rename listener to event

cmd/welcomebot/event/listener.go

@@ -0,0 +1,155 @@
+package event
+
+import (
+	"fmt"
+	"github.com/disgoorg/disgo/discord"
+	"github.com/disgoorg/disgo/events"
+	"grow.rievo.dev/discordBots/cmd/welcomebot/config"
+	"time"
+)
+
+func JoinEvent(event *events.GuildMemberJoin) {
+	// on join send message in welcome
+	user := event.Member.User
+	if event.GuildID.String() != config.RegisterGuildID.String() {
+		event.Client().Logger().Error("join from an other guild")
+		return
+	}
+	guild, err := event.Client().Rest().GetGuild(config.RegisterGuildID, false)
+	if err != nil {
+		event.Client().Logger().Error("could not find guild: ", err)
+		return
+	}
+
+	_, err = event.Client().Rest().CreateMessage(config.ChannelWelcomeID,
+		discord.NewMessageCreateBuilder().
+			SetContent(user.Mention()).
+			SetEphemeral(false).
+			AddActionRow(discord.NewSecondaryButton("approve", "approve")).
+			SetEmbeds(discord.NewEmbedBuilder().
+				SetColor(16068661).
+				SetTimestamp(time.Now()).
+				SetThumbnail(user.EffectiveAvatarURL(discord.WithSize(1024))).
+				AddField(
+					fmt.Sprintf("Welcome to the %v Server", guild.Name),
+					fmt.Sprintf("Welcome %v (`%v`) on %v 🍎", user.Mention(), user.Username, guild.Name), false).
+				AddField("Next Step", fmt.Sprintf("schau dir die %v und spaeter die %v an", config.ChannelRulesMention, config.ChannelInfoMention), false).
+				Build()).
+			Build(),
+	)
+	if err != nil {
+		event.Client().Logger().Error("on sending join message: ", err)
+		return
+	}
+}
+
+func LeaveEvent(event *events.GuildMemberLeave) {
+	user := event.User
+
+	if event.GuildID.String() != config.RegisterGuildID.String() {
+		event.Client().Logger().Error("leave from an other guild")
+		return
+	}
+	guild, err := event.Client().Rest().GetGuild(config.RegisterGuildID, false)
+	if err != nil {
+		event.Client().Logger().Error("could not find guild: ", err)
+		return
+	}
+
+	_, err = event.Client().Rest().CreateMessage(config.ChannelWelcomeID,
+		discord.NewMessageCreateBuilder().
+			SetContent(
+				fmt.Sprintf("%v (`%v`) left %v", user.Mention(), user.Username, guild.Name)).
+			Build(),
+	)
+	if err != nil {
+		event.Client().Logger().Error("on sending leave message: ", err)
+		return
+	}
+}
+
+func ReactionEvent(event *events.ComponentInteractionCreate) {
+
+	if event.ChannelID() != config.ChannelWelcomeID {
+		// reaction is not in welcome chat
+		return
+	}
+
+	approverID := event.User().ID
+	if approverID.String() == event.Client().ID().String() {
+		// reaction user is bot itself
+		return
+	}
+	if event.ButtonInteractionData().CustomID() != "approve" {
+		// not approve button
+		return
+	}
+	approver, err := event.Client().Rest().GetMember(config.RegisterGuildID, approverID)
+	if err != nil {
+		event.Client().Logger().Error("could not find user: ", err)
+		return
+	}
+	hasPermission := func() bool {
+		for _, roleID := range approver.RoleIDs {
+			if roleID.String() == config.RoleAppleCoreID.String() {
+				return true
+			}
+		}
+		return false
+	}()
+
+	if hasPermission == false {
+		err = event.CreateMessage(discord.NewMessageCreateBuilder().
+			SetEphemeral(true).
+			SetContent("you don't have permissions to do this").
+			Build())
+		if err != nil {
+			event.Client().Logger().Error("could not respond to reaction: ", err)
+			return
+		}
+		return
+	}
+
+	messageID := event.Message.ID
+	message, err := event.Client().Rest().GetMessage(config.ChannelWelcomeID, messageID)
+	if err != nil {
+		event.Client().Logger().Error("could not find message: ", err)
+		return
+	}
+	if len(message.Mentions) != 1 {
+		// there should be only one mention in the message
+		return
+	}
+	user := message.Mentions[0]
+
+	// add role to user (bot role needs to be above roleAppleID)
+	err = event.Client().Rest().AddMemberRole(config.RegisterGuildID, user.ID, config.RoleAppleID)
+	if err != nil {
+		event.Client().Logger().Error("not able to add role: ", err)
+		return
+	}
+
+	// update embed (and time)
+	if len(message.Embeds) != 1 {
+		// there should be only one embed in the message
+		return
+	}
+	embed := message.Embeds[0]
+	updatedMessage := discord.NewEmbedBuilder().
+		SetColor(16068661).
+		SetTimestamp(time.Now()).
+		SetThumbnail(embed.Thumbnail.URL).
+		AddFields(embed.Fields...).
+		AddField("Approval", fmt.Sprintf("%v approved by %v (`%v`)", user.Mention(), approver.Mention(), approver.User.Username), false).
+		Build()
+
+	err = event.UpdateMessage(discord.NewMessageUpdateBuilder().
+		SetContent(message.Content).
+		SetEmbeds(updatedMessage).
+		ClearContainerComponents().
+		Build())
+	if err != nil {
+		event.Client().Logger().Error("could not update message: ", err)
+		return
+	}
+}