From 18cbc27ec334eebf3f4c23afdac936b8fd14afa5 Mon Sep 17 00:00:00 2001
From: Kai <kai@localhost>
Date: Tue, 17 Feb 2026 16:22:32 +0100
Subject: [PATCH] Matrix-Nachrichtenabruf auf /rooms/{roomId}/messages
 umstellen

---
 cmd/server/matrix.go | 82 +++++++++++++++++++++++---------------------
 1 file changed, 43 insertions(+), 39 deletions(-)

diff --git a/cmd/server/matrix.go b/cmd/server/matrix.go
index 8457748..c460685 100644
--- a/cmd/server/matrix.go
+++ b/cmd/server/matrix.go
@@ -48,8 +48,12 @@ func newMatrixClientFromEnv() *MatrixClient {
 }
 
 func (m *MatrixClient) FetchRecentMessages(ctx context.Context) ([]MatrixMessage, error) {
-	filter := fmt.Sprintf(`{"room":{"rooms":["%s"],"timeline":{"limit":%d}}}`, m.RoomID, m.Limit)
-	endpoint := m.HomeserverURL + "/_matrix/client/v3/sync?timeout=0&filter=" + url.QueryEscape(filter)
+	endpoint := fmt.Sprintf(
+		"%s/_matrix/client/v3/rooms/%s/messages?dir=b&limit=%d",
+		m.HomeserverURL,
+		url.PathEscape(m.RoomID),
+		m.Limit,
+	)
 
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
 	if err != nil {
@@ -66,50 +70,50 @@ func (m *MatrixClient) FetchRecentMessages(ctx context.Context) ([]MatrixMessage
 		return nil, errors.New("matrix sync failed: " + strconv.Itoa(resp.StatusCode))
 	}
 
-	var syncResp struct {
-		Rooms struct {
-			Join map[string]struct {
-				Timeline struct {
-					Events []struct {
-						Type           string `json:"type"`
-						Sender         string `json:"sender"`
-						OriginServerTS int64  `json:"origin_server_ts"`
-						Content        struct {
-							MsgType string `json:"msgtype"`
-							Body    string `json:"body"`
-						} `json:"content"`
-					} `json:"events"`
-				} `json:"timeline"`
-			} `json:"join"`
-		} `json:"rooms"`
+	var messagesResp struct {
+		Chunk []struct {
+			Type           string `json:"type"`
+			Sender         string `json:"sender"`
+			OriginServerTS int64  `json:"origin_server_ts"`
+			Content        struct {
+				MsgType string `json:"msgtype"`
+				Body    string `json:"body"`
+			} `json:"content"`
+		} `json:"chunk"`
 	}
-	if err := json.NewDecoder(resp.Body).Decode(&syncResp); err != nil {
+	if err := json.NewDecoder(resp.Body).Decode(&messagesResp); err != nil {
 		return nil, err
 	}
-
-	room, ok := syncResp.Rooms.Join[m.RoomID]
-	if !ok {
+	if len(messagesResp.Chunk) == 0 {
 		return []MatrixMessage{}, nil
 	}
 
-	out := make([]MatrixMessage, 0, len(room.Timeline.Events))
-	for _, ev := range room.Timeline.Events {
-		if ev.Type != "m.room.message" {
-			continue
+	out := make([]MatrixMessage, 0, len(messagesResp.Chunk))
+	for i := len(messagesResp.Chunk) - 1; i >= 0; i-- {
+		ev := messagesResp.Chunk[i]
+		switch ev.Type {
+		case "m.room.message":
+			if ev.Content.MsgType != "m.text" && ev.Content.MsgType != "m.notice" {
+				continue
+			}
+			body := strings.TrimSpace(ev.Content.Body)
+			if body == "" {
+				continue
+			}
+			ts := time.UnixMilli(ev.OriginServerTS).Local().Format("02.01.2006 15:04")
+			out = append(out, MatrixMessage{
+				Sender:    ev.Sender,
+				Body:      body,
+				Timestamp: ts,
+			})
+		case "m.room.encrypted":
+			ts := time.UnixMilli(ev.OriginServerTS).Local().Format("02.01.2006 15:04")
+			out = append(out, MatrixMessage{
+				Sender:    ev.Sender,
+				Body:      "[Verschlüsselte Nachricht]",
+				Timestamp: ts,
+			})
 		}
-		if ev.Content.MsgType != "m.text" && ev.Content.MsgType != "m.notice" {
-			continue
-		}
-		body := strings.TrimSpace(ev.Content.Body)
-		if body == "" {
-			continue
-		}
-		ts := time.UnixMilli(ev.OriginServerTS).Local().Format("02.01.2006 15:04")
-		out = append(out, MatrixMessage{
-			Sender:    ev.Sender,
-			Body:      body,
-			Timestamp: ts,
-		})
 	}
 	return out, nil
 }