Update generated backend for blog_app with entities: posts, comments, tags, user

app/api/core/dependencies/dependencies.py

@@ -0,0 +1,8 @@
+from sqlalchemy.orm import Session
+from app.api.db.database import SessionLocal
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/api/core/middleware/activity_tracker.py

@@ -0,0 +1,12 @@
+import time
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.requests import Request
+from starlette.responses import Response
+from loguru import logger
+class ActivityTrackerMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        start_time = time.time()
+        response = await call_next(request)
+        process_time = time.time() - start_time
+        logger.info(f'{request.method} {request.url} - Process Time: {process_time:.6f} seconds')
+        return response

app/api/db/database.py

@@ -0,0 +1,7 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+SQLALCHEMY_DATABASE_URL = 'sqlite:///./blog_app.db'
+engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={'check_same_thread': False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+Base = declarative_base()

app/api/v1/models/comments.py

@@ -0,0 +1,28 @@
+Here's the `comments.py` file for the `app/api/v1/models/` directory of the `blog_app_svkgt` FastAPI backend, defining a SQLAlchemy model for comments:
+
+from sqlalchemy import Column, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+
+from app.db import Base
+
+class Comment(Base):
+    __tablename__ = "comments"
+
+    id = Column(Integer, primary_key=True, index=True)
+    content = Column(Text, nullable=False)
+    author = Column(String, nullable=False)
+    post_id = Column(Integer, ForeignKey("posts.id"), nullable=False)
+
+    post = relationship("Post", back_populates="comments")
+
+    def __repr__(self):
+        return f"Comment(id={self.id}, content='{self.content[:20]}...', author='{self.author}', post_id={self.post_id})"
+
+This code defines a `Comment` model that inherits from the `Base` class provided by SQLAlchemy. The `Comment` model has the following fields:
+
+
+
+
+This model assumes that there is a `Post` model defined elsewhere in the project, which has a corresponding one-to-many relationship with the `Comment` model (i.e., one post can have multiple comments).
+
+Make sure to import the necessary modules (`sqlalchemy` and `app.db`) at the beginning of the file, and update the import paths if necessary to match your project structure.

app/api/v1/models/posts.py

@@ -0,0 +1,31 @@
+Here's the `posts.py` file for the `blog_app_svkgt` FastAPI backend, defining a SQLAlchemy model for posts:
+
+
+from sqlalchemy import Column, Integer, String, Text, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql.sqltypes import TIMESTAMP
+from sqlalchemy.sql import func
+
+from app.db import Base
+
+class Post(Base):
+    __tablename__ = "posts"
+
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String, nullable=False)
+    content = Column(Text, nullable=False)
+    created_at = Column(TIMESTAMP, server_default=func.now())
+    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())
+    user_id = Column(Integer, ForeignKey("users.id"))
+
+    user = relationship("User", back_populates="posts")
+
+    def __repr__(self):
+        return f"Post(id={self.id}, title='{self.title}', content='{self.content[:20]}...')"
+
+Explanation:
+
+5. The `title` column is a `String` column marked as `nullable=False`, meaning it cannot be null.
+6. The `content` column is a `Text` column marked as `nullable=False`, allowing for longer text content.
+7. The `created_at` column is a `TIMESTAMP` column with a default value set to the current server time using `func.now()`.
+8. The `updated_at` column is a `TIMESTAMP` column with a default value set to the current server time using `func.now()`, and it will be updated with the current time whenever the row is updated using `onupdate=func.now()`.

app/api/v1/models/tags.py

@@ -0,0 +1,27 @@
+Here's the `tags.py` file with a SQLAlchemy model for tags:
+
+
+from sqlalchemy import Column, Integer, String
+from app.db.base_class import Base
+
+class Tag(Base):
+    __tablename__ = "tags"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, unique=True, index=True)
+    description = Column(String, nullable=True)
+
+    def __repr__(self):
+        return f"Tag(id={self.id}, name='{self.name}', description='{self.description}')"
+
+Explanation:
+
+1. We import the necessary modules from SQLAlchemy: `Column`, `Integer`, and `String`.
+2. We also import the `Base` class from `app.db.base_class`, which is a common pattern in FastAPI projects using SQLAlchemy. This `Base` class is typically defined in a separate file (`base_class.py`) and serves as the base class for all SQLAlchemy models.
+5. We define three columns for the `Tag` model:
+   - `id`: An integer primary key and index column for the tag's unique identifier.
+   - `name`: A string column for the tag's name, which must be unique and indexed.
+   - `description`: An optional string column for the tag's description, which can be `None`.
+
+
+Note: Make sure to place this `tags.py` file in the `app/api/v1/models/` directory, following the specified project structure.

app/api/v1/models/user.py

@@ -0,0 +1,30 @@
+Here's the `user.py` file for the `app/api/v1/models/` directory, defining a SQLAlchemy model for the User entity in the `blog_app_svkgt` FastAPI backend:
+
+
+from sqlalchemy import Column, Integer, String, Boolean
+from app.db.base_class import Base
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_active = Column(Boolean, default=True)
+    is_superuser = Column(Boolean, default=False)
+    full_name = Column(String, index=True)
+
+    def __repr__(self):
+        return f"User(id={self.id}, email={self.email}, full_name={self.full_name})"
+
+Explanation:
+
+3. The model has the following columns:
+   - `id`: An integer primary key column for uniquely identifying each user.
+   - `email`: A string column for storing the user's email address. It is set as unique and indexed for efficient lookups.
+   - `hashed_password`: A string column for storing the hashed password of the user.
+   - `is_active`: A boolean column indicating whether the user account is active or not. By default, it is set to `True`.
+   - `is_superuser`: A boolean column indicating whether the user has superuser privileges or not. By default, it is set to `False`.
+   - `full_name`: A string column for storing the user's full name. It is indexed for efficient lookups.
+
+Note: This model assumes that you have a `Base` class defined in `app.db.base_class` module, which is typically created using the SQLAlchemy declarative base. You may need to adjust the import statement and the `Base` class according to your project's structure and database configuration.

app/api/v1/routes/__init__.py

@@ -0,0 +1,2 @@
+from fastapi import APIRouter
+router = APIRouter()

app/api/v1/routes/comments.py

@@ -0,0 +1,55 @@
+from typing import List
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from app.db import get_db
+from app.models import Comment
+from app.schemas import CommentCreate, CommentResponse
+
+router = APIRouter(
+    prefix="/comments",
+    tags=["Comments"],
+
+@router.post("/", response_model=CommentResponse, status_code=status.HTTP_201_CREATED)
+def create_comment(comment: CommentCreate, db: Session = Depends(get_db)):
+    new_comment = Comment(**comment.dict())
+    db.add(new_comment)
+    db.commit()
+    db.refresh(new_comment)
+    return new_comment
+
+@router.get("/", response_model=List[CommentResponse])
+def get_all_comments(db: Session = Depends(get_db)):
+    comments = db.query(Comment).all()
+    return comments
+
+@router.get("/{comment_id}", response_model=CommentResponse)
+def get_comment(comment_id: int, db: Session = Depends(get_db)):
+    comment = db.query(Comment).filter(Comment.id == comment_id).first()
+    if not comment:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Comment not found")
+    return comment
+
+@router.put("/{comment_id}", response_model=CommentResponse)
+def update_comment(comment_id: int, comment: CommentCreate, db: Session = Depends(get_db)):
+    db_comment = db.query(Comment).filter(Comment.id == comment_id).first()
+    if not db_comment:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Comment not found")
+    db_comment.text = comment.text
+    db.commit()
+    db.refresh(db_comment)
+    return db_comment
+
+@router.delete("/{comment_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_comment(comment_id: int, db: Session = Depends(get_db)):
+    comment = db.query(Comment).filter(Comment.id == comment_id).first()
+    if not comment:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Comment not found")
+    db.delete(comment)
+    db.commit()
+    return
+
+This code defines a `router` object with the prefix `/comments` and the tag `"Comments"`. The router contains the following endpoints:
+
+
+
+Note: You'll need to define the `Comment`, `CommentCreate`, and `CommentResponse` models and schemas in the appropriate files (`models.py` and `schemas.py`) for this code to work correctly.

app/api/v1/routes/posts.py

@@ -0,0 +1,57 @@
+from typing import List
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from app.db import get_db
+from app.models import Post
+from app.schemas import PostCreate, PostResponse
+
+router = APIRouter(
+    prefix="/posts",
+    tags=["Posts"],
+
+@router.post("/", response_model=PostResponse, status_code=status.HTTP_201_CREATED)
+def create_post(post: PostCreate, db: Session = Depends(get_db)):
+    new_post = Post(**post.dict())
+    db.add(new_post)
+    db.commit()
+    db.refresh(new_post)
+    return new_post
+
+@router.get("/", response_model=List[PostResponse])
+def get_all_posts(db: Session = Depends(get_db)):
+    posts = db.query(Post).all()
+    return posts
+
+@router.get("/{post_id}", response_model=PostResponse)
+def get_post(post_id: int, db: Session = Depends(get_db)):
+    post = db.query(Post).filter(Post.id == post_id).first()
+    if not post:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Post not found")
+    return post
+
+@router.put("/{post_id}", response_model=PostResponse)
+def update_post(post_id: int, post: PostCreate, db: Session = Depends(get_db)):
+    db_post = db.query(Post).filter(Post.id == post_id).first()
+    if not db_post:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Post not found")
+    update_data = post.dict(exclude_unset=True)
+    for key, value in update_data.items():
+        setattr(db_post, key, value)
+    db.commit()
+    db.refresh(db_post)
+    return db_post
+
+@router.delete("/{post_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_post(post_id: int, db: Session = Depends(get_db)):
+    post = db.query(Post).filter(Post.id == post_id).first()
+    if not post:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Post not found")
+    db.delete(post)
+    db.commit()
+    return
+
+This file defines the following endpoints:
+
+
+
+Note that you'll need to define the `Post` model and `PostCreate` and `PostResponse` schemas in separate files (`models.py` and `schemas.py`, respectively) for this code to work.

app/api/v1/routes/tags.py

@@ -0,0 +1,59 @@
+from typing import List
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from app.db import get_db
+from app import models, schemas
+
+router = APIRouter(
+    prefix="/tags",
+    tags=["Tags"],
+
+@router.get("/", response_model=List[schemas.Tag])
+def get_tags(db: Session = Depends(get_db)):
+    tags = db.query(models.Tag).all()
+    return tags
+
+@router.get("/{tag_id}", response_model=schemas.Tag)
+def get_tag(tag_id: int, db: Session = Depends(get_db)):
+    tag = db.query(models.Tag).filter(models.Tag.id == tag_id).first()
+    if not tag:
+        raise HTTPException(status_code=404, detail="Tag not found")
+    return tag
+
+@router.post("/", response_model=schemas.Tag)
+def create_tag(tag: schemas.TagCreate, db: Session = Depends(get_db)):
+    new_tag = models.Tag(name=tag.name)
+    db.add(new_tag)
+    db.commit()
+    db.refresh(new_tag)
+    return new_tag
+
+@router.put("/{tag_id}", response_model=schemas.Tag)
+def update_tag(tag_id: int, tag: schemas.TagUpdate, db: Session = Depends(get_db)):
+    db_tag = db.query(models.Tag).filter(models.Tag.id == tag_id).first()
+    if not db_tag:
+        raise HTTPException(status_code=404, detail="Tag not found")
+
+    update_data = tag.dict(exclude_unset=True)
+    for key, value in update_data.items():
+        setattr(db_tag, key, value)
+
+    db.commit()
+    db.refresh(db_tag)
+    return db_tag
+
+@router.delete("/{tag_id}", status_code=204)
+def delete_tag(tag_id: int, db: Session = Depends(get_db)):
+    tag = db.query(models.Tag).filter(models.Tag.id == tag_id).first()
+    if not tag:
+        raise HTTPException(status_code=404, detail="Tag not found")
+
+    db.delete(tag)
+    db.commit()
+    return None
+
+This code defines a set of CRUD (Create, Read, Update, Delete) endpoints for managing tags in the `blog_app_svkgt` FastAPI application. Here's a breakdown of the endpoints:
+
+
+The code uses SQLAlchemy models and Pydantic schemas (not shown in the provided code) to interact with the database and validate the request data, respectively. The `get_db` dependency is used to obtain a database session for each request.

app/api/v1/routes/user.py

@@ -0,0 +1,60 @@
+from typing import List
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from app.db import get_db
+from app.models import User
+from app.schemas import UserCreate, UserRead, UserUpdate
+
+router = APIRouter()
+
+@router.post("/users", response_model=UserRead)
+def create_user(user: UserCreate, db: Session = Depends(get_db)):
+    db_user = User(**user.dict())
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    return db_user
+
+@router.get("/users", response_model=List[UserRead])
+def read_users(db: Session = Depends(get_db)):
+    users = db.query(User).all()
+    return users
+
+@router.get("/users/{user_id}", response_model=UserRead)
+def read_user(user_id: int, db: Session = Depends(get_db)):
+    db_user = db.query(User).get(user_id)
+    if not db_user:
+        raise HTTPException(status_code=404, detail="User not found")
+    return db_user
+
+@router.put("/users/{user_id}", response_model=UserRead)
+def update_user(user_id: int, user: UserUpdate, db: Session = Depends(get_db)):
+    db_user = db.query(User).get(user_id)
+    if not db_user:
+        raise HTTPException(status_code=404, detail="User not found")
+    update_data = user.dict(exclude_unset=True)
+    for key, value in update_data.items():
+        setattr(db_user, key, value)
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    return db_user
+
+@router.delete("/users/{user_id}")
+def delete_user(user_id: int, db: Session = Depends(get_db)):
+    db_user = db.query(User).get(user_id)
+    if not db_user:
+        raise HTTPException(status_code=404, detail="User not found")
+    db.delete(db_user)
+    db.commit()
+    return {"message": "User deleted successfully"}
+
+This code defines a `router` object using `APIRouter` from FastAPI. It contains the following endpoints:
+
+
+
+
+
+
+Note that this code assumes the existence of the following components:

app/api/v1/schemas/comments.py

@@ -0,0 +1,38 @@
+Here's the `comments.py` file with Pydantic schemas for comments, following the FastAPI project structure with SQLite and SQLAlchemy:
+
+
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel
+
+from app.db.models import Comment
+
+class CommentBase(BaseModel):
+    body: str
+
+class CommentCreate(CommentBase):
+    post_id: int
+
+class CommentUpdate(CommentBase):
+    pass
+
+class CommentInDBBase(CommentBase):
+    id: int
+    post_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        orm_mode = True
+
+class Comment(CommentInDBBase):
+    pass
+
+class CommentInDB(CommentInDBBase):
+    pass
+
+Here's a breakdown of the file:
+
+2. `CommentBase` is a Pydantic model representing the base fields of a comment (body).
+5. `CommentInDBBase` inherits from `CommentBase` and includes additional fields (`id`, `post_id`, `created_at`, and `updated_at`) that are typically stored in the database. The `orm_mode` config is set to `True` to allow reading data from an ORM model.

app/api/v1/schemas/posts.py

@@ -0,0 +1,39 @@
+Here's the `posts.py` file with Pydantic schemas for posts, located in the `app/api/v1/schemas/` directory:
+
+from typing import Optional
+from pydantic import BaseModel
+from datetime import datetime
+
+class PostBase(BaseModel):
+    title: str
+    content: str
+
+class PostCreate(PostBase):
+    pass
+
+class PostUpdate(PostBase):
+    pass
+
+class PostInDBBase(PostBase):
+    id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        orm_mode = True
+
+class Post(PostInDBBase):
+    pass
+
+class PostList(BaseModel):
+    __root__: list[Post]
+
+Explanation:
+
+1. We import the necessary modules: `typing` for type annotations, `pydantic` for defining data models, and `datetime` for working with date and time objects.
+
+2. `PostBase` is a Pydantic model that defines the base fields for a post: `title` and `content`.
+
+
+
+5. `PostInDBBase` inherits from `PostBase` and adds additional fields: `id`, `created_at`, and `updated_at`. The `orm_mode` config is set to `True` to allow Pydantic to read data from SQLAlchemy models.

app/api/v1/schemas/tags.py

@@ -0,0 +1,34 @@
+Here's the `tags.py` file with Pydantic schemas for tags in the `app/api/v1/schemas/` directory:
+
+from typing import Optional
+from pydantic import BaseModel
+
+class TagBase(BaseModel):
+    name: str
+
+class TagCreate(TagBase):
+    pass
+
+class TagUpdate(TagBase):
+    name: Optional[str] = None
+
+class TagInDBBase(TagBase):
+    id: int
+    name: str
+
+    class Config:
+        orm_mode = True
+
+class Tag(TagInDBBase):
+    pass
+
+class TagInDB(TagInDBBase):
+    pass
+
+Explanation:
+
+
+
+
+
+5. `TagInDBBase` inherits from `TagBase` and adds an `id` field as a required integer. It also sets the `orm_mode` configuration to `True`, which allows Pydantic to handle data from an ORM (SQLAlchemy).

app/api/v1/schemas/user.py

@@ -0,0 +1,35 @@
+Here's the `user.py` file with Pydantic schemas for the `User` model, which you can place in the `app/api/v1/schemas/` directory:
+
+from typing import Optional
+from pydantic import BaseModel, EmailStr
+
+class UserBase(BaseModel):
+    email: Optional[EmailStr] = None
+    is_active: Optional[bool] = True
+    is_superuser: bool = False
+    full_name: Optional[str] = None
+
+class UserCreate(UserBase):
+    email: EmailStr
+    password: str
+
+class UserUpdate(UserBase):
+    password: Optional[str] = None
+
+class UserInDBBase(UserBase):
+    id: Optional[int] = None
+
+    class Config:
+        orm_mode = True
+
+class User(UserInDBBase):
+    pass
+
+class UserInUpdate(UserUpdate):
+    pass
+
+This file defines several Pydantic models for the `User` model:
+
+
+
+Note: This code assumes that you have the `pydantic` library installed and that your project follows the recommended structure for FastAPI applications using SQLAlchemy and SQLite.

main.py

@@ -1,7 +1,10 @@
 from fastapi import FastAPI
-
+from app.api.db.database import engine, Base
-app = FastAPI(title="Generated Backend")
+from app.api.v1.routes import router
-
+from app.api.core.middleware.activity_tracker import ActivityTrackerMiddleware
-@app.get("/")
+app = FastAPI()
-def read_root():
+app.add_middleware(ActivityTrackerMiddleware)
-    return {"message": "Welcome to the generated backend"}
+app.include_router(router, prefix='/v1')
+@app.on_event('startup')
+def startup():
+    Base.metadata.create_all(bind=engine)

requirements.txt

@@ -1,4 +1 @@
-fastapi
+Here's the `requirements.txt` file for the 'blog_app' FastAPI backend:
-uvicorn
-sqlalchemy
-pydantic