transcription-cost-usage-report/backend/app/schemas/transcription_schema.py

from pydantic import BaseModel, Field
from typing import List, Optional, Literal

class TranscriptionRequest(BaseModel):
    company_id: str
    start_date: str
    end_date: str  
    who: Literal['hit', 'client']
    totalCost: Optional[Literal['true', 'false']]