server: allow reassign speaker range using participant_id

server/reflector/db/transcripts.py

@@ -248,6 +248,23 @@ class Transcript(BaseModel):
             url += f"?token={token}"
         return url
 
+    def find_empty_speaker(self) -> int:
+        """
+        Find an empty speaker seat
+        """
+        speakers = set(
+            word.speaker
+            for topic in self.topics
+            for word in topic.words
+            if word.speaker is not None
+        )
+        i = 0
+        while True:
+            if i not in speakers:
+                return i
+            i += 1
+        raise Exception("No empty speaker found")
+
 
 class TranscriptController:
     async def get_all(

server/reflector/views/transcripts_participants.py

@@ -59,12 +59,13 @@ async def transcript_add_participant(
     )
 
     # ensure the speaker is unique
-    for p in transcript.participants:
-        if p.speaker == participant.speaker:
-            raise HTTPException(
-                status_code=400,
-                detail="Speaker already assigned",
-            )
+    if participant.speaker is not None:
+        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())

server/reflector/views/transcripts_speaker.py

@@ -7,14 +7,15 @@ from typing import Annotated, Optional
 
 import reflector.auth as auth
 from fastapi import APIRouter, Depends, HTTPException
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 from reflector.db.transcripts import transcripts_controller
 
 router = APIRouter()
 
 
 class SpeakerAssignment(BaseModel):
-    speaker: int
+    speaker: Optional[int] = Field(None, ge=0)
+    participant: Optional[str] = Field(None)
     timestamp_from: float
     timestamp_to: float
 
@@ -42,6 +43,44 @@ async def transcript_assign_speaker(
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
 
+    if assignment.speaker is None and assignment.participant is None:
+        raise HTTPException(
+            status_code=400,
+            detail="Either speaker or participant must be provided",
+        )
+
+    if assignment.speaker is not None and assignment.participant is not None:
+        raise HTTPException(
+            status_code=400,
+            detail="Only one of speaker or participant must be provided",
+        )
+
+    # if it's a participant, search for it
+    if assignment.speaker is not None:
+        speaker = assignment.speaker
+
+    elif assignment.participant is not None:
+        participant = next(
+            (
+                participant
+                for participant in transcript.participants
+                if participant.id == assignment.participant
+            ),
+            None,
+        )
+        if not participant:
+            raise HTTPException(
+                status_code=404,
+                detail="Participant not found",
+            )
+
+        # if the participant does not have a speaker, create one
+        if participant.speaker is None:
+            participant.speaker = transcript.find_empty_speaker()
+            await transcripts_controller.upsert_participant(transcript, participant)
+
+        speaker = participant.speaker
+
     # reassign speakers from words in the transcript
     ts_from = assignment.timestamp_from
     ts_to = assignment.timestamp_to
@@ -50,7 +89,7 @@ async def transcript_assign_speaker(
         changed = False
         for word in topic.words:
             if ts_from <= word.start <= ts_to:
-                word.speaker = assignment.speaker
+                word.speaker = speaker
                 changed = True
         if changed:
             changed_topics.append(topic)

server/tests/test_transcripts_speaker.py

@@ -184,3 +184,218 @@ async def test_transcript_merge_speaker(fake_transcript_with_topics):
         assert topics[0]["words"][1]["speaker"] == 0
         assert topics[1]["words"][0]["speaker"] == 0
         assert topics[1]["words"][1]["speaker"] == 0
+
+
+@pytest.mark.asyncio
+async def test_transcript_reassign_with_participant(fake_transcript_with_topics):
+    from reflector.app import app
+
+    transcript_id = fake_transcript_with_topics.id
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        # check the transcript exists
+        response = await ac.get(f"/transcripts/{transcript_id}")
+        assert response.status_code == 200
+        transcript = response.json()
+        assert len(transcript["participants"]) == 0
+
+        # create 2 participants
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={
+                "name": "Participant 1",
+            },
+        )
+        assert response.status_code == 200
+        participant1_id = response.json()["id"]
+
+        response = await ac.post(
+            f"/transcripts/{transcript_id}/participants",
+            json={
+                "name": "Participant 2",
+            },
+        )
+        assert response.status_code == 200
+        participant2_id = response.json()["id"]
+
+        # check participants speakers
+        response = await ac.get(f"/transcripts/{transcript_id}/participants")
+        assert response.status_code == 200
+        participants = response.json()
+        assert len(participants) == 2
+        assert participants[0]["name"] == "Participant 1"
+        assert participants[0]["speaker"] is None
+        assert participants[1]["name"] == "Participant 2"
+        assert participants[1]["speaker"] is None
+
+        # check initial topics of the transcript
+        response = await ac.get(f"/transcripts/{transcript_id}/topics/with-words")
+        assert response.status_code == 200
+        topics = response.json()
+        assert len(topics) == 2
+
+        # check through words
+        assert topics[0]["words"][0]["speaker"] == 0
+        assert topics[0]["words"][1]["speaker"] == 0
+        assert topics[1]["words"][0]["speaker"] == 0
+        assert topics[1]["words"][1]["speaker"] == 0
+        # check through segments
+        assert len(topics[0]["segments"]) == 1
+        assert topics[0]["segments"][0]["speaker"] == 0
+        assert len(topics[1]["segments"]) == 1
+        assert topics[1]["segments"][0]["speaker"] == 0
+
+        # reassign speaker from a participant
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "participant": participant1_id,
+                "timestamp_from": 0,
+                "timestamp_to": 1,
+            },
+        )
+        assert response.status_code == 200
+
+        # check participants if speaker has been assigned
+        # first participant should have 1, because it's not used yet.
+        response = await ac.get(f"/transcripts/{transcript_id}/participants")
+        assert response.status_code == 200
+        participants = response.json()
+        assert len(participants) == 2
+        assert participants[0]["name"] == "Participant 1"
+        assert participants[0]["speaker"] == 1
+        assert participants[1]["name"] == "Participant 2"
+        assert participants[1]["speaker"] is None
+
+        # check topics again
+        response = await ac.get(f"/transcripts/{transcript_id}/topics/with-words")
+        assert response.status_code == 200
+        topics = response.json()
+        assert len(topics) == 2
+
+        # check through words
+        assert topics[0]["words"][0]["speaker"] == 1
+        assert topics[0]["words"][1]["speaker"] == 1
+        assert topics[1]["words"][0]["speaker"] == 0
+        assert topics[1]["words"][1]["speaker"] == 0
+        # check segments
+        assert len(topics[0]["segments"]) == 1
+        assert topics[0]["segments"][0]["speaker"] == 1
+        assert len(topics[1]["segments"]) == 1
+        assert topics[1]["segments"][0]["speaker"] == 0
+
+        # reassign participant, middle of 2 topics
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "participant": participant2_id,
+                "timestamp_from": 1,
+                "timestamp_to": 2.5,
+            },
+        )
+        assert response.status_code == 200
+
+        # check participants if speaker has been assigned
+        # first participant should have 1, because it's not used yet.
+        response = await ac.get(f"/transcripts/{transcript_id}/participants")
+        assert response.status_code == 200
+        participants = response.json()
+        assert len(participants) == 2
+        assert participants[0]["name"] == "Participant 1"
+        assert participants[0]["speaker"] == 1
+        assert participants[1]["name"] == "Participant 2"
+        assert participants[1]["speaker"] == 2
+
+        # check topics again
+        response = await ac.get(f"/transcripts/{transcript_id}/topics/with-words")
+        assert response.status_code == 200
+        topics = response.json()
+        assert len(topics) == 2
+
+        # check through words
+        assert topics[0]["words"][0]["speaker"] == 1
+        assert topics[0]["words"][1]["speaker"] == 2
+        assert topics[1]["words"][0]["speaker"] == 2
+        assert topics[1]["words"][1]["speaker"] == 0
+        # check segments
+        assert len(topics[0]["segments"]) == 2
+        assert topics[0]["segments"][0]["speaker"] == 1
+        assert topics[0]["segments"][1]["speaker"] == 2
+        assert len(topics[1]["segments"]) == 2
+        assert topics[1]["segments"][0]["speaker"] == 2
+        assert topics[1]["segments"][1]["speaker"] == 0
+
+        # reassign speaker, everything
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "participant": participant1_id,
+                "timestamp_from": 0,
+                "timestamp_to": 100,
+            },
+        )
+        assert response.status_code == 200
+
+        # check topics again
+        response = await ac.get(f"/transcripts/{transcript_id}/topics/with-words")
+        assert response.status_code == 200
+        topics = response.json()
+        assert len(topics) == 2
+
+        # check through words
+        assert topics[0]["words"][0]["speaker"] == 1
+        assert topics[0]["words"][1]["speaker"] == 1
+        assert topics[1]["words"][0]["speaker"] == 1
+        assert topics[1]["words"][1]["speaker"] == 1
+        # check segments
+        assert len(topics[0]["segments"]) == 1
+        assert topics[0]["segments"][0]["speaker"] == 1
+        assert len(topics[1]["segments"]) == 1
+        assert topics[1]["segments"][0]["speaker"] == 1
+
+
+@pytest.mark.asyncio
+async def test_transcript_reassign_edge_cases(fake_transcript_with_topics):
+    from reflector.app import app
+
+    transcript_id = fake_transcript_with_topics.id
+
+    async with AsyncClient(app=app, base_url="http://test/v1") as ac:
+        # check the transcript exists
+        response = await ac.get(f"/transcripts/{transcript_id}")
+        assert response.status_code == 200
+        transcript = response.json()
+        assert len(transcript["participants"]) == 0
+
+        # try reassign without any participant_id or speaker
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "timestamp_from": 0,
+                "timestamp_to": 1,
+            },
+        )
+        assert response.status_code == 400
+
+        # try reassing with both participant_id and speaker
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "participant": "123",
+                "speaker": 1,
+                "timestamp_from": 0,
+                "timestamp_to": 1,
+            },
+        )
+        assert response.status_code == 400
+
+        # try reassing with non-existing participant_id
+        response = await ac.patch(
+            f"/transcripts/{transcript_id}/speaker/assign",
+            json={
+                "participant": "123",
+                "timestamp_from": 0,
+                "timestamp_to": 1,
+            },
+        )
+        assert response.status_code == 404