Migrate Post to new Plugin structure

backend/src/plugins/Post/util/postMessage.ts

@@ -0,0 +1,67 @@
+import { PluginData } from "knub";
+import { PostPluginType } from "../types";
+import { TextChannel, MessageContent, Attachment, Message, Role } from "eris";
+import { downloadFile, getRoleMentions } from "src/utils";
+import fs from "fs";
+import { formatContent } from "./formatContent";
+
+const fsp = fs.promises;
+
+export async function postMessage(
+  pluginData: PluginData<PostPluginType>,
+  channel: TextChannel,
+  content: MessageContent,
+  attachments: Attachment[] = [],
+  enableMentions: boolean = false,
+): Promise<Message> {
+  if (typeof content === "string") {
+    content = { content };
+  }
+
+  if (content && content.content) {
+    content.content = formatContent(content.content);
+  }
+
+  let downloadedAttachment;
+  let file;
+  if (attachments.length) {
+    downloadedAttachment = await downloadFile(attachments[0].url);
+    file = {
+      name: attachments[0].filename,
+      file: await fsp.readFile(downloadedAttachment.path),
+    };
+  }
+
+  const rolesMadeMentionable: Role[] = [];
+  if (enableMentions && content.content) {
+    const mentionedRoleIds = getRoleMentions(content.content);
+    if (mentionedRoleIds != null) {
+      for (const roleId of mentionedRoleIds) {
+        const role = pluginData.guild.roles.get(roleId);
+        if (role && !role.mentionable) {
+          await role.edit({
+            mentionable: true,
+          });
+          rolesMadeMentionable.push(role);
+        }
+      }
+    }
+
+    content.allowedMentions.everyone = false;
+  }
+
+  const createdMsg = await channel.createMessage(content, file);
+  pluginData.state.savedMessages.setPermanent(createdMsg.id);
+
+  for (const role of rolesMadeMentionable) {
+    role.edit({
+      mentionable: false,
+    });
+  }
+
+  if (downloadedAttachment) {
+    downloadedAttachment.deleteFn();
+  }
+
+  return createdMsg;
+}