discord-mudlet-map/dist/message-create.js

This little library helps with Discord bot configuration to provide small Mudlet map fragment images with given location.

import { PngBytesExporter } from "mudlet-map-renderer";
const defaultMessageCreator = (key, area) => `${key} - ${area.areaName}`;
export default function mapCommand(config) {
    return async (message) => {
        const channel = message.channel;
        if (!("send" in channel))
            return;
        for (const key of Object.keys(config)) {
            const element = config[key];
            element.renderArea = element.renderArea ?? false;
            const reader = element.reader;
            if (!reader)
                continue;
            const extracted = element.locationExtractor(message.content, reader);
            if (!extracted)
                continue;
            const textOnly = !element.provider && !element.mapRenderer;
            if (!element.mapRenderer && !textOnly) {
                await channel.send(`${key} - map not ready`);
                continue;
            }
            const roomId = Number(extracted);
            let room;
            let area;
            try {
                room = reader.getRoom(roomId);
                area = reader.getArea(room.area);
            }
            catch {
                await channel.send(`${key} - no location ID`);
                continue;
            }
            if (!room || !area) {
                await channel.send(`${key} - no location ID`);
                continue;
            }
            const areaInfo = {
                areaName: area.getAreaName(),
                areaId: area.getAreaId(),
            };
            const content = (element.messageCreator ?? defaultMessageCreator)(key, areaInfo, room);
            if (textOnly) {
                try {
                    await channel.send({ content });
                }
                catch (err) {
                    console.log(err);
                }
                continue;
            }
            try {
                const renderer = element.mapRenderer;
                renderer.drawArea(room.area, room.z);
                const bytes = renderer.export(new PngBytesExporter({
                    width: 1200,
                    height: 1200,
                    roomId: element.renderArea ? undefined : roomId,
                    padding: element.renderArea ? 3 : 10,
                    overlays: { position: { roomId } },
                }));
                if (!bytes) {
                    console.log(`${key} - PNG export returned empty buffer`);
                    continue;
                }
                await channel.send({
                    content,
                    files: [
                        {
                            attachment: Buffer.from(bytes),
                            name: `${key} - ${roomId}.png`,
                        },
                    ],
                });
            }
            catch (err) {
                console.log(err);
            }
        }
    };
}
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