From d023d29e54b48dc56dc782ba5c9c57872aef1bab Mon Sep 17 00:00:00 2001
From: Spatison <137375981+Spatison@users.noreply.github.com>
Date: Tue, 6 Aug 2024 16:58:30 +0300
Subject: [PATCH] =?UTF-8?q?=D0=A1=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD?=
 =?UTF-8?q?=D0=B8=D1=8F=20=D0=B2=20=D0=9F=D0=94=D0=90=20(#564)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* add: Сообщения в ПДА

* Search bar and colors in messages on the PDA
---
 Content.Client/PDA/PdaMenu.xaml.cs            |  14 +-
 .../CartridgeLoader/Cartridges/MessagesUi.cs  |  38 +++
 .../Cartridges/MessagesUiFragment.cs          | 129 ++++++++
 .../Cartridges/MessagesUiFragment.xaml        |  17 +
 .../Systems/SingletonDeviceNetServerSystem.cs |   2 +-
 Content.Server/Mind/Commands/RenameCommand.cs |   2 +-
 Content.Server/PDA/PdaSystem.cs               |  16 +-
 .../Station/Systems/StationSpawningSystem.cs  |  11 +-
 .../Cartridges/MessagesCartridgeComponent.cs  |  20 ++
 .../Cartridges/MessagesCartridgeSystem.cs     | 290 ++++++++++++++++++
 .../RandomHumanSystem/RandomHumanSystem.cs    |   2 +-
 .../Components/MessagesServerComponent.cs     |  26 ++
 .../EntitySystems/MessagesServerSystem.cs     | 128 ++++++++
 Content.Shared/PDA/PdaComponent.cs            |   3 +
 Content.Shared/PDA/PdaUpdateState.cs          |   1 +
 .../Cartridges/MessagesUiMessageEvent.cs      |  26 ++
 .../Cartridges/MessagesUiState.cs             |  47 +++
 .../en-US/cartridge-loader/cartridges.ftl     |   1 +
 .../en-US/radio/components/pda-messages.ftl   |   9 +
 .../ru-RU/cartridge-loader/cartridges.ftl     |   1 +
 Resources/Locale/ru-RU/pda/pda-component.ftl  |   2 +-
 .../ru-RU/radio/components/pda-messages.ftl   |   9 +
 .../entities/objects/devices/cartridges.ftl   |   6 +
 .../structures/machines/telecomms.ftl         |   4 +
 .../Device/devicenet_frequencies.yml          |  20 ++
 .../Entities/Objects/Devices/cartridges.yml   |  48 +++
 .../Entities/Objects/Devices/pda.yml          |   4 +
 .../Structures/Machines/telecomms.yml         |  66 ++++
 28 files changed, 929 insertions(+), 13 deletions(-)
 create mode 100644 Content.Client/_White/CartridgeLoader/Cartridges/MessagesUi.cs
 create mode 100644 Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.cs
 create mode 100644 Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.xaml
 create mode 100644 Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeComponent.cs
 create mode 100644 Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeSystem.cs
 create mode 100644 Content.Server/_White/Radio/Components/MessagesServerComponent.cs
 create mode 100644 Content.Server/_White/Radio/EntitySystems/MessagesServerSystem.cs
 create mode 100644 Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiMessageEvent.cs
 create mode 100644 Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiState.cs
 create mode 100644 Resources/Locale/en-US/radio/components/pda-messages.ftl
 create mode 100644 Resources/Locale/ru-RU/radio/components/pda-messages.ftl
 create mode 100644 Resources/Locale/ru-RU/ss14-ru/prototypes/entities/structures/machines/telecomms.ftl

diff --git a/Content.Client/PDA/PdaMenu.xaml.cs b/Content.Client/PDA/PdaMenu.xaml.cs
index 630861d084..c62acd0fc5 100644
--- a/Content.Client/PDA/PdaMenu.xaml.cs
+++ b/Content.Client/PDA/PdaMenu.xaml.cs
@@ -26,13 +26,13 @@ namespace Content.Client.PDA
         public const int ProgramContentView = 3;
 
 
-        private string _pdaOwner = Loc.GetString("comp-pda-ui-unknown");
+        private string _pdaOwnerName = Loc.GetString("comp-pda-ui-unknown");
         private string _owner = Loc.GetString("comp-pda-ui-unknown");
         private string _jobTitle = Loc.GetString("comp-pda-ui-unassigned");
         private string _stationName = Loc.GetString("comp-pda-ui-unknown");
         private string _alertLevel = Loc.GetString("comp-pda-ui-unknown");
         private string _instructions = Loc.GetString("comp-pda-ui-unknown");
-        
+
 
         private int _currentView;
 
@@ -96,7 +96,7 @@ namespace Content.Client.PDA
 
             PdaOwnerButton.OnPressed += _ =>
             {
-                _clipboard.SetText(_pdaOwner);
+                _clipboard.SetText(_pdaOwnerName);
             };
 
             IdInfoButton.OnPressed += _ =>
@@ -125,7 +125,7 @@ namespace Content.Client.PDA
                 _clipboard.SetText(_instructions);
             };
 
-            
+
 
 
             HideAllViews();
@@ -138,9 +138,9 @@ namespace Content.Client.PDA
 
             if (state.PdaOwnerInfo.ActualOwnerName != null)
             {
-                _pdaOwner = state.PdaOwnerInfo.ActualOwnerName;
+                _pdaOwnerName = state.PdaOwnerInfo.ActualOwnerName;
                 PdaOwnerLabel.SetMarkup(Loc.GetString("comp-pda-ui-owner",
-                    ("actualOwnerName", _pdaOwner)));
+                    ("actualOwnerName", _pdaOwnerName)));
             }
 
 
@@ -160,7 +160,7 @@ namespace Content.Client.PDA
             _stationName = state.StationName ?? Loc.GetString("comp-pda-ui-unknown");
             StationNameLabel.SetMarkup(Loc.GetString("comp-pda-ui-station",
                 ("station", _stationName)));
-            
+
 
             var stationTime = _gameTiming.CurTime.Subtract(_gameTicker.RoundStartTimeSpan);
 
diff --git a/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUi.cs b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUi.cs
new file mode 100644
index 0000000000..7dcb845527
--- /dev/null
+++ b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUi.cs
@@ -0,0 +1,38 @@
+using Content.Client.UserInterface.Fragments;
+using Content.Shared._White.CartridgeLoader.Cartridges;
+using Content.Shared.CartridgeLoader;
+using Robust.Client.UserInterface;
+
+namespace Content.Client._White.CartridgeLoader.Cartridges;
+
+public sealed partial class MessagesUi : UIFragment
+{
+    private MessagesUiFragment _fragment;
+
+    public override Control GetUIFragmentRoot()
+    {
+        return _fragment;
+    }
+
+    public override void Setup(BoundUserInterface userInterface, EntityUid? fragmentOwner)
+    {
+        _fragment = new MessagesUiFragment();
+        _fragment.OnMessageSent += note => SendMessagesMessage(MessagesUiAction.Send, note, null, userInterface);
+        _fragment.OnButtonPressed += userUid => SendMessagesMessage(MessagesUiAction.ChangeChat, null, userUid, userInterface);
+    }
+
+    public override void UpdateState(BoundUserInterfaceState state)
+    {
+        if (state is not MessagesUiState messagesState)
+            return;
+
+        _fragment.UpdateState(messagesState.Mode, messagesState.Contents, messagesState.Name);
+    }
+
+    private void SendMessagesMessage(MessagesUiAction action, string? stringInput, int? uidInput, BoundUserInterface userInterface)
+    {
+        var messagesMessage = new MessagesUiMessageEvent(action, stringInput, uidInput);
+        var message = new CartridgeUiMessage(messagesMessage);
+        userInterface.SendMessage(message);
+    }
+}
diff --git a/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.cs b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.cs
new file mode 100644
index 0000000000..dbadc56078
--- /dev/null
+++ b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.cs
@@ -0,0 +1,129 @@
+using System.Numerics;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+using Content.Shared._White.CartridgeLoader.Cartridges;
+using Content.Shared.Roles;
+using Robust.Shared.Prototypes;
+
+namespace Content.Client._White.CartridgeLoader.Cartridges;
+
+[GenerateTypedNameReferences]
+public sealed partial class MessagesUiFragment : BoxContainer
+{
+    public event Action<string>? OnMessageSent;
+    public event Action<int?>? OnButtonPressed;
+
+    private string _searchText = string.Empty;
+
+    public MessagesUiFragment()
+    {
+        RobustXamlLoader.Load(this);
+        Input.OnTextEntered += _ =>
+        {
+            if (!string.IsNullOrEmpty(Input.Text))
+                OnMessageSent?.Invoke(Input.Text);
+            Input.Clear();
+        };
+
+        BackButton.OnPressed += _ => OnButtonPressed?.Invoke(null);
+        SearchBar.OnTextChanged += OnSearchTextChanged;
+
+        UpdateState(MessagesUiStateMode.UserList, [], null);
+    }
+
+    public void UpdateState(MessagesUiStateMode mode, List<(MessagesUser, int?)>? contents, string? name)
+    {
+        MessageContainer.DisposeAllChildren();
+        Input.Orphan();
+        BackButton.Orphan();
+
+        SearchBar.Visible = false;
+
+        if (contents == null)
+            return;
+
+        if (mode == MessagesUiStateMode.Chat)
+        {
+            HeaderLabel.Text = name;
+
+            foreach (var (senderName, message) in contents)
+            {
+                AddNote($"{senderName.Name} {message}");
+            }
+
+            OverContainer.AddChild(Input);
+            HeaderBox.AddChild(BackButton);
+            BackButton.SetPositionInParent(0);
+        }
+        else if (mode == MessagesUiStateMode.Error)
+        {
+            HeaderLabel.Text = Loc.GetString("messages-pda-error-header");
+            AddNote(Loc.GetString("messages-pda-error-message"));
+        }
+        else
+        {
+            SearchBar.Visible = true;
+            HeaderLabel.Text = Loc.GetString("messages-pda-chat-choice");
+            foreach (var (messagesUser, userUid) in contents)
+            {
+                AddButton(userUid, messagesUser.Name + ", " +  messagesUser.Job, messagesUser.Department);
+            }
+        }
+    }
+
+    ///<summary>
+    /// Adding a button for selecting a chat
+    ///</summary>
+    private void AddButton(int? userUid, string userName, string departmentId)
+    {
+        var styleClass = IoCManager.Resolve<IPrototypeManager>().Index<DepartmentPrototype>(departmentId).ButtonStyle;
+
+        var button = new Button
+        {
+            Text = userName,
+            HorizontalExpand = true,
+            ClipText = true,
+            StyleClasses = { styleClass },
+            MinWidth = 60
+        };
+        button.OnPressed += _ => OnButtonPressed?.Invoke(userUid);
+        MessageContainer.AddChild(button);
+    }
+
+    ///<summary>
+    /// Adding a text label to the message container
+    ///</summary>
+    private void AddNote(string note)
+    {
+        MessageContainer.AddChild(new Label
+        {
+            Text = note,
+            HorizontalExpand = true,
+            ClipText = false
+        });
+    }
+
+    private bool ButtonIsVisible(Button button)
+    {
+        return string.IsNullOrEmpty(_searchText) || button.Text == null || button.Text.Contains(_searchText, StringComparison.OrdinalIgnoreCase);
+    }
+
+    private void UpdateVisibleButtons()
+    {
+        foreach (var child in MessageContainer.Children)
+        {
+            if (child is Button button)
+                button.Visible = ButtonIsVisible(button);
+        }
+    }
+
+    private void OnSearchTextChanged(LineEdit.LineEditEventArgs args)
+    {
+        _searchText = args.Text;
+
+        UpdateVisibleButtons();
+        // Reset scroll bar so they can see the relevant results.
+        MessagesScroll.SetScrollValue(Vector2.Zero);
+    }
+}
diff --git a/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.xaml b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.xaml
new file mode 100644
index 0000000000..2871d8693b
--- /dev/null
+++ b/Content.Client/_White/CartridgeLoader/Cartridges/MessagesUiFragment.xaml
@@ -0,0 +1,17 @@
+<cartridges1:MessagesUiFragment
+    xmlns="https://spacestation14.io"
+    xmlns:cartridges1="clr-namespace:Content.Client._White.CartridgeLoader.Cartridges"
+    Margin="1 0 2 0" Orientation="Vertical" HorizontalExpand="True" VerticalExpand="True">
+    <PanelContainer StyleClasses="BackgroundDark"/>
+    <BoxContainer Name="OverContainer" Orientation="Vertical" HorizontalExpand="True" VerticalExpand="True">
+        <BoxContainer Name="HeaderBox">
+            <Button Name="BackButton" Text="{Loc 'messages-pda-ui-back'}" HorizontalExpand="False"/>
+            <Label Name="HeaderLabel"/>
+        </BoxContainer>
+        <LineEdit Name="SearchBar" PlaceHolder="Search" HorizontalExpand="True" Margin="0 4" />
+        <ScrollContainer Name="MessagesScroll" HorizontalExpand="True" VerticalExpand="True" HScrollEnabled="True">
+            <BoxContainer Orientation="Vertical" Name="MessageContainer" HorizontalExpand="True" VerticalExpand="True"/>
+        </ScrollContainer>
+        <LineEdit Name="Input" HorizontalExpand="True" SetHeight="32"/>
+    </BoxContainer>
+</cartridges1:MessagesUiFragment>
diff --git a/Content.Server/DeviceNetwork/Systems/SingletonDeviceNetServerSystem.cs b/Content.Server/DeviceNetwork/Systems/SingletonDeviceNetServerSystem.cs
index cdc083feac..5fdcad7697 100644
--- a/Content.Server/DeviceNetwork/Systems/SingletonDeviceNetServerSystem.cs
+++ b/Content.Server/DeviceNetwork/Systems/SingletonDeviceNetServerSystem.cs
@@ -56,7 +56,7 @@ public sealed class SingletonDeviceNetServerSystem : EntitySystem
 
             if (!server.Available)
             {
-                DisconnectServer(uid,server, device);
+                DisconnectServer(uid, server, device);
                 continue;
             }
 
diff --git a/Content.Server/Mind/Commands/RenameCommand.cs b/Content.Server/Mind/Commands/RenameCommand.cs
index 834453fb19..ff58489475 100644
--- a/Content.Server/Mind/Commands/RenameCommand.cs
+++ b/Content.Server/Mind/Commands/RenameCommand.cs
@@ -88,7 +88,7 @@ public sealed class RenameCommand : IConsoleCommand
             {
                 if (pda.OwnerName == oldName)
                 {
-                    pdaSystem.SetOwner(uid, pda, name);
+                    pdaSystem.SetOwnerName(uid, pda, name);
                 }
             }
         }
diff --git a/Content.Server/PDA/PdaSystem.cs b/Content.Server/PDA/PdaSystem.cs
index a343607196..7643030352 100644
--- a/Content.Server/PDA/PdaSystem.cs
+++ b/Content.Server/PDA/PdaSystem.cs
@@ -14,6 +14,7 @@ using Content.Shared.CartridgeLoader;
 using Content.Shared.Chat;
 using Content.Shared.Light.Components;
 using Content.Shared.PDA;
+using Content.Shared.Roles;
 using Robust.Server.Containers;
 using Robust.Server.GameObjects;
 using Robust.Shared.Containers;
@@ -90,12 +91,24 @@ namespace Content.Server.PDA
             UpdatePdaUi(uid, pda);
         }
 
-        public void SetOwner(EntityUid uid, PdaComponent pda, string ownerName)
+        public void SetOwnerName(EntityUid uid, PdaComponent pda, string ownerName)
         {
             pda.OwnerName = ownerName;
             UpdatePdaUi(uid, pda);
         }
 
+        public void SetOwnerJob(EntityUid uid, PdaComponent pda, string ownerJob)
+        {
+            pda.OwnerJob = ownerJob;
+            UpdatePdaUi(uid, pda);
+        }
+
+        public void SetOwnerDepartment(EntityUid uid, PdaComponent pda, string ownerDepartment)
+        {
+            pda.OwnerDepartment = ownerDepartment;
+            UpdatePdaUi(uid, pda);
+        }
+
         private void OnStationRenamed(StationRenamedEvent ev)
         {
             UpdateAllPdaUisOnStation();
@@ -172,6 +185,7 @@ namespace Content.Server.PDA
                 new PdaIdInfoText
                 {
                     ActualOwnerName = pda.OwnerName,
+                    ActualOwnerJob = pda.OwnerJob, // WD EDIT
                     IdOwner = id?.FullName,
                     JobTitle = id?.JobTitle,
                     StationAlertLevel = pda.StationAlertLevel,
diff --git a/Content.Server/Station/Systems/StationSpawningSystem.cs b/Content.Server/Station/Systems/StationSpawningSystem.cs
index eb80cc8751..e03016fef2 100644
--- a/Content.Server/Station/Systems/StationSpawningSystem.cs
+++ b/Content.Server/Station/Systems/StationSpawningSystem.cs
@@ -12,6 +12,7 @@ using Content.Shared.Access.Systems;
 using Content.Shared.CCVar;
 using Content.Shared.Clothing;
 using Content.Shared.Humanoid;
+using Content.Server.Roles.Jobs;
 using Content.Shared.Humanoid.Prototypes;
 using Content.Shared.PDA;
 using Content.Shared.Preferences;
@@ -49,6 +50,7 @@ public sealed class StationSpawningSystem : SharedStationSpawningSystem
     [Dependency] private readonly SharedAccessSystem _accessSystem = default!;
     [Dependency] private readonly IdentitySystem _identity = default!;
     [Dependency] private readonly MetaDataSystem _metaSystem = default!;
+    [Dependency] private readonly JobSystem _jobs = default!; // WD EDIT
 
     [Dependency] private readonly ArrivalsSystem _arrivalsSystem = default!;
     [Dependency] private readonly ContainerSpawnPointSystem _containerSpawnPointSystem = default!;
@@ -337,7 +339,14 @@ public sealed class StationSpawningSystem : SharedStationSpawningSystem
         _accessSystem.SetAccessToJob(cardId, jobPrototype, extendedAccess);
 
         if (pdaComponent != null)
-            _pdaSystem.SetOwner(idUid.Value, pdaComponent, characterName);
+        {
+            _pdaSystem.SetOwnerName(idUid.Value, pdaComponent, characterName);
+            //WD EDIT START
+            _pdaSystem.SetOwnerJob(idUid.Value, pdaComponent, jobPrototype.LocalizedName);
+            _jobs.TryGetDepartment(jobPrototype.ID, out var department);
+            _pdaSystem.SetOwnerDepartment(idUid.Value, pdaComponent, department?.ID ?? "Specific");
+            //WD EDIT END
+        }
     }
 
 
diff --git a/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeComponent.cs b/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeComponent.cs
new file mode 100644
index 0000000000..c933be6b93
--- /dev/null
+++ b/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeComponent.cs
@@ -0,0 +1,20 @@
+namespace Content.Server._White.CartridgeLoader.Cartridges;
+
+[RegisterComponent]
+public sealed partial class MessagesCartridgeComponent : Component
+{
+    /// <summary>
+    /// The component of the last contacted server
+    /// </summary>
+    [DataField]
+    public EntityUid? LastServer;
+
+    /// <summary>
+    /// The message system user id of the crew the user is chatting with
+    /// </summary>
+    [DataField]
+    public int? ChatUid;
+
+    [DataField]
+    public int? UserUid;
+}
diff --git a/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeSystem.cs b/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeSystem.cs
new file mode 100644
index 0000000000..cbeca052bd
--- /dev/null
+++ b/Content.Server/_White/CartridgeLoader/Cartridges/MessagesCartridgeSystem.cs
@@ -0,0 +1,290 @@
+using Content.Server._White.Radio.Components;
+using Content.Server._White.Radio.EntitySystems;
+using Content.Server.Administration.Commands;
+using Content.Server.CartridgeLoader;
+using Content.Shared.CartridgeLoader;
+using Content.Shared.PDA;
+using Robust.Shared.Map;
+using Content.Server.GameTicking;
+using Robust.Shared.Timing;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Shared.DeviceNetwork;
+using Content.Server.Station.Systems;
+using Content.Shared._White.CartridgeLoader.Cartridges;
+using Content.Shared.Access.Components;
+using Content.Shared.Roles;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server._White.CartridgeLoader.Cartridges;
+
+public sealed class MessagesCartridgeSystem : EntitySystem
+{
+    [Dependency] private readonly CartridgeLoaderSystem _cartridgeLoaderSystem = default!;
+    [Dependency] private readonly IGameTiming _gameTiming = default!;
+    [Dependency] private readonly GameTicker _gameTicker = default!;
+    [Dependency] private readonly MessagesServerSystem _messagesServerSystem = default!;
+    [Dependency] private readonly DeviceNetworkSystem _deviceNetworkSystem = default!;
+    [Dependency] private readonly SingletonDeviceNetServerSystem _singletonServerSystem = default!;
+    [Dependency] private readonly StationSystem _stationSystem = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<MessagesCartridgeComponent, CartridgeMessageEvent>(OnUiMessage);
+        SubscribeLocalEvent<MessagesCartridgeComponent, CartridgeUiReadyEvent>(OnUiReady);
+        SubscribeLocalEvent<MessagesCartridgeComponent, DeviceNetworkPacketEvent>(OnPacketReceived);
+        SubscribeLocalEvent<MessagesCartridgeComponent, CartridgeActivatedEvent>(OnCartActivation);
+        SubscribeLocalEvent<MessagesCartridgeComponent, CartridgeDeactivatedEvent>(OnCartDeactivation);
+        SubscribeLocalEvent<MessagesCartridgeComponent, CartridgeAddedEvent>(OnCartInsertion);
+        SubscribeLocalEvent<MessagesCartridgeComponent, ComponentInit>(OnInit);
+        SubscribeLocalEvent<MessagesCartridgeComponent, ComponentRemove>(OnRemove);
+    }
+
+    private void OnInit(EntityUid uid, MessagesCartridgeComponent component, ComponentInit args)
+    {
+        var stationId = _stationSystem.GetOwningStation(uid);
+        if (stationId.HasValue &&
+            _singletonServerSystem.TryGetActiveServerAddress<MessagesServerComponent>(stationId.Value,
+                out var address) && TryComp(uid, out CartridgeComponent? cartComponent))
+        {
+            SendName(uid, component, cartComponent, address);
+            component.UserUid = cartComponent.LoaderUid?.Id;
+        }
+    }
+
+    private void OnRemove(EntityUid uid, MessagesCartridgeComponent component, ComponentRemove args)
+    {
+        if (component.LastServer == null || !TryComp<MessagesServerComponent>(component.LastServer, out var messagesServerComponent) || component.UserUid == null)
+            return;
+
+        messagesServerComponent.NameDict.Remove(component.UserUid.Value);
+    }
+
+    /// <summary>
+    /// This gets called when the ui fragment needs to be updated for the first time after activating
+    /// </summary>
+    private void OnUiReady(EntityUid uid, MessagesCartridgeComponent component, CartridgeUiReadyEvent args)
+    {
+        var stationId = _stationSystem.GetOwningStation(uid);
+        if (stationId.HasValue && _singletonServerSystem.TryGetActiveServerAddress<MessagesServerComponent>(stationId.Value, out var address) && TryComp(uid, out CartridgeComponent? cartComponent))
+            SendName(uid, component, cartComponent, address);
+        UpdateUiState(uid, component);
+    }
+
+    /// <summary>
+    /// The ui messages received here get wrapped by a CartridgeMessageEvent and are relayed from the <see cref="CartridgeLoaderSystem"/>
+    /// </summary>
+    /// <remarks>
+    /// The cartridge specific ui message event needs to inherit from the CartridgeMessageEvent
+    /// </remarks>
+    private void OnUiMessage(EntityUid uid, MessagesCartridgeComponent component, CartridgeMessageEvent args)
+    {
+        if (args is not MessagesUiMessageEvent messageEvent)
+            return;
+
+        if (messageEvent.Action == MessagesUiAction.Send && TryComp(uid, out CartridgeComponent? cartComponent) && component.UserUid is { } userId && component.ChatUid != null && messageEvent.StringInput != null)
+        {
+            var stationId = _stationSystem.GetOwningStation(uid);
+            if (!stationId.HasValue)
+                return;
+            MessagesMessageData messageData = new()
+            {
+                SenderId = userId,
+                ReceiverId = component.ChatUid.Value,
+                Content = messageEvent.StringInput,
+                Time = _gameTiming.CurTime.Subtract(_gameTicker.RoundStartTimeSpan)
+            };
+            var packet = new NetworkPayload()
+            {
+                [MessagesNetworkKeys.Message] = messageData
+            };
+            _singletonServerSystem.TryGetActiveServerAddress<MessagesServerComponent>(stationId.Value, out var address);
+            _deviceNetworkSystem.QueuePacket(uid, address, packet);
+        }
+        else
+        {
+            if (messageEvent.Action == MessagesUiAction.ChangeChat)
+                component.ChatUid = messageEvent.TargetChatUid;
+        }
+
+        UpdateUiState(uid, component);
+    }
+
+    /// <summary>
+    /// On cart insertion, register as background process.
+    /// </summary>
+    private void OnCartInsertion(EntityUid uid, MessagesCartridgeComponent component, CartridgeAddedEvent args)
+    {
+        _cartridgeLoaderSystem.RegisterBackgroundProgram(args.Loader, uid);
+        component.UserUid = args.Loader.Id;
+    }
+
+    /// <summary>
+    /// On cartridge activation, connect to messages network.
+    /// </summary>
+    private void OnCartActivation(EntityUid uid, MessagesCartridgeComponent component, CartridgeActivatedEvent args)
+    {
+        _deviceNetworkSystem.ConnectDevice(uid);
+        var stationId = _stationSystem.GetOwningStation(uid);
+        if (stationId.HasValue && _singletonServerSystem.TryGetActiveServerAddress<MessagesServerComponent>(stationId.Value, out var address) && TryComp(uid, out CartridgeComponent? cartComponent))
+            SendName(uid, component, cartComponent, address);
+    }
+
+    /// <summary>
+    /// On cartridge deactivation, disconnect from messages network.
+    /// </summary>
+    private void OnCartDeactivation(EntityUid uid, MessagesCartridgeComponent component, CartridgeDeactivatedEvent args)
+    {
+        _deviceNetworkSystem.DisconnectDevice(uid, null);
+    }
+
+    /// <summary>
+    /// React and respond to packets from the server
+    /// </summary>
+    private void OnPacketReceived(EntityUid uid, MessagesCartridgeComponent component, DeviceNetworkPacketEvent args)
+    {
+        if (!TryComp(uid, out CartridgeComponent? cartComponent))
+            return;
+        component.LastServer = args.Sender;
+        if (args.Data.TryGetValue<MessagesMessageData>(MessagesNetworkKeys.Message, out var message) && cartComponent.LoaderUid != null)
+        {
+            if (message.ReceiverId == cartComponent.LoaderUid.Value.Id)
+            {
+                TryGetName(message.SenderId, component, out var name);
+
+                var subtitleString = Loc.GetString("messages-pda-notification-header", ("name", name));
+
+                _cartridgeLoaderSystem.SendNotification(
+                    cartComponent.LoaderUid.Value,
+                    subtitleString,
+                    message.Content);
+            }
+        }
+
+        UpdateUiState(uid, component);
+
+    }
+
+    /// <summary>
+    /// Updates the user's name in the storage component.
+    /// </summary>
+    private void SendName(EntityUid uid, MessagesCartridgeComponent component, CartridgeComponent cartComponent, string? address)
+    {
+        TryGetMessagesUser(cartComponent, out var messagesUser);
+
+        var packet = new NetworkPayload()
+        {
+            [MessagesNetworkKeys.UserId] = component.UserUid,
+            [MessagesNetworkKeys.NewUser] = messagesUser
+        };
+        _deviceNetworkSystem.QueuePacket(uid, address, packet);
+    }
+
+    /// <summary>
+    /// Retrieves the name of the given user from the last contacted server
+    /// </summary>
+    private bool TryGetName(int key, MessagesCartridgeComponent component, out string name)
+    {
+        if (component.LastServer != null && _messagesServerSystem.TryGetUserFromDict(component.LastServer, key, out var messagesUser))
+        {
+            name = messagesUser.Name;
+            return true;
+        }
+
+        name = Loc.GetString("messages-pda-connection-error");
+        return false;
+    }
+
+    /// <summary>
+    /// Returns the user's name, job title and job department
+    /// </summary>
+    public bool TryGetMessagesUser(CartridgeComponent component, out MessagesUser messagesUser)
+    {
+        var pda = component.LoaderUid;
+        if (pda == null)
+        {
+            messagesUser = new MessagesUser(Loc.GetString("messages-pda-unknown-name"), Loc.GetString("messages-pda-unknown-job"), "Specific");
+            return false;
+        }
+
+        var pdaComponent = CompOrNull<PdaComponent>(pda);
+        if (pdaComponent?.OwnerName == null)
+        {
+            messagesUser = new MessagesUser(Loc.GetString("messages-pda-unknown-name"), Loc.GetString("messages-pda-unknown-job"), "Specific");
+            return false;
+        }
+
+        messagesUser = new MessagesUser(pdaComponent.OwnerName, pdaComponent.OwnerJob ?? Loc.GetString("messages-pda-unknown-job"), pdaComponent.OwnerDepartment ?? "Specific");
+        return true;
+    }
+
+    private void UpdateUiState(EntityUid uid, MessagesCartridgeComponent? component = null)
+    {
+        if (!Resolve(uid, ref component))
+            return;
+        if (!TryComp(uid, out CartridgeComponent? cartComponent))
+            return;
+        if (cartComponent.LoaderUid == null)
+            return;
+        var loaderUid = cartComponent.LoaderUid.Value;
+        MessagesUiState state;
+        MapId mapId = Transform(uid).MapID;
+        int? currentUserId = component.UserUid;
+        if (currentUserId == null || component.LastServer == null)
+        {
+            state = new MessagesUiState(MessagesUiStateMode.Error, [], null);
+            _cartridgeLoaderSystem.UpdateCartridgeUiState(loaderUid, state);
+            return;
+        }
+        if (component.ChatUid == null) //if no chat is loaded, list users
+        {
+            List<(MessagesUser, int?)> userList = [];
+
+            var nameDict = _messagesServerSystem.GetNameDict(component.LastServer);
+
+            foreach (var nameEntry in nameDict.Keys)
+            {
+                if (nameEntry == currentUserId)
+                    continue;
+                userList.Add((nameDict[nameEntry], nameEntry));
+            }
+
+            state = new MessagesUiState(MessagesUiStateMode.UserList, userList, null);
+        }
+        else
+        {
+            List<MessagesMessageData> messageList = []; //Else, list messages from the current chat
+
+            foreach (var message in _messagesServerSystem.GetMessages(component.LastServer, component.ChatUid.Value, currentUserId.Value))
+            {
+                if (message.SenderId == component.ChatUid && message.ReceiverId == currentUserId || message.ReceiverId == component.ChatUid && message.SenderId == currentUserId)
+                {
+                    messageList.Add(message);
+                }
+            }
+
+            messageList.Sort
+            (
+                delegate (MessagesMessageData a, MessagesMessageData b)
+                {
+                    return TimeSpan.Compare(a.Time, b.Time);
+                }
+            );
+
+            List<(MessagesUser, int?)> formattedMessageList = [];
+
+            foreach (var message in messageList)
+            {
+                TryGetName(message.SenderId, component, out var name);
+                var stationTime = message.Time.Subtract(_gameTicker.RoundStartTimeSpan);
+                var content = $"{stationTime.ToString("\\[hh\\:mm\\:ss\\]")} {name}: {message.Content}";
+                formattedMessageList.Add((new MessagesUser(content, Loc.GetString("messages-pda-unknown-job"), "Specific"), null));
+            }
+
+            TryGetName(component.ChatUid.Value, component, out var user);
+            state = new MessagesUiState(MessagesUiStateMode.Chat, formattedMessageList, user);
+        }
+        _cartridgeLoaderSystem.UpdateCartridgeUiState(loaderUid, state);
+    }
+}
diff --git a/Content.Server/_White/Other/RandomHumanSystem/RandomHumanSystem.cs b/Content.Server/_White/Other/RandomHumanSystem/RandomHumanSystem.cs
index c1bb3d293b..7e5598bb26 100644
--- a/Content.Server/_White/Other/RandomHumanSystem/RandomHumanSystem.cs
+++ b/Content.Server/_White/Other/RandomHumanSystem/RandomHumanSystem.cs
@@ -58,7 +58,7 @@ public sealed class RandomHumanSystem : EntitySystem
         var cardId = pdaComponent.ContainedId.Value;
 
         _card.TryChangeFullName(cardId, newProfile.Name, card);
-        _pda.SetOwner(idUid.Value, pdaComponent, newProfile.Name);
+        _pda.SetOwnerName(idUid.Value, pdaComponent, newProfile.Name);
 
         if (EntityManager.TryGetComponent(cardId, out StationRecordKeyStorageComponent? keyStorage)
             && keyStorage.Key is { } key)
diff --git a/Content.Server/_White/Radio/Components/MessagesServerComponent.cs b/Content.Server/_White/Radio/Components/MessagesServerComponent.cs
new file mode 100644
index 0000000000..f92b4bdf6a
--- /dev/null
+++ b/Content.Server/_White/Radio/Components/MessagesServerComponent.cs
@@ -0,0 +1,26 @@
+using Content.Server.Power.Components;
+using Content.Shared._White.CartridgeLoader.Cartridges;
+
+
+namespace Content.Server._White.Radio.Components;
+
+/// <summary>
+/// Entities with <see cref="MessagesServerComponent"/> are needed to transmit messages using PDAs.
+/// They also need to be powered by <see cref="ApcPowerReceiverComponent"/>
+/// in order for them to work on the same map as server.
+/// </summary>
+[RegisterComponent]
+public sealed partial class MessagesServerComponent : Component
+{
+    /// <summary>
+    /// The list of messages cached by the server.
+    /// </summary>
+    [DataField]
+    public List<MessagesMessageData> Messages = [];
+
+    /// <summary>
+    /// Dictionary translating uids to readable names
+    /// </summary>
+    [DataField]
+    public Dictionary<int, MessagesUser> NameDict = [];
+}
diff --git a/Content.Server/_White/Radio/EntitySystems/MessagesServerSystem.cs b/Content.Server/_White/Radio/EntitySystems/MessagesServerSystem.cs
new file mode 100644
index 0000000000..8b1dd6a3ef
--- /dev/null
+++ b/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";
+}
diff --git a/Content.Shared/PDA/PdaComponent.cs b/Content.Shared/PDA/PdaComponent.cs
index d4cfc4fc0d..7a65e9df0e 100644
--- a/Content.Shared/PDA/PdaComponent.cs
+++ b/Content.Shared/PDA/PdaComponent.cs
@@ -2,6 +2,7 @@ using Robust.Shared.Prototypes;
 using Robust.Shared.GameStates;
 using Content.Shared.Access.Components;
 using Content.Shared.Containers.ItemSlots;
+using Content.Shared.Roles;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
 
 namespace Content.Shared.PDA
@@ -37,6 +38,8 @@ namespace Content.Shared.PDA
         [ViewVariables] public bool FlashlightOn;
 
         [ViewVariables(VVAccess.ReadWrite)] public string? OwnerName;
+        [ViewVariables(VVAccess.ReadWrite)] public string? OwnerJob; // WD EDIT
+        [ViewVariables(VVAccess.ReadWrite)] public string? OwnerDepartment; // WD EDIT
         [ViewVariables] public string? StationName;
         [ViewVariables] public string? StationAlertLevel;
         [ViewVariables] public Color StationAlertColor = Color.White;
diff --git a/Content.Shared/PDA/PdaUpdateState.cs b/Content.Shared/PDA/PdaUpdateState.cs
index cf217ed9b2..7ec6b4cd10 100644
--- a/Content.Shared/PDA/PdaUpdateState.cs
+++ b/Content.Shared/PDA/PdaUpdateState.cs
@@ -45,6 +45,7 @@ namespace Content.Shared.PDA
     public struct PdaIdInfoText
     {
         public string? ActualOwnerName;
+        public string? ActualOwnerJob; // WD EDIT
         public string? IdOwner;
         public string? JobTitle;
         public string? StationAlertLevel;
diff --git a/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiMessageEvent.cs b/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiMessageEvent.cs
new file mode 100644
index 0000000000..a80620be5a
--- /dev/null
+++ b/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiMessageEvent.cs
@@ -0,0 +1,26 @@
+using Content.Shared.CartridgeLoader;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared._White.CartridgeLoader.Cartridges;
+
+[Serializable, NetSerializable]
+public sealed class MessagesUiMessageEvent : CartridgeMessageEvent
+{
+    public readonly MessagesUiAction Action;
+    public readonly int? TargetChatUid;
+    public readonly string? StringInput;
+
+    public MessagesUiMessageEvent(MessagesUiAction action, string? stringInput, int? targetChatUid)
+    {
+        Action = action;
+        TargetChatUid = targetChatUid;
+        StringInput = stringInput;
+    }
+}
+
+[Serializable, NetSerializable]
+public enum MessagesUiAction : byte
+{
+    Send,
+    ChangeChat
+}
diff --git a/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiState.cs b/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiState.cs
new file mode 100644
index 0000000000..532e906bdf
--- /dev/null
+++ b/Content.Shared/_White/CartridgeLoader/Cartridges/MessagesUiState.cs
@@ -0,0 +1,47 @@
+using Robust.Shared.Serialization;
+
+namespace Content.Shared._White.CartridgeLoader.Cartridges;
+
+///<summary>
+/// The state of the messages app interface.
+/// Mode switches whether the UI should display a list of other users or a particular chat.
+/// Contents contains either the names of users and their ids in the messages system or simply a list of message strings.
+///</summary>
+[Serializable, NetSerializable]
+public sealed class MessagesUiState(MessagesUiStateMode mode, List<(MessagesUser, int?)> contents, string? name = null) : BoundUserInterfaceState
+{
+    public List<(MessagesUser, int?)>? Contents = contents;
+    public MessagesUiStateMode Mode = mode;
+    public string? Name = name;
+}
+
+///<summary>
+/// Enum representing the modes the program's UI can be in
+///</summary>
+[Serializable, NetSerializable]
+public enum MessagesUiStateMode : byte
+{
+    UserList,
+    Chat,
+    Error
+}
+
+///<summary>
+/// Data of a single message in the system, containing the ids of the sender and recipient, the text content and the time it was sent.
+///</summary>
+[Serializable, NetSerializable]
+public struct MessagesMessageData
+{
+    public int SenderId;
+    public int ReceiverId;
+    public string Content;
+    public TimeSpan Time;
+}
+
+[Serializable]
+public sealed class MessagesUser(string name, string job, string department)
+{
+    public string Name = name;
+    public string Job = job;
+    public string Department = department;
+}
diff --git a/Resources/Locale/en-US/cartridge-loader/cartridges.ftl b/Resources/Locale/en-US/cartridge-loader/cartridges.ftl
index f5cda2f2a1..0cd0e0f47d 100644
--- a/Resources/Locale/en-US/cartridge-loader/cartridges.ftl
+++ b/Resources/Locale/en-US/cartridge-loader/cartridges.ftl
@@ -3,6 +3,7 @@ device-pda-slot-component-slot-name-cartridge = Cartridge
 default-program-name = Program
 notekeeper-program-name = Notekeeper
 news-read-program-name = Station news
+messages-program-name = Messages
 
 crew-manifest-program-name = Crew manifest
 crew-manifest-cartridge-loading = Loading ...
diff --git a/Resources/Locale/en-US/radio/components/pda-messages.ftl b/Resources/Locale/en-US/radio/components/pda-messages.ftl
new file mode 100644
index 0000000000..403e7f24e2
--- /dev/null
+++ b/Resources/Locale/en-US/radio/components/pda-messages.ftl
@@ -0,0 +1,9 @@
+messages-pda-error-header = ERROR
+messages-pda-error-message = An error has occured in the messages system, have you tried turning it off and on again?
+messages-pda-notification-header = A new message from {$name} has arrived on your PDA
+messages-pda-connection-error = CONNECTION ERROR
+messages-pda-unknown-name = Unknown
+messages-pda-unknown-job = Unassigned
+messages-pda-user-missing = NAME ENTRY MISSING
+messages-pda-ui-back = Back
+messages-pda-chat-choice = Select chat
\ No newline at end of file
diff --git a/Resources/Locale/ru-RU/cartridge-loader/cartridges.ftl b/Resources/Locale/ru-RU/cartridge-loader/cartridges.ftl
index af468d7b13..ba956a2f39 100644
--- a/Resources/Locale/ru-RU/cartridge-loader/cartridges.ftl
+++ b/Resources/Locale/ru-RU/cartridge-loader/cartridges.ftl
@@ -3,6 +3,7 @@ device-pda-slot-component-slot-name-cartridge = Картридж
 default-program-name = Программа
 notekeeper-program-name = Заметки
 news-read-program-name = Новости станции
+messages-program-name = Сообщения
 
 crew-manifest-program-name = Манифест персонала
 crew-manifest-cartridge-loading = Загрузка ...
diff --git a/Resources/Locale/ru-RU/pda/pda-component.ftl b/Resources/Locale/ru-RU/pda/pda-component.ftl
index 73b7ab3346..59ae12b250 100644
--- a/Resources/Locale/ru-RU/pda/pda-component.ftl
+++ b/Resources/Locale/ru-RU/pda/pda-component.ftl
@@ -3,7 +3,7 @@
 # For the PDA screen
 comp-pda-ui = ID: [color=white]{ $owner }[/color], [color=yellow]{ CAPITALIZE($jobTitle) }[/color]
 comp-pda-ui-blank = ID:
-comp-pda-ui-owner = Владелец: [color=white]{ $actualOwnerName }[/color]
+comp-pda-ui-owner = Владелец: [color=white]{$actualOwnerName}[/color]
 comp-pda-io-program-list-button = Программы
 comp-pda-io-settings-button = Настройки
 comp-pda-io-program-fallback-title = Программа
diff --git a/Resources/Locale/ru-RU/radio/components/pda-messages.ftl b/Resources/Locale/ru-RU/radio/components/pda-messages.ftl
new file mode 100644
index 0000000000..92801205fc
--- /dev/null
+++ b/Resources/Locale/ru-RU/radio/components/pda-messages.ftl
@@ -0,0 +1,9 @@
+messages-pda-error-header = ОШИБКА
+messages-pda-error-message = В системе сообщений произошла ошибка, вы пробовали отключить и включить ее снова?
+messages-pda-notification-header = На ваш ПДА поступило новое сообщение от {$name}
+messages-pda-connection-error = ОШИБКА СОЕДЕНЕНИЯ
+messages-pda-unknown-name = Неизвестный
+messages-pda-unknown-job = Неназначен
+messages-pda-user-missing = ОТСУТСТВУЕТ ЗАПИСЬ ИМЕНИ
+messages-pda-ui-back = Назад
+messages-pda-chat-choice = Выберите чат
\ No newline at end of file
diff --git a/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/objects/devices/cartridges.ftl b/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/objects/devices/cartridges.ftl
index b10a6ba3c6..2cd8b7298b 100644
--- a/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/objects/devices/cartridges.ftl
+++ b/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/objects/devices/cartridges.ftl
@@ -4,3 +4,9 @@ ent-NotekeeperCartridge = картридж Заметки
 ent-NetProbeCartridge = картридж NetProbe
     .desc = Программа для получения адресов и частот сетевых устройств
     .suffix = { "" }
+ent-MessagesCartridge = картридж Сообщений
+    .desc = Программа для обмена сообщениями с другими членами экипажа
+    .suffix = { "" }
+ent-MessagesCartridgeSyndicate = картридж Сообщений Синдиката
+    .desc = Программа для обмена сообщениями с другими агентами Синдиката
+    .suffix = { "" }
\ No newline at end of file
diff --git a/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/structures/machines/telecomms.ftl b/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/structures/machines/telecomms.ftl
new file mode 100644
index 0000000000..88b6d92250
--- /dev/null
+++ b/Resources/Locale/ru-RU/ss14-ru/prototypes/entities/structures/machines/telecomms.ftl
@@ -0,0 +1,4 @@
+ent-MessagesServer = сервер сообщений ПДА
+    .desc = Сервер, который позволяет передавать сообщения с помощью ПДА
+ent-SyndicateMessagesServer = сервер сообщений ПДА Синдиката
+    .desc = Сервер, который позволяет обмениваться сообщениями с помощью ПДА между оперативниками Синдиката.
\ No newline at end of file
diff --git a/Resources/Prototypes/Device/devicenet_frequencies.yml b/Resources/Prototypes/Device/devicenet_frequencies.yml
index db48d117e0..9196bcb44b 100644
--- a/Resources/Prototypes/Device/devicenet_frequencies.yml
+++ b/Resources/Prototypes/Device/devicenet_frequencies.yml
@@ -101,3 +101,23 @@
   id: BasicDevice
   name: device-frequency-prototype-name-basic-device
   frequency: 1280
+
+- type: deviceFrequency
+  id: NTMessagesServer
+  name: device-frequency-prototype-name-nt-messages-server
+  frequency: 2790
+
+- type: deviceFrequency
+  id: NTMessagesClient
+  name: device-frequency-prototype-name-nt-messages-client
+  frequency: 2791
+
+- type: deviceFrequency
+  id: SyndicateMessagesServer
+  name: device-frequency-prototype-name-syndicate-messages-server
+  frequency: 2792
+
+- type: deviceFrequency
+  id: SyndicateMessagesClient
+  name: device-frequency-prototype-name-syndicate-messages-client
+  frequency: 2793
\ No newline at end of file
diff --git a/Resources/Prototypes/Entities/Objects/Devices/cartridges.yml b/Resources/Prototypes/Entities/Objects/Devices/cartridges.yml
index 0563826a57..f5f26e8a86 100644
--- a/Resources/Prototypes/Entities/Objects/Devices/cartridges.yml
+++ b/Resources/Prototypes/Entities/Objects/Devices/cartridges.yml
@@ -34,6 +34,54 @@
       state: news_read
   - type: NewsReaderCartridge
 
+- type: entity
+  parent: BaseItem
+  id: MessagesCartridge
+  name: messages cartridge
+  description: A program for messageing other crew
+  components:
+  - type: Sprite
+    sprite: Objects/Devices/cartridge.rsi
+    state: cart-y
+  - type: UIFragment
+    ui: !type:MessagesUi
+  - type: Cartridge
+    programName: messages-program-name
+    icon:
+      sprite:  Objects/Misc/books.rsi
+      state: book_icon
+  - type: MessagesCartridge
+  - type: DeviceNetwork
+    deviceNetId: Wireless
+    transmitFrequencyId: NTMessagesClient
+    receiveFrequencyId: NTMessagesServer
+    autoConnect: false
+  - type: StationLimitedNetwork
+
+- type: entity
+  parent: BaseItem
+  id: MessagesCartridgeSyndicate
+  name: syndicate messages cartridge
+  description: A program for messageing other syndicate agents
+  components:
+  - type: Sprite
+    sprite: Objects/Devices/cartridge.rsi
+    state: cart-y
+  - type: UIFragment
+    ui: !type:MessagesUi
+  - type: Cartridge
+    programName: messages-program-name
+    icon:
+      sprite:  Objects/Misc/books.rsi
+      state: book_icon
+  - type: MessagesCartridge
+  - type: DeviceNetwork
+    deviceNetId: Wireless
+    transmitFrequencyId: SyndicateMessagesClient
+    receiveFrequencyId: SyndicateMessagesServer
+    autoConnect: false
+  - type: StationLimitedNetwork
+
 - type: entity
   parent: BaseItem
   id: CrewManifestCartridge
diff --git a/Resources/Prototypes/Entities/Objects/Devices/pda.yml b/Resources/Prototypes/Entities/Objects/Devices/pda.yml
index cf190afafd..4a1a6c6c22 100644
--- a/Resources/Prototypes/Entities/Objects/Devices/pda.yml
+++ b/Resources/Prototypes/Entities/Objects/Devices/pda.yml
@@ -74,6 +74,7 @@
     preinstalled:
       - CrewManifestCartridge
       - NotekeeperCartridge
+      - MessagesCartridge
       - NewsReaderCartridge
       - BankCartridge
     cartridgeSlot:
@@ -682,6 +683,7 @@
     preinstalled:
       - CrewManifestCartridge
       - NotekeeperCartridge
+      - MessagesCartridge
       - NewsReaderCartridge
       - LogProbeCartridge
 
@@ -766,6 +768,7 @@
     uiKey: enum.PdaUiKey.Key
     preinstalled:
       - NotekeeperCartridge
+      - MessagesCartridgeSyndicate
     cartridgeSlot:
       priority: -1
       name: Cartridge
@@ -1067,6 +1070,7 @@
     uiKey: enum.PdaUiKey.Key
     preinstalled:
       - NotekeeperCartridge
+      - MessagesCartridgeSyndicate
     cartridgeSlot:
       priority: -1
       name: Cartridge
diff --git a/Resources/Prototypes/Entities/Structures/Machines/telecomms.yml b/Resources/Prototypes/Entities/Structures/Machines/telecomms.yml
index 6cc1fc7981..2664dfe24c 100644
--- a/Resources/Prototypes/Entities/Structures/Machines/telecomms.yml
+++ b/Resources/Prototypes/Entities/Structures/Machines/telecomms.yml
@@ -80,3 +80,69 @@
       - EncryptionKeySecurity
       - EncryptionKeyService
       - EncryptionKeyCommand
+
+- type: entity
+  id: MessagesServer
+  parent: BaseMachinePowered
+  name: PDA messaging server
+  description: Server that allows PDA messaging to function on the station.
+  components:
+  - type: Sprite
+    sprite: Structures/Machines/server.rsi
+    layers:
+      - state: server
+      - state: variant-research
+  - type: ApcPowerReceiver
+    powerLoad: 200
+  - type: ExtensionCableReceiver
+  - type: Destructible
+    thresholds:
+    - trigger:
+        !type:DamageTrigger
+        damage: 600
+      behaviors:
+        - !type:DoActsBehavior
+          acts: [ "Destruction" ]
+    - trigger:
+        !type:DamageTrigger
+        damage: 300
+      behaviors:
+      - !type:DoActsBehavior
+        acts: ["Destruction"]
+      - !type:PlaySoundBehavior
+        sound:
+          collection: MetalBreak
+      - !type:SpawnEntitiesBehavior
+        spawn:
+          SheetSteel1:
+            min: 1
+            max: 2
+  - type: Appearance
+  - type: AmbientSound
+    volume: -9
+    range: 5
+    sound:
+      path: /Audio/Ambience/Objects/server_fans.ogg
+  - type: MessagesServer
+  - type: SingletonDeviceNetServer
+  - type: DeviceNetwork
+    deviceNetId: Wireless
+    transmitFrequencyId: NTMessagesServer
+    receiveFrequencyId: NTMessagesClient
+    autoConnect: false
+  - type: StationLimitedNetwork
+
+- type: entity
+  id: SyndicateMessagesServer
+  parent: MessagesServer
+  name: Syndicate PDA messaging server
+  description: Server that allows PDA messaging between Syndicate operatives to function.
+  components:
+  - type: MessagesServer
+  - type: StationLimitedNetwork
+  - type: SingletonDeviceNetServer
+  - type: DeviceNetwork
+    deviceNetId: Wireless
+    transmitFrequencyId: SyndicateMessagesServer
+    receiveFrequencyId: SyndicateMessagesClient
+    autoConnect: false
\ No newline at end of file