CameraMachine/python/databases.py

from networkx.algorithms.components import connected
from sqlmodel import Field, Session, SQLModel, create_engine, select
from typing import Dict
from datetime import datetime
from typing import Optional
import json
from sqlalchemy import and_, asc,desc
from model import DeviceConfig, PhotoRecord


# 创建SQLite数据库引擎
sqlite_file_name = "database.db"
sqlite_url = f"sqlite:///{sqlite_file_name}"
engine = create_engine(sqlite_url, echo=True)

# 创建表
def create_all_database():
    SQLModel.metadata.create_all(engine)
# 创建会话
def __get_session():
    with Session(engine) as session:
        yield session


def batch_insert_device_configs(session: Session, data_list: list):
    '''批量插入数据到设备配置表'''
    for data in data_list:
        device_config = DeviceConfig(**data)
        session.add(device_config)
    session.commit()


# 创建一个通用的 CRUD 类
class CRUD:
    def __init__(self, model):
        self.model = model

    def create(self, session: Session, obj_in):
        obj_in_data = dict(obj_in)
        db_obj = self.model(**obj_in_data)
        session.add(db_obj)
        session.commit()
        session.refresh(db_obj)
        return db_obj

    def read(
            self,
            session: Session,
            conditions: Optional[Dict] = None,
            order_by: Optional[str] = None,
            ascending: bool = True,
    ):
        query = select(self.model)
        if conditions:
            query = query.where(and_(*(getattr(self.model, key) == value for key, value in conditions.items())))
        if order_by:
            if ascending:
                query = query.order_by(asc(getattr(self.model, order_by)))
            else:
                query = query.order_by(desc(getattr(self.model, order_by)))
        return session.exec(query).first()

    def read_all(
        self,
        session: Session,
        conditions: Optional[Dict] = None,
        order_by: Optional[str] = None,
        ascending: bool = True,
    ):
        query = select(self.model)
        if conditions:
            query = query.where(and_(*(getattr(self.model, key) == value for key, value in conditions.items())))
        if order_by:
            if ascending:
                query = query.order_by(asc(getattr(self.model, order_by)))
            else:
                query = query.order_by(desc(getattr(self.model, order_by)))
        return session.exec(query).all()

    def update(self, session: Session, obj_id: int, **kwargs):
        db_obj = session.get(self.model, obj_id)
        for key, value in kwargs.items():
            if value == None or value =="":
                continue
            setattr(db_obj, key, value)
        session.commit()
        session.refresh(db_obj)
        return db_obj

    def delete(self, session: Session, obj_id: int):
        db_obj = session.get(self.model, obj_id)
        session.delete(db_obj)
        session.commit()

def SqlQuery():
    return next(__get_session())

# 使用示例
if __name__ == "__main__":
    pass
    # 使用 next 函数从生成器中获取 Session 对象
    # session = SqlQuery()

    # 创建 CRUD 实例
    # device_config_crud = CRUD(DeviceConfig)

    # 创建新记录
    # new_device_config = DeviceConfig(
    #     mode_type="example_mode",
    #     execution_type="example_execution",
    #     action_name="example_action",
    #     action_index=1,
    #     picture_index=1,
    #     camera_height=100,
    #     camera_angle=45.5,
    #     number_focus=2,
    #     take_picture=True,
    #     turntable_position=10.0,
    #     turntable_angle=30.5,
    #     shoe_upturn=False,
    #     pre_delay=1.5,
    #     after_delay=2.5,
    #     led_switch=True,
    #     is_wait=False,
    # )
    # created_device_config = device_config_crud.create(session, new_device_config)
    # print(f"Created Device Config: {created_device_config}")

    # 读取记录
    # read_device = device_config_crud.read(session, 1)
    # print(f"Read Device Config: {read_device.model_dump()}")

    # 读取所有记录
    # all_devices = device_config_crud.read_all(session, conditions={"id": 2})
    # print(f"All Device Configs: {[device.model_dump() for device in all_devices]}")

    # # 更新记录
    # updated_device = device_config_crud.update(
    #     session, created_device_config.id, mode_type="updated_mode"
    # )
    # print(f"Updated Device Config: {updated_device}")

    # # 删除记录
    # device_config_crud.delete(session, created_device_config.id)
    # print("Device Config deleted.")