Files
encoach_backend_v4/custom_addons/encoach_ai/services/whisper_service.py
Yamen Ahmad 6a62a43d61 feat: Generation Page AI workflows + AI/Vector modules + exam session fixes
Generation Page (complete rebuild):
- Full production-parity exam generation wizard with 4 IELTS modules
- Reading: AI passage gen, 5 exercise types (MCQ, Fill, Write, T/F, Match)
- Listening: 4 section types, AI context gen, TTS audio gen (ElevenLabs)
- Writing: Task 1/2, AI instruction gen, word limits, marks
- Speaking: 3 parts, AI script gen, avatar video gen (7 avatars)
- Per-module config: timer, CEFR difficulty, access, approval, rubrics
- Exam submission workflow (draft/published)

Exam Structures:
- New encoach.exam.structure model + CRUD controller
- ExamStructuresPage wired to real API

AI Module (encoach_ai):
- OpenAI service, ElevenLabs TTS, AWS Polly, ELAI avatars
- AI settings model with Odoo config parameters
- 7 generation endpoints (passage, exercises, instructions, scripts, context)

Vector Module (encoach_vector):
- pgvector integration for RAG-based content search
- Embedding service with sentence-transformers

Exam Session Fixes:
- Fixed ExamSession.tsx field mapping (question_type→type, exam_title→title)
- Fixed submit payload to include attempt_id and answers
- Fixed normalizeType to handle null/undefined

Tested: 12/12 API tests passed, browser-verified with real OpenAI calls
Made-with: Cursor
2026-04-11 14:27:03 +04:00

111 lines
3.6 KiB
Python

"""OpenAI Whisper speech-to-text service."""
import logging
import tempfile
import time
_logger = logging.getLogger(__name__)
try:
import whisper as _whisper_mod
except ImportError:
_whisper_mod = None
try:
import openai as _openai_mod
except ImportError:
_openai_mod = None
class WhisperService:
"""Speech-to-text via local Whisper model or OpenAI Whisper API."""
def __init__(self, env):
self.env = env
self._get_param = env["ir.config_parameter"].sudo().get_param
self._local_model = None
api_key = self._get_param("encoach_ai.openai_api_key", "")
if not api_key:
import os
api_key = os.environ.get("OPENAI_API_KEY", "")
self._api_key = api_key
def _get_local_model(self):
if not _whisper_mod:
return None
if self._local_model is None:
self._local_model = _whisper_mod.load_model("base")
return self._local_model
def _log(self, action, latency, status="success", error=None):
try:
self.env["encoach.ai.log"].sudo().create({
"service": "whisper",
"action": action,
"latency_ms": latency,
"status": status,
"error_message": error,
})
except Exception:
pass
def transcribe(self, audio_data, *, language="en", use_api=False):
"""Transcribe audio bytes to text.
Args:
audio_data: Raw audio bytes (wav, mp3, webm, etc.)
language: Language code
use_api: If True, use OpenAI Whisper API instead of local model
Returns:
dict with 'text', 'language', 'segments' keys
"""
t0 = time.time()
if use_api and self._api_key and _openai_mod:
return self._transcribe_api(audio_data, language, t0)
model = self._get_local_model()
if model:
return self._transcribe_local(model, audio_data, language, t0)
if self._api_key and _openai_mod:
return self._transcribe_api(audio_data, language, t0)
raise RuntimeError("Whisper not available — install whisper package or set OpenAI API key")
def _transcribe_local(self, model, audio_data, language, t0):
with tempfile.NamedTemporaryFile(suffix=".webm", delete=True) as tmp:
tmp.write(audio_data)
tmp.flush()
result = model.transcribe(tmp.name, language=language)
latency = int((time.time() - t0) * 1000)
self._log("transcribe_local", latency)
return {
"text": result["text"].strip(),
"language": result.get("language", language),
"segments": [
{"start": s["start"], "end": s["end"], "text": s["text"]}
for s in result.get("segments", [])
],
}
def _transcribe_api(self, audio_data, language, t0):
client = _openai_mod.OpenAI(api_key=self._api_key)
with tempfile.NamedTemporaryFile(suffix=".webm", delete=True) as tmp:
tmp.write(audio_data)
tmp.flush()
tmp.seek(0)
result = client.audio.transcriptions.create(
model="whisper-1",
file=tmp,
language=language,
response_format="verbose_json",
)
latency = int((time.time() - t0) * 1000)
self._log("transcribe_api", latency)
return {
"text": result.text.strip() if hasattr(result, "text") else str(result),
"language": language,
"segments": getattr(result, "segments", []),
}