Messages service, ceched promises, adding 'hydration' models

src/services/messages.ts

@@ -0,0 +1,26 @@
+import { Message } from "../types/message";
+import type { API } from "./api";
+import { ObjectCache } from "./cache";
+import type { Client } from "./client";
+import type { Processor } from "./processor";
+
+export class Messages extends ObjectCache<Message> {
+    constructor (protected client: Client, api: API, processor: Processor) {
+        super(api, processor, 'message', (data) => Message.factory(data, client, api), ['MESSAGE_CREATE', 'MESSAGE_UPDATE']);
+    }
+
+    async fetch(channel_id: string, message_id: string, resolveReference: boolean = true): Promise<Message> {
+        const req = this.api.get(`/channels/${channel_id}/messages/${message_id}`).then((data) => Message.factory(data, this.client, this.api, undefined, resolveReference));
+        this.cache.set(message_id, req);
+        req.catch(() => this.cache.delete(message_id));
+        return await req;
+    }
+
+    async get(channel_id: string, message_id: string, resolveReference: boolean = true): Promise<Message> {
+        if (this.cache.has(message_id)) {
+            return await Promise.resolve(this.cache.get(message_id)!);
+        } else {
+            return this.fetch(channel_id, message_id, resolveReference);
+        }
+    }
+}