from __future__ import annotations

from decimal import Decimal
from typing import List, Optional
from uuid import UUID

from pydantic import BaseModel, Field, field_validator


class IngredientBase(BaseModel):
    name: str = Field(min_length=1, max_length=200)
    aliases: List[str] = Field(default_factory=list)
    aisle: Optional[str] = Field(default=None, max_length=100)
    unit: Optional[str] = Field(default=None, max_length=50)
    typical_price: Optional[Decimal] = None

    @field_validator("aliases")
    @classmethod
    def _strip_and_drop_empty(cls, v: List[str]) -> List[str]:
        return [s.strip() for s in v if s and s.strip()]


class IngredientCreate(IngredientBase):
    pass


class IngredientUpdate(BaseModel):
    name: Optional[str] = Field(default=None, min_length=1, max_length=200)
    aliases: Optional[List[str]] = None
    aisle: Optional[str] = Field(default=None, max_length=100)
    unit: Optional[str] = Field(default=None, max_length=50)
    typical_price: Optional[Decimal] = None

    @field_validator("aliases")
    @classmethod
    def _strip_and_drop_empty(cls, v: Optional[List[str]]) -> Optional[List[str]]:
        if v is None:
            return None
        return [s.strip() for s in v if s and s.strip()]


class IngredientRead(IngredientBase):
    id: UUID

    model_config = {"from_attributes": True}


class IngredientGroceryMatchRead(BaseModel):
    id: UUID
    ingredient_id: UUID
    grocery_item_id: UUID
    confidence: Decimal
    source: str
    grocery_item_name: Optional[str] = None
    current_price: Optional[Decimal] = None
    regular_price: Optional[Decimal] = None
    is_on_sale: Optional[bool] = None

    model_config = {"from_attributes": True}