Added ISessionManagerAPI

The intention is to move it to MP API as a way to provide a way for other mods to interact with the session manager.

Currently needs a little bit more documentation (currently all documentation was moved from SessionManager).

Source/Client/Experimental/ISessionManagerAPI.cs

@@ -0,0 +1,50 @@
+using System.Collections.Generic;
+using Multiplayer.Client.Persistent;
+using Verse;
+
+namespace Multiplayer.Client.Experimental;
+
+public interface ISessionManagerAPI
+{
+    IReadOnlyList<ISession> AllSessions { get; }
+    IReadOnlyList<IExposableSession> ExposableSessions { get; }
+    IReadOnlyList<ISemiPersistentSession> SemiPersistentSessions { get; }
+    IReadOnlyList<ITickingSession> TickingSessions { get; }
+    bool AnySessionActive { get; }
+
+    /// <summary>
+    /// Adds a new session to the list of active sessions.
+    /// </summary>
+    /// <param name="session">The session to try to add to active sessions.</param>
+    /// <returns><see langword="true"/> if the session was added to active ones, <see langword="false"/> if there was a conflict between sessions.</returns>
+    bool AddSession(ISession session);
+
+    /// <summary>
+    /// Tries to get a conflicting session (through the use of <see cref="ISessionWithCreationRestrictions"/>) or, if there was none, returns the input <paramref name="session"/>.
+    /// </summary>
+    /// <param name="session">The session to try to add to active sessions.</param>
+    /// <returns>A session that was conflicting with the input one, or the input itself if there were no conflicts. It may be of a different type than the input.</returns>
+    ISession GetOrAddSessionAnyConflict(ISession session);
+
+    /// <summary>
+    /// Tries to get a conflicting session (through the use of <see cref="ISessionWithCreationRestrictions"/>) or, if there was none, returns the input <paramref name="session"/>.
+    /// </summary>
+    /// <param name="session">The session to try to add to active sessions.</param>
+    /// <returns>A session that was conflicting with the input one if it's the same type (<c>other is T</c>), null if it's a different type, or the input itself if there were no conflicts.</returns>
+    T GetOrAddSession<T>(T session) where T : ISession;
+
+    /// <summary>
+    /// Tries to remove a session from active ones.
+    /// </summary>
+    /// <param name="session">The session to try to remove from the active sessions.</param>
+    /// <returns><see langword="true"/> if successfully removed from <see cref="AllSessions"/>. Doesn't correspond to if it was successfully removed from other lists of sessions.</returns>
+    bool RemoveSession(ISession session);
+
+    T GetFirstOfType<T>() where T : ISession;
+
+    T GetFirstWithId<T>(int id) where T : ISession;
+
+    ISession GetFirstWithId(int id);
+
+    bool IsAnySessionCurrentlyPausing(Map map); // Is it necessary for the API?
+}

Source/Client/Persistent/SessionManager.cs

@@ -2,14 +2,15 @@
 using System.Collections.Generic;
 using System.Linq;
 using HarmonyLib;
+using Multiplayer.Client.Experimental;
 using Multiplayer.Client.Saving;
 using Multiplayer.Common;
 using RimWorld;
 using Verse;
 
 namespace Multiplayer.Client.Persistent;
 
-public class SessionManager : IHasSemiPersistentData
+public class SessionManager : IHasSemiPersistentData, ISessionManagerAPI
 {
     public IReadOnlyList<ISession> AllSessions => allSessions.AsReadOnly();
     public IReadOnlyList<IExposableSession> ExposableSessions => exposableSessions.AsReadOnly();
@@ -24,11 +25,6 @@ public class SessionManager : IHasSemiPersistentData
 
     public bool AnySessionActive => allSessions.Count > 0;
 
-    /// <summary>
-    /// Adds a new session to the list of active sessions.
-    /// </summary>
-    /// <param name="session">The session to try to add to active sessions.</param>
-    /// <returns><see langword="true"/> if the session was added to active ones, <see langword="false"/> if there was a conflict between sessions.</returns>
     public bool AddSession(ISession session)
     {
         if (GetFirstConflictingSession(session) != null)
@@ -38,11 +34,6 @@ public bool AddSession(ISession session)
         return true;
     }
 
-    /// <summary>
-    /// Tries to get a conflicting session (through the use of <see cref="ISessionWithCreationRestrictions"/>) or, if there was none, returns the input <paramref name="session"/>.
-    /// </summary>
-    /// <param name="session">The session to try to add to active sessions.</param>
-    /// <returns>A session that was conflicting with the input one, or the input itself if there were no conflicts. It may be of a different type than the input.</returns>
     public ISession GetOrAddSessionAnyConflict(ISession session)
     {
         if (GetFirstConflictingSession(session) is { } other)
@@ -52,11 +43,6 @@ public ISession GetOrAddSessionAnyConflict(ISession session)
         return session;
     }
 
-    /// <summary>
-    /// Tries to get a conflicting session (through the use of <see cref="ISessionWithCreationRestrictions"/>) or, if there was none, returns the input <paramref name="session"/>.
-    /// </summary>
-    /// <param name="session">The session to try to add to active sessions.</param>
-    /// <returns>A session that was conflicting with the input one if it's the same type (<c>other is T</c>), null if it's a different type, or the input itself if there were no conflicts.</returns>
     public T GetOrAddSession<T>(T session) where T : ISession
     {
         if (session is ISessionWithCreationRestrictions s)
@@ -98,11 +84,6 @@ private void AddSessionNoCheck(ISession session)
         session.PostAddSession();
     }
 
-    /// <summary>
-    /// Tries to remove a session from active ones.
-    /// </summary>
-    /// <param name="session">The session to try to remove from the active sessions.</param>
-    /// <returns><see langword="true"/> if successfully removed from <see cref="AllSessions"/>. Doesn't correspond to if it was successfully removed from other lists of sessions.</returns>
     public bool RemoveSession(ISession session)
     {
         if (session is IExposableSession exposable)