Add !invite utility command

backend/src/plugins/Utility/functions/getInviteInfoEmbed.ts

@@ -0,0 +1,94 @@
+import { PluginData } from "knub";
+import { UtilityPluginType } from "../types";
+import { BaseInvite, Constants, EmbedOptions, RESTChannelInvite, RESTPrivateInvite } from "eris";
+import { snowflakeToTimestamp } from "../../../utils/snowflakeToTimestamp";
+import moment from "moment-timezone";
+import humanizeDuration from "humanize-duration";
+import { emptyEmbedValue, formatNumber, isRESTGroupDMInvite, isRESTGuildInvite, resolveInvite } from "../../../utils";
+
+export async function getInviteInfoEmbed(
+  pluginData: PluginData<UtilityPluginType>,
+  inviteCode: string,
+): Promise<EmbedOptions | null> {
+  const invite = await resolveInvite(pluginData.client, inviteCode, true);
+  if (!invite) {
+    return null;
+  }
+
+  if (isRESTGuildInvite(invite)) {
+    const embed: EmbedOptions = {
+      fields: [],
+    };
+
+    if (invite.guild.icon) {
+      embed.thumbnail = {
+        url: `https://cdn.discordapp.com/icons/${invite.guild.id}/${invite.guild.icon}.png?size=256`,
+      };
+    }
+
+    embed.title = `Server Invite - ${invite.guild.name}`;
+    embed.url = `https://discord.gg/${invite.code}`;
+
+    embed.fields.push({
+      name: "Server ID",
+      value: `\`${invite.guild.id}\``,
+      inline: true,
+    });
+
+    embed.fields.push({
+      name: "Channel",
+      value:
+        invite.channel.type === Constants.ChannelTypes.GUILD_VOICE
+          ? `🔉 ${invite.channel.name}\n\`${invite.channel.id}\``
+          : `#${invite.channel.name}\n\`${invite.channel.id}\``,
+    });
+
+    const createdAtTimestamp = snowflakeToTimestamp(invite.guild.id);
+    const createdAt = moment(createdAtTimestamp, "x");
+    const serverAge = humanizeDuration(Date.now() - createdAtTimestamp, {
+      largest: 2,
+      round: true,
+    });
+
+    embed.fields.push({
+      name: "Server age",
+      value: serverAge,
+    });
+
+    embed.fields.push({
+      name: "Members",
+      value: `**${formatNumber(invite.memberCount)}** (${formatNumber(invite.presenceCount)} online)`,
+      inline: true,
+    });
+
+    return embed;
+  }
+
+  if (isRESTGroupDMInvite(invite)) {
+    const embed: EmbedOptions = {
+      fields: [],
+    };
+
+    if (invite.channel.icon) {
+      embed.thumbnail = {
+        url: `https://cdn.discordapp.com/channel-icons/${invite.channel.id}/${invite.channel.icon}.png?size=256`,
+      };
+    }
+
+    embed.title = invite.channel.name ? `Group DM Invite - ${invite.channel.name}` : `Group DM Invite`;
+
+    embed.fields.push({
+      name: "Channel ID",
+      value: `\`${invite.channel.id}\``,
+    });
+
+    embed.fields.push({
+      name: "Members",
+      value: formatNumber((invite as any).memberCount),
+    });
+
+    return embed;
+  }
+
+  return null;
+}