from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from typing import List

# database
from database import get_db
from models.Patients import Patients
from schemas.CreateSchemas import PatientCreate
from schemas.ResponseSchemas import Patient

router = APIRouter()


@router.get("/", response_model=List[Patient])
def read_patients(
    name: str | None = None,
    dob: str | None = None,
    skip: int = 0,
    limit: int = 100,
    db: Session = Depends(get_db),
):
    """
    Get a list of patients with optional pagination.
    """
    query = db.query(Patients)
    if name:
        query = query.filter(Patients.name.ilike(f"%{name}%"))
    if dob:
        query = query.filter(Patients.dob == dob)
    patients = query.offset(skip).limit(limit).all()
    return patients


@router.post("/", response_model=Patient, status_code=status.HTTP_201_CREATED)
def create_patient(patient: PatientCreate, db: Session = Depends(get_db)):
    """
    Create a new patient.
    """
    try:
        db_patient = Patients(**patient.model_dump())
        db.add(db_patient)
        db.commit()
        db.refresh(db_patient)
        return db_patient
    except Exception as e:
        db.rollback()
        raise HTTPException(
            status_code=500,
            detail=str(e.__cause__),
        ) from e