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111 lines
3.8 KiB
Python
111 lines
3.8 KiB
Python
# Copyright 2023 Declan Teevan
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from datetime import datetime
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from typing import List, Optional
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from pydantic import BaseModel
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from google.protobuf import timestamp_pb2
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from comment_service.models.proto import comment_pb2
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from comment_service.models.exceptions import ServiceException, ServiceErrorCode
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# Validators
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def is_valid_comment_msg(message: str) -> bool:
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if len(message) < 3 or len(message) > 512:
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return False
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return True
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# Service Models
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class Comment(BaseModel):
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id: int
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post_id: str
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author_id: str
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message: str
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created_at: datetime
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updated_at: Optional[datetime] = None
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@classmethod
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def to_protobuf(cls, comment: "Comment") -> comment_pb2.Comment:
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created_at = timestamp_pb2.Timestamp()
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created_at.FromDatetime(comment.created_at)
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updated_at = None
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if comment.updated_at is not None:
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updated_at = timestamp_pb2.Timestamp()
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updated_at.FromDatetime(comment.updated_at)
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return comment_pb2.Comment(
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id=str(comment.id),
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post_id=comment.post_id,
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author_id=comment.author_id,
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message=comment.message,
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created_at=created_at,
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updated_at=updated_at,
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)
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class CommentCreate(BaseModel):
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post_id: str
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author_id: str
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message: str # todo: validation on message (wrap validator for is_valid_comment_msg)
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@classmethod
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def from_protobuf(cls, request: comment_pb2.CreateCommentRequest) -> "CommentCreate":
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return cls(
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post_id=request.post_id,
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author_id=request.author_id,
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message=request.data.message,
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)
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class CommentUpdate(BaseModel):
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message: Optional[str] = None # todo: validation on message (if set use validator is_valid_comment_msg)
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@classmethod
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def from_protobuf(cls, request: comment_pb2.UpdateCommentRequest) -> "CommentUpdate":
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return cls(
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message=request.data.message
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)
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# Repository Interfaces
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class CommentRepository:
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async def get_comment(self, comment_id: int) -> Comment:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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async def get_post_comments(self, post_id: str) -> List[Comment]:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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async def create_comment(self, data: CommentCreate) -> Comment:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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async def update_comment(self, comment_id: int, data: CommentUpdate) -> Comment:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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async def delete_comment(self, comment_id: int) -> None:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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class CommentDBRepository(CommentRepository):
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async def delete_post_comments(self, post_id: str) -> None:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR)
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async def delete_user_comments(self, user_id: str) -> None:
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raise ServiceException("unimplemented internal repository method", ServiceErrorCode.SERVICE_ERROR) |