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MareSynchronosServer/MareSynchronosServer/Hubs/MareHub.Chat.cs

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+using MareSynchronos.API.Data;
+using MareSynchronos.API.Data.Enum;
+using MareSynchronos.API.Dto.Group;
+using MareSynchronos.API.Dto.User;
+using MareSynchronosServer.Utils;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.SignalR;
+using Microsoft.EntityFrameworkCore;
+
+namespace MareSynchronosServer.Hubs;
+
+public partial class MareHub
+{
+    [Authorize(Policy = "Identified")]
+    public Task UserChatSendMsg(UserDto dto, ChatMessage message)
+    {
+        _logger.LogCallInfo(MareHubLogger.Args(dto));
+        // TODO
+        return Task.CompletedTask;
+    }
+
+    [Authorize(Policy = "Identified")]
+    public async Task GroupChatSendMsg(GroupDto dto, ChatMessage message)
+    {
+        _logger.LogCallInfo(MareHubLogger.Args(dto));
+
+        var (userExists, groupPair) = await TryValidateUserInGroup(dto.GID, UserUID).ConfigureAwait(false);
+        if (!userExists) return;
+
+        var group = await DbContext.Groups.AsNoTracking().SingleAsync(g => g.GID == dto.GID).ConfigureAwait(false);
+        var sender = await DbContext.Users.AsNoTracking().SingleAsync(u => u.UID == UserUID).ConfigureAwait(false);
+        var groupPairs = await DbContext.GroupPairs.AsNoTracking().Include(p => p.GroupUser).Where(p => p.GroupGID == dto.Group.GID).ToListAsync().ConfigureAwait(false);
+
+        if (group == null || sender == null) return;
+
+        // TODO: Add and check chat permissions
+        if (group.Alias?.Equals("Snowcloak", StringComparison.Ordinal) ?? false)
+        {
+            await Clients.Caller.Client_ReceiveServerMessage(MessageSeverity.Warning, $"Chat is disabled for syncshell '{dto.GroupAliasOrGID}'.").ConfigureAwait(false);
+            return;
+        }
+
+        // TOOO: Sign the message
+        var signedMessage = new SignedChatMessage(message, sender.ToUserData())
+        {
+            Timestamp = 0,
+            Signature = "",
+        };
+
+        await Clients.Users(groupPairs.Select(p => p.GroupUserUID)).Client_GroupChatMsg(new(new(group.ToGroupData()), signedMessage)).ConfigureAwait(false);
+    }
+}