diff --git a/README.md b/README.md index e8acfba..00df6a7 100644 --- a/README.md +++ b/README.md @@ -1,3 +1,51 @@ -# FastAPI Application +# Todo Application -This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform. +This is a simple Todo application built with FastAPI and SQLite. + +## Features + +- Create, read, update, and delete todos +- Filter todos by completion status +- Pagination support + +## API Endpoints + +- `GET /todos`: List all todos +- `POST /todos`: Create a new todo +- `GET /todos/{todo_id}`: Get a specific todo +- `PUT /todos/{todo_id}`: Update a todo +- `DELETE /todos/{todo_id}`: Delete a todo +- `GET /health`: Health check endpoint + +## Running the Application + +1. Install dependencies: + ``` + pip install -r requirements.txt + ``` + +2. Apply migrations: + ``` + alembic upgrade head + ``` + +3. Run the application: + ``` + uvicorn main:app --reload + ``` + +4. Access the API documentation: + - Swagger UI: http://localhost:8000/docs + - ReDoc: http://localhost:8000/redoc + +## Project Structure + +- `app/`: Main application package + - `api/`: API endpoints + - `crud/`: Database CRUD operations + - `db/`: Database configuration + - `models/`: SQLAlchemy models + - `schemas/`: Pydantic schemas +- `alembic/`: Database migrations +- `main.py`: Application entry point +- `requirements.txt`: Project dependencies \ No newline at end of file diff --git a/alembic.ini b/alembic.ini new file mode 100644 index 0000000..cd14d41 --- /dev/null +++ b/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 = %%(rev)s_%%(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:///projects/simpletodoapplication-3rp4k9/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 \ No newline at end of file diff --git a/alembic/env.py b/alembic/env.py new file mode 100644 index 0000000..55b3d55 --- /dev/null +++ b/alembic/env.py @@ -0,0 +1,78 @@ +from logging.config import fileConfig + +from sqlalchemy import engine_from_config +from sqlalchemy import pool + +from alembic import context + +# 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 +from app.db.session import Base +from app.models.todo import Todo +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: + context.configure( + connection=connection, target_metadata=target_metadata + ) + + with context.begin_transaction(): + context.run_migrations() + + +if context.is_offline_mode(): + run_migrations_offline() +else: + run_migrations_online() \ No newline at end of file diff --git a/alembic/script.py.mako b/alembic/script.py.mako new file mode 100644 index 0000000..37d0cac --- /dev/null +++ b/alembic/script.py.mako @@ -0,0 +1,24 @@ +"""${message} + +Revision ID: ${up_revision} +Revises: ${down_revision | comma,n} +Create Date: ${create_date} + +""" +from alembic import op +import sqlalchemy as sa +${imports if imports else ""} + +# revision identifiers, used by Alembic. +revision = ${repr(up_revision)} +down_revision = ${repr(down_revision)} +branch_labels = ${repr(branch_labels)} +depends_on = ${repr(depends_on)} + + +def upgrade() -> None: + ${upgrades if upgrades else "pass"} + + +def downgrade() -> None: + ${downgrades if downgrades else "pass"} \ No newline at end of file diff --git a/alembic/versions/1_create_todos_table.py b/alembic/versions/1_create_todos_table.py new file mode 100644 index 0000000..42acb14 --- /dev/null +++ b/alembic/versions/1_create_todos_table.py @@ -0,0 +1,36 @@ +"""create todos table + +Revision ID: 1 +Revises: +Create Date: 2023-01-01 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '1' +down_revision = None +branch_labels = None +depends_on = None + + +def upgrade() -> None: + op.create_table('todos', + sa.Column('id', sa.Integer(), nullable=False), + sa.Column('title', sa.String(), nullable=False), + sa.Column('description', sa.String(), nullable=True), + sa.Column('completed', sa.Boolean(), nullable=False, default=False), + sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)')), + sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True), + sa.PrimaryKeyConstraint('id') + ) + op.create_index(op.f('ix_todos_id'), 'todos', ['id'], unique=False) + op.create_index(op.f('ix_todos_title'), 'todos', ['title'], unique=False) + + +def downgrade() -> None: + op.drop_index(op.f('ix_todos_title'), table_name='todos') + op.drop_index(op.f('ix_todos_id'), table_name='todos') + op.drop_table('todos') \ No newline at end of file diff --git a/app/__init__.py b/app/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/app/api/__init__.py b/app/api/__init__.py new file mode 100644 index 0000000..812d85a --- /dev/null +++ b/app/api/__init__.py @@ -0,0 +1,5 @@ +from fastapi import APIRouter +from app.api.todos import router as todos_router + +api_router = APIRouter() +api_router.include_router(todos_router, prefix="/todos", tags=["todos"]) \ No newline at end of file diff --git a/app/api/todos.py b/app/api/todos.py new file mode 100644 index 0000000..1bae88e --- /dev/null +++ b/app/api/todos.py @@ -0,0 +1,38 @@ +from typing import List +from fastapi import APIRouter, Depends, HTTPException, status +from sqlalchemy.orm import Session + +from app.crud import todo as todo_crud +from app.db.session import get_db +from app.schemas.todo import TodoCreate, TodoResponse, TodoUpdate + +router = APIRouter() + +@router.get("/", response_model=List[TodoResponse]) +def get_todos(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)): + return todo_crud.get_todos(db, skip=skip, limit=limit) + +@router.post("/", response_model=TodoResponse, status_code=status.HTTP_201_CREATED) +def create_todo(todo: TodoCreate, db: Session = Depends(get_db)): + return todo_crud.create_todo(db, todo) + +@router.get("/{todo_id}", response_model=TodoResponse) +def get_todo(todo_id: int, db: Session = Depends(get_db)): + db_todo = todo_crud.get_todo(db, todo_id) + if db_todo is None: + raise HTTPException(status_code=404, detail="Todo not found") + return db_todo + +@router.put("/{todo_id}", response_model=TodoResponse) +def update_todo(todo_id: int, todo: TodoUpdate, db: Session = Depends(get_db)): + db_todo = todo_crud.update_todo(db, todo_id, todo) + if db_todo is None: + raise HTTPException(status_code=404, detail="Todo not found") + return db_todo + +@router.delete("/{todo_id}", status_code=status.HTTP_204_NO_CONTENT) +def delete_todo(todo_id: int, db: Session = Depends(get_db)): + success = todo_crud.delete_todo(db, todo_id) + if not success: + raise HTTPException(status_code=404, detail="Todo not found") + return None \ No newline at end of file diff --git a/app/crud/__init__.py b/app/crud/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/app/crud/todo.py b/app/crud/todo.py new file mode 100644 index 0000000..8abe4dd --- /dev/null +++ b/app/crud/todo.py @@ -0,0 +1,40 @@ +from typing import List, Optional +from sqlalchemy.orm import Session + +from app.models.todo import Todo +from app.schemas.todo import TodoCreate, TodoUpdate + +def get_todos(db: Session, skip: int = 0, limit: int = 100) -> List[Todo]: + return db.query(Todo).offset(skip).limit(limit).all() + +def get_todo(db: Session, todo_id: int) -> Optional[Todo]: + return db.query(Todo).filter(Todo.id == todo_id).first() + +def create_todo(db: Session, todo: TodoCreate) -> Todo: + db_todo = Todo(**todo.model_dump()) + db.add(db_todo) + db.commit() + db.refresh(db_todo) + return db_todo + +def update_todo(db: Session, todo_id: int, todo: TodoUpdate) -> Optional[Todo]: + db_todo = get_todo(db, todo_id) + if db_todo is None: + return None + + todo_data = todo.model_dump(exclude_unset=True) + for key, value in todo_data.items(): + setattr(db_todo, key, value) + + db.commit() + db.refresh(db_todo) + return db_todo + +def delete_todo(db: Session, todo_id: int) -> bool: + db_todo = get_todo(db, todo_id) + if db_todo is None: + return False + + db.delete(db_todo) + db.commit() + return True \ No newline at end of file diff --git a/app/db/__init__.py b/app/db/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/app/db/session.py b/app/db/session.py new file mode 100644 index 0000000..635c60a --- /dev/null +++ b/app/db/session.py @@ -0,0 +1,28 @@ +from sqlalchemy import create_engine +from sqlalchemy.ext.declarative import declarative_base +from sqlalchemy.orm import sessionmaker +from pathlib import Path + +DB_DIR = Path("/projects/simpletodoapplication-3rp4k9/storage/db") +DB_DIR.mkdir(parents=True, exist_ok=True) + +SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite" + +engine = create_engine( + SQLALCHEMY_DATABASE_URL, + connect_args={"check_same_thread": False} +) + +SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine) + +Base = declarative_base() + +def get_db(): + db = SessionLocal() + try: + yield db + finally: + db.close() + +def create_db_and_tables(): + Base.metadata.create_all(bind=engine) \ No newline at end of file diff --git a/app/models/__init__.py b/app/models/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/app/models/todo.py b/app/models/todo.py new file mode 100644 index 0000000..3b7e387 --- /dev/null +++ b/app/models/todo.py @@ -0,0 +1,14 @@ +from sqlalchemy import Column, Integer, String, Boolean, DateTime +from sqlalchemy.sql import func + +from app.db.session import Base + +class Todo(Base): + __tablename__ = "todos" + + id = Column(Integer, primary_key=True, index=True) + title = Column(String, index=True) + description = Column(String, nullable=True) + completed = Column(Boolean, default=False) + created_at = Column(DateTime(timezone=True), server_default=func.now()) + updated_at = Column(DateTime(timezone=True), onupdate=func.now()) \ No newline at end of file diff --git a/app/schemas/__init__.py b/app/schemas/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/app/schemas/todo.py b/app/schemas/todo.py new file mode 100644 index 0000000..602c54a --- /dev/null +++ b/app/schemas/todo.py @@ -0,0 +1,25 @@ +from datetime import datetime +from typing import Optional + +from pydantic import BaseModel + +class TodoBase(BaseModel): + title: str + description: Optional[str] = None + completed: bool = False + +class TodoCreate(TodoBase): + pass + +class TodoUpdate(BaseModel): + title: Optional[str] = None + description: Optional[str] = None + completed: Optional[bool] = None + +class TodoResponse(TodoBase): + id: int + created_at: datetime + updated_at: Optional[datetime] = None + + class Config: + from_attributes = True \ No newline at end of file diff --git a/main.py b/main.py new file mode 100644 index 0000000..800a4b3 --- /dev/null +++ b/main.py @@ -0,0 +1,36 @@ +from fastapi import FastAPI +from fastapi.middleware.cors import CORSMiddleware +from pathlib import Path + +from app.api import api_router +from app.db.session import create_db_and_tables + +app = FastAPI( + title="Simple Todo API", + description="A simple Todo API", + version="0.1.0", +) + +# Configure CORS +app.add_middleware( + CORSMiddleware, + allow_origins=["*"], + allow_credentials=True, + allow_methods=["*"], + allow_headers=["*"], +) + +# Include routers +app.include_router(api_router) + +@app.get("/health", tags=["Health"]) +async def health(): + return {"status": "ok"} + +@app.on_event("startup") +def on_startup(): + create_db_and_tables() + +if __name__ == "__main__": + import uvicorn + uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True) \ No newline at end of file diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 0000000..5a524e1 --- /dev/null +++ b/requirements.txt @@ -0,0 +1,6 @@ +fastapi==0.104.1 +uvicorn==0.23.2 +sqlalchemy==2.0.23 +alembic==1.12.1 +pydantic==2.4.2 +python-dotenv==1.0.0 \ No newline at end of file