from sqlalchemy.orm import Session
from sqlalchemy import desc, update

from app.model.bussiness_model import ProjectInfo
from app.model.schemas.project_info_schemas import ProjectInfoOut
from app.model.schemas.project_info_schemas import ProjectInfoPager
from app.db.page_util import get_pager


def get_project_pager(info: ProjectInfoPager, session: Session):
    """分页查询项目信息"""
    query = session.query(ProjectInfo).order_by(desc(ProjectInfo.id))
    filters = []
    if info.project_name is not None:
        filters.append(ProjectInfo.project_name.ilike(f"%{info.project_name}%"))
    if len(filters) > 0:
        query.filter(*filters)
    pager = get_pager(query, info.pagerNum, info.pagerSize)
    pager.data = [ProjectInfoOut.from_orm(info).dict() for info in pager.data]
    return pager


def get_project_by_id(project_id: str, session: Session):
    info = session.query(ProjectInfo).filter_by(id=project_id).first()
    info_out = ProjectInfoOut.from_orm(info)
    return info_out


def add_project(info: ProjectInfo, session: Session):
    """新建项目,并在对应文件夹下面创建文件夹"""
    session.add(info)
    session.commit()
    return info


def check_project_name(project_name: str, session: Session):
    """检验是否存在重名的项目名称"""
    count = session.query(ProjectInfo).filter(ProjectInfo.project_name == project_name).count()
    if count > 0:
        return True
    else:
        return False


def update_project_status(project_id: int, project_status: str, session: Session):
    """
    更新项目训练状态,如果是已完成的话，train_version自动+1
    :param project_id:
    :param project_status: 0-未运行，1-运行中，2-已完成,-1-执行失败
    :param session:
    :return:
    """
    if project_status == '2':
        stmt = update(ProjectInfo).where(ProjectInfo.id == project_id).values({
            'train_status': project_status,
            'train_version': ProjectInfo.train_version + 1
        })
        session.execute(stmt)
    else:
        stmt = update(ProjectInfo).where(ProjectInfo.id == project_id).values({
            'train_status': project_status
        })
        session.execute(stmt)
    session.commit()