starboard: add star count to embed, update automatically

backend/src/plugins/Starboard/util/createStarboardEmbedFromMessage.ts

@@ -0,0 +1,79 @@
+import { EmbedWith, EMPTY_CHAR, messageLink } from "../../../utils";
+import { EmbedOptions, GuildChannel, Message } from "eris";
+import path from "path";
+
+const imageAttachmentExtensions = ["jpeg", "jpg", "png", "gif", "webp"];
+const audioAttachmentExtensions = ["wav", "mp3", "m4a"];
+const videoAttachmentExtensions = ["mp4", "mkv", "mov"];
+
+type StarboardEmbed = EmbedWith<"footer" | "author" | "fields" | "timestamp">;
+
+export function createStarboardEmbedFromMessage(msg: Message, copyFullEmbed: boolean): StarboardEmbed {
+  const embed: StarboardEmbed = {
+    footer: {
+      text: `#${(msg.channel as GuildChannel).name}`,
+    },
+    author: {
+      name: `${msg.author.username}#${msg.author.discriminator}`,
+    },
+    fields: [],
+    timestamp: new Date(msg.timestamp).toISOString(),
+  };
+
+  if (msg.author.avatarURL) {
+    embed.author.icon_url = msg.author.avatarURL;
+  }
+
+  // The second condition here checks for messages with only an image link that is then embedded.
+  // The message content in that case is hidden by the Discord client, so we hide it here too.
+  if (msg.content && msg.embeds[0]?.thumbnail?.url !== msg.content) {
+    embed.description = msg.content;
+  }
+
+  // Merge media and - if copy_full_embed is enabled - fields and title from the first embed in the original message
+  if (msg.embeds.length > 0) {
+    if (msg.embeds[0].image) {
+      embed.image = msg.embeds[0].image;
+    } else if (msg.embeds[0].thumbnail) {
+      embed.image = { url: msg.embeds[0].thumbnail.url };
+    }
+
+    if (copyFullEmbed) {
+      if (msg.embeds[0].title) {
+        const titleText = msg.embeds[0].url ? `[${msg.embeds[0].title}](${msg.embeds[0].url})` : msg.embeds[0].title;
+        embed.fields.push({ name: EMPTY_CHAR, value: titleText });
+      }
+
+      if (msg.embeds[0].fields) {
+        embed.fields.push(...msg.embeds[0].fields);
+      }
+    }
+  }
+
+  // If there are no embeds, add the first image attachment explicitly
+  else if (msg.attachments.length) {
+    for (const attachment of msg.attachments) {
+      const ext = path
+        .extname(attachment.filename)
+        .slice(1)
+        .toLowerCase();
+
+      if (imageAttachmentExtensions.includes(ext)) {
+        embed.image = { url: attachment.url };
+        break;
+      }
+
+      if (audioAttachmentExtensions.includes(ext)) {
+        embed.fields.push({ name: EMPTY_CHAR, value: `*Message contains an audio clip*` });
+        break;
+      }
+
+      if (videoAttachmentExtensions.includes(ext)) {
+        embed.fields.push({ name: EMPTY_CHAR, value: `*Message contains a video*` });
+        break;
+      }
+    }
+  }
+
+  return embed;
+}