feat: add link embed generation

src/tasks/mod.rs

@@ -0,0 +1,15 @@
+//! Semi-important background task management
+
+use async_std::task;
+use revolt_quark::Database;
+
+const WORKER_COUNT: usize = 10;
+
+pub mod process_embeds;
+
+/// Spawn background workers
+pub async fn start_workers(db: Database) {
+    for _ in 0..WORKER_COUNT {
+        task::spawn(process_embeds::worker(db.clone()));
+    }
+}

src/tasks/process_embeds.rs

@@ -0,0 +1,49 @@
+use crate::util::variables::{JANUARY_URL, MAX_EMBED_COUNT};
+
+use deadqueue::limited::Queue;
+use log::error;
+use revolt_quark::{
+    models::{message::AppendMessage, Message},
+    types::january::Embed,
+    Database,
+};
+
+#[derive(Debug)]
+struct EmbedTask {
+    channel: String,
+    id: String,
+    content: String,
+}
+
+lazy_static! {
+    static ref Q: Queue<EmbedTask> = Queue::new(10_000);
+}
+
+pub async fn queue(channel: String, id: String, content: String) {
+    Q.push(EmbedTask {
+        channel,
+        id,
+        content,
+    })
+    .await;
+}
+
+pub async fn worker(db: Database) {
+    loop {
+        let task = Q.pop().await;
+        if let Ok(embeds) = Embed::generate(task.content, &*JANUARY_URL, *MAX_EMBED_COUNT).await {
+            if let Err(err) = Message::append(
+                &db,
+                task.id,
+                task.channel,
+                AppendMessage {
+                    embeds: Some(embeds),
+                },
+            )
+            .await
+            {
+                error!("Encountered an error appending to message: {:?}", err);
+            }
+        }
+    }
+}