from fastapi import APIRouter, HTTPException, Depends
from sqlalchemy.orm import Session
from typing import List
from pydantic import BaseModel
from config.database import SessionLocal
from models.distribution import Distribution

router = APIRouter(prefix="/api/distributions", tags=["Distributions"])


def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


class DistributionCreate(BaseModel):
    name: str
    distribution_type: str
    parameters: dict


class DistributionRead(DistributionCreate):
    id: int

    class Config:
        orm_mode = True


@router.post("/", response_model=DistributionRead)
async def create_distribution(dist: DistributionCreate, db: Session = Depends(get_db)):
    db_dist = Distribution(**dist.dict())
    db.add(db_dist)
    db.commit()
    db.refresh(db_dist)
    return db_dist


@router.get("/", response_model=List[DistributionRead])
async def list_distributions(db: Session = Depends(get_db)):
    dists = db.query(Distribution).all()
    return dists