import logging

from fastapi import APIRouter, Depends
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.database import get_db
from app.models.material import Material
from app.schemas.material import MaterialResponse, MaterialProperties

logger = logging.getLogger("app.routers.materials")

router = APIRouter()


@router.get("/materials", response_model=list[MaterialResponse])
async def get_materials(db: AsyncSession = Depends(get_db)):
    logger.info("GET /api/materials")

    result = await db.execute(select(Material).where(Material.is_active == True).order_by(Material.id))
    materials = result.scalars().all()
    logger.info("Found %d active materials", len(materials))

    response = [
        MaterialResponse(
            id=m.id,
            name=m.name,
            category=m.category,
            price_per_gram=m.price_per_gram,
            density_g_cm3=m.density_g_cm3,
            flow_rate_mm3_s=m.flow_rate_mm3_s,
            properties=MaterialProperties(
                max_temp_c=m.max_temp_c,
                min_temp_c=m.min_temp_c,
                strength=m.strength,
                flexibility=m.flexibility,
                chemical_resistance=m.chemical_resistance,
                uv_resistance=m.uv_resistance,
                food_safe=m.food_safe,
            ),
            description=m.description,
            color_options=m.color_options or [],
        )
        for m in materials
    ]

    for m in materials:
        logger.debug("  Material: id=%d, name=%s, category=%s, price=%.1f RUB/g",
                      m.id, m.name, m.category, m.price_per_gram)

    logger.info("Returning %d materials", len(response))
    return response