Support bulk queuing with queueAll in /music/{guildId}/queue

Extended the queue endpoint to allow bulk queuing of all search candidates by specifying `queueAll=true`. Updated relevant request and response DTOs, OpenAPI documentation, and endpoint logic to handle bulk queuing while maintaining input validation for individual candidates.

src/main/java/me/bobert/netneutrality/http/server/MusicRoutes.java

@@ -275,7 +275,7 @@ public final class MusicRoutes {
     @OpenApi(
         path = "/music/{guildId}/queue",
         methods = HttpMethod.POST,
-        summary = "Queue a previously returned search candidate by passing the searchId/index returned by /music/{guildId}/search; the bot must already be connected to a voice channel in this guild",
+        summary = "Queue a previously returned search candidate by passing the searchId/index returned by /music/{guildId}/search, or queue every candidate at once by passing searchId with queueAll=true; the bot must already be connected to a voice channel in this guild",
         tags = {"Music"},
         pathParams = @OpenApiParam(name = "guildId", description = "The Discord guild id"),
         requestBody = @OpenApiRequestBody(content = @OpenApiContent(from = QueueRequest.class)),
@@ -344,9 +344,10 @@ public final class MusicRoutes {
      */
     private static void playSelect(Guild guild, MusicManager manager, QueueRequest body, String userId, Context ctx) {
         String searchId = body.searchId();
+        boolean queueAll = Boolean.TRUE.equals(body.queueAll());
         Integer index = body.index();
-        if (index == null) {
-            throw new BadRequestResponse("index is required when searchId is provided");
+        if (!queueAll && index == null) {
+            throw new BadRequestResponse("index is required when searchId is provided unless queueAll is true");
         }
 
         List<Track> candidates = PendingSearchResults.consume(searchId, guild.getId());
@@ -354,7 +355,7 @@ public final class MusicRoutes {
             throw new NotFoundResponse("Unknown or expired searchId");
         }
 
-        if (index < 0 || index >= candidates.size()) {
+        if (!queueAll && (index < 0 || index >= candidates.size())) {
             throw new BadRequestResponse("index is out of range");
         }
 
@@ -362,6 +363,16 @@ public final class MusicRoutes {
             throw new BadRequestResponse("The bot isn't connected to a voice channel in this guild");
         }
 
+        if (queueAll) {
+            ctx.future(() -> resolveMember(guild, userId)
+                .thenApply(member -> {
+                    candidates.forEach(candidate -> manager.getQueueManager().queue(candidate, member));
+                    ctx.json(queuedAllBody(candidates, manager.getQueueSize()));
+                    return null;
+                }));
+            return;
+        }
+
         Track track = candidates.get(index);
 
         ctx.future(() -> resolveMember(guild, userId)
@@ -444,6 +455,18 @@ public final class MusicRoutes {
         return body;
     }
 
+    /**
+     * Builds a JSON-friendly body for a batch of tracks that were just queued via {@code
+     * queueAll}.
+     */
+    private static Map<String, Object> queuedAllBody(List<Track> tracks, int queueSize) {
+        Map<String, Object> body = new LinkedHashMap<>();
+        body.put("status", "queued_all");
+        body.put("tracks", tracks.stream().map(MusicRoutes::trackSummary).toList());
+        body.put("queue_position", queueSize);
+        return body;
+    }
+
     /**
      * Resolves the {@link MusicManager} for the guild path parameter, creating it on first use.
      */

src/main/java/me/bobert/netneutrality/http/server/dto/QueueRequest.java

@@ -11,11 +11,15 @@ package me.bobert.netneutrality.http.server.dto;
  *
  * @param userId   the Discord user id to credit as the requester
  * @param searchId a search id previously returned by {@code /music/{guildId}/search}
- * @param index    the index of the candidate to queue within the {@code searchId}'s results
+ * @param index    the index of the candidate to queue within the {@code searchId}'s results;
+ *                 ignored when {@code queueAll} is {@code true}
+ * @param queueAll when {@code true}, queues every candidate of the {@code searchId}'s results
+ *                 instead of a single {@code index}
  */
 public record QueueRequest(
     String userId,
     String searchId,
-    Integer index
+    Integer index,
+    Boolean queueAll
 ) {
 }

src/main/java/me/bobert/netneutrality/http/server/dto/QueueResponse.java

@@ -14,11 +14,13 @@ import java.util.List;
  *
  * <p>Nothing is ever queued directly by {@code /music/{guildId}/search}: every resolved query is
  * stashed as a pending candidate, to be confirmed via a follow-up {@code /music/{guildId}/queue}
- * call carrying {@code searchId}/{@code index}. Fields are nullable since only a subset is populated depending
- * on {@code status}: {@code queued} fills {@code track}/{@code queue_position} (confirmed
- * selection), {@code pending_track} fills {@code search_id}/{@code search_id_ttl_seconds}/{@code track}, {@code
- * pending_playlist} fills {@code search_id}/{@code search_id_ttl_seconds}/{@code tracks}/{@code truncated}, and
- * {@code pending_search} fills {@code search_id}/{@code search_id_ttl_seconds}/{@code candidates}.
+ * call carrying {@code searchId}/{@code index} (or {@code queueAll}). Fields are nullable since only a subset is
+ * populated depending on {@code status}: {@code queued} fills {@code track}/{@code queue_position} (confirmed
+ * selection), {@code queued_all} fills {@code tracks}/{@code queue_position} (confirmed bulk selection; {@code
+ * queue_position} is the resulting queue size), {@code pending_track} fills {@code search_id}/{@code
+ * search_id_ttl_seconds}/{@code track}, {@code pending_playlist} fills {@code search_id}/{@code
+ * search_id_ttl_seconds}/{@code tracks}/{@code truncated}, and {@code pending_search} fills {@code search_id}/{@code
+ * search_id_ttl_seconds}/{@code candidates}.
  * {@code search_id_ttl_seconds} indicates how many seconds remain before the {@code search_id} expires.
  */
 public record QueueResponse(