hmn/src/discord/library.go

package discord

import (
	"context"

	"git.handmade.network/hmn/hmn/src/config"
	"git.handmade.network/hmn/hmn/src/db"
	"git.handmade.network/hmn/hmn/src/oops"
)

func maybeDeleteLibraryMsg(
	ctx context.Context,
	dbConn db.ConnOrTx,
	msg *Message,
) (didDelete bool, err error) {
	// Ensure basic info about the message
	if msg.ChannelID != config.Config.Discord.LibraryChannelID {
		return false, nil
	}
	switch msg.Type {
	case MessageTypeDefault, MessageTypeReply, MessageTypeApplicationCommand:
	default:
		return false, nil
	}
	if !msg.OriginalHasFields("content") {
		return false, nil
	}

	// Maybe delete it if it's bad
	didDelete = false
	if !messageHasLinks(msg.Content) {
		err := DeleteMessage(ctx, msg.ChannelID, msg.ID)
		if err != nil {
			return false, oops.New(err, "failed to delete message")
		}
		didDelete = true

		if !msg.Author.IsBot {
			channel, err := CreateDM(ctx, msg.Author.ID)
			if err != nil {
				return false, oops.New(err, "failed to create DM channel")
			}

			err = SendMessages(ctx, dbConn, MessageToSend{
				ChannelID: channel.ID,
				Req: CreateMessageRequest{
					Content: "Posts in #the-library are required to have a link. Discuss library content in other relevant channels.",
				},
			})
			if err != nil {
				return false, oops.New(err, "failed to send showcase warning message")
			}
		}
	}

	return didDelete, nil
}