feat(access): manage spawn bans

README.md

@@ -37,6 +37,9 @@ Each world initially uses its native spawn and a 20-block circular radius. An op
 /spawnadmin grant <player> <duration>
 /spawnadmin remove <player>
 /spawnadmin access [page]
+/spawnadmin ban <player>
+/spawnadmin unban <player>
+/spawnadmin bans [page]
 ```
 
 Grant durations support friendly units and combinations such as `30m`, `2h`, `1d`, or `1h30m`.

design/log.md

@@ -45,3 +45,9 @@ description: Chronological record of significant Trigger Spawn design decisions.
 - Added custom `/spawn` cooldown grants with safe, friendly duration parsing.
 - Added complete access resets and a paginated view of naturally and administratively eligible players.
 - Administrative targets resolve online players, persisted names, server-known offline players, and known UUIDs while state remains keyed by UUID.
+
+## 2026-08-08 — Spawn bans
+
+- Added persistent `/spawn` bans, unbans, and paginated ban listing for online and resolvable offline players.
+- Banning immediately clears grants, boss progress, and cooldown state; unbanning restores none of them.
+- Banned player state cannot retain natural or granted access.

design/user-stories/us-005-manage-spawn-bans.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-005: Ban and unban spawn access"
 description: Let administrators prevent selected players from using or reacquiring spawn teleportation until unbanned.
-status: backlog
+status: done
 ---
 
 # US-005: Ban and unban spawn access
@@ -11,15 +11,15 @@ As a **server administrator**, I want to ban and unban players from spawn telepo
 
 ## Acceptance criteria
 
-- [ ] `/spawnadmin ban <player>` immediately prevents the player from using `/spawn`.
-- [ ] Banning a player clears their administrative grant, enemy progress, and active cooldown.
-- [ ] Qualifying kills made while banned are not recorded.
-- [ ] A banned player cannot receive an administrative grant until unbanned.
-- [ ] `/spawnadmin bans [page]` displays a paginated list of banned players, including offline players.
-- [ ] `/spawnadmin unban <player>` removes the ban without restoring any prior grant, enemy progress, or cooldown.
-- [ ] An unbanned player begins with no access and can earn access again by defeating a qualifying enemy or receiving a new grant.
-- [ ] Ban and unban commands support online players and previously known offline players when they can be resolved safely.
-- [ ] Ban state is associated with player UUIDs and survives server and plugin restarts.
+- [x] `/spawnadmin ban <player>` immediately prevents the player from using `/spawn`.
+- [x] Banning a player clears their administrative grant, enemy progress, and active cooldown.
+- [x] Qualifying kills made while banned are not recorded.
+- [x] A banned player cannot receive an administrative grant until unbanned.
+- [x] `/spawnadmin bans [page]` displays a paginated list of banned players, including offline players.
+- [x] `/spawnadmin unban <player>` removes the ban without restoring any prior grant, enemy progress, or cooldown.
+- [x] An unbanned player begins with no access and can earn access again by defeating a qualifying enemy or receiving a new grant.
+- [x] Ban and unban commands support online players and previously known offline players when they can be resolved safely.
+- [x] Ban state is associated with player UUIDs and survives server and plugin restarts.
 
 ## Related
 

src/main/java/games/dmg/triggerspawn/BanEntry.java

@@ -0,0 +1,6 @@
+package games.dmg.triggerspawn;
+
+import java.util.UUID;
+
+record BanEntry(UUID playerId, String playerName) {
+}

src/main/java/games/dmg/triggerspawn/SpawnAdminCommand.java

@@ -20,16 +20,19 @@ final class SpawnAdminCommand implements CommandExecutor, TabCompleter {
 
     private final SpawnAreaService spawnAreas;
     private final AccessService access;
+    private final SpawnBanService bans;
     private final PlayerResolver players;
     private final Clock clock;
 
     SpawnAdminCommand(
             SpawnAreaService spawnAreas,
             AccessService access,
+            SpawnBanService bans,
             PlayerResolver players,
             Clock clock) {
         this.spawnAreas = spawnAreas;
         this.access = access;
+        this.bans = bans;
         this.players = players;
         this.clock = clock;
     }
@@ -52,6 +55,9 @@ final class SpawnAdminCommand implements CommandExecutor, TabCompleter {
             case "grant" -> grant(player, arguments);
             case "remove" -> remove(player, arguments);
             case "access" -> listAccess(player, arguments);
+            case "ban" -> ban(player, arguments);
+            case "unban" -> unban(player, arguments);
+            case "bans" -> listBans(player, arguments);
             default -> {
                 sendUsage(player, label);
                 yield true;
@@ -66,7 +72,7 @@ final class SpawnAdminCommand implements CommandExecutor, TabCompleter {
             return List.of();
         }
         String prefix = arguments[0].toLowerCase(Locale.ROOT);
-        return List.of("set", "distance", "info", "grant", "remove", "access").stream()
+        return List.of("set", "distance", "info", "grant", "remove", "access", "ban", "unban", "bans").stream()
                 .filter(value -> value.startsWith(prefix))
                 .toList();
     }
@@ -224,6 +230,69 @@ final class SpawnAdminCommand implements CommandExecutor, TabCompleter {
         return true;
     }
 
+    private boolean ban(Player player, String[] arguments) {
+        return changeBan(player, arguments, true);
+    }
+
+    private boolean unban(Player player, String[] arguments) {
+        return changeBan(player, arguments, false);
+    }
+
+    private boolean changeBan(Player player, String[] arguments, boolean banned) {
+        String operation = banned ? "ban" : "unban";
+        if (arguments.length != 2) {
+            player.sendMessage(ChatColor.RED + "Usage: /spawnadmin " + operation + " <player>");
+            return true;
+        }
+        PlayerIdentity identity = players.resolve(arguments[1]).orElse(null);
+        if (identity == null) {
+            player.sendMessage(ChatColor.RED + "No online or previously known player matches '"
+                    + arguments[1] + "'.");
+            return true;
+        }
+        try {
+            if (banned) {
+                bans.ban(identity);
+                player.sendMessage(ChatColor.GREEN + "Banned " + identity.latestName()
+                        + " from /spawn and reset their progress.");
+            } else {
+                bans.unban(identity);
+                player.sendMessage(ChatColor.GREEN + "Unbanned " + identity.latestName()
+                        + "; they begin with no /spawn progress.");
+            }
+        } catch (IOException exception) {
+            player.sendMessage(ChatColor.RED + "Could not save the " + operation + ".");
+        }
+        return true;
+    }
+
+    private boolean listBans(Player player, String[] arguments) {
+        if (arguments.length > 2) {
+            player.sendMessage(ChatColor.RED + "Usage: /spawnadmin bans [page]");
+            return true;
+        }
+        int page = parsePage(arguments, player);
+        if (page < 1) {
+            return true;
+        }
+        List<BanEntry> entries = bans.listBans();
+        int pages = Math.max(1, (entries.size() + PAGE_SIZE - 1) / PAGE_SIZE);
+        if (page > pages) {
+            player.sendMessage(ChatColor.RED + "Page must be between 1 and " + pages + ".");
+            return true;
+        }
+        player.sendMessage(ChatColor.GOLD + "/spawn bans — page " + page + "/" + pages + ":");
+        int start = (page - 1) * PAGE_SIZE;
+        for (BanEntry entry : entries.subList(start, Math.min(start + PAGE_SIZE, entries.size()))) {
+            player.sendMessage(ChatColor.RED + entry.playerName() + ChatColor.GRAY
+                    + " (" + entry.playerId() + ")");
+        }
+        if (entries.isEmpty()) {
+            player.sendMessage(ChatColor.GRAY + "No players are banned from /spawn.");
+        }
+        return true;
+    }
+
     private static int parsePage(String[] arguments, CommandSender sender) {
         if (arguments.length == 1) {
             return 1;
@@ -246,6 +315,6 @@ final class SpawnAdminCommand implements CommandExecutor, TabCompleter {
 
     private static void sendUsage(CommandSender sender, String label) {
         sender.sendMessage(ChatColor.YELLOW + "Usage: /" + label
-                + " <set|distance|info|grant|remove|access>");
+                + " <set|distance|info|grant|remove|access|ban|unban|bans>");
     }
 }

src/main/java/games/dmg/triggerspawn/SpawnBanService.java

@@ -0,0 +1,42 @@
+package games.dmg.triggerspawn;
+
+import java.io.IOException;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+
+final class SpawnBanService {
+    private final SpawnStateManager stateManager;
+
+    SpawnBanService(SpawnStateManager stateManager) {
+        this.stateManager = stateManager;
+    }
+
+    void ban(PlayerIdentity identity) throws IOException {
+        stateManager.putPlayer(new PlayerState(
+                identity.playerId(),
+                identity.latestName(),
+                Set.of(),
+                Optional.empty(),
+                true,
+                Optional.empty()));
+    }
+
+    void unban(PlayerIdentity identity) throws IOException {
+        stateManager.putPlayer(PlayerState.newPlayer(identity.playerId(), identity.latestName()));
+    }
+
+    boolean isBanned(PlayerIdentity identity) {
+        PlayerState state = stateManager.snapshot().players().get(identity.playerId());
+        return state != null && state.banned();
+    }
+
+    List<BanEntry> listBans() {
+        return stateManager.snapshot().players().values().stream()
+                .filter(PlayerState::banned)
+                .map(player -> new BanEntry(player.playerId(), player.latestName()))
+                .sorted(Comparator.comparing(BanEntry::playerName, String.CASE_INSENSITIVE_ORDER))
+                .toList();
+    }
+}

src/main/java/games/dmg/triggerspawn/TriggerSpawnPlugin.java

@@ -22,6 +22,7 @@ public final class TriggerSpawnPlugin extends JavaPlugin {
             SpawnAdminCommand executor = new SpawnAdminCommand(
                     new SpawnAreaService(stateManager),
                     new AccessService(stateManager, settings),
+                    new SpawnBanService(stateManager),
                     new PlayerResolver(getServer(), stateManager),
                     Clock.systemUTC());
             PluginCommand adminCommand = getCommand("spawnadmin");

src/test/java/games/dmg/triggerspawn/SpawnAdminCommandTest.java

@@ -34,7 +34,11 @@ final class SpawnAdminCommandTest {
         AccessService access = new AccessService(
                 manager, PluginSettings.from(new org.bukkit.configuration.MemoryConfiguration()));
         SpawnAdminCommand command = new SpawnAdminCommand(
-                service, access, mock(PlayerResolver.class), Clock.systemUTC());
+                service,
+                access,
+                new SpawnBanService(manager),
+                mock(PlayerResolver.class),
+                Clock.systemUTC());
         Command bukkitCommand = mock(Command.class);
 
         command.onCommand(player, bukkitCommand, "spawnadmin", new String[] {"set"});

src/test/java/games/dmg/triggerspawn/SpawnBanServiceTest.java

@@ -0,0 +1,50 @@
+package games.dmg.triggerspawn;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.nio.file.Path;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+final class SpawnBanServiceTest {
+    @TempDir
+    Path temporaryDirectory;
+
+    @Test
+    void banClearsAccessAndUnbanRestoresNoProgress() throws Exception {
+        UUID playerId = UUID.randomUUID();
+        Path stateFile = temporaryDirectory.resolve("state.yml");
+        SpawnStateManager manager = SpawnStateManager.load(new YamlSpawnStateRepository(stateFile));
+        manager.putPlayer(new PlayerState(
+                playerId,
+                "Alex",
+                Set.of(BossType.WARDEN),
+                Optional.of(Duration.ofMinutes(10)),
+                false,
+                Optional.of(Instant.now())));
+        SpawnBanService bans = new SpawnBanService(manager);
+        PlayerIdentity identity = new PlayerIdentity(playerId, "Alex");
+
+        bans.ban(identity);
+
+        PlayerState banned = manager.snapshot().players().get(playerId);
+        assertTrue(banned.banned());
+        assertTrue(banned.defeatedBosses().isEmpty());
+        assertTrue(banned.grantedCooldown().isEmpty());
+        assertTrue(banned.lastSpawnUse().isEmpty());
+        assertTrue(bans.listBans().stream().anyMatch(entry -> entry.playerId().equals(playerId)));
+
+        bans.unban(identity);
+
+        PlayerState unbanned = manager.snapshot().players().get(playerId);
+        assertFalse(unbanned.banned());
+        assertTrue(unbanned.defeatedBosses().isEmpty());
+        assertTrue(unbanned.grantedCooldown().isEmpty());
+    }
+}