from pydantic import BaseModel
from typing import Optional, List
from datetime import datetime

class ScanRequest(BaseModel):
    barcode: str

class IngredientAnalysis(BaseModel):
    name: str
    popular_name: Optional[str] = None
    explanation: str
    classification: str  # "good", "warning", "bad"
    reason: str

class ScanResult(BaseModel):
    barcode: str
    product_name: Optional[str] = None
    brand: Optional[str] = None
    category: Optional[str] = None
    image_url: Optional[str] = None
    score: int
    summary: str
    positives: List[str]
    negatives: List[str]
    ingredients: List[IngredientAnalysis]
    nutri_score: Optional[str] = None
    nova_group: Optional[int] = None
    source: str = "open_food_facts"

class ScanHistoryItem(BaseModel):
    id: int
    barcode: str
    product_name: Optional[str] = None
    brand: Optional[str] = None
    score: int
    scanned_at: datetime