import json
from pydantic import BaseModel, field_validator
from typing import Optional, Any, Dict
from datetime import datetime


class TroovSessionBase(BaseModel):
    slot_date: str
    slot_time: str
    session_id: str
    source: str
    data: Optional[Dict[str, Any]] = None
    status: str = "pending"
    
            
    @field_validator("data", mode="before")
    def normalize_json_field(cls, v):
        if v is None:
            return None
        if isinstance(v, str):
            try:
                return json.loads(v)
            except Exception:
                return {}
        return v


class TroovSessionCreate(TroovSessionBase):
    pass


class TroovSessionUpdate(BaseModel):
    slot_date: Optional[str] = None
    slot_time: Optional[str] = None
    session_id: Optional[str] = None
    source: Optional[str] = None
    data: Optional[Dict[str, Any]] = None
    status: Optional[str] = None


class TroovSessionOut(TroovSessionBase):
    created_at: datetime
    updated_at: datetime
    model_config = {
        "from_attributes": True
    }