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using LibMatrix.Extensions;
using LibMatrix.Filters;
using LibMatrix.Homeservers;
using LibMatrix.Responses;
using Microsoft.Extensions.Logging;
namespace LibMatrix.Helpers;
public class SyncStateResolver(AuthenticatedHomeserverGeneric homeserver, ILogger? logger = null) {
public string? Since { get; set; }
public int Timeout { get; set; } = 30000;
public string? SetPresence { get; set; } = "online";
public SyncFilter? Filter { get; set; }
public bool FullState { get; set; } = false;
public SyncResponse? MergedState { get; set; }
private SyncHelper _syncHelper = new(homeserver, logger);
public async Task<(SyncResponse next, SyncResponse merged)> ContinueAsync(CancellationToken? cancellationToken = null) {
// copy properties
_syncHelper.Since = Since;
_syncHelper.Timeout = Timeout;
_syncHelper.SetPresence = SetPresence;
_syncHelper.Filter = Filter;
_syncHelper.FullState = FullState;
// run sync
var sync = await _syncHelper.SyncAsync(cancellationToken);
if (sync is null) return await ContinueAsync(cancellationToken);
if (MergedState is null) MergedState = sync;
else MergedState = MergeSyncs(MergedState, sync);
Since = sync.NextBatch;
return (sync, MergedState);
}
private SyncResponse MergeSyncs(SyncResponse oldState, SyncResponse newState) {
oldState.NextBatch = newState.NextBatch ?? oldState.NextBatch;
oldState.AccountData ??= new EventList();
oldState.AccountData.Events ??= new List<LegacyMatrixEventResponse>();
if (newState.AccountData?.Events is not null)
oldState.AccountData.Events.MergeStateEventLists(newState.AccountData?.Events ?? new List<LegacyMatrixEventResponse>());
oldState.Presence ??= new SyncResponse.PresenceDataStructure();
if (newState.Presence?.Events is not null)
oldState.Presence.Events.MergeStateEventLists(newState.Presence?.Events ?? new List<LegacyMatrixEventResponse>());
oldState.DeviceOneTimeKeysCount ??= new Dictionary<string, int>();
if (newState.DeviceOneTimeKeysCount is not null)
foreach (var (key, value) in newState.DeviceOneTimeKeysCount)
oldState.DeviceOneTimeKeysCount[key] = value;
oldState.Rooms ??= new SyncResponse.RoomsDataStructure();
if (newState.Rooms is not null)
oldState.Rooms = MergeRoomsDataStructure(oldState.Rooms, newState.Rooms);
oldState.ToDevice ??= new EventList();
oldState.ToDevice.Events ??= new List<LegacyMatrixEventResponse>();
if (newState.ToDevice?.Events is not null)
oldState.ToDevice.Events.MergeStateEventLists(newState.ToDevice?.Events ?? new List<LegacyMatrixEventResponse>());
oldState.DeviceLists ??= new SyncResponse.DeviceListsDataStructure();
if (newState.DeviceLists?.Changed is not null)
foreach (var s in oldState.DeviceLists.Changed!)
oldState.DeviceLists.Changed.Add(s);
if (newState.DeviceLists?.Left is not null)
foreach (var s in oldState.DeviceLists.Left!)
oldState.DeviceLists.Left.Add(s);
return oldState;
}
#region Merge rooms
private SyncResponse.RoomsDataStructure MergeRoomsDataStructure(SyncResponse.RoomsDataStructure oldState, SyncResponse.RoomsDataStructure newState) {
oldState.Join ??= new Dictionary<string, SyncResponse.RoomsDataStructure.JoinedRoomDataStructure>();
foreach (var (key, value) in newState.Join ?? new Dictionary<string, SyncResponse.RoomsDataStructure.JoinedRoomDataStructure>())
if (!oldState.Join.ContainsKey(key)) oldState.Join[key] = value;
else oldState.Join[key] = MergeJoinedRoomDataStructure(oldState.Join[key], value);
oldState.Invite ??= new Dictionary<string, SyncResponse.RoomsDataStructure.InvitedRoomDataStructure>();
foreach (var (key, value) in newState.Invite ?? new Dictionary<string, SyncResponse.RoomsDataStructure.InvitedRoomDataStructure>())
if (!oldState.Invite.ContainsKey(key)) oldState.Invite[key] = value;
else oldState.Invite[key] = MergeInvitedRoomDataStructure(oldState.Invite[key], value);
oldState.Leave ??= new Dictionary<string, SyncResponse.RoomsDataStructure.LeftRoomDataStructure>();
foreach (var (key, value) in newState.Leave ?? new Dictionary<string, SyncResponse.RoomsDataStructure.LeftRoomDataStructure>()) {
if (!oldState.Leave.ContainsKey(key)) oldState.Leave[key] = value;
else oldState.Leave[key] = MergeLeftRoomDataStructure(oldState.Leave[key], value);
if (oldState.Invite.ContainsKey(key)) oldState.Invite.Remove(key);
if (oldState.Join.ContainsKey(key)) oldState.Join.Remove(key);
}
return oldState;
}
private SyncResponse.RoomsDataStructure.LeftRoomDataStructure MergeLeftRoomDataStructure(SyncResponse.RoomsDataStructure.LeftRoomDataStructure oldData,
SyncResponse.RoomsDataStructure.LeftRoomDataStructure newData) {
oldData.AccountData ??= new EventList();
oldData.AccountData.Events ??= new List<LegacyMatrixEventResponse>();
oldData.Timeline ??= new SyncResponse.RoomsDataStructure.JoinedRoomDataStructure.TimelineDataStructure();
oldData.Timeline.Events ??= new List<LegacyMatrixEventResponse>();
oldData.State ??= new EventList();
oldData.State.Events ??= new List<LegacyMatrixEventResponse>();
if (newData.AccountData?.Events is not null)
oldData.AccountData.Events.MergeStateEventLists(newData.AccountData?.Events ?? new List<LegacyMatrixEventResponse>());
if (newData.Timeline?.Events is not null)
oldData.Timeline.Events.MergeStateEventLists(newData.Timeline?.Events ?? new List<LegacyMatrixEventResponse>());
oldData.Timeline.Limited = newData.Timeline?.Limited ?? oldData.Timeline.Limited;
oldData.Timeline.PrevBatch = newData.Timeline?.PrevBatch ?? oldData.Timeline.PrevBatch;
if (newData.State?.Events is not null)
oldData.State.Events.MergeStateEventLists(newData.State?.Events ?? new List<LegacyMatrixEventResponse>());
return oldData;
}
private SyncResponse.RoomsDataStructure.InvitedRoomDataStructure MergeInvitedRoomDataStructure(SyncResponse.RoomsDataStructure.InvitedRoomDataStructure oldData,
SyncResponse.RoomsDataStructure.InvitedRoomDataStructure newData) {
oldData.InviteState ??= new EventList();
oldData.InviteState.Events ??= new List<LegacyMatrixEventResponse>();
if (newData.InviteState?.Events is not null)
oldData.InviteState.Events.MergeStateEventLists(newData.InviteState?.Events ?? new List<LegacyMatrixEventResponse>());
return oldData;
}
private SyncResponse.RoomsDataStructure.JoinedRoomDataStructure MergeJoinedRoomDataStructure(SyncResponse.RoomsDataStructure.JoinedRoomDataStructure oldData,
SyncResponse.RoomsDataStructure.JoinedRoomDataStructure newData) {
oldData.AccountData ??= new EventList();
oldData.AccountData.Events ??= new List<LegacyMatrixEventResponse>();
oldData.Timeline ??= new SyncResponse.RoomsDataStructure.JoinedRoomDataStructure.TimelineDataStructure();
oldData.Timeline.Events ??= new List<LegacyMatrixEventResponse>();
oldData.State ??= new EventList();
oldData.State.Events ??= new List<LegacyMatrixEventResponse>();
oldData.Ephemeral ??= new EventList();
oldData.Ephemeral.Events ??= new List<LegacyMatrixEventResponse>();
if (newData.AccountData?.Events is not null)
oldData.AccountData.Events.MergeStateEventLists(newData.AccountData?.Events ?? new List<LegacyMatrixEventResponse>());
if (newData.Timeline?.Events is not null)
oldData.Timeline.Events.MergeStateEventLists(newData.Timeline?.Events ?? new List<LegacyMatrixEventResponse>());
oldData.Timeline.Limited = newData.Timeline?.Limited ?? oldData.Timeline.Limited;
oldData.Timeline.PrevBatch = newData.Timeline?.PrevBatch ?? oldData.Timeline.PrevBatch;
if (newData.State?.Events is not null)
oldData.State.Events.MergeStateEventLists(newData.State?.Events ?? new List<LegacyMatrixEventResponse>());
if (newData.Ephemeral?.Events is not null)
oldData.Ephemeral.Events.MergeStateEventLists(newData.Ephemeral?.Events ?? new List<LegacyMatrixEventResponse>());
oldData.UnreadNotifications ??= new SyncResponse.RoomsDataStructure.JoinedRoomDataStructure.UnreadNotificationsDataStructure();
oldData.UnreadNotifications.HighlightCount = newData.UnreadNotifications?.HighlightCount ?? oldData.UnreadNotifications.HighlightCount;
oldData.UnreadNotifications.NotificationCount = newData.UnreadNotifications?.NotificationCount ?? oldData.UnreadNotifications.NotificationCount;
oldData.Summary ??= new SyncResponse.RoomsDataStructure.JoinedRoomDataStructure.SummaryDataStructure {
Heroes = newData.Summary?.Heroes ?? oldData.Summary.Heroes,
JoinedMemberCount = newData.Summary?.JoinedMemberCount ?? oldData.Summary.JoinedMemberCount,
InvitedMemberCount = newData.Summary?.InvitedMemberCount ?? oldData.Summary.InvitedMemberCount
};
oldData.Summary.Heroes = newData.Summary?.Heroes ?? oldData.Summary.Heroes;
oldData.Summary.JoinedMemberCount = newData.Summary?.JoinedMemberCount ?? oldData.Summary.JoinedMemberCount;
oldData.Summary.InvitedMemberCount = newData.Summary?.InvitedMemberCount ?? oldData.Summary.InvitedMemberCount;
return oldData;
}
#endregion
}
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