Initial Travel App Backend Implementation

- FastAPI application with user management, destinations, and trip planning - SQLite database with SQLAlchemy ORM - Database models for Users, Destinations, and Trips - Pydantic schemas for request/response validation - Full CRUD API endpoints for all resources - Alembic migrations setup - Health check endpoint - CORS configuration for development - Comprehensive documentation and README
2025-06-20 01:25:27 +00:00 · 2025-06-20 01:25:27 +00:00 · 2de9589e3d
commit 2de9589e3d
parent 1356a2afd7
18 changed files with 831 additions and 2 deletions
--- a/README.md
+++ b/README.md
@ -1,3 +1,138 @@
-# FastAPI Application
+# Travel App Backend

-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A FastAPI-based backend application for a travel planning and management system.
+
+## Features
+
+- **User Management**: Create and manage user accounts
+- **Destination Management**: Add, update, and browse travel destinations
+- **Trip Planning**: Create and manage travel trips with destinations, dates, and budgets
+- **RESTful API**: Full CRUD operations for all resources
+- **Database Integration**: SQLite database with SQLAlchemy ORM
+- **API Documentation**: Automatic OpenAPI documentation
+
+## Tech Stack
+
+- **Framework**: FastAPI
+- **Database**: SQLite
+- **ORM**: SQLAlchemy
+- **Migrations**: Alembic
+- **Validation**: Pydantic
+- **Server**: Uvicorn
+
+## Installation
+
+1. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+2. Run database migrations:
+```bash
+alembic upgrade head
+```
+
+3. Start the server:
+```bash
+uvicorn main:app --reload
+```
+
+The API will be available at `http://localhost:8000`
+
+## API Documentation
+
+- **Interactive Docs**: http://localhost:8000/docs
+- **ReDoc**: http://localhost:8000/redoc
+- **OpenAPI JSON**: http://localhost:8000/openapi.json
+
+## API Endpoints
+
+### Root
+- `GET /` - API information and links
+- `GET /health` - Health check endpoint
+
+### Users
+- `GET /api/users/` - List all users
+- `GET /api/users/{user_id}` - Get user by ID
+- `POST /api/users/` - Create new user
+- `PUT /api/users/{user_id}` - Update user
+
+### Destinations
+- `GET /api/destinations/` - List all destinations
+- `GET /api/destinations/{destination_id}` - Get destination by ID
+- `POST /api/destinations/` - Create new destination
+- `PUT /api/destinations/{destination_id}` - Update destination
+- `DELETE /api/destinations/{destination_id}` - Delete destination
+
+### Trips
+- `GET /api/trips/` - List all trips
+- `GET /api/trips/{trip_id}` - Get trip by ID
+- `GET /api/trips/user/{user_id}` - Get trips for specific user
+- `POST /api/trips/` - Create new trip
+- `PUT /api/trips/{trip_id}` - Update trip
+- `DELETE /api/trips/{trip_id}` - Delete trip
+
+## Database Schema
+
+### Users
+- `id`: Primary key
+- `email`: Unique email address
+- `full_name`: User's full name
+- `hashed_password`: Encrypted password
+- `is_active`: Account status
+- `created_at`: Account creation timestamp
+- `updated_at`: Last update timestamp
+
+### Destinations
+- `id`: Primary key
+- `name`: Destination name
+- `country`: Country name
+- `city`: City name
+- `description`: Destination description
+- `latitude`: GPS latitude
+- `longitude`: GPS longitude
+- `rating`: Destination rating (0-5)
+- `image_url`: Destination image URL
+- `created_at`: Creation timestamp
+- `updated_at`: Last update timestamp
+
+### Trips
+- `id`: Primary key
+- `title`: Trip title
+- `description`: Trip description
+- `user_id`: Foreign key to Users table
+- `destination_id`: Foreign key to Destinations table
+- `start_date`: Trip start date
+- `end_date`: Trip end date
+- `budget`: Trip budget
+- `status`: Trip status (planned, ongoing, completed, cancelled)
+- `created_at`: Creation timestamp
+- `updated_at`: Last update timestamp
+
+## Development
+
+### Running with Ruff
+```bash
+ruff check .
+ruff format .
+```
+
+### Database Migrations
+```bash
+# Create new migration
+alembic revision --autogenerate -m "Description"
+
+# Apply migrations
+alembic upgrade head
+
+# Rollback migration
+alembic downgrade -1
+```
+
+## Storage
+
+The application uses `/app/storage/db/` directory for SQLite database storage.
+
+## CORS Configuration
+
+The API is configured to allow all origins (*) for development purposes.
--- a/alembic.ini
+++ b/alembic.ini
@ -0,0 +1,42 @@
+[alembic]
+script_location = alembic
+prepend_sys_path = .
+version_path_separator = os
+
+sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+
+[post_write_hooks]
+
+[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
--- a/alembic/env.py
+++ b/alembic/env.py
@ -0,0 +1,50 @@
+from logging.config import fileConfig
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+from alembic import context
+import sys
+from pathlib import Path
+
+sys.path.append(str(Path(__file__).parent.parent))
+
+from app.db.base import Base
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    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:
+    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()
--- a/alembic/script.py.mako
+++ 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"}
--- a/alembic/versions/001_initial_migration.py
+++ b/alembic/versions/001_initial_migration.py
@ -0,0 +1,106 @@
+"""Initial migration
+
+Revision ID: 001
+Revises:
+Create Date: 2024-01-01 12:00:00.000000
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = "001"
+down_revision = None
+branch_labels = None
+depends_on = 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("full_name", 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(timezone=True),
+            server_default=sa.text("(CURRENT_TIMESTAMP)"),
+            nullable=True,
+        ),
+        sa.Column("updated_at", sa.DateTime(timezone=True), 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)
+
+    # Create destinations table
+    op.create_table(
+        "destinations",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sa.String(), nullable=False),
+        sa.Column("country", sa.String(), nullable=False),
+        sa.Column("city", sa.String(), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("latitude", sa.Float(), nullable=True),
+        sa.Column("longitude", sa.Float(), nullable=True),
+        sa.Column("rating", sa.Float(), nullable=True),
+        sa.Column("image_url", sa.String(), nullable=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("(CURRENT_TIMESTAMP)"),
+            nullable=True,
+        ),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_destinations_id"), "destinations", ["id"], unique=False)
+    op.create_index(
+        op.f("ix_destinations_name"), "destinations", ["name"], unique=False
+    )
+
+    # Create trips table
+    op.create_table(
+        "trips",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("title", sa.String(), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("user_id", sa.Integer(), nullable=False),
+        sa.Column("destination_id", sa.Integer(), nullable=False),
+        sa.Column("start_date", sa.DateTime(), nullable=False),
+        sa.Column("end_date", sa.DateTime(), nullable=False),
+        sa.Column("budget", sa.Float(), nullable=True),
+        sa.Column("status", sa.String(), nullable=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("(CURRENT_TIMESTAMP)"),
+            nullable=True,
+        ),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["destination_id"],
+            ["destinations.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_trips_id"), "trips", ["id"], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix_trips_id"), table_name="trips")
+    op.drop_table("trips")
+    op.drop_index(op.f("ix_destinations_name"), table_name="destinations")
+    op.drop_index(op.f("ix_destinations_id"), table_name="destinations")
+    op.drop_table("destinations")
+    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")
--- a/app/api/destinations.py
+++ b/app/api/destinations.py
@ -0,0 +1,67 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from typing import List
+from app.db.session import get_db
+from app.models.destination import Destination
+from app.schemas.destination import (
+    Destination as DestinationSchema,
+    DestinationCreate,
+    DestinationUpdate,
+)
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[DestinationSchema])
+def get_destinations(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
+    destinations = db.query(Destination).offset(skip).limit(limit).all()
+    return destinations
+
+
+@router.get("/{destination_id}", response_model=DestinationSchema)
+def get_destination(destination_id: int, db: Session = Depends(get_db)):
+    destination = db.query(Destination).filter(Destination.id == destination_id).first()
+    if destination is None:
+        raise HTTPException(status_code=404, detail="Destination not found")
+    return destination
+
+
+@router.post("/", response_model=DestinationSchema)
+def create_destination(destination: DestinationCreate, db: Session = Depends(get_db)):
+    db_destination = Destination(**destination.dict())
+    db.add(db_destination)
+    db.commit()
+    db.refresh(db_destination)
+    return db_destination
+
+
+@router.put("/{destination_id}", response_model=DestinationSchema)
+def update_destination(
+    destination_id: int, destination: DestinationUpdate, db: Session = Depends(get_db)
+):
+    db_destination = (
+        db.query(Destination).filter(Destination.id == destination_id).first()
+    )
+    if db_destination is None:
+        raise HTTPException(status_code=404, detail="Destination not found")
+
+    update_data = destination.dict(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(db_destination, field, value)
+
+    db.commit()
+    db.refresh(db_destination)
+    return db_destination
+
+
+@router.delete("/{destination_id}")
+def delete_destination(destination_id: int, db: Session = Depends(get_db)):
+    db_destination = (
+        db.query(Destination).filter(Destination.id == destination_id).first()
+    )
+    if db_destination is None:
+        raise HTTPException(status_code=404, detail="Destination not found")
+
+    db.delete(db_destination)
+    db.commit()
+    return {"message": "Destination deleted successfully"}
--- a/app/api/trips.py
+++ b/app/api/trips.py
@ -0,0 +1,92 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from typing import List
+from app.db.session import get_db
+from app.models.trip import Trip
+from app.models.user import User
+from app.models.destination import Destination
+from app.schemas.trip import Trip as TripSchema, TripCreate, TripUpdate
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[TripSchema])
+def get_trips(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
+    trips = db.query(Trip).offset(skip).limit(limit).all()
+    return trips
+
+
+@router.get("/{trip_id}", response_model=TripSchema)
+def get_trip(trip_id: int, db: Session = Depends(get_db)):
+    trip = db.query(Trip).filter(Trip.id == trip_id).first()
+    if trip is None:
+        raise HTTPException(status_code=404, detail="Trip not found")
+    return trip
+
+
+@router.get("/user/{user_id}", response_model=List[TripSchema])
+def get_user_trips(
+    user_id: int, skip: int = 0, limit: int = 100, db: Session = Depends(get_db)
+):
+    user = db.query(User).filter(User.id == user_id).first()
+    if user is None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    trips = (
+        db.query(Trip).filter(Trip.user_id == user_id).offset(skip).limit(limit).all()
+    )
+    return trips
+
+
+@router.post("/", response_model=TripSchema)
+def create_trip(trip: TripCreate, user_id: int, db: Session = Depends(get_db)):
+    user = db.query(User).filter(User.id == user_id).first()
+    if user is None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    destination = (
+        db.query(Destination).filter(Destination.id == trip.destination_id).first()
+    )
+    if destination is None:
+        raise HTTPException(status_code=404, detail="Destination not found")
+
+    db_trip = Trip(**trip.dict(), user_id=user_id)
+    db.add(db_trip)
+    db.commit()
+    db.refresh(db_trip)
+    return db_trip
+
+
+@router.put("/{trip_id}", response_model=TripSchema)
+def update_trip(trip_id: int, trip: TripUpdate, db: Session = Depends(get_db)):
+    db_trip = db.query(Trip).filter(Trip.id == trip_id).first()
+    if db_trip is None:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    update_data = trip.dict(exclude_unset=True)
+    if "destination_id" in update_data:
+        destination = (
+            db.query(Destination)
+            .filter(Destination.id == update_data["destination_id"])
+            .first()
+        )
+        if destination is None:
+            raise HTTPException(status_code=404, detail="Destination not found")
+
+    for field, value in update_data.items():
+        setattr(db_trip, field, value)
+
+    db.commit()
+    db.refresh(db_trip)
+    return db_trip
+
+
+@router.delete("/{trip_id}")
+def delete_trip(trip_id: int, db: Session = Depends(get_db)):
+    db_trip = db.query(Trip).filter(Trip.id == trip_id).first()
+    if db_trip is None:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    db.delete(db_trip)
+    db.commit()
+    return {"message": "Trip deleted successfully"}
--- a/app/api/users.py
+++ b/app/api/users.py
@ -0,0 +1,60 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from typing import List
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.user import User as UserSchema, UserCreate, UserUpdate
+
+router = APIRouter()
+
+
+def get_password_hash(password: str) -> str:
+    return f"hashed_{password}"
+
+
+@router.get("/", response_model=List[UserSchema])
+def get_users(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
+    users = db.query(User).offset(skip).limit(limit).all()
+    return users
+
+
+@router.get("/{user_id}", response_model=UserSchema)
+def get_user(user_id: int, db: Session = Depends(get_db)):
+    user = db.query(User).filter(User.id == user_id).first()
+    if user is None:
+        raise HTTPException(status_code=404, detail="User not found")
+    return user
+
+
+@router.post("/", response_model=UserSchema)
+def create_user(user: UserCreate, db: Session = Depends(get_db)):
+    db_user = db.query(User).filter(User.email == user.email).first()
+    if db_user:
+        raise HTTPException(status_code=400, detail="Email already registered")
+
+    hashed_password = get_password_hash(user.password)
+    db_user = User(
+        email=user.email, full_name=user.full_name, hashed_password=hashed_password
+    )
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    return db_user
+
+
+@router.put("/{user_id}", response_model=UserSchema)
+def update_user(user_id: int, user: UserUpdate, db: Session = Depends(get_db)):
+    db_user = db.query(User).filter(User.id == user_id).first()
+    if db_user is None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    update_data = user.dict(exclude_unset=True)
+    if "password" in update_data:
+        update_data["hashed_password"] = get_password_hash(update_data.pop("password"))
+
+    for field, value in update_data.items():
+        setattr(db_user, field, value)
+
+    db.commit()
+    db.refresh(db_user)
+    return db_user
--- a/app/db/base.py
+++ b/app/db/base.py
@ -0,0 +1,3 @@
+from sqlalchemy.ext.declarative import declarative_base
+
+Base = declarative_base()
--- a/app/db/session.py
+++ b/app/db/session.py
@ -0,0 +1,22 @@
+from pathlib import Path
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+DB_DIR = Path("/app") / "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)
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
--- a/app/models/destination.py
+++ b/app/models/destination.py
@ -0,0 +1,22 @@
+from sqlalchemy import Column, Integer, String, Text, Float, DateTime
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.db.base import Base
+
+
+class Destination(Base):
+    __tablename__ = "destinations"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, nullable=False, index=True)
+    country = Column(String, nullable=False)
+    city = Column(String, nullable=False)
+    description = Column(Text)
+    latitude = Column(Float)
+    longitude = Column(Float)
+    rating = Column(Float, default=0.0)
+    image_url = Column(String)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    trips = relationship("Trip", back_populates="destination")
--- a/app/models/trip.py
+++ b/app/models/trip.py
@ -0,0 +1,23 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Float
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.db.base import Base
+
+
+class Trip(Base):
+    __tablename__ = "trips"
+
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String, nullable=False)
+    description = Column(Text)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    destination_id = Column(Integer, ForeignKey("destinations.id"), nullable=False)
+    start_date = Column(DateTime, nullable=False)
+    end_date = Column(DateTime, nullable=False)
+    budget = Column(Float)
+    status = Column(String, default="planned")  # planned, ongoing, completed, cancelled
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    user = relationship("User", back_populates="trips")
+    destination = relationship("Destination", back_populates="trips")
--- a/app/models/user.py
+++ b/app/models/user.py
@ -0,0 +1,18 @@
+from sqlalchemy import Column, Integer, String, DateTime, Boolean
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.db.base import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    full_name = Column(String, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    trips = relationship("Trip", back_populates="user")
--- a/app/schemas/destination.py
+++ b/app/schemas/destination.py
@ -0,0 +1,38 @@
+from pydantic import BaseModel
+from datetime import datetime
+from typing import Optional
+
+
+class DestinationBase(BaseModel):
+    name: str
+    country: str
+    city: str
+    description: Optional[str] = None
+    latitude: Optional[float] = None
+    longitude: Optional[float] = None
+    rating: Optional[float] = 0.0
+    image_url: Optional[str] = None
+
+
+class DestinationCreate(DestinationBase):
+    pass
+
+
+class DestinationUpdate(BaseModel):
+    name: Optional[str] = None
+    country: Optional[str] = None
+    city: Optional[str] = None
+    description: Optional[str] = None
+    latitude: Optional[float] = None
+    longitude: Optional[float] = None
+    rating: Optional[float] = None
+    image_url: Optional[str] = None
+
+
+class Destination(DestinationBase):
+    id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
--- a/app/schemas/trip.py
+++ b/app/schemas/trip.py
@ -0,0 +1,41 @@
+from pydantic import BaseModel
+from datetime import datetime
+from typing import Optional
+from .user import User
+from .destination import Destination
+
+
+class TripBase(BaseModel):
+    title: str
+    description: Optional[str] = None
+    destination_id: int
+    start_date: datetime
+    end_date: datetime
+    budget: Optional[float] = None
+    status: Optional[str] = "planned"
+
+
+class TripCreate(TripBase):
+    pass
+
+
+class TripUpdate(BaseModel):
+    title: Optional[str] = None
+    description: Optional[str] = None
+    destination_id: Optional[int] = None
+    start_date: Optional[datetime] = None
+    end_date: Optional[datetime] = None
+    budget: Optional[float] = None
+    status: Optional[str] = None
+
+
+class Trip(TripBase):
+    id: int
+    user_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+    user: Optional[User] = None
+    destination: Optional[Destination] = None
+
+    class Config:
+        from_attributes = True
--- a/app/schemas/user.py
+++ b/app/schemas/user.py
@ -0,0 +1,27 @@
+from pydantic import BaseModel, EmailStr
+from datetime import datetime
+from typing import Optional
+
+
+class UserBase(BaseModel):
+    email: EmailStr
+    full_name: str
+
+
+class UserCreate(UserBase):
+    password: str
+
+
+class UserUpdate(BaseModel):
+    full_name: Optional[str] = None
+    password: Optional[str] = None
+
+
+class User(UserBase):
+    id: int
+    is_active: bool
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
--- a/main.py
+++ b/main.py
@ -0,0 +1,51 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api import users, destinations, trips
+from app.db.session import engine
+from app.db.base import Base
+
+Base.metadata.create_all(bind=engine)
+
+app = FastAPI(
+    title="Travel App API",
+    description="A travel planning and management API",
+    version="1.0.0",
+    openapi_url="/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+@app.get("/")
+def read_root():
+    return {
+        "title": "Travel App API",
+        "description": "A travel planning and management API",
+        "documentation": "/docs",
+        "health": "/health",
+    }
+
+
+@app.get("/health")
+def health_check():
+    return {"status": "healthy", "service": "Travel App API", "version": "1.0.0"}
+
+
+app.include_router(users.router, prefix="/api/users", tags=["users"])
+app.include_router(
+    destinations.router, prefix="/api/destinations", tags=["destinations"]
+)
+app.include_router(trips.router, prefix="/api/trips", tags=["trips"])
+
+if __name__ == "__main__":
+    import uvicorn
+
+    uvicorn.run(app, host="0.0.0.0", port=8000)
--- a/requirements.txt
+++ b/requirements.txt
@ -0,0 +1,8 @@
+fastapi==0.104.1
+uvicorn==0.24.0
+sqlalchemy==2.0.23
+alembic==1.12.1
+pydantic==2.5.0
+python-multipart==0.0.6
+email-validator==2.1.0
+ruff==0.1.6