preliminary support for discord embeds using the format composer system

discord/plugin.json

@@ -2,7 +2,7 @@
   "main": "plugin.js",
   "name": "discord",
   "description": "Discord Service for Squeebot 3",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "tags": ["service", "discord"],
   "dependencies": ["control?"],
   "npmDependencies": ["discord.js@^12.5.1"]

discord/plugin.ts

@@ -10,6 +10,7 @@ import util from 'util';
 import Discord from 'discord.js';
 
 import { logger } from '@squeebot/core/lib/core';
+import { thousandsSeparator, timeSince, toHHMMSS } from '@squeebot/core/lib/common';
 import {
   EMessageType,
   Formatter,
@@ -19,6 +20,73 @@ import {
   Protocol
 } from '@squeebot/core/lib/types';
 
+class DiscordFormatter extends MarkdownFormatter {
+  public compose(objs: any): any {
+    const embed = new Discord.MessageEmbed();
+
+    for (const i in objs) {
+      const elem = objs[i];
+
+      const elemType = elem[0];
+      let elemValue = elem[1];
+      const elemParams = elem[2];
+
+      if (!elemValue || elemType !== 'field') {
+        continue;
+      }
+
+      // Special types
+      if (elemParams && elemParams.type) {
+        switch (elemParams.type) {
+          case 'time':
+            elemValue = new Date(elemValue).toString();
+            break;
+          case 'metric':
+            elemValue = thousandsSeparator(elemValue);
+            break;
+          case 'timesince':
+            elemValue = timeSince(elemValue);
+            break;
+          case 'duration':
+            elemValue = toHHMMSS(elemValue);
+            break;
+        }
+      }
+
+      if (elemParams.type === 'description') {
+        embed.setDescription(elemValue);
+        continue;
+      }
+
+      if (elemParams.type === 'title') {
+        embed.setTitle(elemValue);
+        if (elemParams.color) {
+          embed.setColor(elemParams.color.toUpperCase());
+        }
+        continue;
+      }
+
+      if (elemParams && elemParams.label) {
+        let label = elemParams.label;
+
+        // If the label param is an array, choose the last element
+        // The last element is generally the text version, as opposed to
+        // the first element being an icon.
+        if (typeof label === 'object') {
+          label = elemParams.label[elemParams.label.length - 1];
+        }
+
+        embed.addField(label, elemValue, true);
+      } else {
+        embed.setDescription(embed.description += elemValue);
+      }
+    }
+
+    // May return an object, but your protocol must support it.
+    return embed;
+  }
+}
+
 class DiscordMessageAdapter implements IMessage {
   public time: Date = new Date();
   public resolved = false;
@@ -67,7 +135,7 @@ class DiscordMessageAdapter implements IMessage {
 }
 
 class DiscordProtocol extends Protocol {
-  public format: Formatter = new MarkdownFormatter();
+  public format: Formatter = new DiscordFormatter();
   public type = 'DiscordProtocol';
 
   private client = new Discord.Client();

squeebot.repo.json

@@ -3,7 +3,7 @@
   "plugins": [
     {
       "name": "discord",
-      "version": "1.1.0"
+      "version": "1.2.0"
     }
   ],
   "typescript": true