components = []discordgo.MessageComponent{
+				discordgo.ActionsRow{
+					Components: []discordgo.MessageComponent{
+						discordgo.Button{
+							CustomID: "schedule-response",
+							Label:    "I Can't Make It",
+							Style:    discordgo.DangerButton,
+						},
+					},
+				},
+			}
 		} else {
 			msg = fmt.Sprintf("%s can't make it next Monday. :sad:", themis.FormatStringSlice(absentees))
 		}
 
-		_, err = discord.ChannelMessageSend(channelId, msg)
+		_, err = discord.ChannelMessageSendComplex(channelId, &discordgo.MessageSend{
+			Content:    msg,
+			Components: components,
+		})
 		if err != nil {
 			log.Error().Err(err).Msg("failed to send scheduled notification")
 		}
@@ -743,6 +776,32 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 				}
 				return
 			}
+		case discordgo.InteractionMessageComponent:
+			switch i.MessageComponentData().CustomID {
+			case "schedule-response":
+				userId := i.Member.User.ID
+				if err := store.AddAbsence(context.TODO(), themis.NextMonday(), userId); err != nil {
+					if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+						Type: discordgo.InteractionResponseChannelMessageWithSource,
+						Data: &discordgo.InteractionResponseData{
+							Content: "something went wrong recording your absence, check logs for more info.",
+						},
+					}); err != nil {
+						log.Error().Err(err).Msg("failed to respond to interaction")
+					}
+					return
+				}
+
+				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+					Type: discordgo.InteractionResponseChannelMessageWithSource,
+					Data: &discordgo.InteractionResponseData{
+						Content: fmt.Sprintf("Looks like <@%s> can't make it after all.", userId),
+					},
+				})
+				if err != nil {
+					log.Error().Err(err).Msg("failed to respond to interaction")
+				}
+			}
 		}
 	})
 }

fly.toml

@@ -26,15 +26,6 @@ DISCORD_BOT_CHANNEL_ID = "1018997240968265768"
     soft_limit = 20
     type = "connections"
 
-  [[services.ports]]
-    force_https = true
-    handlers = ["http"]
-    port = 80
-
-  [[services.ports]]
-    handlers = ["tls", "http"]
-    port = 443
-
   [[services.tcp_checks]]
     grace_period = "1s"
     interval = "15s"

notify.go

@@ -63,6 +63,11 @@ func (n *Notifier) Start(ctx context.Context) {
 	}
 }
 
+// Trigger the notifier manually. Should be used for testing purposes only.
+func (n *Notifier) Send() {
+	n.c <- struct{}{}
+}
+
 func (n *Notifier) NotifyFunc(ctx context.Context, f func()) {
 	for {
 		select {