101 lines
3 KiB
TypeScript
101 lines
3 KiB
TypeScript
import {
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ActionRowBuilder,
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ButtonBuilder,
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ButtonStyle,
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Colors,
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EmbedBuilder,
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type Message,
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ThreadChannel,
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} from 'discord.js';
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function findFirstImage(message: Message): string | undefined {
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const result = message.attachments.find((attach) => {
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return attach.contentType?.startsWith('image/');
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});
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if (result == undefined) {
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return undefined;
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} else {
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return result.url;
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}
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}
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export async function expandDiscordLink(message: Message): Promise<void> {
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if (message.author.bot && !message.author.webhookId) return;
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const re =
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/(https?:\/\/)?(?:canary\.|ptb\.)?discord(?:app)?\.com\/channels\/(?<server_id>\d+)\/(?<channel_id>\d+)\/(?<message_id>\d+)/g;
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const results = message.content.matchAll(re);
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let n = 0;
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for (const r of results) {
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if (n >= 3) break; // only process three previews
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if (r.groups == undefined || r.groups.server_id != message.guildId)
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continue; // do not let the bot leak messages from one server to another
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const channel = await message.guild?.channels.fetch(r.groups.channel_id);
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if (!channel || !channel.isTextBased()) continue;
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if (channel instanceof ThreadChannel) {
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if (
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!channel.parent?.members?.some((user) => user.id == message.author.id)
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)
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continue; // do not reveal a message to a user who can't see it
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} else {
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if (!channel.members?.some((user) => user.id == message.author.id))
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continue; // do not reveal a message to a user who can't see it
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}
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try {
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const messageToShow = await channel.messages.fetch(r.groups.message_id);
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const builder = new EmbedBuilder()
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.setAuthor({
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name: `${messageToShow.author.username}#${messageToShow.author.discriminator}`,
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iconURL: messageToShow.author.displayAvatarURL(),
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})
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.setColor(Colors.Aqua)
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.setTimestamp(messageToShow.createdTimestamp)
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.setFooter({ text: `#${messageToShow.channel.name}` });
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if (messageToShow.content) {
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builder.setDescription(messageToShow.content);
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}
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if (messageToShow.attachments.size > 0) {
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let attachmentsString = '';
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messageToShow.attachments.forEach((value) => {
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attachmentsString += `[${value.name}](${value.url}) `;
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});
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builder.addFields({ name: 'Attachments', value: attachmentsString });
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const firstImage = findFirstImage(messageToShow);
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if (firstImage != undefined) {
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builder.setImage(firstImage);
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}
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}
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const row = new ActionRowBuilder<ButtonBuilder>().addComponents(
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new ButtonBuilder()
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.setLabel('Jump to original message')
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.setStyle(ButtonStyle.Link)
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.setURL(messageToShow.url),
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new ButtonBuilder()
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.setCustomId('delete-message')
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.setLabel('Delete')
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.setStyle(ButtonStyle.Danger)
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);
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await message.reply({
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embeds: [builder],
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components: [row],
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allowedMentions: { repliedUser: false },
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});
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n++;
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} catch (e) {
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console.error(e);
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}
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}
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}
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