add attachments and reply support to minecraft bridge

scripts/minecraft.js

@@ -148,14 +148,44 @@ async function sendBridgeMessageAs(guildId, channelId, content, username=undefin
     });
 }
 
-async function sendMinecraftMessageAs(rcon, username, content) {
+async function sendMinecraftMessageAs(rcon, username, content, attachments=[], referencedMessage=null) {
-    rcon.send(`tellraw @a ${JSON.stringify([
+    const tellrawPayload = [
         { text: "[" },
         { text: `${username}`, color: "gray" },
         { text: "]" },
         { text: " " },
-        { text: content },
+    ];
-    ])}`);
+
+    if (referencedMessage) {
+        let trimmedContent = referencedMessage.content.substring(0, 50);
+        if (trimmedContent !== referencedMessage.content) {
+            trimmedContent += "...";
+        }
+        tellrawPayload.push({
+            text: `<replying to ${referencedMessage.author.username}: ${trimmedContent}>`
+        });
+        tellrawPayload.push({
+            text: " "
+        });
+    }
+
+    attachments.forEach((e) => {
+        tellrawPayload.push({
+            text: `<open attachment: ${e.filename || "[unknown]"}>`,
+            color: "gray",
+            clickEvent: {
+                action: "open_url",
+                value: e.proxy_url
+            }
+        });
+        tellrawPayload.push({
+            text: " "
+        });
+    });
+
+    tellrawPayload.push({ text: content });
+    
+    rcon.send(`tellraw @a ${JSON.stringify(tellrawPayload)}`);
 }
 
 async function main() {
@@ -171,7 +201,7 @@ async function main() {
     const gateway = new GatewayClient(GATEWAY_ORIGIN);
     gateway.onEvent = (e) => {
         if (e.eventType === "MESSAGE_CREATE" && e.message.channel_id === TARGET_CHANNEL_ID && e.message.guild_id === TARGET_GUILD_ID && !e.message.webhook_id) {
-            sendMinecraftMessageAs(rconConnection, e.message.author.username, e.message.content);
+            sendMinecraftMessageAs(rconConnection, e.message.author.username, e.message.content, e.message.attachments, e.message.referenced_message);
         }
     };
     rconConnection.connect();