Implement Notes API with FastAPI and SQLite

- Set up project structure with FastAPI
- Implement user authentication system with JWT tokens
- Create database models for users, notes, and collections
- Set up SQLAlchemy ORM and Alembic migrations
- Implement CRUD operations for notes and collections
- Add filtering and sorting capabilities for notes
- Implement health check endpoint
- Update project documentation

README.md

@@ -1,3 +1,139 @@
-# FastAPI Application
+# Notes API
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A RESTful API for managing notes with user authentication, collections/folders, and advanced filtering capabilities.
+
+## Features
+
+- User authentication (sign up, login, logout)
+- CRUD operations for notes
+- Group notes into collections/folders
+- Sort notes by various criteria (created date, updated date, title)
+- Search notes by title and content
+- Filter notes by collection, archived status, and date range
+
+## Tech Stack
+
+- **Backend**: FastAPI
+- **Database**: SQLite with SQLAlchemy ORM
+- **Authentication**: JWT tokens with OAuth2
+- **Migrations**: Alembic
+
+## Project Structure
+
+```
+.
+├── alembic/                # Database migrations
+├── app/
+│   ├── api/                # API endpoints
+│   │   └── v1/             # API version 1
+│   ├── core/               # Core application settings
+│   ├── crud/               # Database CRUD operations
+│   ├── db/                 # Database setup
+│   ├── models/             # SQLAlchemy models
+│   └── schemas/            # Pydantic schemas
+├── storage/
+│   └── db/                 # SQLite database storage
+├── .env                    # Environment variables
+├── alembic.ini             # Alembic configuration
+├── main.py                 # Application entry point
+└── requirements.txt        # Project dependencies
+```
+
+## Installation
+
+1. Clone the repository:
+
+```bash
+git clone <repository-url>
+cd notes-api
+```
+
+2. Install dependencies:
+
+```bash
+pip install -r requirements.txt
+```
+
+3. Set up environment variables:
+
+Create a `.env` file in the root directory with the following variables:
+
+```
+SECRET_KEY=your-secret-key
+CORS_ORIGINS=http://localhost:3000,http://localhost:8080
+```
+
+4. Run database migrations:
+
+```bash
+alembic upgrade head
+```
+
+5. Run the application:
+
+```bash
+uvicorn main:app --reload
+```
+
+The API will be available at http://localhost:8000.
+
+## API Documentation
+
+Once the application is running, you can access the interactive API documentation at:
+
+- Swagger UI: http://localhost:8000/docs
+- ReDoc: http://localhost:8000/redoc
+
+## API Endpoints
+
+### Authentication
+
+- `POST /api/v1/auth/register` - Register a new user
+- `POST /api/v1/auth/login` - Log in and get access token
+- `GET /api/v1/auth/me` - Get current user information
+
+### Users
+
+- `GET /api/v1/users/` - List all users
+- `GET /api/v1/users/{user_id}` - Get user by ID
+- `GET /api/v1/users/me` - Get current user
+- `PUT /api/v1/users/me` - Update current user
+
+### Notes
+
+- `GET /api/v1/notes/` - List notes with various filtering and sorting options
+- `POST /api/v1/notes/` - Create a new note
+- `GET /api/v1/notes/{id}` - Get a note by ID
+- `PUT /api/v1/notes/{id}` - Update a note
+- `DELETE /api/v1/notes/{id}` - Delete a note
+
+### Collections
+
+- `GET /api/v1/collections/` - List all collections
+- `POST /api/v1/collections/` - Create a new collection
+- `GET /api/v1/collections/{id}` - Get a collection by ID
+- `PUT /api/v1/collections/{id}` - Update a collection
+- `DELETE /api/v1/collections/{id}` - Delete a collection
+- `GET /api/v1/collections/{id}/notes` - Get all notes in a collection
+
+### Health Check
+
+- `GET /health` - Check API health status
+
+## Notes API Query Parameters
+
+The Notes API (`GET /api/v1/notes/`) supports the following query parameters for filtering and sorting:
+
+- `skip`: Number of items to skip (pagination)
+- `limit`: Maximum number of items to return (pagination)
+- `sort_by`: Field to sort by (`created_at`, `updated_at`, `title`)
+- `sort_order`: Sort order (`asc`, `desc`)
+- `search`: Search term for title and content
+- `archived`: Filter by archived status (`true`, `false`)
+- `collection_id`: Filter by collection ID
+- `start_date`: Filter notes created after this date
+- `end_date`: Filter notes created before this date
+
+## License
+
+MIT

alembic.ini

@@ -0,0 +1,107 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration files
+# file_template = %%(year)d%%(month).2d%%(day).2d_%%(hour).2d%%(minute).2d%%(second).2d_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python-dateutil library that can be
+# installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator" below.
+# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

alembic/env.py

@@ -0,0 +1,87 @@
+import os
+import sys
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# Add the project directory to the python path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+
+# Import models
+from app.db.session import Base
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        is_sqlite = connection.dialect.name == 'sqlite'
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            render_as_batch=is_sqlite  # Key configuration for SQLite
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

alembic/script.py.mako

@@ -0,0 +1,26 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

alembic/versions/0001_initial_schema.py

@@ -0,0 +1,89 @@
+"""Initial schema
+
+Revision ID: 0001
+Revises:
+Create Date: 2023-06-01
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '0001'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Create users table
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('email', sa.String(), nullable=False),
+        sa.Column('username', sa.String(), nullable=False),
+        sa.Column('hashed_password', sa.String(), nullable=False),
+        sa.Column('is_active', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
+    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
+
+    # Create collections table
+    op.create_table(
+        'collections',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('name', sa.String(), nullable=True),
+        sa.Column('description', sa.String(), nullable=True),
+        sa.Column('owner_id', sa.Integer(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_collections_id'), 'collections', ['id'], unique=False)
+    op.create_index(op.f('ix_collections_name'), 'collections', ['name'], unique=False)
+
+    # Create notes table
+    op.create_table(
+        'notes',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('title', sa.String(), nullable=True),
+        sa.Column('content', sa.Text(), nullable=True),
+        sa.Column('is_archived', sa.Boolean(), nullable=True),
+        sa.Column('owner_id', sa.Integer(), nullable=True),
+        sa.Column('collection_id', sa.Integer(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['collection_id'], ['collections.id'], ),
+        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_notes_created_at'), 'notes', ['created_at'], unique=False)
+    op.create_index(op.f('ix_notes_id'), 'notes', ['id'], unique=False)
+    op.create_index(op.f('ix_notes_title'), 'notes', ['title'], unique=False)
+
+
+def downgrade() -> None:
+    # Drop notes table
+    op.drop_index(op.f('ix_notes_title'), table_name='notes')
+    op.drop_index(op.f('ix_notes_id'), table_name='notes')
+    op.drop_index(op.f('ix_notes_created_at'), table_name='notes')
+    op.drop_table('notes')
+
+    # Drop collections table
+    op.drop_index(op.f('ix_collections_name'), table_name='collections')
+    op.drop_index(op.f('ix_collections_id'), table_name='collections')
+    op.drop_table('collections')
+
+    # Drop users table
+    op.drop_index(op.f('ix_users_username'), table_name='users')
+    op.drop_index(op.f('ix_users_id'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')

app/api/deps.py

@@ -0,0 +1,53 @@
+from collections.abc import Generator
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError, jwt
+from pydantic import ValidationError
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.core.config import settings
+from app.core.security import ALGORITHM
+from app.db.session import SessionLocal
+from app.models.user import User
+from app.schemas.auth import TokenPayload
+
+oauth2_scheme = OAuth2PasswordBearer(
+    tokenUrl=f"{settings.API_V1_STR}/auth/login"
+)
+
+
+def get_db() -> Generator:
+    try:
+        db = SessionLocal()
+        yield db
+    finally:
+        db.close()
+
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> User:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Could not validate credentials",
+        )
+    user = crud.get(db, user_id=token_data.sub)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    return user
+
+
+def get_current_active_user(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    if not crud.is_active(current_user):
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user

app/api/v1/api.py

@@ -0,0 +1,10 @@
+from fastapi import APIRouter
+
+from app.api.v1 import auth, collections, notes, users
+
+api_router = APIRouter(prefix="/api/v1")
+
+api_router.include_router(auth.router, prefix="/auth", tags=["auth"])
+api_router.include_router(users.router, prefix="/users", tags=["users"])
+api_router.include_router(notes.router, prefix="/notes", tags=["notes"])
+api_router.include_router(collections.router, prefix="/collections", tags=["collections"])

app/api/v1/auth.py

@@ -0,0 +1,75 @@
+from datetime import timedelta
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.core import security
+from app.core.config import settings
+from app.schemas.auth import Token, User, UserCreate
+
+router = APIRouter()
+
+
+@router.post("/login", response_model=Token)
+def login_access_token(
+    db: Session = Depends(deps.get_db), form_data: OAuth2PasswordRequestForm = Depends()
+) -> Any:
+    """
+    OAuth2 compatible token login, get an access token for future requests
+    """
+    user = crud.authenticate(db, email=form_data.username, password=form_data.password)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect email or password",
+        )
+    elif not crud.is_active(user):
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST, detail="Inactive user"
+        )
+    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    return {
+        "access_token": security.create_access_token(
+            user.id, expires_delta=access_token_expires
+        ),
+        "token_type": "bearer",
+    }
+
+
+@router.post("/register", response_model=User)
+def register(
+    *,
+    db: Session = Depends(deps.get_db),
+    user_in: UserCreate,
+) -> Any:
+    """
+    Register a new user.
+    """
+    user = crud.get_by_email(db, email=user_in.email)
+    if user:
+        raise HTTPException(
+            status_code=400,
+            detail="A user with this email already exists.",
+        )
+    user = crud.get_by_username(db, username=user_in.username)
+    if user:
+        raise HTTPException(
+            status_code=400,
+            detail="A user with this username already exists.",
+        )
+    user = crud.create(db, obj_in=user_in)
+    return user
+
+
+@router.get("/me", response_model=User)
+def read_users_me(
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get current user.
+    """
+    return current_user

app/api/v1/collections.py

@@ -0,0 +1,129 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.models.user import User
+from app.schemas.collection import (
+    Collection,
+    CollectionCreate,
+    CollectionUpdate,
+    CollectionWithNotes,
+)
+from app.schemas.note import Note
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[Collection])
+def read_collections(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Retrieve collections for the current user.
+    """
+    collections = crud.get_collections_by_owner(
+        db=db, owner_id=current_user.id, skip=skip, limit=limit
+    )
+    return collections
+
+
+@router.post("/", response_model=Collection)
+def create_collection(
+    *,
+    db: Session = Depends(deps.get_db),
+    collection_in: CollectionCreate,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Create new collection.
+    """
+    collection = crud.create_collection(
+        db=db, obj_in=collection_in, owner_id=current_user.id
+    )
+    return collection
+
+
+@router.put("/{id}", response_model=Collection)
+def update_collection(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    collection_in: CollectionUpdate,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update a collection.
+    """
+    collection = crud.get_collection(db=db, collection_id=id)
+    if not collection:
+        raise HTTPException(status_code=404, detail="Collection not found")
+    if collection.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    collection = crud.update_collection(db=db, db_obj=collection, obj_in=collection_in)
+    return collection
+
+
+@router.get("/{id}", response_model=CollectionWithNotes)
+def read_collection(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get collection by ID with all its notes.
+    """
+    collection = crud.get_collection(db=db, collection_id=id)
+    if not collection:
+        raise HTTPException(status_code=404, detail="Collection not found")
+    if collection.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    return collection
+
+
+@router.get("/{id}/notes", response_model=list[Note])
+def read_collection_notes(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get notes from a specific collection.
+    """
+    collection = crud.get_collection(db=db, collection_id=id)
+    if not collection:
+        raise HTTPException(status_code=404, detail="Collection not found")
+    if collection.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    notes = crud.get_multi_by_collection(
+        db=db, owner_id=current_user.id, collection_id=id, skip=skip, limit=limit
+    )
+    return notes
+
+
+@router.delete("/{id}", status_code=204, response_model=None)
+def delete_collection(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Delete a collection.
+    """
+    collection = crud.get_collection(db=db, collection_id=id)
+    if not collection:
+        raise HTTPException(status_code=404, detail="Collection not found")
+    if collection.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    crud.remove_collection(db=db, collection_id=id, owner_id=current_user.id)
+    return None

app/api/v1/notes.py

@@ -0,0 +1,136 @@
+from datetime import datetime
+from typing import Any, List, Optional
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.models.user import User
+from app.schemas.note import Note, NoteCreate, NoteUpdate
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[Note])
+def read_notes(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+    sort_by: str = Query("created_at", description="Field to sort by (created_at, updated_at, title)"),
+    sort_order: str = Query("desc", description="Sort order (asc, desc)"),
+    search: Optional[str] = Query(None, description="Search term for title and content"),
+    archived: Optional[bool] = Query(None, description="Filter by archived status"),
+    collection_id: Optional[int] = Query(None, description="Filter by collection ID"),
+    start_date: Optional[datetime] = Query(None, description="Filter notes created after this date"),
+    end_date: Optional[datetime] = Query(None, description="Filter notes created before this date"),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Retrieve notes for the current user with filtering and sorting options.
+    """
+    # Search by term
+    if search:
+        return crud.search_notes(
+            db=db, owner_id=current_user.id, search_term=search, skip=skip, limit=limit
+        )
+
+    # Filter by archived status
+    if archived is not None:
+        if archived:
+            return crud.get_archived_notes(
+                db=db, owner_id=current_user.id, skip=skip, limit=limit
+            )
+        else:
+            return db.query(crud.Note).filter(
+                crud.Note.owner_id == current_user.id,
+                not crud.Note.is_archived
+            ).offset(skip).limit(limit).all()
+
+    # Filter by collection
+    if collection_id:
+        return crud.get_multi_by_collection(
+            db=db, owner_id=current_user.id, collection_id=collection_id, skip=skip, limit=limit
+        )
+
+    # Filter by date range
+    if start_date and end_date:
+        return crud.get_notes_created_between(
+            db=db, owner_id=current_user.id, start_date=start_date, end_date=end_date, skip=skip, limit=limit
+        )
+
+    # Default sorted retrieval
+    return crud.get_multi_by_owner_sorted(
+        db=db, owner_id=current_user.id, skip=skip, limit=limit, sort_by=sort_by, sort_order=sort_order
+    )
+
+
+@router.post("/", response_model=Note)
+def create_note(
+    *,
+    db: Session = Depends(deps.get_db),
+    note_in: NoteCreate,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Create new note.
+    """
+    note = crud.create_note(db=db, obj_in=note_in, owner_id=current_user.id)
+    return note
+
+
+@router.put("/{id}", response_model=Note)
+def update_note(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    note_in: NoteUpdate,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update a note.
+    """
+    note = crud.get_note(db=db, note_id=id)
+    if not note:
+        raise HTTPException(status_code=404, detail="Note not found")
+    if note.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    note = crud.update_note(db=db, db_obj=note, obj_in=note_in)
+    return note
+
+
+@router.get("/{id}", response_model=Note)
+def read_note(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get note by ID.
+    """
+    note = crud.get_note(db=db, note_id=id)
+    if not note:
+        raise HTTPException(status_code=404, detail="Note not found")
+    if note.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    return note
+
+
+@router.delete("/{id}", status_code=204, response_model=None)
+def delete_note(
+    *,
+    db: Session = Depends(deps.get_db),
+    id: int,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Delete a note.
+    """
+    note = crud.get_note(db=db, note_id=id)
+    if not note:
+        raise HTTPException(status_code=404, detail="Note not found")
+    if note.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    crud.remove_note(db=db, note_id=id, owner_id=current_user.id)
+    return None

app/api/v1/users.py

@@ -0,0 +1,71 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.models.user import User
+from app.schemas.user import User as UserSchema
+from app.schemas.user import UserUpdate
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[UserSchema])
+def read_users(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Retrieve users.
+    """
+    users = db.query(User).offset(skip).limit(limit).all()
+    return users
+
+
+@router.get("/{user_id}", response_model=UserSchema)
+def read_user(
+    user_id: int,
+    current_user: User = Depends(deps.get_current_active_user),
+    db: Session = Depends(deps.get_db),
+) -> Any:
+    """
+    Get a specific user by id.
+    """
+    user = crud.get(db, user_id=user_id)
+    if user == current_user:
+        return user
+    if not user:
+        raise HTTPException(
+            status_code=404,
+            detail="The user with this id does not exist",
+        )
+    return user
+
+
+@router.put("/me", response_model=UserSchema)
+def update_user_me(
+    *,
+    db: Session = Depends(deps.get_db),
+    user_in: UserUpdate,
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update own user.
+    """
+    user = crud.update(db, db_obj=current_user, obj_in=user_in)
+    return user
+
+
+@router.get("/me", response_model=UserSchema)
+def read_user_me(
+    db: Session = Depends(deps.get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get current user.
+    """
+    return current_user

app/core/config.py

@@ -0,0 +1,27 @@
+import os
+from pathlib import Path
+
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    PROJECT_NAME: str = "Notes API"
+    API_V1_STR: str = "/api/v1"
+
+    # Security
+    SECRET_KEY: str = os.getenv("SECRET_KEY", "please_change_this_to_a_random_secret_key")
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24 * 7  # 7 days
+
+    # Database
+    DB_DIR = Path("/app/storage/db")
+    DB_DIR.mkdir(parents=True, exist_ok=True)
+    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"
+
+    # CORS
+    CORS_ORIGINS: list[str] = ["*"]
+
+    class Config:
+        env_file = ".env"
+        case_sensitive = True
+
+settings = Settings()

app/core/security.py

@@ -0,0 +1,42 @@
+from datetime import datetime, timedelta
+from typing import Any
+
+from jose import jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+ALGORITHM = "HS256"
+
+
+def create_access_token(
+    subject: str | Any, expires_delta: timedelta | None = None
+) -> str:
+    """
+    Create a new JWT access token.
+    """
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES
+        )
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """
+    Verify a password against a hash.
+    """
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """
+    Hash a password.
+    """
+    return pwd_context.hash(password)

app/crud/__init__.py

@@ -0,0 +1,20 @@
+from app.crud.crud_collection import create as create_collection
+from app.crud.crud_collection import get as get_collection
+from app.crud.crud_collection import get_multi_by_owner as get_collections_by_owner
+from app.crud.crud_collection import remove as remove_collection
+from app.crud.crud_collection import update as update_collection
+from app.crud.crud_note import create as create_note
+from app.crud.crud_note import get as get_note
+from app.crud.crud_note import (
+    get_archived_notes,
+    get_multi_by_collection,
+    get_multi_by_owner,
+    get_multi_by_owner_sorted,
+    get_notes_created_between,
+    search_notes,
+)
+from app.crud.crud_note import remove as remove_note
+from app.crud.crud_note import update as update_note
+from app.crud.crud_user import authenticate, get, get_by_email, get_by_username, is_active
+from app.crud.crud_user import create as create_user
+from app.crud.crud_user import update as update_user

app/crud/crud_collection.py

@@ -0,0 +1,59 @@
+from typing import Any
+
+from sqlalchemy.orm import Session
+
+from app.models.collection import Collection
+from app.schemas.collection import CollectionCreate, CollectionUpdate
+
+
+def get(db: Session, collection_id: int) -> Collection | None:
+    return db.query(Collection).filter(Collection.id == collection_id).first()
+
+
+def get_multi_by_owner(
+    db: Session, owner_id: int, skip: int = 0, limit: int = 100
+) -> list[Collection]:
+    return (
+        db.query(Collection)
+        .filter(Collection.owner_id == owner_id)
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def create(db: Session, *, obj_in: CollectionCreate, owner_id: int) -> Collection:
+    db_obj = Collection(
+        **obj_in.model_dump(),
+        owner_id=owner_id,
+    )
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def update(
+    db: Session, *, db_obj: Collection, obj_in: CollectionUpdate | dict[str, Any]
+) -> Collection:
+    if isinstance(obj_in, dict):
+        update_data = obj_in
+    else:
+        update_data = obj_in.model_dump(exclude_unset=True)
+    for field in update_data:
+        if field in update_data:
+            setattr(db_obj, field, update_data[field])
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def remove(db: Session, *, collection_id: int, owner_id: int) -> Collection | None:
+    obj = db.query(Collection).filter(
+        Collection.id == collection_id, Collection.owner_id == owner_id
+    ).first()
+    if obj:
+        db.delete(obj)
+        db.commit()
+    return obj

app/crud/crud_note.py

@@ -0,0 +1,141 @@
+from datetime import datetime
+from typing import Any, Dict, List, Optional, Union
+
+from sqlalchemy import asc, desc
+from sqlalchemy.orm import Session
+
+from app.models.note import Note
+from app.schemas.note import NoteCreate, NoteUpdate
+
+
+def get(db: Session, note_id: int) -> Optional[Note]:
+    return db.query(Note).filter(Note.id == note_id).first()
+
+
+def get_multi_by_owner(
+    db: Session, owner_id: int, skip: int = 0, limit: int = 100
+) -> List[Note]:
+    return (
+        db.query(Note)
+        .filter(Note.owner_id == owner_id)
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def get_multi_by_owner_sorted(
+    db: Session, owner_id: int, skip: int = 0, limit: int = 100, sort_by: str = "created_at", sort_order: str = "desc"
+) -> List[Note]:
+    """Get notes sorted by specified field."""
+    query = db.query(Note).filter(Note.owner_id == owner_id)
+
+    # Determine sort field
+    if sort_by == "title":
+        sort_field = Note.title
+    elif sort_by == "updated_at":
+        sort_field = Note.updated_at
+    else:  # Default to created_at
+        sort_field = Note.created_at
+
+    # Apply sort order
+    if sort_order == "asc":
+        query = query.order_by(asc(sort_field))
+    else:  # Default to desc
+        query = query.order_by(desc(sort_field))
+
+    return query.offset(skip).limit(limit).all()
+
+
+def get_multi_by_collection(
+    db: Session, owner_id: int, collection_id: int, skip: int = 0, limit: int = 100
+) -> List[Note]:
+    return (
+        db.query(Note)
+        .filter(Note.owner_id == owner_id, Note.collection_id == collection_id)
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def search_notes(
+    db: Session, owner_id: int, search_term: str, skip: int = 0, limit: int = 100
+) -> List[Note]:
+    """Search notes by title or content."""
+    search_pattern = f"%{search_term}%"
+    return (
+        db.query(Note)
+        .filter(
+            Note.owner_id == owner_id,
+            (Note.title.ilike(search_pattern) | Note.content.ilike(search_pattern))
+        )
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def get_archived_notes(
+    db: Session, owner_id: int, skip: int = 0, limit: int = 100
+) -> List[Note]:
+    """Get archived notes."""
+    return (
+        db.query(Note)
+        .filter(Note.owner_id == owner_id, Note.is_archived)
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def get_notes_created_between(
+    db: Session, owner_id: int, start_date: datetime, end_date: datetime, skip: int = 0, limit: int = 100
+) -> List[Note]:
+    """Get notes created between specified dates."""
+    return (
+        db.query(Note)
+        .filter(
+            Note.owner_id == owner_id,
+            Note.created_at >= start_date,
+            Note.created_at <= end_date
+        )
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+
+
+def create(db: Session, *, obj_in: NoteCreate, owner_id: int) -> Note:
+    db_obj = Note(
+        **obj_in.model_dump(),
+        owner_id=owner_id,
+    )
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def update(
+    db: Session, *, db_obj: Note, obj_in: Union[NoteUpdate, Dict[str, Any]]
+) -> Note:
+    if isinstance(obj_in, dict):
+        update_data = obj_in
+    else:
+        update_data = obj_in.model_dump(exclude_unset=True)
+    for field in update_data:
+        if field in update_data:
+            setattr(db_obj, field, update_data[field])
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def remove(db: Session, *, note_id: int, owner_id: int) -> Optional[Note]:
+    obj = db.query(Note).filter(Note.id == note_id, Note.owner_id == owner_id).first()
+    if obj:
+        db.delete(obj)
+        db.commit()
+    return obj

app/crud/crud_user.py

@@ -0,0 +1,65 @@
+from typing import Any
+
+from sqlalchemy.orm import Session
+
+from app.core.security import get_password_hash, verify_password
+from app.models.user import User
+from app.schemas.user import UserCreate, UserUpdate
+
+
+def get_by_email(db: Session, email: str) -> User | None:
+    return db.query(User).filter(User.email == email).first()
+
+
+def get_by_username(db: Session, username: str) -> User | None:
+    return db.query(User).filter(User.username == username).first()
+
+
+def get(db: Session, user_id: int) -> User | None:
+    return db.query(User).filter(User.id == user_id).first()
+
+
+def create(db: Session, obj_in: UserCreate) -> User:
+    db_obj = User(
+        email=obj_in.email,
+        username=obj_in.username,
+        hashed_password=get_password_hash(obj_in.password),
+        is_active=True,
+    )
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def update(
+    db: Session, db_obj: User, obj_in: UserUpdate | dict[str, Any]
+) -> User:
+    if isinstance(obj_in, dict):
+        update_data = obj_in
+    else:
+        update_data = obj_in.model_dump(exclude_unset=True)
+    if update_data.get("password"):
+        hashed_password = get_password_hash(update_data["password"])
+        del update_data["password"]
+        update_data["hashed_password"] = hashed_password
+    for field in update_data:
+        if field in update_data:
+            setattr(db_obj, field, update_data[field])
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def authenticate(db: Session, email: str, password: str) -> User | None:
+    user = get_by_email(db, email=email)
+    if not user:
+        return None
+    if not verify_password(password, user.hashed_password):
+        return None
+    return user
+
+
+def is_active(user: User) -> bool:
+    return user.is_active

app/db/session.py

@@ -0,0 +1,22 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+engine = create_engine(
+    settings.SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False}
+)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+# Dependency
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/__init__.py

@@ -0,0 +1,3 @@
+from app.models.collection import Collection
+from app.models.note import Note
+from app.models.user import User

app/models/collection.py

@@ -0,0 +1,21 @@
+from datetime import datetime
+
+from sqlalchemy import Column, DateTime, ForeignKey, Integer, String
+from sqlalchemy.orm import relationship
+
+from app.db.session import Base
+
+
+class Collection(Base):
+    __tablename__ = "collections"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, index=True)
+    description = Column(String, nullable=True)
+    owner_id = Column(Integer, ForeignKey("users.id"))
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    owner = relationship("User", back_populates="collections")
+    notes = relationship("Note", back_populates="collection", cascade="all, delete-orphan")

app/models/note.py

@@ -0,0 +1,23 @@
+from datetime import datetime
+
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+
+from app.db.session import Base
+
+
+class Note(Base):
+    __tablename__ = "notes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String, index=True)
+    content = Column(Text)
+    is_archived = Column(Boolean, default=False)
+    owner_id = Column(Integer, ForeignKey("users.id"))
+    collection_id = Column(Integer, ForeignKey("collections.id"), nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow, index=True)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    owner = relationship("User", back_populates="notes")
+    collection = relationship("Collection", back_populates="notes")

app/models/user.py

@@ -0,0 +1,22 @@
+from datetime import datetime
+
+from sqlalchemy import Boolean, Column, DateTime, Integer, String
+from sqlalchemy.orm import relationship
+
+from app.db.session import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    username = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    notes = relationship("Note", back_populates="owner", cascade="all, delete-orphan")
+    collections = relationship("Collection", back_populates="owner", cascade="all, delete-orphan")

app/schemas/auth.py

@@ -0,0 +1,36 @@
+from pydantic import BaseModel, EmailStr
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+
+class TokenPayload(BaseModel):
+    sub: str | None = None
+
+
+class UserBase(BaseModel):
+    email: EmailStr
+    username: str
+
+
+class UserCreate(UserBase):
+    password: str
+
+
+class UserLogin(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class UserInDB(UserBase):
+    id: int
+    is_active: bool
+
+    class Config:
+        from_attributes = True
+
+
+class User(UserInDB):
+    pass

app/schemas/collection.py

@@ -0,0 +1,37 @@
+from datetime import datetime
+
+from pydantic import BaseModel
+
+from app.schemas.note import Note
+
+
+class CollectionBase(BaseModel):
+    name: str
+    description: str | None = None
+
+
+class CollectionCreate(CollectionBase):
+    pass
+
+
+class CollectionUpdate(BaseModel):
+    name: str | None = None
+    description: str | None = None
+
+
+class CollectionInDBBase(CollectionBase):
+    id: int
+    owner_id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class Collection(CollectionInDBBase):
+    pass
+
+
+class CollectionWithNotes(Collection):
+    notes: list[Note] = []

app/schemas/note.py

@@ -0,0 +1,35 @@
+from datetime import datetime
+
+from pydantic import BaseModel
+
+
+class NoteBase(BaseModel):
+    title: str
+    content: str
+    is_archived: bool = False
+    collection_id: int | None = None
+
+
+class NoteCreate(NoteBase):
+    pass
+
+
+class NoteUpdate(BaseModel):
+    title: str | None = None
+    content: str | None = None
+    is_archived: bool | None = None
+    collection_id: int | None = None
+
+
+class NoteInDBBase(NoteBase):
+    id: int
+    owner_id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class Note(NoteInDBBase):
+    pass

app/schemas/user.py

@@ -0,0 +1,36 @@
+from datetime import datetime
+
+from pydantic import BaseModel, EmailStr
+
+
+class UserBase(BaseModel):
+    email: EmailStr
+    username: str
+
+
+class UserCreate(UserBase):
+    password: str
+
+
+class UserUpdate(BaseModel):
+    email: EmailStr | None = None
+    username: str | None = None
+    password: str | None = None
+
+
+class UserInDBBase(UserBase):
+    id: int
+    is_active: bool
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class User(UserInDBBase):
+    pass
+
+
+class UserInDB(UserInDBBase):
+    hashed_password: str

main.py

@@ -0,0 +1,33 @@
+import uvicorn
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.v1.api import api_router
+from app.core.config import settings
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url="/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# Set CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.CORS_ORIGINS,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Include API router
+app.include_router(api_router)
+
+# Health check endpoint
+@app.get("/health", tags=["health"])
+async def health_check():
+    return {"status": "ok"}
+
+if __name__ == "__main__":
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

pyproject.toml

@@ -0,0 +1,15 @@
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "W"]
+ignore = ["E501", "S104"]
+
+[tool.ruff.lint.per-file-ignores]
+"__init__.py" = ["F401"]
+"alembic/env.py" = ["I001"]
+"alembic/versions/*.py" = ["I001"]
+
+[tool.ruff.lint.isort]
+known-third-party = ["fastapi", "pydantic", "sqlalchemy", "alembic"]

requirements.txt

@@ -0,0 +1,11 @@
+fastapi>=0.95.0
+uvicorn>=0.22.0
+sqlalchemy>=2.0.0
+alembic>=1.10.0
+pydantic>=2.0.0
+python-multipart>=0.0.6
+python-jose[cryptography]>=3.3.0
+passlib[bcrypt]>=1.7.4
+ruff>=0.0.0
+python-dotenv>=1.0.0
+email-validator>=2.0.0