from sqlalchemy.orm import Session
from . import Schemas
from .Models import InstitutionUser
from sqlalchemy import and_


def institution_user_add(db: Session, data: Schemas.InstitutionUserAddInfo):
    item = InstitutionUser(**data.dict())
    db.add(item)
    db.commit()
    db.refresh(item)
    return item


def institution_user_delete(db: Session, item_id: str):
    db.query(InstitutionUser).filter_by(id=item_id).delete()
    db.commit()


def institution_user_update(db: Session, data: Schemas.InstitutionUserUpdateInfo):
    db.query(InstitutionUser).filter_by(id=data.id).update({key: v for key, v in data.dict().items() if v is not None})
    db.commit()
    item = db.query(InstitutionUser).filter_by(id=data.id).first()
    return item


def institution_user_get(db: Session, item_id: str):
    item = db.query(InstitutionUser).filter_by(id=item_id).first()
    return item


def institution_user_get_by_email(db: Session, email: str):
    item = db.query(InstitutionUser).filter_by(email=email).first()
    return item


def institution_user_get_by_institution_name(db: Session, institution_name: str):
    item = db.query(InstitutionUser).filter_by(institution_name=institution_name).first()
    return item


def institution_user_query(db: Session, params: Schemas.InstitutionUserQuery):
    params_dict = params.dict()
    query = db.query(InstitutionUser)
    db_model = InstitutionUser
    for key, value in params_dict.items():
        if key not in ['page', 'page_size'] and value is not None:
            if type(value) == str:
                query = query.filter(getattr(db_model, key).like(f'%{value}%'))
            elif type(value) in [int, float, bool]:
                query = query.filter_by(**{key: value})
            else:
                query = query.filter(getattr(db_model, key) == value)
    count = query.count()
    page = None
    page_size = None
    if 'page' in params_dict:
        page = params_dict['page']
    if 'page_size' in params_dict:
        page_size = params_dict['page_size']
        # 页数不超过100
    if page is not None and page_size is not None:
        page_size = min(page_size, 100)
        query = query.offset((page - 1) * page_size).limit(page_size).all()
    return count, query


def login_by_passwd_check(db: Session, email: str, passwd_hashed: str):
    return db.query(InstitutionUser).filter(and_(InstitutionUser.email == email, InstitutionUser.passwd == passwd_hashed)).first()
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