from typing import List

from Models.FileModel import UserFile
from sqlalchemy.orm import Session
from Schemas import FileSechemas


def get_file_by_md(db: Session, md: str):
    item = db.query(UserFile).filter_by(md=md).first()
    return item


def add_file(db: Session, data: FileSechemas.UserFileCreate):
    new_file = UserFile(**data.dict())
    db.add(new_file)
    db.refresh(new_file)
    return new_file


def file_query(db: Session, params: FileSechemas.UserFileQuery) -> (int, List[UserFile]):
    query = db.query(UserFile)
    if params.md:
        query.filter(UserFile.md == params.md)
    if params.name:
        query.filter(UserFile.name.like(f'%{params.name}%'))
    if params.user_id:
        query.filter(UserFile.user_id == params.user_id)
    if params.common_type:
        query.filter(UserFile.common_type == params.common_type)
    if params.mime_type:
        query.filter(UserFile.mime_type == params.mime_type)
    if params.file_url:
        query.filter(UserFile.file_url == params.file_url)
    count = query.count()
    page = params.page
    page_size = params.page_size
    if page is not None and page_size is not None:
        query = query.offset((page - 1) * page_size).limit(page_size).all()
    return count, query