ab87d3c506
- Built complete CEX platform with FastAPI and Python - JWT-based authentication system with secure password hashing - Multi-currency crypto wallet support (BTC, ETH, USDT) - Fiat account management (USD, EUR, GBP) - Local transaction signing without external APIs - Comprehensive transaction handling (send/receive/deposit/withdraw) - SQLAlchemy models with Alembic migrations - Security middleware (rate limiting, headers, logging) - Input validation and sanitization - Encrypted private key storage with PBKDF2 - Standardized codebase architecture with service layer pattern - Complete API documentation with health endpoints - Comprehensive README with setup instructions Features: - User registration and authentication - Crypto wallet creation and management - Secure transaction signing using local private keys - Fiat deposit/withdrawal system - Transaction history and tracking - Rate limiting and security headers - Input validation for all endpoints - Error handling and logging
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
from sqlalchemy import Column, Integer, String, Float, DateTime, ForeignKey, Text, Enum
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from sqlalchemy.sql import func
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from sqlalchemy.orm import relationship
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import enum
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from app.db.base import Base
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class TransactionStatus(enum.Enum):
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PENDING = "pending"
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CONFIRMED = "confirmed"
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FAILED = "failed"
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CANCELLED = "cancelled"
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class TransactionType(enum.Enum):
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SEND = "send"
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RECEIVE = "receive"
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DEPOSIT = "deposit"
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WITHDRAWAL = "withdrawal"
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class Transaction(Base):
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__tablename__ = "transactions"
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id = Column(Integer, primary_key=True, index=True)
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user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
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from_wallet_id = Column(Integer, ForeignKey("wallets.id"), nullable=True)
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to_wallet_id = Column(Integer, ForeignKey("wallets.id"), nullable=True)
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transaction_hash = Column(String, unique=True, nullable=True)
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amount = Column(Float, nullable=False)
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fee = Column(Float, default=0.0)
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currency = Column(String, nullable=False)
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transaction_type = Column(Enum(TransactionType), nullable=False)
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status = Column(Enum(TransactionStatus), default=TransactionStatus.PENDING)
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from_address = Column(String, nullable=True)
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to_address = Column(String, nullable=False)
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block_number = Column(Integer, nullable=True)
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confirmations = Column(Integer, default=0)
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notes = Column(Text, nullable=True)
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created_at = Column(DateTime(timezone=True), server_default=func.now())
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updated_at = Column(DateTime(timezone=True), onupdate=func.now())
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# Relationships
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user = relationship("User", back_populates="transactions")
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from_wallet = relationship("Wallet", foreign_keys=[from_wallet_id], back_populates="transactions_sent")
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to_wallet = relationship("Wallet", foreign_keys=[to_wallet_id], back_populates="transactions_received")
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class FiatTransaction(Base):
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__tablename__ = "fiat_transactions"
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id = Column(Integer, primary_key=True, index=True)
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account_id = Column(Integer, ForeignKey("fiat_accounts.id"), nullable=False)
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amount = Column(Float, nullable=False)
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currency = Column(String, nullable=False)
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transaction_type = Column(Enum(TransactionType), nullable=False)
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status = Column(Enum(TransactionStatus), default=TransactionStatus.PENDING)
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bank_reference = Column(String, nullable=True)
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payment_method = Column(String, nullable=True) # bank_transfer, card, etc.
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notes = Column(Text, nullable=True)
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created_at = Column(DateTime(timezone=True), server_default=func.now())
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updated_at = Column(DateTime(timezone=True), onupdate=func.now())
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# Relationships
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account = relationship("FiatAccount", back_populates="deposits") |