Merge pull request #330 from Monadical-SAS/feat-participants

Participant API

server/migrations/versions/125031f7cb78_participants.py

@@ -0,0 +1,30 @@
+"""participants
+
+Revision ID: 125031f7cb78
+Revises: 0fea6d96b096
+Create Date: 2023-11-30 15:56:03.341466
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '125031f7cb78'
+down_revision: Union[str, None] = '0fea6d96b096'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('transcript', sa.Column('participants', sa.JSON(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('transcript', 'participants')
+    # ### end Alembic commands ###

server/reflector/app.py

@@ -13,6 +13,12 @@ from reflector.metrics import metrics_init
 from reflector.settings import settings
 from reflector.views.rtc_offer import router as rtc_offer_router
 from reflector.views.transcripts import router as transcripts_router
+from reflector.views.transcripts_audio import router as transcripts_audio_router
+from reflector.views.transcripts_participants import (
+    router as transcripts_participants_router,
+)
+from reflector.views.transcripts_webrtc import router as transcripts_webrtc_router
+from reflector.views.transcripts_websocket import router as transcripts_websocket_router
 from reflector.views.user import router as user_router
 
 try:
@@ -60,6 +66,10 @@ metrics_init(app, instrumentator)
 # register views
 app.include_router(rtc_offer_router)
 app.include_router(transcripts_router, prefix="/v1")
+app.include_router(transcripts_audio_router, prefix="/v1")
+app.include_router(transcripts_participants_router, prefix="/v1")
+app.include_router(transcripts_websocket_router, prefix="/v1")
+app.include_router(transcripts_webrtc_router, prefix="/v1")
 app.include_router(user_router, prefix="/v1")
 add_pagination(app)
 

server/reflector/db/transcripts.py

@@ -7,7 +7,7 @@ from uuid import uuid4
 
 import sqlalchemy
 from fastapi import HTTPException
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, ConfigDict, Field
 from reflector.db import database, metadata
 from reflector.processors.types import Word as ProcessorWord
 from reflector.settings import settings
@@ -27,6 +27,7 @@ transcripts = sqlalchemy.Table(
     sqlalchemy.Column("long_summary", sqlalchemy.String, nullable=True),
     sqlalchemy.Column("topics", sqlalchemy.JSON),
     sqlalchemy.Column("events", sqlalchemy.JSON),
+    sqlalchemy.Column("participants", sqlalchemy.JSON),
     sqlalchemy.Column("source_language", sqlalchemy.String, nullable=True),
     sqlalchemy.Column("target_language", sqlalchemy.String, nullable=True),
     sqlalchemy.Column(
@@ -112,6 +113,13 @@ class TranscriptEvent(BaseModel):
     data: dict
 
 
+class TranscriptParticipant(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: str = Field(default_factory=generate_uuid4)
+    speaker: int | None
+    name: str
+
+
 class Transcript(BaseModel):
     id: str = Field(default_factory=generate_uuid4)
     user_id: str | None = None
@@ -125,6 +133,7 @@ class Transcript(BaseModel):
     long_summary: str | None = None
     topics: list[TranscriptTopic] = []
     events: list[TranscriptEvent] = []
+    participants: list[TranscriptParticipant] = []
     source_language: str = "en"
     target_language: str = "en"
     share_mode: Literal["private", "semi-private", "public"] = "private"
@@ -142,12 +151,34 @@ class Transcript(BaseModel):
         else:
             self.topics.append(topic)
 
+    def upsert_participant(self, participant: TranscriptParticipant):
+        index = next(
+            (i for i, p in enumerate(self.participants) if p.id == participant.id),
+            None,
+        )
+        if index is not None:
+            self.participants[index] = participant
+        else:
+            self.participants.append(participant)
+        return participant
+
+    def delete_participant(self, participant_id: str):
+        index = next(
+            (i for i, p in enumerate(self.participants) if p.id == participant_id),
+            None,
+        )
+        if index is not None:
+            del self.participants[index]
+
     def events_dump(self, mode="json"):
         return [event.model_dump(mode=mode) for event in self.events]
 
     def topics_dump(self, mode="json"):
         return [topic.model_dump(mode=mode) for topic in self.topics]
 
+    def participants_dump(self, mode="json"):
+        return [participant.model_dump(mode=mode) for participant in self.participants]
+
     def unlink(self):
         self.data_path.unlink(missing_ok=True)
 
@@ -410,5 +441,28 @@ class TranscriptController:
         # unlink the local file
         transcript.audio_mp3_filename.unlink(missing_ok=True)
 
+    async def upsert_participant(
+        self,
+        transcript: Transcript,
+        participant: TranscriptParticipant,
+    ) -> TranscriptParticipant:
+        """
+        Add/update a participant to a transcript
+        """
+        result = transcript.upsert_participant(participant)
+        await self.update(transcript, {"participants": transcript.participants_dump()})
+        return result
+
+    async def delete_participant(
+        self,
+        transcript: Transcript,
+        participant_id: str,
+    ):
+        """
+        Delete a participant from a transcript
+        """
+        transcript.delete_participant(participant_id)
+        await self.update(transcript, {"participants": transcript.participants_dump()})
+
 
 transcripts_controller = TranscriptController()

server/reflector/views/transcripts.py

@@ -1,33 +1,19 @@
 from datetime import datetime, timedelta
 from typing import Annotated, Literal, Optional
 
-import httpx
 import reflector.auth as auth
-from fastapi import (
+from fastapi import APIRouter, Depends, HTTPException
-    APIRouter,
-    Depends,
-    HTTPException,
-    Request,
-    Response,
-    WebSocket,
-    WebSocketDisconnect,
-    status,
-)
 from fastapi_pagination import Page
 from fastapi_pagination.ext.databases import paginate
 from jose import jwt
 from pydantic import BaseModel, Field
 from reflector.db.transcripts import (
-    AudioWaveform,
+    TranscriptParticipant,
     TranscriptTopic,
     transcripts_controller,
 )
 from reflector.processors.types import Transcript as ProcessorTranscript
 from reflector.settings import settings
-from reflector.ws_manager import get_ws_manager
-
-from ._range_requests_response import range_requests_response
-from .rtc_offer import RtcOffer, rtc_offer_base
 
 router = APIRouter()
 
@@ -62,6 +48,7 @@ class GetTranscript(BaseModel):
     share_mode: str = Field("private")
     source_language: str | None
     target_language: str | None
+    participants: list[TranscriptParticipant] | None
 
 
 class CreateTranscript(BaseModel):
@@ -77,6 +64,7 @@ class UpdateTranscript(BaseModel):
     short_summary: Optional[str] = Field(None)
     long_summary: Optional[str] = Field(None)
     share_mode: Optional[Literal["public", "semi-private", "private"]] = Field(None)
+    participants: Optional[list[TranscriptParticipant]] = Field(None)
 
 
 class DeletionStatus(BaseModel):
@@ -192,19 +180,7 @@ async def transcript_update(
     transcript = await transcripts_controller.get_by_id(transcript_id, user_id=user_id)
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
-    values = {}
+    values = info.dict(exclude_unset=True)
-    if info.name is not None:
-        values["name"] = info.name
-    if info.locked is not None:
-        values["locked"] = info.locked
-    if info.long_summary is not None:
-        values["long_summary"] = info.long_summary
-    if info.short_summary is not None:
-        values["short_summary"] = info.short_summary
-    if info.title is not None:
-        values["title"] = info.title
-    if info.share_mode is not None:
-        values["share_mode"] = info.share_mode
     await transcripts_controller.update(transcript, values)
     return transcript
 
@@ -222,97 +198,6 @@ async def transcript_delete(
     return DeletionStatus(status="ok")
 
 
-@router.get("/transcripts/{transcript_id}/audio/mp3")
-@router.head("/transcripts/{transcript_id}/audio/mp3")
-async def transcript_get_audio_mp3(
-    request: Request,
-    transcript_id: str,
-    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
-    token: str | None = None,
-):
-    user_id = user["sub"] if user else None
-    if not user_id and token:
-        unauthorized_exception = HTTPException(
-            status_code=status.HTTP_401_UNAUTHORIZED,
-            detail="Invalid or expired token",
-            headers={"WWW-Authenticate": "Bearer"},
-        )
-        try:
-            payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[ALGORITHM])
-            user_id: str = payload.get("sub")
-        except jwt.JWTError:
-            raise unauthorized_exception
-
-    transcript = await transcripts_controller.get_by_id_for_http(
-        transcript_id, user_id=user_id
-    )
-
-    if transcript.audio_location == "storage":
-        # proxy S3 file, to prevent issue with CORS
-        url = await transcript.get_audio_url()
-        headers = {}
-
-        copy_headers = ["range", "accept-encoding"]
-        for header in copy_headers:
-            if header in request.headers:
-                headers[header] = request.headers[header]
-
-        async with httpx.AsyncClient() as client:
-            resp = await client.request(request.method, url, headers=headers)
-            return Response(
-                content=resp.content,
-                status_code=resp.status_code,
-                headers=resp.headers,
-            )
-
-    if transcript.audio_location == "storage":
-        # proxy S3 file, to prevent issue with CORS
-        url = await transcript.get_audio_url()
-        headers = {}
-
-        copy_headers = ["range", "accept-encoding"]
-        for header in copy_headers:
-            if header in request.headers:
-                headers[header] = request.headers[header]
-
-        async with httpx.AsyncClient() as client:
-            resp = await client.request(request.method, url, headers=headers)
-            return Response(
-                content=resp.content,
-                status_code=resp.status_code,
-                headers=resp.headers,
-            )
-
-    if not transcript.audio_mp3_filename.exists():
-        raise HTTPException(status_code=500, detail="Audio not found")
-
-    truncated_id = str(transcript.id).split("-")[0]
-    filename = f"recording_{truncated_id}.mp3"
-
-    return range_requests_response(
-        request,
-        transcript.audio_mp3_filename,
-        content_type="audio/mpeg",
-        content_disposition=f"attachment; filename={filename}",
-    )
-
-
-@router.get("/transcripts/{transcript_id}/audio/waveform")
-async def transcript_get_audio_waveform(
-    transcript_id: str,
-    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
-) -> AudioWaveform:
-    user_id = user["sub"] if user else None
-    transcript = await transcripts_controller.get_by_id_for_http(
-        transcript_id, user_id=user_id
-    )
-
-    if not transcript.audio_waveform_filename.exists():
-        raise HTTPException(status_code=404, detail="Audio not found")
-
-    return transcript.audio_waveform
-
-
 @router.get(
     "/transcripts/{transcript_id}/topics",
     response_model=list[GetTranscriptTopic],
@@ -330,84 +215,3 @@ async def transcript_get_topics(
     return [
         GetTranscriptTopic.from_transcript_topic(topic) for topic in transcript.topics
     ]
-
-
-# ==============================================================
-# Websocket
-# ==============================================================
-
-
-@router.get("/transcripts/{transcript_id}/events")
-async def transcript_get_websocket_events(transcript_id: str):
-    pass
-
-
-@router.websocket("/transcripts/{transcript_id}/events")
-async def transcript_events_websocket(
-    transcript_id: str,
-    websocket: WebSocket,
-    # user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
-):
-    # user_id = user["sub"] if user else None
-    transcript = await transcripts_controller.get_by_id(transcript_id)
-    if not transcript:
-        raise HTTPException(status_code=404, detail="Transcript not found")
-
-    # connect to websocket manager
-    # use ts:transcript_id as room id
-    room_id = f"ts:{transcript_id}"
-    ws_manager = get_ws_manager()
-    await ws_manager.add_user_to_room(room_id, websocket)
-
-    try:
-        # on first connection, send all events only to the current user
-        for event in transcript.events:
-            # for now, do not send TRANSCRIPT or STATUS options - theses are live event
-            # not necessary to be sent to the client; but keep the rest
-            name = event.event
-            if name in ("TRANSCRIPT", "STATUS"):
-                continue
-            await websocket.send_json(event.model_dump(mode="json"))
-
-        # XXX if transcript is final (locked=True and status=ended)
-        # XXX send a final event to the client and close the connection
-
-        # endless loop to wait for new events
-        # we do not have command system now,
-        while True:
-            await websocket.receive()
-    except (RuntimeError, WebSocketDisconnect):
-        await ws_manager.remove_user_from_room(room_id, websocket)
-
-
-# ==============================================================
-# Web RTC
-# ==============================================================
-
-
-@router.post("/transcripts/{transcript_id}/record/webrtc")
-async def transcript_record_webrtc(
-    transcript_id: str,
-    params: RtcOffer,
-    request: Request,
-    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
-):
-    user_id = user["sub"] if user else None
-    transcript = await transcripts_controller.get_by_id_for_http(
-        transcript_id, user_id=user_id
-    )
-
-    if transcript.locked:
-        raise HTTPException(status_code=400, detail="Transcript is locked")
-
-    # create a pipeline runner
-    from reflector.pipelines.main_live_pipeline import PipelineMainLive
-
-    pipeline_runner = PipelineMainLive(transcript_id=transcript_id)
-
-    # FIXME do not allow multiple recording at the same time
-    return await rtc_offer_base(
-        params,
-        request,
-        pipeline_runner=pipeline_runner,
-    )

server/reflector/views/transcripts_audio.py

@@ -0,0 +1,109 @@
+"""
+Transcripts audio related endpoints
+===================================
+
+"""
+from typing import Annotated, Optional
+
+import httpx
+import reflector.auth as auth
+from fastapi import APIRouter, Depends, HTTPException, Request, Response, status
+from jose import jwt
+from reflector.db.transcripts import AudioWaveform, transcripts_controller
+from reflector.settings import settings
+from reflector.views.transcripts import ALGORITHM
+
+from ._range_requests_response import range_requests_response
+
+router = APIRouter()
+
+
+@router.get("/transcripts/{transcript_id}/audio/mp3")
+@router.head("/transcripts/{transcript_id}/audio/mp3")
+async def transcript_get_audio_mp3(
+    request: Request,
+    transcript_id: str,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+    token: str | None = None,
+):
+    user_id = user["sub"] if user else None
+    if not user_id and token:
+        unauthorized_exception = HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+        try:
+            payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[ALGORITHM])
+            user_id: str = payload.get("sub")
+        except jwt.JWTError:
+            raise unauthorized_exception
+
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    if transcript.audio_location == "storage":
+        # proxy S3 file, to prevent issue with CORS
+        url = await transcript.get_audio_url()
+        headers = {}
+
+        copy_headers = ["range", "accept-encoding"]
+        for header in copy_headers:
+            if header in request.headers:
+                headers[header] = request.headers[header]
+
+        async with httpx.AsyncClient() as client:
+            resp = await client.request(request.method, url, headers=headers)
+            return Response(
+                content=resp.content,
+                status_code=resp.status_code,
+                headers=resp.headers,
+            )
+
+    if transcript.audio_location == "storage":
+        # proxy S3 file, to prevent issue with CORS
+        url = await transcript.get_audio_url()
+        headers = {}
+
+        copy_headers = ["range", "accept-encoding"]
+        for header in copy_headers:
+            if header in request.headers:
+                headers[header] = request.headers[header]
+
+        async with httpx.AsyncClient() as client:
+            resp = await client.request(request.method, url, headers=headers)
+            return Response(
+                content=resp.content,
+                status_code=resp.status_code,
+                headers=resp.headers,
+            )
+
+    if not transcript.audio_mp3_filename.exists():
+        raise HTTPException(status_code=500, detail="Audio not found")
+
+    truncated_id = str(transcript.id).split("-")[0]
+    filename = f"recording_{truncated_id}.mp3"
+
+    return range_requests_response(
+        request,
+        transcript.audio_mp3_filename,
+        content_type="audio/mpeg",
+        content_disposition=f"attachment; filename={filename}",
+    )
+
+
+@router.get("/transcripts/{transcript_id}/audio/waveform")
+async def transcript_get_audio_waveform(
+    transcript_id: str,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> AudioWaveform:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    if not transcript.audio_waveform_filename.exists():
+        raise HTTPException(status_code=404, detail="Audio not found")
+
+    return transcript.audio_waveform

server/reflector/views/transcripts_participants.py

@@ -0,0 +1,142 @@
+"""
+Transcript participants API endpoints
+=====================================
+
+"""
+from typing import Annotated, Optional
+
+import reflector.auth as auth
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel, ConfigDict, Field
+from reflector.db.transcripts import TranscriptParticipant, transcripts_controller
+from reflector.views.types import DeletionStatus
+
+router = APIRouter()
+
+
+class Participant(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: str
+    speaker: int | None
+    name: str
+
+
+class CreateParticipant(BaseModel):
+    speaker: Optional[int] = Field(None)
+    name: str
+
+
+class UpdateParticipant(BaseModel):
+    speaker: Optional[int] = Field(None)
+    name: Optional[str] = Field(None)
+
+
+@router.get("/transcripts/{transcript_id}/participants")
+async def transcript_get_participants(
+    transcript_id: str,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> list[Participant]:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    return [
+        Participant.model_validate(participant)
+        for participant in transcript.participants
+    ]
+
+
+@router.post("/transcripts/{transcript_id}/participants")
+async def transcript_add_participant(
+    transcript_id: str,
+    participant: CreateParticipant,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> Participant:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    # ensure the speaker is unique
+    for p in transcript.participants:
+        if p.speaker == participant.speaker:
+            raise HTTPException(
+                status_code=400,
+                detail="Speaker already assigned",
+            )
+
+    obj = await transcripts_controller.upsert_participant(
+        transcript, TranscriptParticipant(**participant.dict())
+    )
+    return Participant.model_validate(obj)
+
+
+@router.get("/transcripts/{transcript_id}/participants/{participant_id}")
+async def transcript_get_participant(
+    transcript_id: str,
+    participant_id: str,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> Participant:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    for p in transcript.participants:
+        if p.id == participant_id:
+            return Participant.model_validate(p)
+
+    raise HTTPException(status_code=404, detail="Participant not found")
+
+
+@router.patch("/transcripts/{transcript_id}/participants/{participant_id}")
+async def transcript_update_participant(
+    transcript_id: str,
+    participant_id: str,
+    participant: UpdateParticipant,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> Participant:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    # ensure the speaker is unique
+    for p in transcript.participants:
+        if p.speaker == participant.speaker and p.id != participant_id:
+            raise HTTPException(
+                status_code=400,
+                detail="Speaker already assigned",
+            )
+
+    # find the participant
+    obj = None
+    for p in transcript.participants:
+        if p.id == participant_id:
+            obj = p
+            break
+
+    if not obj:
+        raise HTTPException(status_code=404, detail="Participant not found")
+
+    # update participant but just the fields that are set
+    fields = participant.dict(exclude_unset=True)
+    obj = obj.copy(update=fields)
+
+    await transcripts_controller.upsert_participant(transcript, obj)
+    return Participant.model_validate(obj)
+
+
+@router.delete("/transcripts/{transcript_id}/participants/{participant_id}")
+async def transcript_delete_participant(
+    transcript_id: str,
+    participant_id: str,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+) -> DeletionStatus:
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+    await transcripts_controller.delete_participant(transcript, participant_id)
+    return DeletionStatus(status="ok")

server/reflector/views/transcripts_webrtc.py

@@ -0,0 +1,37 @@
+from typing import Annotated, Optional
+
+import reflector.auth as auth
+from fastapi import APIRouter, Depends, HTTPException, Request
+from reflector.db.transcripts import transcripts_controller
+
+from .rtc_offer import RtcOffer, rtc_offer_base
+
+router = APIRouter()
+
+
+@router.post("/transcripts/{transcript_id}/record/webrtc")
+async def transcript_record_webrtc(
+    transcript_id: str,
+    params: RtcOffer,
+    request: Request,
+    user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+):
+    user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id_for_http(
+        transcript_id, user_id=user_id
+    )
+
+    if transcript.locked:
+        raise HTTPException(status_code=400, detail="Transcript is locked")
+
+    # create a pipeline runner
+    from reflector.pipelines.main_live_pipeline import PipelineMainLive
+
+    pipeline_runner = PipelineMainLive(transcript_id=transcript_id)
+
+    # FIXME do not allow multiple recording at the same time
+    return await rtc_offer_base(
+        params,
+        request,
+        pipeline_runner=pipeline_runner,
+    )

server/reflector/views/transcripts_websocket.py

@@ -0,0 +1,53 @@
+"""
+Transcripts websocket API
+=========================
+
+"""
+from fastapi import APIRouter, HTTPException, WebSocket, WebSocketDisconnect
+from reflector.db.transcripts import transcripts_controller
+from reflector.ws_manager import get_ws_manager
+
+router = APIRouter()
+
+
+@router.get("/transcripts/{transcript_id}/events")
+async def transcript_get_websocket_events(transcript_id: str):
+    pass
+
+
+@router.websocket("/transcripts/{transcript_id}/events")
+async def transcript_events_websocket(
+    transcript_id: str,
+    websocket: WebSocket,
+    # user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+):
+    # user_id = user["sub"] if user else None
+    transcript = await transcripts_controller.get_by_id(transcript_id)
+    if not transcript:
+        raise HTTPException(status_code=404, detail="Transcript not found")
+
+    # connect to websocket manager
+    # use ts:transcript_id as room id
+    room_id = f"ts:{transcript_id}"
+    ws_manager = get_ws_manager()
+    await ws_manager.add_user_to_room(room_id, websocket)
+
+    try:
+        # on first connection, send all events only to the current user
+        for event in transcript.events:
+            # for now, do not send TRANSCRIPT or STATUS options - theses are live event
+            # not necessary to be sent to the client; but keep the rest
+            name = event.event
+            if name in ("TRANSCRIPT", "STATUS"):
+                continue
+            await websocket.send_json(event.model_dump(mode="json"))
+
+        # XXX if transcript is final (locked=True and status=ended)
+        # XXX send a final event to the client and close the connection
+
+        # endless loop to wait for new events
+        # we do not have command system now,
+        while True:
+            await websocket.receive()
+    except (RuntimeError, WebSocketDisconnect):
+        await ws_manager.remove_user_from_room(room_id, websocket)

server/reflector/views/types.py

@@ -0,0 +1,5 @@
+from pydantic import BaseModel
+
+
+class DeletionStatus(BaseModel):
+    status: str

server/tests/test_transcripts_participants.py

@@ -0,0 +1,164 @@
+import pytest
+from httpx import AsyncClient
+
+
+@pytest.mark.asyncio
+async def test_transcript_participants():
+    from reflector.app import app
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        response = await ac.post("/transcripts", json={"name": "test"})
+        assert response.status_code == 200
+        assert response.json()["participants"] == []
+
+        # create a participant
+        transcript_id = response.json()["id"]
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants", json={"name": "test"}
+        )
+        assert response.status_code == 200
+        assert response.json()["id"] is not None
+        assert response.json()["speaker"] is None
+        assert response.json()["name"] == "test"
+
+        # create another one with a speaker
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test2", "speaker": 1},
+        )
+        assert response.status_code == 200
+        assert response.json()["id"] is not None
+        assert response.json()["speaker"] == 1
+        assert response.json()["name"] == "test2"
+
+        # get all participants via transcript
+        response = await ac.get(f"/transcripts/{transcript_id}")
+        assert response.status_code == 200
+        assert len(response.json()["participants"]) == 2
+
+        # get participants via participants endpoint
+        response = await ac.get(f"/transcripts/{transcript_id}/participants")
+        assert response.status_code == 200
+        assert len(response.json()) == 2
+
+
+@pytest.mark.asyncio
+async def test_transcript_participants_same_speaker():
+    from reflector.app import app
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        response = await ac.post("/transcripts", json={"name": "test"})
+        assert response.status_code == 200
+        assert response.json()["participants"] == []
+        transcript_id = response.json()["id"]
+
+        # create a participant
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test", "speaker": 1},
+        )
+        assert response.status_code == 200
+        assert response.json()["speaker"] == 1
+
+        # create another one with the same speaker
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test2", "speaker": 1},
+        )
+        assert response.status_code == 400
+
+
+@pytest.mark.asyncio
+async def test_transcript_participants_update_name():
+    from reflector.app import app
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        response = await ac.post("/transcripts", json={"name": "test"})
+        assert response.status_code == 200
+        assert response.json()["participants"] == []
+        transcript_id = response.json()["id"]
+
+        # create a participant
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test", "speaker": 1},
+        )
+        assert response.status_code == 200
+        assert response.json()["speaker"] == 1
+
+        # update the participant
+        participant_id = response.json()["id"]
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/participants/{participant_id}",
+            json={"name": "test2"},
+        )
+        assert response.status_code == 200
+        assert response.json()["name"] == "test2"
+
+        # verify the participant was updated
+        response = await ac.get(
+            f"/transcripts/{transcript_id}/participants/{participant_id}"
+        )
+        assert response.status_code == 200
+        assert response.json()["name"] == "test2"
+
+        # verify the participant was updated in transcript
+        response = await ac.get(f"/transcripts/{transcript_id}")
+        assert response.status_code == 200
+        assert len(response.json()["participants"]) == 1
+        assert response.json()["participants"][0]["name"] == "test2"
+
+
+@pytest.mark.asyncio
+async def test_transcript_participants_update_speaker():
+    from reflector.app import app
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        response = await ac.post("/transcripts", json={"name": "test"})
+        assert response.status_code == 200
+        assert response.json()["participants"] == []
+        transcript_id = response.json()["id"]
+
+        # create a participant
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test", "speaker": 1},
+        )
+        assert response.status_code == 200
+        participant1_id = response.json()["id"]
+
+        # create another participant
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={"name": "test2", "speaker": 2},
+        )
+        assert response.status_code == 200
+        participant2_id = response.json()["id"]
+
+        # update the participant, refused as speaker is already taken
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/participants/{participant2_id}",
+            json={"speaker": 1},
+        )
+        assert response.status_code == 400
+
+        # delete the participant 1
+        response = await ac.delete(
+            f"/transcripts/{transcript_id}/participants/{participant1_id}"
+        )
+        assert response.status_code == 200
+
+        # update the participant 2 again, should be accepted now
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/participants/{participant2_id}",
+            json={"speaker": 1},
+        )
+        assert response.status_code == 200
+
+        # ensure participant2 name is still there
+        response = await ac.get(
+            f"/transcripts/{transcript_id}/participants/{participant2_id}"
+        )
+        assert response.status_code == 200
+        assert response.json()["name"] == "test2"
+        assert response.json()["speaker"] == 1