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zeppelin/src/plugins/ReactionRoles.ts
2019-01-12 13:42:11 +02:00

164 lines
5.5 KiB
TypeScript

import { Plugin, decorators as d } from "knub";
import { CustomEmoji, errorMessage, isSnowflake } from "../utils";
import { GuildReactionRoles } from "../data/GuildReactionRoles";
import { Channel, Message, TextChannel } from "eris";
type ReactionRolePair = [string, string];
export class ReactionRolesPlugin extends Plugin {
public static pluginName = "reaction_roles";
protected reactionRoles: GuildReactionRoles;
getDefaultOptions() {
return {
permissions: {
manage: false
},
overrides: [
{
level: ">=100",
permissions: {
manage: true
}
}
]
};
}
async onLoad() {
this.reactionRoles = GuildReactionRoles.getInstance(this.guildId);
return;
// Pre-fetch all messages with reaction roles so we get their events
const reactionRoles = await this.reactionRoles.all();
const channelMessages: Map<string, Set<string>> = reactionRoles.reduce((map: Map<string, Set<string>>, row) => {
if (!map.has(row.channel_id)) map.set(row.channel_id, new Set());
map.get(row.channel_id).add(row.message_id);
return map;
}, new Map());
const msgLoadPromises = [];
for (const [channelId, messageIdSet] of channelMessages.entries()) {
const messageIds = Array.from(messageIdSet.values());
const channel = (await this.guild.channels.get(channelId)) as TextChannel;
if (!channel) continue;
for (const messageId of messageIds) {
msgLoadPromises.push(channel.getMessage(messageId));
}
}
await Promise.all(msgLoadPromises);
}
@d.command("reaction_roles", "<channel:channel> <messageId:string> <reactionRolePairs:string$>")
@d.permission("manage")
async reactionRolesCmd(msg: Message, args: { channel: Channel; messageId: string; reactionRolePairs: string }) {
if (!(args.channel instanceof TextChannel)) {
msg.channel.createMessage(errorMessage("Channel must be a text channel!"));
return;
}
const targetMessage = await args.channel.getMessage(args.messageId);
if (!targetMessage) {
args.channel.createMessage(errorMessage("Unknown message!"));
return;
}
const guildEmojis = this.guild.emojis as CustomEmoji[];
const guildEmojiIds = guildEmojis.map(e => e.id);
// Turn "emoji = role" pairs into an array of tuples of the form [emoji, roleId]
// Emoji is either a unicode emoji or the snowflake of a custom emoji
const newRolePairs: ReactionRolePair[] = args.reactionRolePairs
.trim()
.split("\n")
.map(v => v.split("=").map(v => v.trim())) // tslint:disable-line
.map(
(pair): ReactionRolePair => {
const customEmojiMatch = pair[0].match(/^<:(?:.*?):(\d+)>$/);
if (customEmojiMatch) {
return [customEmojiMatch[1], pair[1]];
} else {
return pair as ReactionRolePair;
}
}
);
// Verify the specified emojis and roles are valid
for (const pair of newRolePairs) {
if (isSnowflake(pair[0]) && !guildEmojiIds.includes(pair[0])) {
msg.channel.createMessage(errorMessage("I can only use regular emojis and custom emojis from this server"));
return;
}
if (!this.guild.roles.has(pair[1])) {
msg.channel.createMessage(errorMessage(`Unknown role ${pair[1]}`));
return;
}
}
const oldReactionRoles = await this.reactionRoles.getForMessage(targetMessage.id);
const oldRolePairs: ReactionRolePair[] = oldReactionRoles.map(r => [r.emoji, r.role_id] as ReactionRolePair);
// Remove old reaction/role pairs that weren't included in the new pairs or were changed in some way
const toRemove = oldRolePairs.filter(
pair => !newRolePairs.find(oldPair => oldPair[0] === pair[0] && oldPair[1] === pair[1])
);
for (const rolePair of toRemove) {
await this.reactionRoles.removeFromMessage(targetMessage.id, rolePair[0]);
for (const reaction of targetMessage.reactions.values()) {
if (reaction.emoji.id === rolePair[0] || reaction.emoji.name === rolePair[0]) {
reaction.remove(this.bot.user.id);
}
}
}
// Add new/changed reaction/role pairs
const toAdd = newRolePairs.filter(
pair => !oldRolePairs.find(oldPair => oldPair[0] === pair[0] && oldPair[1] === pair[1])
);
for (const rolePair of toAdd) {
let emoji;
if (isSnowflake(rolePair[0])) {
// Custom emoji
const guildEmoji = guildEmojis.find(e => e.id === emoji.id);
emoji = `${guildEmoji.name}:${guildEmoji.id}`;
} else {
// Unicode emoji
emoji = rolePair[0];
}
await targetMessage.addReaction(emoji);
await this.reactionRoles.add(args.channel.id, targetMessage.id, rolePair[0], rolePair[1]);
}
}
@d.event("messageReactionAdd")
async onAddReaction(msg: Message, emoji: CustomEmoji, userId: string) {
const matchingReactionRole = await this.reactionRoles.getByMessageAndEmoji(msg.id, emoji.id || emoji.name);
if (!matchingReactionRole) return;
const member = this.guild.members.get(userId);
if (!member) return;
member.addRole(matchingReactionRole.role_id);
}
@d.event("messageReactionRemove")
async onRemoveReaction(msg: Message, emoji: CustomEmoji, userId: string) {
const matchingReactionRole = await this.reactionRoles.getByMessageAndEmoji(msg.id, emoji.id || emoji.name);
if (!matchingReactionRole) return;
const member = this.guild.members.get(userId);
if (!member) return;
member.removeRole(matchingReactionRole.role_id);
}
}