Implement complete Stripe payment integration service

- Created FastAPI application with Stripe payment processing
- Added payment intent creation, retrieval, and webhook handling
- Implemented SQLite database with payments and payment_methods tables
- Set up Alembic for database migrations
- Added comprehensive API endpoints for payment management
- Configured CORS middleware for cross-origin requests
- Added health check and service information endpoints
- Created complete project documentation with setup instructions
- Integrated Ruff for code formatting and linting

README.md

@@ -1,3 +1,144 @@
-# FastAPI Application
+# Stripe Payment Integration Service
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A FastAPI service for handling Stripe payments with complete payment processing capabilities.
+
+## Features
+
+- Create and manage Stripe payment intents
+- Process payments securely
+- Handle Stripe webhooks for payment status updates
+- Store payment records in SQLite database
+- RESTful API with automatic OpenAPI documentation
+- Health check endpoint
+
+## Environment Variables
+
+You need to set the following environment variables:
+
+```bash
+STRIPE_SECRET_KEY=sk_test_your_stripe_secret_key_here
+STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret_here
+```
+
+## Installation
+
+1. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+2. Run database migrations:
+```bash
+alembic upgrade head
+```
+
+3. Start the development server:
+```bash
+uvicorn main:app --reload --host 0.0.0.0 --port 8000
+```
+
+## API Endpoints
+
+### Base Endpoints
+- `GET /` - Service information
+- `GET /health` - Health check
+- `GET /docs` - Interactive API documentation
+- `GET /redoc` - Alternative API documentation
+
+### Payment Endpoints
+- `POST /api/v1/payments/create-payment-intent` - Create a new payment intent
+- `GET /api/v1/payments/payment-intent/{payment_intent_id}` - Get payment intent details
+- `GET /api/v1/payments/payment/{payment_intent_id}` - Get payment record from database
+- `POST /api/v1/payments/webhook` - Handle Stripe webhooks
+
+## Usage Example
+
+### Create a Payment Intent
+
+```bash
+curl -X POST "http://localhost:8000/api/v1/payments/create-payment-intent" \
+     -H "Content-Type: application/json" \
+     -d '{
+       "amount": 2000,
+       "currency": "usd",
+       "customer_email": "customer@example.com",
+       "customer_name": "John Doe",
+       "description": "Payment for services"
+     }'
+```
+
+### Response
+
+```json
+{
+  "client_secret": "pi_xxxxx_secret_xxxxx",
+  "payment_intent_id": "pi_xxxxx",
+  "amount": 2000,
+  "currency": "usd",
+  "status": "requires_payment_method"
+}
+```
+
+## Database Schema
+
+The service uses SQLite with the following tables:
+
+### Payments Table
+- `id` - Primary key
+- `stripe_payment_intent_id` - Stripe payment intent ID
+- `amount` - Payment amount
+- `currency` - Payment currency
+- `status` - Payment status
+- `customer_email` - Customer email
+- `customer_name` - Customer name
+- `description` - Payment description
+- `metadata` - Additional metadata (JSON)
+- `created_at` - Creation timestamp
+- `updated_at` - Last update timestamp
+- `is_webhook_processed` - Webhook processing status
+
+### Payment Methods Table
+- `id` - Primary key
+- `stripe_payment_method_id` - Stripe payment method ID
+- `customer_email` - Customer email
+- `type` - Payment method type
+- `card_brand` - Card brand (for card payments)
+- `card_last_four` - Last four digits of card
+- `is_default` - Default payment method flag
+- `created_at` - Creation timestamp
+
+## Development
+
+### Code Formatting
+The project uses Ruff for code formatting and linting:
+
+```bash
+ruff check .
+ruff format .
+```
+
+### Database Migrations
+To create a new migration:
+
+```bash
+alembic revision --autogenerate -m "Description of changes"
+```
+
+To apply migrations:
+
+```bash
+alembic upgrade head
+```
+
+## Webhook Configuration
+
+Configure your Stripe webhook endpoint URL in the Stripe Dashboard:
+- URL: `https://yourdomain.com/api/v1/payments/webhook`
+- Events: `payment_intent.succeeded`, `payment_intent.payment_failed`
+
+## Security Notes
+
+- Always use HTTPS in production
+- Store Stripe keys securely as environment variables
+- Verify webhook signatures for security
+- Never expose secret keys in client-side code

alembic.ini

@@ -0,0 +1,97 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(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 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
+
+# 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 +1,79 @@
+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
+
+# Add the project root to the path
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+
+from app.db.base 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:
+        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()

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"}

alembic/versions/001_initial_migration.py

@@ -0,0 +1,101 @@
+"""Initial migration - create payments and payment_methods tables
+
+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 payments table
+    op.create_table(
+        "payments",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("stripe_payment_intent_id", sa.String(), nullable=True),
+        sa.Column("amount", sa.Float(), nullable=False),
+        sa.Column("currency", sa.String(), nullable=True),
+        sa.Column("status", sa.String(), nullable=False),
+        sa.Column("customer_email", sa.String(), nullable=True),
+        sa.Column("customer_name", sa.String(), nullable=True),
+        sa.Column("description", sa.String(), nullable=True),
+        sa.Column("metadata", 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.Column("is_webhook_processed", sa.Boolean(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        op.f("ix_payments_customer_email"), "payments", ["customer_email"], unique=False
+    )
+    op.create_index(op.f("ix_payments_id"), "payments", ["id"], unique=False)
+    op.create_index(
+        op.f("ix_payments_stripe_payment_intent_id"),
+        "payments",
+        ["stripe_payment_intent_id"],
+        unique=True,
+    )
+
+    # Create payment_methods table
+    op.create_table(
+        "payment_methods",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("stripe_payment_method_id", sa.String(), nullable=True),
+        sa.Column("customer_email", sa.String(), nullable=True),
+        sa.Column("type", sa.String(), nullable=False),
+        sa.Column("card_brand", sa.String(), nullable=True),
+        sa.Column("card_last_four", sa.String(), nullable=True),
+        sa.Column("is_default", sa.Boolean(), nullable=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("(CURRENT_TIMESTAMP)"),
+            nullable=True,
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        op.f("ix_payment_methods_customer_email"),
+        "payment_methods",
+        ["customer_email"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_payment_methods_id"), "payment_methods", ["id"], unique=False
+    )
+    op.create_index(
+        op.f("ix_payment_methods_stripe_payment_method_id"),
+        "payment_methods",
+        ["stripe_payment_method_id"],
+        unique=True,
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(
+        op.f("ix_payment_methods_stripe_payment_method_id"),
+        table_name="payment_methods",
+    )
+    op.drop_index(op.f("ix_payment_methods_id"), table_name="payment_methods")
+    op.drop_index(
+        op.f("ix_payment_methods_customer_email"), table_name="payment_methods"
+    )
+    op.drop_table("payment_methods")
+    op.drop_index(op.f("ix_payments_stripe_payment_intent_id"), table_name="payments")
+    op.drop_index(op.f("ix_payments_id"), table_name="payments")
+    op.drop_index(op.f("ix_payments_customer_email"), table_name="payments")
+    op.drop_table("payments")

app/api/__init__.py

@@ -0,0 +1,3 @@
+from .payments import router as payments_router
+
+__all__ = ["payments_router"]

app/api/payments.py

@@ -0,0 +1,156 @@
+from fastapi import APIRouter, Depends, HTTPException, Request
+from sqlalchemy.orm import Session
+from typing import Optional, Dict, Any
+from pydantic import BaseModel, EmailStr
+import stripe
+import json
+
+from app.db.session import get_db
+from app.services.stripe_service import StripeService
+from app.models.payment import Payment
+
+router = APIRouter(prefix="/payments", tags=["payments"])
+
+
+class CreatePaymentIntentRequest(BaseModel):
+    amount: int  # Amount in cents
+    currency: str = "usd"
+    customer_email: Optional[EmailStr] = None
+    customer_name: Optional[str] = None
+    description: Optional[str] = None
+    metadata: Optional[Dict[str, Any]] = None
+
+
+class PaymentIntentResponse(BaseModel):
+    client_secret: str
+    payment_intent_id: str
+    amount: int
+    currency: str
+    status: str
+
+
+class PaymentResponse(BaseModel):
+    id: int
+    stripe_payment_intent_id: str
+    amount: float
+    currency: str
+    status: str
+    customer_email: Optional[str]
+    customer_name: Optional[str]
+    description: Optional[str]
+    created_at: str
+
+
+@router.post("/create-payment-intent", response_model=PaymentIntentResponse)
+async def create_payment_intent(
+    request: CreatePaymentIntentRequest, db: Session = Depends(get_db)
+):
+    """Create a new payment intent"""
+    try:
+        stripe_service = StripeService()
+
+        # Create payment intent with Stripe
+        payment_intent = stripe_service.create_payment_intent(
+            amount=request.amount,
+            currency=request.currency,
+            customer_email=request.customer_email,
+            customer_name=request.customer_name,
+            description=request.description,
+            metadata=request.metadata,
+        )
+
+        # Save to database
+        stripe_service.save_payment_to_db(
+            db=db,
+            payment_intent=payment_intent,
+            customer_email=request.customer_email,
+            customer_name=request.customer_name,
+        )
+
+        return PaymentIntentResponse(
+            client_secret=payment_intent.client_secret,
+            payment_intent_id=payment_intent.id,
+            amount=payment_intent.amount,
+            currency=payment_intent.currency,
+            status=payment_intent.status,
+        )
+
+    except stripe.error.StripeError as e:
+        raise HTTPException(status_code=400, detail=f"Stripe error: {str(e)}")
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Internal server error: {str(e)}")
+
+
+@router.get("/payment-intent/{payment_intent_id}", response_model=PaymentIntentResponse)
+async def get_payment_intent(payment_intent_id: str):
+    """Retrieve a payment intent"""
+    try:
+        stripe_service = StripeService()
+        payment_intent = stripe_service.retrieve_payment_intent(payment_intent_id)
+
+        return PaymentIntentResponse(
+            client_secret=payment_intent.client_secret,
+            payment_intent_id=payment_intent.id,
+            amount=payment_intent.amount,
+            currency=payment_intent.currency,
+            status=payment_intent.status,
+        )
+
+    except stripe.error.StripeError as e:
+        raise HTTPException(status_code=400, detail=f"Stripe error: {str(e)}")
+
+
+@router.get("/payment/{payment_intent_id}", response_model=PaymentResponse)
+async def get_payment(payment_intent_id: str, db: Session = Depends(get_db)):
+    """Get payment details from database"""
+    payment = (
+        db.query(Payment)
+        .filter(Payment.stripe_payment_intent_id == payment_intent_id)
+        .first()
+    )
+    if not payment:
+        raise HTTPException(status_code=404, detail="Payment not found")
+
+    return PaymentResponse(
+        id=payment.id,
+        stripe_payment_intent_id=payment.stripe_payment_intent_id,
+        amount=payment.amount,
+        currency=payment.currency,
+        status=payment.status,
+        customer_email=payment.customer_email,
+        customer_name=payment.customer_name,
+        description=payment.description,
+        created_at=payment.created_at.isoformat() if payment.created_at else "",
+    )
+
+
+@router.post("/webhook")
+async def stripe_webhook(request: Request, db: Session = Depends(get_db)):
+    """Handle Stripe webhooks"""
+    payload = await request.body()
+    sig_header = request.headers.get("stripe-signature")
+
+    if not sig_header:
+        raise HTTPException(status_code=400, detail="Missing Stripe signature")
+
+    stripe_service = StripeService()
+
+    # Verify webhook signature
+    if not stripe_service.verify_webhook_signature(payload, sig_header):
+        raise HTTPException(status_code=400, detail="Invalid webhook signature")
+
+    try:
+        event = json.loads(payload)
+
+        # Handle the event
+        if stripe_service.handle_webhook_event(db, event):
+            return {"status": "success"}
+        else:
+            return {"status": "unhandled_event_type"}
+
+    except json.JSONDecodeError:
+        raise HTTPException(status_code=400, detail="Invalid JSON payload")
+    except Exception as e:
+        raise HTTPException(
+            status_code=500, detail=f"Webhook processing error: {str(e)}"
+        )

app/db/base.py

@@ -0,0 +1,17 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+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)
+
+Base = declarative_base()

app/db/session.py

@@ -0,0 +1,9 @@
+from app.db.base import SessionLocal
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/__init__.py

@@ -0,0 +1,3 @@
+from .payment import Payment, PaymentMethod
+
+__all__ = ["Payment", "PaymentMethod"]

app/models/payment.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, Integer, String, Float, DateTime, Boolean
+from sqlalchemy.sql import func
+from app.db.base import Base
+
+
+class Payment(Base):
+    __tablename__ = "payments"
+
+    id = Column(Integer, primary_key=True, index=True)
+    stripe_payment_intent_id = Column(String, unique=True, index=True)
+    amount = Column(Float, nullable=False)
+    currency = Column(String, default="usd")
+    status = Column(String, nullable=False)
+    customer_email = Column(String, index=True)
+    customer_name = Column(String)
+    description = Column(String)
+    metadata = Column(String)  # JSON string for additional data
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    is_webhook_processed = Column(Boolean, default=False)
+
+
+class PaymentMethod(Base):
+    __tablename__ = "payment_methods"
+
+    id = Column(Integer, primary_key=True, index=True)
+    stripe_payment_method_id = Column(String, unique=True, index=True)
+    customer_email = Column(String, index=True)
+    type = Column(String, nullable=False)  # card, bank_account, etc.
+    card_brand = Column(String)  # visa, mastercard, etc.
+    card_last_four = Column(String)
+    is_default = Column(Boolean, default=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())

app/services/stripe_service.py

@@ -0,0 +1,130 @@
+import stripe
+import os
+from typing import Dict, Any, Optional
+from sqlalchemy.orm import Session
+from app.models.payment import Payment
+import json
+
+
+class StripeService:
+    def __init__(self):
+        stripe.api_key = os.getenv("STRIPE_SECRET_KEY")
+        self.webhook_secret = os.getenv("STRIPE_WEBHOOK_SECRET")
+
+    def create_payment_intent(
+        self,
+        amount: int,
+        currency: str = "usd",
+        customer_email: Optional[str] = None,
+        customer_name: Optional[str] = None,
+        description: Optional[str] = None,
+        metadata: Optional[Dict[str, Any]] = None,
+    ) -> stripe.PaymentIntent:
+        """Create a Stripe payment intent"""
+        payment_intent_data = {
+            "amount": amount,
+            "currency": currency,
+            "automatic_payment_methods": {"enabled": True},
+        }
+
+        if customer_email:
+            payment_intent_data["receipt_email"] = customer_email
+
+        if description:
+            payment_intent_data["description"] = description
+
+        if metadata:
+            payment_intent_data["metadata"] = metadata
+
+        return stripe.PaymentIntent.create(**payment_intent_data)
+
+    def confirm_payment_intent(self, payment_intent_id: str) -> stripe.PaymentIntent:
+        """Confirm a payment intent"""
+        return stripe.PaymentIntent.confirm(payment_intent_id)
+
+    def retrieve_payment_intent(self, payment_intent_id: str) -> stripe.PaymentIntent:
+        """Retrieve a payment intent"""
+        return stripe.PaymentIntent.retrieve(payment_intent_id)
+
+    def create_customer(
+        self, email: str, name: Optional[str] = None
+    ) -> stripe.Customer:
+        """Create a Stripe customer"""
+        customer_data = {"email": email}
+        if name:
+            customer_data["name"] = name
+        return stripe.Customer.create(**customer_data)
+
+    def save_payment_to_db(
+        self,
+        db: Session,
+        payment_intent: stripe.PaymentIntent,
+        customer_email: Optional[str] = None,
+        customer_name: Optional[str] = None,
+    ) -> Payment:
+        """Save payment data to database"""
+        payment = Payment(
+            stripe_payment_intent_id=payment_intent.id,
+            amount=payment_intent.amount / 100,  # Convert from cents
+            currency=payment_intent.currency,
+            status=payment_intent.status,
+            customer_email=customer_email,
+            customer_name=customer_name,
+            description=payment_intent.description,
+            metadata=json.dumps(payment_intent.metadata)
+            if payment_intent.metadata
+            else None,
+        )
+        db.add(payment)
+        db.commit()
+        db.refresh(payment)
+        return payment
+
+    def update_payment_status(
+        self, db: Session, payment_intent_id: str, status: str
+    ) -> Optional[Payment]:
+        """Update payment status in database"""
+        payment = (
+            db.query(Payment)
+            .filter(Payment.stripe_payment_intent_id == payment_intent_id)
+            .first()
+        )
+        if payment:
+            payment.status = status
+            db.commit()
+            db.refresh(payment)
+        return payment
+
+    def verify_webhook_signature(self, payload: bytes, sig_header: str) -> bool:
+        """Verify Stripe webhook signature"""
+        try:
+            stripe.Webhook.construct_event(payload, sig_header, self.webhook_secret)
+            return True
+        except ValueError:
+            return False
+        except stripe.error.SignatureVerificationError:
+            return False
+
+    def handle_webhook_event(self, db: Session, event: Dict[str, Any]) -> bool:
+        """Handle Stripe webhook events"""
+        if event["type"] == "payment_intent.succeeded":
+            payment_intent = event["data"]["object"]
+            self.update_payment_status(db, payment_intent["id"], "succeeded")
+
+            # Mark webhook as processed
+            payment = (
+                db.query(Payment)
+                .filter(Payment.stripe_payment_intent_id == payment_intent["id"])
+                .first()
+            )
+            if payment:
+                payment.is_webhook_processed = True
+                db.commit()
+            return True
+
+        elif event["type"] == "payment_intent.payment_failed":
+            payment_intent = event["data"]["object"]
+            self.update_payment_status(db, payment_intent["id"], "failed")
+            return True
+
+        return False

main.py

@@ -0,0 +1,47 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api.payments import router as payments_router
+from app.db.base import engine, Base
+
+# Create database tables
+Base.metadata.create_all(bind=engine)
+
+app = FastAPI(
+    title="Stripe Payment Integration Service",
+    description="A FastAPI service for handling Stripe payments",
+    version="1.0.0",
+)
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Include routers
+app.include_router(payments_router, prefix="/api/v1")
+
+
+@app.get("/")
+async def root():
+    """Base endpoint with service information"""
+    return {
+        "title": "Stripe Payment Integration Service",
+        "description": "A FastAPI service for handling Stripe payments",
+        "version": "1.0.0",
+        "documentation": "/docs",
+        "health_check": "/health",
+    }
+
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "healthy",
+        "service": "stripe-payment-integration-service",
+        "version": "1.0.0",
+    }

openapi.json

@@ -0,0 +1,163 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "Stripe Payment Integration Service",
+    "description": "A FastAPI service for handling Stripe payments",
+    "version": "1.0.0"
+  },
+  "paths": {
+    "/": {
+      "get": {
+        "summary": "Root",
+        "operationId": "root__get",
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          }
+        }
+      }
+    },
+    "/health": {
+      "get": {
+        "summary": "Health Check",
+        "operationId": "health_check_health_get",
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/v1/payments/create-payment-intent": {
+      "post": {
+        "tags": ["payments"],
+        "summary": "Create Payment Intent",
+        "operationId": "create_payment_intent_api_v1_payments_create_payment_intent_post",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/CreatePaymentIntentRequest"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PaymentIntentResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "CreatePaymentIntentRequest": {
+        "properties": {
+          "amount": {
+            "type": "integer",
+            "title": "Amount"
+          },
+          "currency": {
+            "type": "string",
+            "title": "Currency",
+            "default": "usd"
+          },
+          "customer_email": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "email"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Customer Email"
+          },
+          "customer_name": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Customer Name"
+          },
+          "description": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Description"
+          },
+          "metadata": {
+            "anyOf": [
+              {
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Metadata"
+          }
+        },
+        "type": "object",
+        "required": ["amount"],
+        "title": "CreatePaymentIntentRequest"
+      },
+      "PaymentIntentResponse": {
+        "properties": {
+          "client_secret": {
+            "type": "string",
+            "title": "Client Secret"
+          },
+          "payment_intent_id": {
+            "type": "string",
+            "title": "Payment Intent Id"
+          },
+          "amount": {
+            "type": "integer",
+            "title": "Amount"
+          },
+          "currency": {
+            "type": "string",
+            "title": "Currency"
+          },
+          "status": {
+            "type": "string",
+            "title": "Status"
+          }
+        },
+        "type": "object",
+        "required": ["client_secret", "payment_intent_id", "amount", "currency", "status"],
+        "title": "PaymentIntentResponse"
+      }
+    }
+  }
+}

requirements.txt

@@ -0,0 +1,10 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+stripe==7.8.0
+sqlalchemy==2.0.23
+alembic==1.13.1
+python-multipart==0.0.6
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+python-dotenv==1.0.0
+ruff==0.1.7