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message-create.ts
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import { ChannelType, Client, Message, MessageCreateOptions, PartialMessage } from 'discord.js';
import { MediaModule } from './types';
import { debugLog } from './logger';
import { countSubmissions, getUserSubmissions, prisma } from './prisma';
import { messageHasMediaSource } from './media-sources';
import { buildPlaceholders, replacePlaceholders } from './placeholders';
export const tryToDMUser = async (
message: Message,
options: MessageCreateOptions,
): Promise<void> => {
const { author } = message;
try {
const dm = await author.createDM();
await dm.send(options);
} catch (e) {
debugLog(`Failed to DM user ${author.id}:`, e);
}
}
export const validateSubmissionMediaSources = async (
message: Message,
mediaModule: MediaModule,
onBadSource: () => void,
): Promise<boolean> => {
const { attachments } = message;
const {
name,
type,
allowedSources,
quantities,
} = mediaModule;
const debugTag = `[${name}/${message.id}]`;
if ( // Ensure submission source is present and allowed
!messageHasMediaSource(message.content, allowedSources, quantities.attachmentsPerSubmission)
&& (!allowedSources.find((e) => e.validationURLs.includes('attachment')) || attachments.size === 0)
) {
debugLog(`${debugTag} Invalid media source`);
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it did not contain a valid media source. Please ensure your submission contains at least one of the following:\n\n${allowedSources.map((source) => `- ${source.name}`).join('\n')}`,
});
onBadSource();
return false;
}
// Validate URL content type
const urls = message.content.split(' ').filter((word) => word.startsWith('http'));
if (urls.length >= 1) {
const fetchURL = (url: string) => fetch(url).then((res) => res.blob()).then((blob) => blob.type);
for await (const url of urls) { // One by one, escape if invalid
const contentType = await fetchURL(url);
if (contentType.startsWith('text/html') && (type === 'video' || type === 'either')) {
continue; // Skip HTML pages
}
if (type === 'image' && !contentType.startsWith('image/')) {
debugLog(`${debugTag} Invalid image URL: ${url} (${contentType})`);
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it did not contain a valid image URL. Please ensure your submission contains a valid image URL.`,
});
onBadSource();
return false;
}
if (type === 'video' && !contentType.startsWith('video/')) {
debugLog(`${debugTag} Invalid video URL: ${url} (${contentType})`);
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it did not contain a valid video URL. Please ensure your submission contains a valid video URL.`,
});
onBadSource();
return false;
}
if (type === 'either' && !contentType.startsWith('image/') && !contentType.startsWith('video/')) {
debugLog(`${debugTag} Invalid media URL: ${url} (${contentType})`);
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it did not contain a valid media URL. Please ensure your submission contains a valid media URL.`,
});
onBadSource();
return false;
}
}
}
if ( // Ensure submission has the correct amount of attachments
quantities.attachmentsPerSubmission !== null
&& attachments.size > quantities.attachmentsPerSubmission
) {
debugLog(`${debugTag} Too many attachments`);
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it contained too many attachments. Please ensure your submission contains no more than ${quantities.attachmentsPerSubmission} attachments.`,
});
onBadSource();
return false;
}
if (attachments.size) { // Ensure attachments are of allowed sources
const invalidAttachments = [...attachments.values()].filter((attachment) => {
if (type === 'image') {
return attachment.contentType?.startsWith('image/') === false;
}
if (type === 'video') {
return attachment.contentType?.startsWith('video/') === false;
}
return attachment.contentType?.startsWith('image/') === false && attachment.contentType?.startsWith('video/') === false;
});
if (invalidAttachments.length) {
debugLog(`${debugTag} Invalid attachments:`, invalidAttachments.map((attachment) => `${attachment.url} (${attachment.contentType})`));
tryToDMUser(message, {
content: `Your submission in ${message.channel} was removed because it contained invalid attachments. Please ensure your submission contains only valid attachments.`,
});
onBadSource();
return false;
}
}
return true;
}
export const honorSubmissionQuantityLimits = async (
mediaModule: MediaModule,
message: Message,
quantities: MediaModule['quantities'],
submissionCooldown: number | null,
conditionalDelete: () => void,
debugTag: string,
): Promise<boolean> => {
const { author, channel, guild } = message;
if (!guild) return false;
const [
userSubmissions,
moduleSubmissionCount,
] = await Promise.all([
getUserSubmissions(mediaModule.id, author.id, channel.id, guild.id),
countSubmissions(mediaModule.id, channel.id, guild.id)
]);
if ( // Ensure submission quantities are within limits
quantities.maxSubmissions !== null
&& moduleSubmissionCount >= quantities.maxSubmissions
) {
debugLog(`${debugTag} Too many submissions for module`);
tryToDMUser(message, {
content: `Your submission in ${channel} was removed because the module has reached its submission limit. Please try again later.`,
});
conditionalDelete();
return false;
}
if ( // Ensure user submission quantities are within limits
quantities.maxSubmissionsPerUser !== null
&& userSubmissions.length >= quantities.maxSubmissionsPerUser
) {
debugLog(`${debugTag} Too many submissions for user`);
tryToDMUser(message, {
content: `Your submission in ${channel} was removed because you have reached your submission limit. Please try again later.`,
});
conditionalDelete();
return false;
}
// Ensure user is not on cooldown
const latestSubmission = userSubmissions.sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime())[0];
if (submissionCooldown && latestSubmission) {
const timeSinceLastSubmission = (Date.now() - latestSubmission.createdAt.getTime()) / 1000;
if (timeSinceLastSubmission < submissionCooldown) {
debugLog(`${debugTag} User on cooldown`);
tryToDMUser(message, {
content: `Your submission in ${channel} was removed because you are on cooldown. Please try again in ${Math.ceil(submissionCooldown - timeSinceLastSubmission)} seconds.`,
});
conditionalDelete();
return false;
}
}
return true;
}
export const onMessageCreate = async (
client: Client<true>,
message: Message,
mediaModules: MediaModule[],
): Promise<void> => {
if (message.author.bot || !message.inGuild()) return;
const mediaModule = isMediaSubmission(message, mediaModules);
if (!mediaModule) return;
const debugTag = `[${mediaModule.name}/${message.id}]`;
const { author, channel, guild } = message;
const {
submissionCooldown,
deleteNonSubmissions,
quantities,
votingEmojis,
submissionThread,
} = mediaModule;
if (!guild) {
debugLog(`${debugTag} Message not in guild`);
return;
}
if (channel.isDMBased()) {
debugLog(`${debugTag} Message in DM channel`);
return;
}
if (!channel.isTextBased()) {
debugLog(`${debugTag} Message not in text channel`);
return;
}
if (channel.isThread()) {
debugLog(`${debugTag} Message in thread channel`);
return;
}
if (channel.type === ChannelType.GuildVoice || channel.type === ChannelType.GuildStageVoice) {
debugLog(`${debugTag} Message in voice channel`);
return;
}
const conditionalDelete = () => {
if (deleteNonSubmissions) {
message.delete().catch((e) => {
debugLog(`${debugTag} Failed to delete message:`, e);
});
}
}
// Validate media sources
if (!await validateSubmissionMediaSources(message, mediaModule, conditionalDelete)) {
return; // Submission has invalid media source(s) and was deleted
}
// Make sure we don't exceed submission quantity limits
await honorSubmissionQuantityLimits(
mediaModule,
message,
quantities,
submissionCooldown,
conditionalDelete,
debugTag,
);
// Everything is okay, let's do the thing =)
const [ submission ] = await Promise.all([
prisma.submission.create({
data: {
mediaModuleId: mediaModule.id,
userId: author.id,
guildId: guild.id,
messageId: message.id,
channelId: channel.id,
processed: false,
processedAt: null,
cooldownExpiresAt: submissionCooldown ? new Date(Date.now() + submissionCooldown * 1000) : null,
},
}),
message.react(votingEmojis.upvote).then(() => message.react(votingEmojis.downvote)).catch((e) => {
debugLog(`${debugTag} Failed to react to message:`, e);
}),
])
if (submissionThread.enabled) {
const placeholders = await buildPlaceholders(
mediaModule,
submission,
submission.createdAt,
message,
);
if (!placeholders) {
debugLog(`${debugTag} Failed to build placeholders - this most likely means the message couldn't be resolved, aborting...`);
return;
}
await channel.threads.create({
name: replacePlaceholders(submissionThread.name, placeholders),
autoArchiveDuration: submissionThread.autoArchiveDuration ?? undefined,
startMessage: message,
reason: 'Submission feedback thread for organized discussion/feedback.',
rateLimitPerUser: submissionThread.rateLimitPerUser ?? undefined,
}).catch((e) => {
debugLog(`${debugTag} Failed to create submission thread:`, e);
})
}
}
export const isMediaSubmission = (
message: Message | PartialMessage,
mediaModules: MediaModule[],
): false | MediaModule => {
const module = mediaModules.find((module) => module.submissionsChannelId === message.channel.id);
return module ?? false;
}