105 lines
2.9 KiB
Python

from collections.abc import Callable
from logging import Logger
from typing import Generic, TypeVar
from fastapi import HTTPException, status
from pydantic import UUID4, BaseModel
from mealie.repos.repository_generic import RepositoryGeneric
from mealie.schema.response import ErrorResponse
C = TypeVar("C", bound=BaseModel)
R = TypeVar("R", bound=BaseModel)
U = TypeVar("U", bound=BaseModel)
class HttpRepo(Generic[C, R, U]):
"""
The HttpRepo[C, R, U] class is a mixin class that provides a common set of methods for CRUD operations.
This class is intended to be used in a composition pattern where a class has a mixin property. For example:
```
class MyClass:
def __init__(self, repo, logger):
self.mixins = HttpRepo(repo, logger)
```
"""
repo: RepositoryGeneric
exception_msgs: Callable[[type[Exception]], str] | None
default_message: str = "An unexpected error occurred."
def __init__(
self,
repo: RepositoryGeneric,
logger: Logger,
default_message: str | None = None,
) -> None:
self.repo = repo
self.logger = logger
if default_message:
self.default_message = default_message
def handle_exception(self, ex: Exception) -> None:
# Cleanup
self.logger.exception(ex)
self.repo.session.rollback()
raise ex
def create_one(self, data: C) -> R | None:
item: R | None = None
try:
item = self.repo.create(data)
except Exception as ex:
self.handle_exception(ex)
return item
def get_one(self, item_id: int | str | UUID4, key: str | None = None) -> R:
item = self.repo.get_one(item_id, key)
if not item:
raise HTTPException(
status.HTTP_404_NOT_FOUND,
detail=ErrorResponse.respond(message="Not found."),
)
return item
def update_one(self, data: U, item_id: int | str | UUID4) -> R:
item = self.repo.get_one(item_id)
if not item:
raise HTTPException(
status.HTTP_404_NOT_FOUND,
detail=ErrorResponse.respond(message="Not found."),
)
try:
item = self.repo.update(item_id, data) # type: ignore
except Exception as ex:
self.handle_exception(ex)
return item
def patch_one(self, data: U, item_id: int | str | UUID4) -> None:
self.repo.get_one(item_id)
try:
self.repo.patch(item_id, data.dict(exclude_unset=True, exclude_defaults=True))
except Exception as ex:
self.handle_exception(ex)
def delete_one(self, item_id: int | str | UUID4) -> R | None:
item: R | None = None
try:
item = self.repo.delete(item_id)
self.logger.info(f"Deleting item with id {item_id}")
except Exception as ex:
self.handle_exception(ex)
return item