add rate limit handler

src/main/java/cc/fascinated/common/Request.java

@@ -0,0 +1,90 @@
+package cc.fascinated.common;
+
+import kong.unirest.core.Headers;
+import kong.unirest.core.HttpResponse;
+import kong.unirest.core.Unirest;
+import lombok.extern.log4j.Log4j2;
+
+import java.util.List;
+
+/**
+ * @author Fascinated (fascinated7)
+ */
+@Log4j2(topic = "Request")
+public class Request {
+    /**
+     * The rate limit headers.
+     */
+    private static final List<String> rateLimitHeaders = List.of(
+            "X-RateLimit-Remaining",
+            "RateLimit-Remaining"
+    );
+
+    /**
+     * The rate limit reset headers.
+     */
+    private static final List<String> rateLimitResetHeaders = List.of(
+            "X-RateLimit-Reset",
+            "RateLimit-Reset"
+    );
+
+    /**
+     * Sends a GET request to a URL.
+     *
+     * @param url the URL to send the request to
+     * @param clazz the class to parse the response to
+     * @param <T> the type of the response
+     * @return the response
+     */
+    public static <T> HttpResponse<T> get(String url, Class<T> clazz) {
+        HttpResponse<T> response = Unirest.get(url).asObject(clazz);
+        int rateLimitRemaining = getRateLimitRemaining(response);
+        if (rateLimitRemaining == 0) {
+            long rateLimitReset = getRateLimitReset(response);
+            long timeLeft = rateLimitReset - System.currentTimeMillis();
+            try {
+                Thread.sleep(timeLeft);
+            } catch (InterruptedException e) {
+                log.error("Failed to sleep for rate limit reset", e);
+            }
+            response = Unirest.get(url).asObject(clazz);
+        }
+        return response;
+    }
+
+    /**
+     * Gets the rate limit remaining.
+     *
+     * @param response the response to get the rate limit remaining from
+     * @return the rate limit remaining
+     */
+    public static int getRateLimitRemaining(HttpResponse<?> response) {
+        Headers headers = response.getHeaders();
+        for (String rateLimitHeader : rateLimitHeaders) {
+            if (headers.containsKey(rateLimitHeader)) {
+                return Integer.parseInt(headers.getFirst(rateLimitHeader));
+            }
+        }
+        return -1;
+    }
+
+    /**
+     * Gets the rate limit reset absolute time.
+     *
+     * @param response the response to get the rate limit reset time from
+     * @return the rate limit reset time
+     */
+    public static long getRateLimitReset(HttpResponse<?> response) {
+        Headers headers = response.getHeaders();
+        for (String rateLimitResetHeader : rateLimitResetHeaders) {
+            if (headers.containsKey(rateLimitResetHeader)) {
+                long reset = Long.parseLong(headers.getFirst(rateLimitResetHeader));
+                if (reset < 86400) {// Assume it's in seconds left
+                    return System.currentTimeMillis() + reset * 1000;
+                }
+                return reset * 1000; // Assume it's in seconds
+            }
+        }
+        return -1;
+    }
+}

src/main/java/cc/fascinated/platform/impl/ScoreSaberPlatform.java

@@ -30,7 +30,7 @@ public class ScoreSaberPlatform extends Platform {
     /**
      * Delay in ms for requests per minute.
      */
-    private static final long UPDATE_DELAY = 1000L / 250L; // 250 requests per minute
+    private static final long UPDATE_DELAY = 1000L / 150L; // 150 requests per minute
 
     /**
      * The base multiplier for stars.

src/main/java/cc/fascinated/services/ScoreSaberService.java

@@ -1,5 +1,6 @@
 package cc.fascinated.services;
 
+import cc.fascinated.common.Request;
 import cc.fascinated.exception.impl.BadRequestException;
 import cc.fascinated.model.token.ScoreSaberAccountToken;
 import cc.fascinated.model.token.ScoreSaberLeaderboardToken;
@@ -45,8 +46,7 @@ public class ScoreSaberService {
             throw new BadRequestException("%s does not have a linked ScoreSaber account".formatted(user.getUsername()));
         }
 
-        HttpResponse<ScoreSaberAccountToken> response = Unirest.get(GET_PLAYER_ENDPOINT.formatted(user.getSteamId()))
-                .asObject(ScoreSaberAccountToken.class);
+        HttpResponse<ScoreSaberAccountToken> response = Request.get(GET_PLAYER_ENDPOINT.formatted(user.getSteamId()), ScoreSaberAccountToken.class);
         if (response.getParsingError().isPresent()) { // Failed to parse the response
             throw new BadRequestException("Failed to parse ScoreSaber account for '%s'".formatted(user.getUsername()));
         }
@@ -69,8 +69,7 @@ public class ScoreSaberService {
             return leaderboardOptional.get();
         }
 
-        HttpResponse<ScoreSaberLeaderboardToken> response = Unirest.get(GET_LEADERBOARD_ENDPOINT.formatted(leaderboardId))
-                .asObject(ScoreSaberLeaderboardToken.class);
+        HttpResponse<ScoreSaberLeaderboardToken> response = Request.get(GET_LEADERBOARD_ENDPOINT.formatted(leaderboardId), ScoreSaberLeaderboardToken.class);
         if (response.getParsingError().isPresent()) { // Failed to parse the response
             throw new BadRequestException("Failed to parse ScoreSaber leaderboard for '%s'".formatted(leaderboardId));
         }