feat: add SQLAlchemy models and database setup

backend/app/database.py

@@ -0,0 +1,31 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import DeclarativeBase, sessionmaker
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    database_url: str
+    jwt_secret_key: str
+    jwt_algorithm: str = "HS256"
+    jwt_expire_minutes: int = 60
+
+    class Config:
+        env_file = ".env"
+
+
+settings = Settings()
+
+engine = create_engine(settings.database_url)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

backend/app/models.py

@@ -0,0 +1,114 @@
+from datetime import datetime
+from sqlalchemy import (
+    Boolean, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, func
+)
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    username: Mapped[str] = mapped_column(String(64), unique=True, nullable=False)
+    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False)
+    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    configs: Mapped[list["Config"]] = relationship("Config", back_populates="owner")
+
+
+class Config(Base):
+    __tablename__ = "configs"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    name: Mapped[str] = mapped_column(String(128), nullable=False)
+    description: Mapped[str] = mapped_column(Text, default="")
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
+    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now())
+    owner_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+
+    owner: Mapped["User"] = relationship("User", back_populates="configs")
+    zones: Mapped[list["Zone"]] = relationship("Zone", back_populates="config", cascade="all, delete-orphan")
+    interfaces: Mapped[list["Interface"]] = relationship("Interface", back_populates="config", cascade="all, delete-orphan")
+    policies: Mapped[list["Policy"]] = relationship("Policy", back_populates="config", cascade="all, delete-orphan", order_by="Policy.position")
+    rules: Mapped[list["Rule"]] = relationship("Rule", back_populates="config", cascade="all, delete-orphan", order_by="Rule.position")
+    masq_entries: Mapped[list["Masq"]] = relationship("Masq", back_populates="config", cascade="all, delete-orphan")
+
+
+class Zone(Base):
+    __tablename__ = "zones"
+    __table_args__ = (UniqueConstraint("config_id", "name", name="uq_zone_name_per_config"),)
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
+    name: Mapped[str] = mapped_column(String(32), nullable=False)
+    type: Mapped[str] = mapped_column(String(16), nullable=False)
+    options: Mapped[str] = mapped_column(Text, default="")
+
+    config: Mapped["Config"] = relationship("Config", back_populates="zones")
+    interfaces: Mapped[list["Interface"]] = relationship("Interface", back_populates="zone")
+
+
+class Interface(Base):
+    __tablename__ = "interfaces"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
+    name: Mapped[str] = mapped_column(String(32), nullable=False)
+    zone_id: Mapped[int] = mapped_column(Integer, ForeignKey("zones.id"), nullable=False)
+    options: Mapped[str] = mapped_column(Text, default="")
+
+    config: Mapped["Config"] = relationship("Config", back_populates="interfaces")
+    zone: Mapped["Zone"] = relationship("Zone", back_populates="interfaces")
+
+
+class Policy(Base):
+    __tablename__ = "policies"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
+    src_zone_id: Mapped[int] = mapped_column(Integer, ForeignKey("zones.id"), nullable=False)
+    dst_zone_id: Mapped[int] = mapped_column(Integer, ForeignKey("zones.id"), nullable=False)
+    policy: Mapped[str] = mapped_column(String(16), nullable=False)
+    log_level: Mapped[str] = mapped_column(String(16), default="")
+    comment: Mapped[str] = mapped_column(Text, default="")
+    position: Mapped[int] = mapped_column(Integer, default=0)
+
+    config: Mapped["Config"] = relationship("Config", back_populates="policies")
+    src_zone: Mapped["Zone"] = relationship("Zone", foreign_keys=[src_zone_id])
+    dst_zone: Mapped["Zone"] = relationship("Zone", foreign_keys=[dst_zone_id])
+
+
+class Rule(Base):
+    __tablename__ = "rules"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
+    action: Mapped[str] = mapped_column(String(32), nullable=False)
+    src_zone_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("zones.id"), nullable=True)
+    dst_zone_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("zones.id"), nullable=True)
+    src_ip: Mapped[str] = mapped_column(String(64), default="")
+    dst_ip: Mapped[str] = mapped_column(String(64), default="")
+    proto: Mapped[str] = mapped_column(String(16), default="")
+    dport: Mapped[str] = mapped_column(String(64), default="")
+    sport: Mapped[str] = mapped_column(String(64), default="")
+    comment: Mapped[str] = mapped_column(Text, default="")
+    position: Mapped[int] = mapped_column(Integer, default=0)
+
+    config: Mapped["Config"] = relationship("Config", back_populates="rules")
+    src_zone: Mapped["Zone | None"] = relationship("Zone", foreign_keys=[src_zone_id])
+    dst_zone: Mapped["Zone | None"] = relationship("Zone", foreign_keys=[dst_zone_id])
+
+
+class Masq(Base):
+    __tablename__ = "masq"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
+    source_network: Mapped[str] = mapped_column(String(64), nullable=False)
+    out_interface: Mapped[str] = mapped_column(String(32), nullable=False)
+    to_address: Mapped[str] = mapped_column(String(64), default="")
+    comment: Mapped[str] = mapped_column(Text, default="")
+
+    config: Mapped["Config"] = relationship("Config", back_populates="masq_entries")