1 files changed, 93 insertions, 0 deletions
diff --git a/LibMatrix.LegacyEvents.EventTypes/Spec/State/RoomInfo/RoomPowerLevelLegacyEventContent.cs b/LibMatrix.LegacyEvents.EventTypes/Spec/State/RoomInfo/RoomPowerLevelLegacyEventContent.cs
new file mode 100644
index 0000000..cf41b6d
--- /dev/null
+++ b/LibMatrix.LegacyEvents.EventTypes/Spec/State/RoomInfo/RoomPowerLevelLegacyEventContent.cs
@@ -0,0 +1,93 @@
+using System.Text.Json.Serialization;
+
+namespace LibMatrix.LegacyEvents.EventTypes.Spec.State;
+
+[LegacyMatrixEvent(EventName = EventId)]
+[JsonNumberHandling(JsonNumberHandling.AllowReadingFromString)]
+public class RoomPowerLevelLegacyEventContent : LegacyEventContent {
+    public const string EventId = "m.room.power_levels";
+
+    [JsonPropertyName("ban")]
+    public long? Ban { get; set; } = 50;
+
+    [JsonPropertyName("events_default")]
+    public long? EventsDefault { get; set; } = 0;
+
+    [JsonPropertyName("invite")]
+    public long? Invite { get; set; } = 0;
+
+    [JsonPropertyName("kick")]
+    public long? Kick { get; set; } = 50;
+
+    [JsonPropertyName("notifications")]
+    public NotificationsPL? NotificationsPl { get; set; } // = null!;
+
+    [JsonPropertyName("redact")]
+    public long? Redact { get; set; } = 50;
+
+    [JsonPropertyName("state_default")]
+    public long? StateDefault { get; set; } = 50;
+
+    [JsonPropertyName("events")]
+    public Dictionary<string, long>? Events { get; set; } // = null!;
+
+    [JsonPropertyName("users")]
+    public Dictionary<string, long>? Users { get; set; } // = null!;
+
+    [JsonPropertyName("users_default")]
+    public long? UsersDefault { get; set; } = 0;
+
+    [Obsolete("Historical was a key related to MSC2716, a spec change on backfill that was dropped!", true)]
+    [JsonIgnore]
+    [JsonPropertyName("historical")]
+    public long Historical { get; set; } // = 50;
+
+    public class NotificationsPL {
+        [JsonPropertyName("room")]
+        public long Room { get; set; } = 50;
+    }
+
+    public bool IsUserAdmin(string userId) {
+        ArgumentNullException.ThrowIfNull(userId);
+        return Users.TryGetValue(userId, out var level) && level >= Events.Max(x => x.Value);
+    }
+
+    public bool UserHasTimelinePermission(string userId, string eventType) {
+        ArgumentNullException.ThrowIfNull(userId);
+        return Users.TryGetValue(userId, out var level) && level >= Events.GetValueOrDefault(eventType, EventsDefault ?? 0);
+    }
+
+    public bool UserHasStatePermission(string userId, string eventType) {
+        ArgumentNullException.ThrowIfNull(userId);
+        var userLevel = GetUserPowerLevel(userId);
+        var eventLevel = GetStateEventPowerLevel(eventType);
+        
+        Console.WriteLine($"{userId}={userLevel} >= {eventType}={eventLevel} = {userLevel >= eventLevel}");
+
+        return userLevel >= eventLevel;
+    }
+
+    public long GetUserPowerLevel(string userId) {
+        ArgumentNullException.ThrowIfNull(userId);
+        if (Users is null) return UsersDefault ?? 0;
+        return Users.TryGetValue(userId, out var level) ? level : UsersDefault ?? 0;
+    }
+
+    public long GetStateEventPowerLevel(string eventType) {
+        ArgumentNullException.ThrowIfNull(eventType);
+        if (Events is null) return StateDefault ?? 0;
+        return Events.TryGetValue(eventType, out var level) ? level : StateDefault ?? 0;
+    }
+    
+    public long GetTimelineEventPowerLevel(string eventType) {
+        ArgumentNullException.ThrowIfNull(eventType);
+        if (Events is null) return EventsDefault ?? 0;
+        return Events.TryGetValue(eventType, out var level) ? level : EventsDefault ?? 0;
+    }
+
+    public void SetUserPowerLevel(string userId, long powerLevel) {
+        ArgumentNullException.ThrowIfNull(userId);
+        Users ??= new Dictionary<string, long>();
+        Users[userId] = powerLevel;
+    }
+}
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