1 files changed, 113 insertions, 0 deletions
diff --git a/Utilities/LibMatrix.HomeserverEmulator/Controllers/Rooms/RoomStateController.cs b/Utilities/LibMatrix.HomeserverEmulator/Controllers/Rooms/RoomStateController.cs
new file mode 100644
index 0000000..74c70a3
--- /dev/null
+++ b/Utilities/LibMatrix.HomeserverEmulator/Controllers/Rooms/RoomStateController.cs
@@ -0,0 +1,113 @@
+using System.Collections.Frozen;
+using System.Text.Json.Nodes;
+using LibMatrix.HomeserverEmulator.Extensions;
+using LibMatrix.HomeserverEmulator.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace LibMatrix.HomeserverEmulator.Controllers.Rooms;
+
+[ApiController]
+[Route("/_matrix/client/{version}/rooms/{roomId}/state")]
+public class RoomStateController(ILogger<RoomStateController> logger, TokenService tokenService, UserStore userStore, RoomStore roomStore) : ControllerBase {
+    [HttpGet("")]
+    public async Task<FrozenSet<StateEventResponse>> GetState(string roomId) {
+        var token = tokenService.GetAccessTokenOrNull(HttpContext);
+        if (token == null)
+            throw new MatrixException() {
+                ErrorCode = "M_MISSING_TOKEN",
+                Error = "Missing token"
+            };
+
+        var user = await userStore.GetUserByToken(token);
+        if (user == null)
+            throw new MatrixException() {
+                ErrorCode = "M_UNKNOWN_TOKEN",
+                Error = "No such user"
+            };
+
+        var room = roomStore.GetRoomById(roomId);
+        if (room == null)
+            throw new MatrixException() {
+                ErrorCode = "M_NOT_FOUND",
+                Error = "Room not found"
+            };
+
+        return room.State;
+    }
+
+    [HttpGet("{eventType}")]
+    public async Task<object?> GetState(string roomId, string eventType, [FromQuery] string format = "client") {
+        return await GetState(roomId, eventType, "", format);
+    }
+
+    [HttpGet("{eventType}/{stateKey}")]
+    public async Task<object?> GetState(string roomId, string eventType, string stateKey, [FromQuery] string format = "client") {
+        var token = tokenService.GetAccessTokenOrNull(HttpContext);
+        if (token == null)
+            throw new MatrixException() {
+                ErrorCode = "M_MISSING_TOKEN",
+                Error = "Missing token"
+            };
+
+        var user = await userStore.GetUserByToken(token);
+        if (user == null)
+            throw new MatrixException() {
+                ErrorCode = "M_UNKNOWN_TOKEN",
+                Error = "No such user"
+            };
+
+        var room = roomStore.GetRoomById(roomId);
+        if (room == null)
+            throw new MatrixException() {
+                ErrorCode = "M_NOT_FOUND",
+                Error = "Room not found"
+            };
+
+        var stateEvent = room.State.FirstOrDefault(x => x.Type == eventType && x.StateKey == stateKey);
+        if (stateEvent == null) {
+            Console.WriteLine($"Event not found in room {roomId} matching {eventType}/{stateKey}");
+            throw new MatrixException() {
+                ErrorCode = "M_NOT_FOUND",
+                Error = "Event not found"
+            };
+        }
+
+        // return stateEvent;
+        return format == "event" ? stateEvent : stateEvent.RawContent;
+    }
+
+    [HttpPut("{eventType}")]
+    public async Task<EventIdResponse> SetState(string roomId, string eventType, [FromBody] JsonObject? request) {
+        return await SetState(roomId, eventType, "", request);
+    }
+
+    [HttpPut("{eventType}/{stateKey}")]
+    public async Task<EventIdResponse> SetState(string roomId, string eventType, string stateKey, [FromBody] JsonObject? request) {
+        var token = tokenService.GetAccessTokenOrNull(HttpContext);
+        if (token == null)
+            throw new MatrixException() {
+                ErrorCode = "M_MISSING_TOKEN",
+                Error = "Missing token"
+            };
+
+        var user = await userStore.GetUserByToken(token);
+        if (user == null)
+            throw new MatrixException() {
+                ErrorCode = "M_UNKNOWN_TOKEN",
+                Error = "No such user"
+            };
+
+        var room = roomStore.GetRoomById(roomId);
+        if (room == null)
+            throw new MatrixException() {
+                ErrorCode = "M_NOT_FOUND",
+                Error = "Room not found"
+            };
+        var evt = room.SetStateInternal(new StateEvent() { Type = eventType, StateKey = stateKey, RawContent = request }.ToStateEvent(user, room));
+        evt.Type = eventType;
+        evt.StateKey = stateKey;
+        return new EventIdResponse() {
+            EventId = evt.EventId ?? throw new InvalidOperationException("EventId is null")
+        };
+    }
+}
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