Сообщения в ПДА (#564)

* add: Сообщения в ПДА

* Search bar and colors in messages on the PDA

Content.Server/_White/Radio/EntitySystems/MessagesServerSystem.cs

@@ -0,0 +1,128 @@
+using System.Linq;
+using Content.Server._White.CartridgeLoader.Cartridges;
+using Content.Server._White.Radio.Components;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Shared._White.CartridgeLoader.Cartridges;
+using Content.Shared.CartridgeLoader;
+using Content.Shared.DeviceNetwork;
+
+
+namespace Content.Server._White.Radio.EntitySystems;
+
+public sealed class MessagesServerSystem : EntitySystem
+{
+    [Dependency] private readonly DeviceNetworkSystem _deviceNetworkSystem = default!;
+    [Dependency] private readonly SingletonDeviceNetServerSystem _singletonServerSystem = default!;
+    [Dependency] private readonly MessagesCartridgeSystem _messagesSystem = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<MessagesServerComponent, DeviceNetworkPacketEvent>(OnPacketReceived);
+        SubscribeLocalEvent<MessagesServerComponent, ComponentInit>(OnInit);
+    }
+
+    private void OnInit(EntityUid uid, MessagesServerComponent component, ComponentInit args)
+    {
+        var query = EntityQueryEnumerator<MessagesCartridgeComponent>();
+
+        while (query.MoveNext(out var entityUid, out var cartridge))
+        {
+            if (!TryComp(entityUid, out CartridgeComponent? cartComponent))
+                continue;
+
+            _messagesSystem.TryGetMessagesUser(cartComponent, out var messagesUser);
+
+            if (cartridge.UserUid == null || messagesUser.Name == Loc.GetString("messages-pda-unknown-name"))
+                continue;
+
+            component.NameDict[cartridge.UserUid.Value] = messagesUser;
+            cartridge.LastServer = uid;
+        }
+    }
+
+    /// <summary>
+    /// Reacts to packets received from clients
+    /// </summary>
+    private void OnPacketReceived(EntityUid uid, MessagesServerComponent component, DeviceNetworkPacketEvent args)
+    {
+        if (!_singletonServerSystem.IsActiveServer(uid))
+            return;
+        if (args.Data.TryGetValue<MessagesUser>(MessagesNetworkKeys.NewUser, out var messagesUser) && args.Data.TryGetValue<int>(MessagesNetworkKeys.UserId, out var userId))
+        {
+            component.NameDict[userId] = messagesUser;
+
+            var packet = new NetworkPayload();
+            _deviceNetworkSystem.QueuePacket(uid, args.SenderAddress, packet);
+        }
+        if (args.Data.TryGetValue<MessagesMessageData>(MessagesNetworkKeys.Message, out var message))
+            SendMessage(uid, component, message);
+    }
+
+    /// <summary>
+    /// Broadcasts a message into the network
+    /// </summary>
+    private void SendMessage(EntityUid uid, MessagesServerComponent component, MessagesMessageData message)
+    {
+        component.Messages.Add(message);
+
+        var packet = new NetworkPayload()
+        {
+            [MessagesNetworkKeys.Message] = message
+        };
+
+        _deviceNetworkSystem.QueuePacket(uid, null, packet);
+    }
+
+    /// <summary>
+    /// Returns user
+    /// </summary>
+    public bool TryGetUserFromDict(EntityUid? uid, int key, out MessagesUser messagesUser)
+    {
+        if (!TryComp(uid, out MessagesServerComponent? component))
+        {
+            messagesUser = new MessagesUser(Loc.GetString("messages-pda-connection-error"), Loc.GetString("messages-pda-unknown-job"), "Specific");
+            return false;
+        }
+        if (component.NameDict.TryGetValue(key, out var keyValue))
+        {
+            messagesUser = keyValue;
+            return true;
+        }
+        messagesUser = new MessagesUser(Loc.GetString("messages-pda-user-missing"), Loc.GetString("messages-pda-unknown-job"), "Specific");
+        return false;
+    }
+
+    /// <summary>
+    /// Returns the name dictionary cache
+    /// </summary>
+    public Dictionary<int, MessagesUser> GetNameDict(EntityUid? uid)
+    {
+        if (!TryComp(uid, out MessagesServerComponent? component))
+            return new Dictionary<int, MessagesUser>();
+        return component.NameDict;
+    }
+
+    /// <summary>
+    /// Returns list of messages between the two users
+    /// </summary>
+    public List<MessagesMessageData> GetMessages(EntityUid? uid, int id1, int id2)
+    {
+        if (!TryComp(uid, out MessagesServerComponent? component))
+            return [];
+        return
+        [
+            ..component.Messages.Where(message =>
+                message.SenderId == id1 && message.ReceiverId == id2 ||
+                message.SenderId == id2 && message.ReceiverId == id1)
+        ];
+    }
+
+}
+
+public static class MessagesNetworkKeys
+{
+    public const string NewUser = "new_user";
+    public const string UserId = "user_id";
+    public const string Message = "message";
+}