first commit

backend/app/models/backup.py

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+from sqlalchemy import Column, DateTime, ForeignKey, Integer, String
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class Backup(Base):
+    __tablename__ = "backups"
+
+    id = Column(Integer, primary_key=True, index=True)
+    router_id = Column(Integer, ForeignKey("routers.id"), nullable=False, index=True)
+    file_path = Column(String(500), nullable=False)
+    file_name = Column(String(255), nullable=False)
+    backup_type = Column(String(50), nullable=False, default="export")
+    checksum = Column(String(64), nullable=True)
+    created_at = Column(DateTime, server_default=func.now(), nullable=False)
+
+    router = relationship("Router", back_populates="backups")

backend/app/models/log.py

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+from sqlalchemy import Column, DateTime, Integer, Text
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class OperationLog(Base):
+    __tablename__ = "operation_logs"
+
+    id = Column(Integer, primary_key=True, index=True)
+    message = Column(Text, nullable=False)
+    timestamp = Column(DateTime, server_default=func.now(), nullable=False)

backend/app/models/router.py

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+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class Router(Base):
+    __tablename__ = "routers"
+
+    id = Column(Integer, primary_key=True, index=True)
+    owner_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
+    name = Column(String(120), nullable=False)
+    device_type = Column(String(32), nullable=False, default="routeros")
+    host = Column(String(255), nullable=False)
+    port = Column(Integer, nullable=False, default=22)
+    ssh_user = Column(String(120), nullable=False, default="admin")
+    ssh_key = Column(Text, nullable=True)
+    ssh_password = Column(String(255), nullable=True)
+    last_connection_status = Column(Boolean, nullable=True)
+    last_connection_tested_at = Column(DateTime, nullable=True)
+    last_connection_error = Column(Text, nullable=True)
+    last_connection_hostname = Column(String(255), nullable=True)
+    last_connection_model = Column(String(255), nullable=True)
+    last_connection_version = Column(String(255), nullable=True)
+    last_connection_uptime = Column(String(255), nullable=True)
+    last_connection_transport = Column(String(32), nullable=True)
+    last_connection_server = Column(String(255), nullable=True)
+    last_connection_auth_mode = Column(String(64), nullable=True)
+    last_connection_http_status = Column(String(32), nullable=True)
+    last_connection_backup_available = Column(Boolean, nullable=True)
+    created_at = Column(DateTime, server_default=func.now(), nullable=False)
+
+    backups = relationship("Backup", back_populates="router", cascade="all, delete-orphan")

backend/app/models/settings.py

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+from sqlalchemy import Boolean, Column, Integer, String, Text
+
+from app.db.session import Base
+
+
+class GlobalSettings(Base):
+    __tablename__ = "global_settings"
+
+    id = Column(Integer, primary_key=True)
+    backup_retention_days = Column(Integer, default=7)
+    log_retention_days = Column(Integer, default=7)
+    export_cron = Column(String(64), default="")
+    binary_cron = Column(String(64), default="")
+    retention_cron = Column(String(64), default="")
+    enable_auto_export = Column(Boolean, default=False)
+    connection_test_interval_minutes = Column(Integer, default=0)
+    global_ssh_key = Column(Text, nullable=True)
+    default_switchos_username = Column(String(120), nullable=True)
+    default_switchos_password = Column(String(255), nullable=True)
+    pushover_token = Column(String(255), nullable=True)
+    pushover_userkey = Column(String(255), nullable=True)
+    notify_failures_only = Column(Boolean, default=True)
+    smtp_host = Column(String(255), nullable=True)
+    smtp_port = Column(Integer, default=587)
+    smtp_login = Column(String(255), nullable=True)
+    smtp_password = Column(String(255), nullable=True)
+    smtp_notifications_enabled = Column(Boolean, default=False)
+    recipient_email = Column(String(255), nullable=True)

backend/app/models/user.py

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+from sqlalchemy import Column, DateTime, Integer, String
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(120), unique=True, nullable=False, index=True)
+    password_hash = Column(String(255), nullable=False)
+    created_at = Column(DateTime, server_default=func.now(), nullable=False)
+    preferred_language = Column(String(8), nullable=False, default='pl')
+    preferred_font = Column(String(32), nullable=False, default='default')