Add comprehensive travel app backend with FastAPI

- User authentication with JWT tokens - Trip management with itineraries - Destination database with search functionality - Booking management for flights, hotels, car rentals, activities - SQLite database with Alembic migrations - Health monitoring endpoint - CORS enabled for all origins - Complete API documentation at /docs and /redoc - Environment variable support for SECRET_KEY Requirements for production: - Set SECRET_KEY environment variable
2025-06-20 01:29:17 +00:00 · 2025-06-20 01:29:17 +00:00 · 2cb6659b63
commit 2cb6659b63
parent 886ca561a7
29 changed files with 1258 additions and 2 deletions
--- a/README.md
+++ b/README.md
@ -1,3 +1,91 @@
-# FastAPI Application
+# Travel App Backend

-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A comprehensive travel planning and booking API built with FastAPI, SQLAlchemy, and SQLite.
+
+## Features
+
+- **User Authentication**: JWT-based authentication with registration and login
+- **Trip Management**: Create, update, and manage travel trips with itineraries
+- **Destination Database**: Browse and search travel destinations
+- **Booking Management**: Handle various types of bookings (flights, hotels, car rentals, activities)
+- **Health Monitoring**: Built-in health check endpoint
+
+## API Endpoints
+
+### Authentication
+- `POST /auth/register` - Register a new user
+- `POST /auth/login` - Login and get access token
+- `GET /auth/me` - Get current user information
+
+### Trips
+- `POST /trips/` - Create a new trip
+- `GET /trips/` - Get all user trips
+- `GET /trips/{trip_id}` - Get specific trip
+- `PUT /trips/{trip_id}` - Update trip
+- `DELETE /trips/{trip_id}` - Delete trip
+- `POST /trips/{trip_id}/itinerary` - Add itinerary item
+- `GET /trips/{trip_id}/itinerary` - Get trip itinerary
+
+### Destinations
+- `GET /destinations/` - Get all destinations (with filters)
+- `POST /destinations/` - Create new destination
+- `GET /destinations/{destination_id}` - Get specific destination
+- `PUT /destinations/{destination_id}` - Update destination
+- `DELETE /destinations/{destination_id}` - Delete destination
+- `GET /destinations/search/` - Search destinations
+
+### Bookings
+- `POST /bookings/` - Create a new booking
+- `GET /bookings/` - Get all user bookings (with filters)
+- `GET /bookings/{booking_id}` - Get specific booking
+- `PUT /bookings/{booking_id}` - Update booking
+- `DELETE /bookings/{booking_id}` - Delete booking
+- `GET /bookings/trip/{trip_id}` - Get all bookings for a trip
+
+### System
+- `GET /` - API information
+- `GET /health` - Health check endpoint
+- `GET /docs` - Interactive API documentation
+- `GET /redoc` - Alternative API documentation
+
+## Installation
+
+1. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+2. Run database migrations:
+```bash
+alembic upgrade head
+```
+
+3. Start the application:
+```bash
+uvicorn main:app --reload
+```
+
+## Environment Variables
+
+Make sure to set the following environment variables:
+
+- `SECRET_KEY`: JWT secret key for token encryption (required for production)
+
+## Database
+
+The application uses SQLite database stored at `/app/storage/db/db.sqlite`.
+
+## Development
+
+The project uses Ruff for code formatting and linting. Run:
+
+```bash
+ruff check .
+ruff format .
+```
+
+## Documentation
+
+- API Documentation: http://localhost:8000/docs
+- Alternative Documentation: http://localhost:8000/redoc
+- OpenAPI JSON: http://localhost:8000/openapi.json
--- a/alembic.ini
+++ b/alembic.ini
@ -0,0 +1,41 @@
+[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
+import os
+
+sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+
+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 +1,180 @@
+"""Initial migration
+
+Revision ID: 001
+Revises:
+Create Date: 2024-01-01 00:00:00.000000
+
+"""
+
+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("username", 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)
+    op.create_index(op.f("ix_users_username"), "users", ["username"], unique=True)
+
+    # 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.Numeric(precision=10, scale=8), nullable=True),
+        sa.Column("longitude", sa.Numeric(precision=11, scale=8), nullable=True),
+        sa.Column("category", sa.String(), nullable=True),
+        sa.Column("rating", sa.Numeric(precision=3, scale=2), 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("start_date", sa.DateTime(), nullable=False),
+        sa.Column("end_date", sa.DateTime(), nullable=False),
+        sa.Column("budget", sa.Numeric(precision=10, scale=2), nullable=True),
+        sa.Column("status", sa.String(), nullable=True),
+        sa.Column("user_id", sa.Integer(), nullable=False),
+        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(
+            ["user_id"],
+            ["users.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_trips_id"), "trips", ["id"], unique=False)
+
+    # Create bookings table
+    op.create_table(
+        "bookings",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("booking_type", sa.String(), nullable=False),
+        sa.Column("reference_number", sa.String(), nullable=False),
+        sa.Column("provider", sa.String(), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("start_date", sa.DateTime(), nullable=False),
+        sa.Column("end_date", sa.DateTime(), nullable=True),
+        sa.Column("total_amount", sa.Numeric(precision=10, scale=2), nullable=False),
+        sa.Column("currency", sa.String(), nullable=True),
+        sa.Column("status", sa.String(), nullable=True),
+        sa.Column("booking_details", sa.Text(), nullable=True),
+        sa.Column("user_id", sa.Integer(), nullable=False),
+        sa.Column("trip_id", sa.Integer(), 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(
+            ["trip_id"],
+            ["trips.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_bookings_id"), "bookings", ["id"], unique=False)
+    op.create_index(
+        op.f("ix_bookings_reference_number"),
+        "bookings",
+        ["reference_number"],
+        unique=True,
+    )
+
+    # Create itineraries table
+    op.create_table(
+        "itineraries",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("trip_id", sa.Integer(), nullable=False),
+        sa.Column("destination_id", sa.Integer(), nullable=False),
+        sa.Column("day_number", sa.Integer(), nullable=False),
+        sa.Column("activity", sa.String(), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("start_time", sa.DateTime(), nullable=True),
+        sa.Column("end_time", sa.DateTime(), nullable=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("(CURRENT_TIMESTAMP)"),
+            nullable=True,
+        ),
+        sa.ForeignKeyConstraint(
+            ["destination_id"],
+            ["destinations.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["trip_id"],
+            ["trips.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_itineraries_id"), "itineraries", ["id"], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix_itineraries_id"), table_name="itineraries")
+    op.drop_table("itineraries")
+    op.drop_index(op.f("ix_bookings_reference_number"), table_name="bookings")
+    op.drop_index(op.f("ix_bookings_id"), table_name="bookings")
+    op.drop_table("bookings")
+    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_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")
--- a/app/init.py
+++ b/app/init.py
--- a/app/api/init.py
+++ b/app/api/init.py
--- a/app/api/routes/init.py
+++ b/app/api/routes/init.py
--- a/app/api/routes/auth.py
+++ b/app/api/routes/auth.py
@ -0,0 +1,81 @@
+from datetime import timedelta
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.user import UserCreate, UserResponse, Token
+from app.auth.security import (
+    verify_password,
+    get_password_hash,
+    create_access_token,
+    verify_token,
+    ACCESS_TOKEN_EXPIRE_MINUTES,
+)
+
+router = APIRouter()
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="auth/login")
+
+
+def get_user_by_email(db: Session, email: str):
+    return db.query(User).filter(User.email == email).first()
+
+
+def get_current_user(
+    token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)
+):
+    email = verify_token(token)
+    user = get_user_by_email(db, email=email)
+    if user is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    return user
+
+
+@router.post("/register", response_model=UserResponse)
+def register_user(user: UserCreate, db: Session = Depends(get_db)):
+    db_user = get_user_by_email(db, email=user.email)
+    if db_user:
+        raise HTTPException(status_code=400, detail="Email already registered")
+
+    db_user = db.query(User).filter(User.username == user.username).first()
+    if db_user:
+        raise HTTPException(status_code=400, detail="Username already taken")
+
+    hashed_password = get_password_hash(user.password)
+    db_user = User(
+        email=user.email,
+        username=user.username,
+        full_name=user.full_name,
+        hashed_password=hashed_password,
+    )
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    return db_user
+
+
+@router.post("/login", response_model=Token)
+def login_user(
+    form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(get_db)
+):
+    user = get_user_by_email(db, email=form_data.username)
+    if not user or not verify_password(form_data.password, user.hashed_password):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect email or password",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    access_token = create_access_token(
+        data={"sub": user.email}, expires_delta=access_token_expires
+    )
+    return {"access_token": access_token, "token_type": "bearer"}
+
+
+@router.get("/me", response_model=UserResponse)
+def read_users_me(current_user: User = Depends(get_current_user)):
+    return current_user
--- a/app/api/routes/bookings.py
+++ b/app/api/routes/bookings.py
@ -0,0 +1,116 @@
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+from typing import List, Optional
+from app.db.session import get_db
+from app.models.user import User
+from app.models.booking import Booking
+from app.schemas.booking import BookingCreate, BookingUpdate, BookingResponse
+from app.api.routes.auth import get_current_user
+
+router = APIRouter()
+
+
+@router.post("/", response_model=BookingResponse)
+def create_booking(
+    booking: BookingCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    db_booking = Booking(**booking.dict(), user_id=current_user.id)
+    db.add(db_booking)
+    db.commit()
+    db.refresh(db_booking)
+    return db_booking
+
+
+@router.get("/", response_model=List[BookingResponse])
+def get_user_bookings(
+    skip: int = 0,
+    limit: int = 100,
+    booking_type: Optional[str] = Query(None),
+    status: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    query = db.query(Booking).filter(Booking.user_id == current_user.id)
+
+    if booking_type:
+        query = query.filter(Booking.booking_type == booking_type)
+    if status:
+        query = query.filter(Booking.status == status)
+
+    bookings = query.offset(skip).limit(limit).all()
+    return bookings
+
+
+@router.get("/{booking_id}", response_model=BookingResponse)
+def get_booking(
+    booking_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    booking = (
+        db.query(Booking)
+        .filter(Booking.id == booking_id, Booking.user_id == current_user.id)
+        .first()
+    )
+    if not booking:
+        raise HTTPException(status_code=404, detail="Booking not found")
+    return booking
+
+
+@router.put("/{booking_id}", response_model=BookingResponse)
+def update_booking(
+    booking_id: int,
+    booking_update: BookingUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    booking = (
+        db.query(Booking)
+        .filter(Booking.id == booking_id, Booking.user_id == current_user.id)
+        .first()
+    )
+    if not booking:
+        raise HTTPException(status_code=404, detail="Booking not found")
+
+    update_data = booking_update.dict(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(booking, field, value)
+
+    db.commit()
+    db.refresh(booking)
+    return booking
+
+
+@router.delete("/{booking_id}")
+def delete_booking(
+    booking_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    booking = (
+        db.query(Booking)
+        .filter(Booking.id == booking_id, Booking.user_id == current_user.id)
+        .first()
+    )
+    if not booking:
+        raise HTTPException(status_code=404, detail="Booking not found")
+
+    db.delete(booking)
+    db.commit()
+    return {"message": "Booking deleted successfully"}
+
+
+@router.get("/trip/{trip_id}", response_model=List[BookingResponse])
+def get_trip_bookings(
+    trip_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    bookings = (
+        db.query(Booking)
+        .filter(Booking.trip_id == trip_id, Booking.user_id == current_user.id)
+        .all()
+    )
+    return bookings
--- a/app/api/routes/destinations.py
+++ b/app/api/routes/destinations.py
@ -0,0 +1,100 @@
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+from typing import List, Optional
+from app.db.session import get_db
+from app.models.destination import Destination
+from app.schemas.destination import (
+    DestinationCreate,
+    DestinationUpdate,
+    DestinationResponse,
+)
+
+router = APIRouter()
+
+
+@router.post("/", response_model=DestinationResponse)
+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.get("/", response_model=List[DestinationResponse])
+def get_destinations(
+    skip: int = 0,
+    limit: int = 100,
+    country: Optional[str] = Query(None),
+    category: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
+):
+    query = db.query(Destination)
+
+    if country:
+        query = query.filter(Destination.country.ilike(f"%{country}%"))
+    if category:
+        query = query.filter(Destination.category == category)
+
+    destinations = query.offset(skip).limit(limit).all()
+    return destinations
+
+
+@router.get("/{destination_id}", response_model=DestinationResponse)
+def get_destination(destination_id: int, db: Session = Depends(get_db)):
+    destination = db.query(Destination).filter(Destination.id == destination_id).first()
+    if not destination:
+        raise HTTPException(status_code=404, detail="Destination not found")
+    return destination
+
+
+@router.put("/{destination_id}", response_model=DestinationResponse)
+def update_destination(
+    destination_id: int,
+    destination_update: DestinationUpdate,
+    db: Session = Depends(get_db),
+):
+    destination = db.query(Destination).filter(Destination.id == destination_id).first()
+    if not destination:
+        raise HTTPException(status_code=404, detail="Destination not found")
+
+    update_data = destination_update.dict(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(destination, field, value)
+
+    db.commit()
+    db.refresh(destination)
+    return destination
+
+
+@router.delete("/{destination_id}")
+def delete_destination(destination_id: int, db: Session = Depends(get_db)):
+    destination = db.query(Destination).filter(Destination.id == destination_id).first()
+    if not destination:
+        raise HTTPException(status_code=404, detail="Destination not found")
+
+    db.delete(destination)
+    db.commit()
+    return {"message": "Destination deleted successfully"}
+
+
+@router.get("/search/", response_model=List[DestinationResponse])
+def search_destinations(
+    q: str = Query(..., description="Search query"),
+    skip: int = 0,
+    limit: int = 100,
+    db: Session = Depends(get_db),
+):
+    destinations = (
+        db.query(Destination)
+        .filter(
+            (Destination.name.ilike(f"%{q}%"))
+            | (Destination.city.ilike(f"%{q}%"))
+            | (Destination.country.ilike(f"%{q}%"))
+            | (Destination.description.ilike(f"%{q}%"))
+        )
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+    return destinations
--- a/app/api/routes/trips.py
+++ b/app/api/routes/trips.py
@ -0,0 +1,150 @@
+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.models.trip import Trip, Itinerary
+from app.schemas.trip import (
+    TripCreate,
+    TripUpdate,
+    TripResponse,
+    ItineraryCreate,
+    ItineraryResponse,
+)
+from app.api.routes.auth import get_current_user
+
+router = APIRouter()
+
+
+@router.post("/", response_model=TripResponse)
+def create_trip(
+    trip: TripCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    db_trip = Trip(**trip.dict(), user_id=current_user.id)
+    db.add(db_trip)
+    db.commit()
+    db.refresh(db_trip)
+    return db_trip
+
+
+@router.get("/", response_model=List[TripResponse])
+def get_user_trips(
+    skip: int = 0,
+    limit: int = 100,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trips = (
+        db.query(Trip)
+        .filter(Trip.user_id == current_user.id)
+        .offset(skip)
+        .limit(limit)
+        .all()
+    )
+    return trips
+
+
+@router.get("/{trip_id}", response_model=TripResponse)
+def get_trip(
+    trip_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trip = (
+        db.query(Trip)
+        .filter(Trip.id == trip_id, Trip.user_id == current_user.id)
+        .first()
+    )
+    if not trip:
+        raise HTTPException(status_code=404, detail="Trip not found")
+    return trip
+
+
+@router.put("/{trip_id}", response_model=TripResponse)
+def update_trip(
+    trip_id: int,
+    trip_update: TripUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trip = (
+        db.query(Trip)
+        .filter(Trip.id == trip_id, Trip.user_id == current_user.id)
+        .first()
+    )
+    if not trip:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    update_data = trip_update.dict(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(trip, field, value)
+
+    db.commit()
+    db.refresh(trip)
+    return trip
+
+
+@router.delete("/{trip_id}")
+def delete_trip(
+    trip_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trip = (
+        db.query(Trip)
+        .filter(Trip.id == trip_id, Trip.user_id == current_user.id)
+        .first()
+    )
+    if not trip:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    db.delete(trip)
+    db.commit()
+    return {"message": "Trip deleted successfully"}
+
+
+@router.post("/{trip_id}/itinerary", response_model=ItineraryResponse)
+def add_itinerary_item(
+    trip_id: int,
+    itinerary: ItineraryCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trip = (
+        db.query(Trip)
+        .filter(Trip.id == trip_id, Trip.user_id == current_user.id)
+        .first()
+    )
+    if not trip:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    db_itinerary = Itinerary(**itinerary.dict(), trip_id=trip_id)
+    db.add(db_itinerary)
+    db.commit()
+    db.refresh(db_itinerary)
+    return db_itinerary
+
+
+@router.get("/{trip_id}/itinerary", response_model=List[ItineraryResponse])
+def get_trip_itinerary(
+    trip_id: int,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    trip = (
+        db.query(Trip)
+        .filter(Trip.id == trip_id, Trip.user_id == current_user.id)
+        .first()
+    )
+    if not trip:
+        raise HTTPException(status_code=404, detail="Trip not found")
+
+    itinerary = (
+        db.query(Itinerary)
+        .filter(Itinerary.trip_id == trip_id)
+        .order_by(Itinerary.day_number, Itinerary.start_time)
+        .all()
+    )
+    return itinerary
--- a/app/auth/init.py
+++ b/app/auth/init.py
--- a/app/auth/security.py
+++ b/app/auth/security.py
@ -0,0 +1,50 @@
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import HTTPException, status
+import os
+
+SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-change-in-production")
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=15)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def verify_token(token: str):
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        email: str = payload.get("sub")
+        if email is None:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Could not validate credentials",
+                headers={"WWW-Authenticate": "Bearer"},
+            )
+        return email
+    except JWTError:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
--- a/app/db/init.py
+++ b/app/db/init.py
--- 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 sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from pathlib import Path
+
+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/init.py
+++ b/app/models/init.py
--- a/app/models/booking.py
+++ b/app/models/booking.py
@ -0,0 +1,27 @@
+from sqlalchemy import Column, Integer, String, DateTime, Text, ForeignKey, Numeric
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.db.base import Base
+
+
+class Booking(Base):
+    __tablename__ = "bookings"
+
+    id = Column(Integer, primary_key=True, index=True)
+    booking_type = Column(String, nullable=False)  # flight, hotel, car_rental, activity
+    reference_number = Column(String, unique=True, nullable=False)
+    provider = Column(String, nullable=False)
+    description = Column(Text)
+    start_date = Column(DateTime, nullable=False)
+    end_date = Column(DateTime)
+    total_amount = Column(Numeric(10, 2), nullable=False)
+    currency = Column(String, default="USD")
+    status = Column(String, default="confirmed")  # confirmed, cancelled, pending
+    booking_details = Column(Text)  # JSON string for flexible booking data
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    trip_id = Column(Integer, ForeignKey("trips.id"))
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    user = relationship("User", back_populates="bookings")
+    trip = relationship("Trip", back_populates="bookings")
--- a/app/models/destination.py
+++ b/app/models/destination.py
@ -0,0 +1,21 @@
+from sqlalchemy import Column, Integer, String, Text, Numeric
+from sqlalchemy.sql import func
+from sqlalchemy import DateTime
+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(Numeric(10, 8))
+    longitude = Column(Numeric(11, 8))
+    category = Column(String)  # city, beach, mountain, cultural, adventure, etc.
+    rating = Column(Numeric(3, 2))
+    image_url = Column(String)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
--- a/app/models/trip.py
+++ b/app/models/trip.py
@ -0,0 +1,40 @@
+from sqlalchemy import Column, Integer, String, DateTime, Text, ForeignKey, Numeric
+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)
+    start_date = Column(DateTime, nullable=False)
+    end_date = Column(DateTime, nullable=False)
+    budget = Column(Numeric(10, 2))
+    status = Column(String, default="planned")  # planned, active, completed, cancelled
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    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")
+    itinerary = relationship("Itinerary", back_populates="trip")
+    bookings = relationship("Booking", back_populates="trip")
+
+
+class Itinerary(Base):
+    __tablename__ = "itineraries"
+
+    id = Column(Integer, primary_key=True, index=True)
+    trip_id = Column(Integer, ForeignKey("trips.id"), nullable=False)
+    destination_id = Column(Integer, ForeignKey("destinations.id"), nullable=False)
+    day_number = Column(Integer, nullable=False)
+    activity = Column(String, nullable=False)
+    description = Column(Text)
+    start_time = Column(DateTime)
+    end_time = Column(DateTime)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    trip = relationship("Trip", back_populates="itinerary")
+    destination = relationship("Destination")
--- a/app/models/user.py
+++ b/app/models/user.py
@ -0,0 +1,20 @@
+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)
+    username = 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")
+    bookings = relationship("Booking", back_populates="user")
--- a/app/schemas/init.py
+++ b/app/schemas/init.py
--- a/app/schemas/booking.py
+++ b/app/schemas/booking.py
@ -0,0 +1,46 @@
+from pydantic import BaseModel
+from typing import Optional
+from datetime import datetime
+from decimal import Decimal
+
+
+class BookingBase(BaseModel):
+    booking_type: str
+    reference_number: str
+    provider: str
+    description: Optional[str] = None
+    start_date: datetime
+    end_date: Optional[datetime] = None
+    total_amount: Decimal
+    currency: str = "USD"
+    status: str = "confirmed"
+    booking_details: Optional[str] = None
+    trip_id: Optional[int] = None
+
+
+class BookingCreate(BookingBase):
+    pass
+
+
+class BookingUpdate(BaseModel):
+    booking_type: Optional[str] = None
+    reference_number: Optional[str] = None
+    provider: Optional[str] = None
+    description: Optional[str] = None
+    start_date: Optional[datetime] = None
+    end_date: Optional[datetime] = None
+    total_amount: Optional[Decimal] = None
+    currency: Optional[str] = None
+    status: Optional[str] = None
+    booking_details: Optional[str] = None
+    trip_id: Optional[int] = None
+
+
+class BookingResponse(BookingBase):
+    id: int
+    user_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
--- a/app/schemas/destination.py
+++ b/app/schemas/destination.py
@ -0,0 +1,41 @@
+from pydantic import BaseModel
+from typing import Optional
+from datetime import datetime
+from decimal import Decimal
+
+
+class DestinationBase(BaseModel):
+    name: str
+    country: str
+    city: str
+    description: Optional[str] = None
+    latitude: Optional[Decimal] = None
+    longitude: Optional[Decimal] = None
+    category: Optional[str] = None
+    rating: Optional[Decimal] = None
+    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[Decimal] = None
+    longitude: Optional[Decimal] = None
+    category: Optional[str] = None
+    rating: Optional[Decimal] = None
+    image_url: Optional[str] = None
+
+
+class DestinationResponse(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 +1,58 @@
+from pydantic import BaseModel
+from typing import Optional
+from datetime import datetime
+from decimal import Decimal
+
+
+class TripBase(BaseModel):
+    title: str
+    description: Optional[str] = None
+    start_date: datetime
+    end_date: datetime
+    budget: Optional[Decimal] = None
+    status: str = "planned"
+
+
+class TripCreate(TripBase):
+    pass
+
+
+class TripUpdate(BaseModel):
+    title: Optional[str] = None
+    description: Optional[str] = None
+    start_date: Optional[datetime] = None
+    end_date: Optional[datetime] = None
+    budget: Optional[Decimal] = None
+    status: Optional[str] = None
+
+
+class TripResponse(TripBase):
+    id: int
+    user_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class ItineraryBase(BaseModel):
+    destination_id: int
+    day_number: int
+    activity: str
+    description: Optional[str] = None
+    start_time: Optional[datetime] = None
+    end_time: Optional[datetime] = None
+
+
+class ItineraryCreate(ItineraryBase):
+    pass
+
+
+class ItineraryResponse(ItineraryBase):
+    id: int
+    trip_id: int
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
--- a/app/schemas/user.py
+++ b/app/schemas/user.py
@ -0,0 +1,44 @@
+from pydantic import BaseModel, EmailStr
+from typing import Optional
+from datetime import datetime
+
+
+class UserBase(BaseModel):
+    email: EmailStr
+    username: str
+    full_name: str
+
+
+class UserCreate(UserBase):
+    password: str
+
+
+class UserUpdate(BaseModel):
+    email: Optional[EmailStr] = None
+    username: Optional[str] = None
+    full_name: Optional[str] = None
+    password: Optional[str] = None
+
+
+class UserResponse(UserBase):
+    id: int
+    is_active: bool
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class UserLogin(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+
+class TokenData(BaseModel):
+    email: Optional[str] = None
--- a/main.py
+++ b/main.py
@ -0,0 +1,44 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api.routes import auth, trips, destinations, bookings
+from app.db.session import engine
+from app.db.base import Base
+
+app = FastAPI(
+    title="Travel App Backend",
+    description="A comprehensive travel planning and booking API",
+    version="1.0.0",
+    openapi_url="/openapi.json",
+)
+
+# CORS configuration
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Create database tables
+Base.metadata.create_all(bind=engine)
+
+# Include routers
+app.include_router(auth.router, prefix="/auth", tags=["Authentication"])
+app.include_router(trips.router, prefix="/trips", tags=["Trips"])
+app.include_router(destinations.router, prefix="/destinations", tags=["Destinations"])
+app.include_router(bookings.router, prefix="/bookings", tags=["Bookings"])
+
+
+@app.get("/")
+async def root():
+    return {
+        "title": "Travel App Backend",
+        "documentation": "/docs",
+        "health_check": "/health",
+    }
+
+
+@app.get("/health")
+async def health_check():
+    return {"status": "healthy", "service": "travel-app-backend"}
--- a/requirements.txt
+++ b/requirements.txt
@ -0,0 +1,10 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+sqlalchemy==2.0.23
+alembic==1.12.1
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+python-multipart==0.0.6
+pydantic==2.5.0
+pydantic-settings==2.1.0
+ruff==0.1.6