feat: Add the ability to get a user's limits, including current (#153)

Signed-off-by: Jacob Schlecht <dadadah@echoha.us>

Author: Dadadah

src/Client.ts

@@ -4,7 +4,7 @@ import { batch, createSignal } from "solid-js";
 import { ReactiveMap } from "@solid-primitives/map";
 import { AsyncEventEmitter } from "@vladfrangu/async_event_emitter";
 import { API } from "stoat-api";
-import type { DataLogin, RevoltConfig, Role } from "stoat-api";
+import type { DataLogin, RevoltConfig, Role, UserLimits } from "stoat-api";
 
 import type { Channel } from "./classes/Channel.js";
 import type { Emoji } from "./classes/Emoji.js";
@@ -610,4 +610,12 @@ export class Client extends AsyncEventEmitter<Events> {
 
     this.#slowmodeTimers.set(channelId, timer);
   }
+
+  getLimits(): UserLimits | undefined {
+    if (!this.configured() || !this.user) {
+      return;
+    }
+
+    return this.user.getLimits();
+  }
 }

src/classes/User.ts

@@ -1,4 +1,9 @@
-import type { User as APIUser, DataEditUser, Presence } from "stoat-api";
+import type {
+  User as APIUser,
+  DataEditUser,
+  Presence,
+  UserLimits,
+} from "stoat-api";
 import { decodeTime } from "ulid";
 
 import type { UserCollection } from "../collections/UserCollection.js";
@@ -48,6 +53,13 @@ export class User {
     return new Date(decodeTime(this.id));
   }
 
+  /**
+   * How old this user is in milliseconds
+   */
+  get age() {
+    return new Date().getTime() - this.createdAt.getTime();
+  }
+
   /**
    * Username
    */
@@ -334,4 +346,19 @@ export class User {
       `/users/${this.id as ""}/mutual`,
     );
   }
+
+  getLimits(): UserLimits | undefined {
+    if (!this.#collection.client.configured()) {
+      return;
+    }
+    if (
+      this.age <
+      (this.#collection.client.configuration?.features.limits.global
+        .new_user_hours ?? 72) *
+        3600_0000
+    ) {
+      return this.#collection.client.configuration?.features.limits.new_user;
+    }
+    return this.#collection.client.configuration?.features.limits.default;
+  }
 }