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)