"""Category request / response schemas."""

from __future__ import annotations

from datetime import datetime
from typing import Optional

from pydantic import BaseModel, Field


class CategoryBase(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    description: str = Field(..., min_length=1, max_length=500)
    icon: str = Field(default="tag", max_length=50)
    slug: str = Field(..., min_length=1, max_length=100, pattern="^[a-z0-9]+(?:-[a-z0-9]+)*$")


class CategoryCreate(CategoryBase):
    pass


class CategoryUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    description: Optional[str] = Field(None, min_length=1, max_length=500)
    icon: Optional[str] = Field(None, max_length=50)
    slug: Optional[str] = Field(None, min_length=1, max_length=100, pattern="^[a-z0-9]+(?:-[a-z0-9]+)*$")


class CategoryResponse(BaseModel):
    id: str
    name: str
    description: str
    icon: str
    slug: str
    listing_count: int = 0
    created_at: datetime
    updated_at: Optional[datetime] = None

    model_config = {"from_attributes": True}


class CategoryListResponse(BaseModel):
    categories: list[CategoryResponse]
    total: int