Add formatters for system messages

This has backwards-compatibility-breaking changes to the signature
of thread.postSystemMessage() and thread.sendSystemMessageToUser().

src/data/Thread.js

@@ -359,8 +359,7 @@ class Thread {
     // Interrupt scheduled closing, if in progress
     if (this.scheduled_close_at) {
       await this.cancelScheduledClose();
-      await this.postSystemMessage({
+      await this.postSystemMessage(`<@!${this.scheduled_close_id}> Thread that was scheduled to be closed got a new reply. Cancelling.`, {
-        content: `<@!${this.scheduled_close_id}> Thread that was scheduled to be closed got a new reply. Cancelling.`,
         allowedMentions: {
           users: [this.scheduled_close_id],
         },
@@ -372,8 +371,7 @@ class Thread {
       const mentionsStr = ids.map(id => `<@!${id}> `).join("");
 
       await this.deleteAlerts();
-      await this.postSystemMessage({
+      await this.postSystemMessage(`${mentionsStr}New message from ${this.user_name}`, {
-        content: `${mentionsStr}New message from ${this.user_name}`,
         allowedMentions: {
           users: ids,
         },
@@ -389,47 +387,64 @@ class Thread {
   }
 
   /**
-   * @param {Eris.MessageContent} content
+   * @param {string} text
-   * @param {Eris.MessageFile} file
    * @param {object} opts
-   * @param {boolean} opts.saveToLog
+   * @param {object} [allowedMentions] Allowed mentions for the thread channel message
-   * @param {string} opts.logBody
+   * @param {boolean} [allowedMentions.everyone]
+   * @param {boolean|string[]} [allowedMentions.roles]
+   * @param {boolean|string[]} [allowedMentions.users]
    * @returns {Promise<void>}
    */
-  async postSystemMessage(content, file = null, opts = {}) {
+  async postSystemMessage(text, opts = {}) {
-    const msg = await this._postToThreadChannel(content, file);
+    const threadMessage = new ThreadMessage({
-    if (msg && opts.saveToLog !== false) {
-      await this._addThreadMessageToDB({
       message_type: THREAD_MESSAGE_TYPE.SYSTEM,
       user_id: null,
       user_name: "",
-        body: msg.content || "<empty message>",
+      body: text,
       is_anonymous: 0,
-        inbox_message_id: msg.id,
     });
-    }
+
+    const content = await formatters.formatSystemThreadMessage(threadMessage);
+
+    const finalContent = typeof content === "string" ? { content } : content;
+    finalContent.allowedMentions = opts.allowedMentions;
+    const msg = await this._postToThreadChannel(finalContent);
+
+    threadMessage.inbox_message_id = msg.id;
+    await this._addThreadMessageToDB(threadMessage.getSQLProps());
   }
 
   /**
-   * @param {Eris.MessageContent} content
+   * @param {string} text
-   * @param {Eris.MessageFile} file
    * @param {object} opts
-   * @param {boolean} opts.saveToLog
+   * @param {object} [allowedMentions] Allowed mentions for the thread channel message
-   * @param {string} opts.logBody
+   * @param {boolean} [allowedMentions.everyone]
+   * @param {boolean|string[]} [allowedMentions.roles]
+   * @param {boolean|string[]} [allowedMentions.users]
    * @returns {Promise<void>}
    */
-  async sendSystemMessageToUser(content, file = null, opts = {}) {
+  async sendSystemMessageToUser(text, opts = {}) {
-    const msg = await this._sendDMToUser(content, file);
+    const threadMessage = new ThreadMessage({
-    if (opts.saveToLog !== false) {
-      await this._addThreadMessageToDB({
       message_type: THREAD_MESSAGE_TYPE.SYSTEM_TO_USER,
       user_id: null,
       user_name: "",
-        body: msg.content || "<empty message>",
+      body: text,
       is_anonymous: 0,
-        dm_message_id: msg.id,
     });
-    }
+
+    const dmContent = await formatters.formatSystemToUserDM(threadMessage);
+    const dmMsg = await this._sendDMToUser(dmContent);
+
+    const inboxContent = await formatters.formatSystemToUserThreadMessage(threadMessage);
+    const finalInboxContent = typeof inboxContent === "string" ? { content: inboxContent } : inboxContent;
+    finalInboxContent.allowedMentions = opts.allowedMentions;
+    const inboxMsg = await this._postToThreadChannel(inboxContent);
+
+    threadMessage.inbox_message_id = inboxMsg.id;
+    threadMessage.dm_channel_id = dmMsg.channel.id;
+    threadMessage.dm_message_id = dmMsg.id;
+
+    await this._addThreadMessageToDB(threadMessage.getSQLProps());
   }
 
   /**

src/formatters.js

@@ -43,6 +43,27 @@ const moment = require("moment");
  * @return {Eris.MessageContent} Message content to post in the thread channel
  */
 
+/**
+ * Function to format a system message in a thread channel
+ * @callback FormatSystemThreadMessage
+ * @param {ThreadMessage} threadMessage
+ * @return {Eris.MessageContent} Message content to post in the thread channel
+ */
+
+/**
+ * Function to format a system message sent to the user in a thread channel
+ * @callback FormatSystemToUserThreadMessage
+ * @param {ThreadMessage} threadMessage
+ * @return {Eris.MessageContent} Message content to post in the thread channel
+ */
+
+/**
+ * Function to format the DM that is sent to the user when the bot sends a system message to the user
+ * @callback FormatSystemToUserDM
+ * @param {ThreadMessage} threadMessage
+ * @return {Eris.MessageContent} Message content to send as a DM
+ */
+
 /**
  * @typedef {Object} FormatLogOptions
  * @property {Boolean?} simple
@@ -71,6 +92,9 @@ const moment = require("moment");
  * @property {FormatUserReplyThreadMessage} formatUserReplyThreadMessage
  * @property {FormatStaffReplyEditNotificationThreadMessage} formatStaffReplyEditNotificationThreadMessage
  * @property {FormatStaffReplyDeletionNotificationThreadMessage} formatStaffReplyDeletionNotificationThreadMessage
+ * @property {FormatSystemThreadMessage} formatSystemThreadMessage
+ * @property {FormatSystemToUserThreadMessage} formatSystemToUserThreadMessage
+ * @property {FormatSystemToUserDM} formatSystemToUserDM
  * @property {FormatLog} formatLog
  */
 
@@ -148,6 +172,36 @@ const defaultFormatters = {
     return content;
   },
 
+  formatSystemThreadMessage(threadMessage) {
+    let result = threadMessage.body;
+
+    for (const link of threadMessage.attachments) {
+      result += `\n\n${link}`;
+    }
+
+    return result;
+  },
+
+  formatSystemToUserThreadMessage(threadMessage) {
+    let result = `**[BOT TO USER]** ${threadMessage.body}`;
+
+    for (const link of threadMessage.attachments) {
+      result += `\n\n${link}`;
+    }
+
+    return result;
+  },
+
+  formatSystemToUserDM(threadMessage) {
+    let result = threadMessage.body;
+
+    for (const link of threadMessage.attachments) {
+      result += `\n\n${link}`;
+    }
+
+    return result;
+  },
+
   formatLog(thread, threadMessages, opts = {}) {
     if (opts.simple) {
       threadMessages = threadMessages.filter(message => {
@@ -242,6 +296,9 @@ const formatters = { ...defaultFormatters };
  * @property {function(FormatUserReplyThreadMessage): void} setUserReplyThreadMessageFormatter
  * @property {function(FormatStaffReplyEditNotificationThreadMessage): void} setStaffReplyEditNotificationThreadMessageFormatter
  * @property {function(FormatStaffReplyDeletionNotificationThreadMessage): void} setStaffReplyDeletionNotificationThreadMessageFormatter
+ * @property {function(FormatSystemThreadMessage): void} setSystemThreadMessageFormatter
+ * @property {function(FormatSystemToUserThreadMessage): void} setSystemToUserThreadMessageFormatter
+ * @property {function(FormatSystemToUserDM): void} setSystemToUserDMFormatter
  * @property {function(FormatLog): void} setLogFormatter
  */
 
@@ -275,6 +332,18 @@ module.exports = {
     formatters.formatStaffReplyDeletionNotificationThreadMessage = fn;
   },
 
+  setSystemThreadMessageFormatter(fn) {
+    formatters.formatSystemThreadMessage = fn;
+  },
+
+  setSystemToUserThreadMessageFormatter(fn) {
+    formatters.formatSystemToUserThreadMessage = fn;
+  },
+
+  setSystemToUserDMFormatter(fn) {
+    formatters.formatSystemToUserDM = fn;
+  },
+
   setLogFormatter(fn) {
     formatters.formatLog = fn;
   },