317 lines
12 KiB
Python
317 lines
12 KiB
Python
import asyncio
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import os
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import uuid
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from logging import getLogger
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from typing import Dict, List
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import aiofiles
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from ielts_be.configs.constants import GPTModels, TemperatureSettings, FilePaths
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from ielts_be.dtos.speaking import GradeSpeakingItem
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from ielts_be.helpers import TextHelper
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from ielts_be.repositories import IFileStorage
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from ielts_be.services import ILLMService, ISpeechToTextService
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class GradeSpeaking:
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def __init__(self, llm: ILLMService, file_storage: IFileStorage, stt: ISpeechToTextService):
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self._llm = llm
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self._file_storage = file_storage
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self._stt = stt
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self._logger = getLogger(__name__)
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async def grade_speaking_task(self, task: int, items: List[GradeSpeakingItem]) -> Dict:
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request_id = str(uuid.uuid4())
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self._log(task, request_id, f"Received request to grade speaking task {task}.")
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if task != 2:
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self._log(task, request_id, f'Received {len(items)} total answers.')
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temp_files = []
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try:
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# Save all files first
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temp_files = await asyncio.gather(*[
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self.save_file(item) for item in items
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])
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# Process all transcriptions concurrently (up to 4)
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self._log(task, request_id, 'Starting batch transcription')
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text_answers = await asyncio.gather(*[
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self._stt.speech_to_text(file_path)
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for file_path in temp_files
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])
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for answer in text_answers:
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self._log(task, request_id, f'Transcribed answer: {answer}')
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if not TextHelper.has_x_words(answer, 20):
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self._log(
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task, request_id,
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f'The answer had less words than threshold 20 to be graded. Answer: {answer}'
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)
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return self._zero_rating("The audio recorded does not contain enough english words to be graded.")
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# Get perfect answers
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self._log(task, request_id, 'Requesting perfect answers')
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perfect_answers = await asyncio.gather(*[
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self._get_perfect_answer(task, item.question)
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for item in items
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])
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# Format the responses
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if task in {1, 3}:
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self._log(task, request_id, 'Formatting answers and questions for prompt.')
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formatted_text = ""
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for i, (item, transcribed_answer) in enumerate(zip(items, text_answers), start=1):
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formatted_text += f"**Question {i}:**\n{item.question}\n\n"
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formatted_text += f"**Answer {i}:**\n{transcribed_answer}\n\n"
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self._log(task, request_id, f'Formatted answers and questions for prompt: {formatted_text}')
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questions_and_answers = f'\n\n The questions and answers are: \n\n{formatted_text}'
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else:
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questions_and_answers = f'\n Question: "{items[0].question}" \n Answer: "{text_answers[0]}"'
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self._log(task, request_id, 'Requesting grading of the answer(s).')
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response = await self._grade_task(task, questions_and_answers)
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self._log(task, request_id, f'Answer(s) graded: {response}')
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if task in {1, 3}:
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self._log(task, request_id, 'Adding perfect answer(s) to response.')
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# TODO: check if it is answer["answer"] instead
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for i, answer in enumerate(perfect_answers, start=1):
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response['perfect_answer_' + str(i)] = answer
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self._log(task, request_id, 'Getting speaking corrections in parallel')
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# Get all corrections in parallel
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fixed_texts = await asyncio.gather(*[
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self._get_speaking_corrections(answer)
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for answer in text_answers
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])
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self._log(task, request_id, 'Adding transcript and fixed texts to response.')
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for i, (answer, fixed) in enumerate(zip(text_answers, fixed_texts), start=1):
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response['transcript_' + str(i)] = answer
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response['fixed_text_' + str(i)] = fixed
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else:
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response['transcript'] = text_answers[0]
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self._log(task, request_id, 'Requesting fixed text.')
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response['fixed_text'] = await self._get_speaking_corrections(text_answers[0])
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self._log(task, request_id, f'Fixed text: {response["fixed_text"]}')
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response['perfect_answer'] = perfect_answers[0]["answer"]
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solutions = []
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for file_name in temp_files:
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solutions.append(await self._file_storage.upload_file_firebase_get_url(f'{FilePaths.FIREBASE_SPEAKING_VIDEO_FILES_PATH}{uuid.uuid4()}.wav', file_name))
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response["overall"] = self._fix_speaking_overall(response["overall"], response["task_response"])
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response["solutions"] = solutions
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if task in {1,3}:
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response["answer"] = solutions
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else:
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response["fullPath"] = solutions[0]
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self._log(task, request_id, f'Final response: {response}')
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return response
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finally:
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for file_path in temp_files:
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try:
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if os.path.exists(file_path):
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os.remove(file_path)
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except Exception as e:
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self._log(task, request_id, f'Error cleaning up temp file {file_path}: {str(e)}')
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def _log(self, task: int, request_id: str, message: str):
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self._logger.info(f'POST - speaking_task_{task} - {request_id} - {message}')
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async def _get_perfect_answer(self, task: int, question: str):
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messages = [
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{
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"role": "system",
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"content": (
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'You are a helpful assistant designed to output JSON on this format: {"answer": "perfect answer"}'
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)
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},
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{
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"role": "user",
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"content": (
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'Provide a perfect answer according to ielts grading system to the following '
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f'Speaking Part {task} question: "{question}"'
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)
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}
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]
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if task == 1:
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messages.append({
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"role": "user",
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"content": 'The answer must be 2 or 3 sentences long.'
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})
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gpt_model = GPTModels.GPT_4_O if task == 1 else GPTModels.GPT_3_5_TURBO
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return await self._llm.prediction(
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gpt_model, messages, ["answer"], TemperatureSettings.GRADING_TEMPERATURE
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)
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async def _grade_task(self, task: int, questions_and_answers: str) -> Dict:
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messages = [
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{
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"role": "system",
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"content": (
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f'You are a helpful assistant designed to output JSON on this format: {self._grade_template()}'
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)
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},
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{
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"role": "user",
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"content": (
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f'Evaluate the given Speaking Part {task} response based on the IELTS grading system, ensuring a '
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'strict assessment that penalizes errors. Deduct points for deviations from the task, and '
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'assign a score of 0 if the response fails to address the question. Additionally, provide '
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'detailed commentary highlighting both strengths and weaknesses in the response.'
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) + questions_and_answers
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}
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]
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task_specific = {
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"1": (
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'Address the student as "you". If the answers are not 2 or 3 sentences long, warn the '
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'student that they should be.'
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),
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"2": 'Address the student as "you"',
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"3": 'Address the student as "you" and pay special attention to coherence between the answers.'
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}
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messages.append({
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"role": "user",
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"content": task_specific[str(task)]
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})
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if task in {1, 3}:
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messages.extend([
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{
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"role": "user",
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"content": (
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'For pronunciations act as if you heard the answers and they were transcribed '
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'as you heard them.'
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)
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},
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{
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"role": "user",
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"content": 'The comments must be long, detailed, justify the grading and suggest improvements.'
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}
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])
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return await self._llm.prediction(
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GPTModels.GPT_4_O, messages, ["comment"], TemperatureSettings.GRADING_TEMPERATURE
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)
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@staticmethod
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def _fix_speaking_overall(overall: float, task_response: dict):
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grades = [category["grade"] for category in task_response.values()]
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if overall > max(grades) or overall < min(grades):
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total_sum = sum(grades)
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average = total_sum / len(grades)
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rounded_average = round(average, 0)
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return rounded_average
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return overall
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@staticmethod
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def _zero_rating(comment: str):
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return {
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"comment": comment,
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"overall": 0,
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"task_response": {
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"Fluency and Coherence": {
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"grade": 0.0,
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"comment": ""
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},
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"Lexical Resource": {
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"grade": 0.0,
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"comment": ""
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},
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"Grammatical Range and Accuracy": {
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"grade": 0.0,
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"comment": ""
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},
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"Pronunciation": {
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"grade": 0.0,
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"comment": ""
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}
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}
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}
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async def _get_speaking_corrections(self, text):
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messages = [
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{
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"role": "system",
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"content": (
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'You are a helpful assistant designed to output JSON on this format: '
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'{"fixed_text": "fixed transcription with no misspelling errors"}'
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)
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},
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{
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"role": "user",
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"content": (
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'Fix the errors in the provided transcription and put it in a JSON. '
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f'Do not complete the answer, only replace what is wrong. \n The text: "{text}"'
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)
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}
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]
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response = await self._llm.prediction(
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GPTModels.GPT_3_5_TURBO,
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messages,
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["fixed_text"],
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0.2,
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False
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)
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return response["fixed_text"]
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@staticmethod
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def _grade_template():
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return {
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"comment": "extensive comment about answer quality",
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"overall": 0.0,
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"task_response": {
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"Fluency and Coherence": {
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"grade": 0.0,
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"comment": (
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"extensive comment about fluency and coherence, use examples to justify the grade awarded."
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)
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},
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"Lexical Resource": {
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"grade": 0.0,
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"comment": "extensive comment about lexical resource, use examples to justify the grade awarded."
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},
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"Grammatical Range and Accuracy": {
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"grade": 0.0,
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"comment": (
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"extensive comment about grammatical range and accuracy, use examples to justify the "
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"grade awarded."
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)
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},
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"Pronunciation": {
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"grade": 0.0,
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"comment": (
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"extensive comment about pronunciation on the transcribed answer, use examples to justify the "
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"grade awarded."
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)
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}
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}
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}
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@staticmethod
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async def save_file(item: GradeSpeakingItem) -> str:
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sound_file_name = "tmp/" + str(uuid.uuid4())
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content = await item.answer.read()
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async with aiofiles.open(sound_file_name, 'wb') as f:
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await f.write(content)
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return sound_file_name
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