Complete backend infrastructure and authentication system

Co-authored-by: mblanke <9078342+mblanke@users.noreply.github.com>

backend/alembic/versions/f82b3092d056_initial_migration.py

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+"""Initial migration
+
+Revision ID: f82b3092d056
+Revises: 
+Create Date: 2025-12-09 14:25:47.222289
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'f82b3092d056'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # Create tenants table
+    op.create_table(
+        'tenants',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('name', sa.String(), nullable=False),
+        sa.Column('description', sa.String(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_tenants_id'), 'tenants', ['id'], unique=False)
+    op.create_index(op.f('ix_tenants_name'), 'tenants', ['name'], unique=True)
+
+    # Create users table
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('username', sa.String(), nullable=False),
+        sa.Column('password_hash', sa.String(), nullable=False),
+        sa.Column('role', sa.String(), nullable=False),
+        sa.Column('tenant_id', sa.Integer(), nullable=False),
+        sa.Column('is_active', sa.Boolean(), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    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 hosts table
+    op.create_table(
+        'hosts',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('hostname', sa.String(), nullable=False),
+        sa.Column('ip_address', sa.String(), nullable=True),
+        sa.Column('os', sa.String(), nullable=True),
+        sa.Column('tenant_id', sa.Integer(), nullable=False),
+        sa.Column('host_metadata', sa.JSON(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('last_seen', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_hosts_id'), 'hosts', ['id'], unique=False)
+    op.create_index(op.f('ix_hosts_hostname'), 'hosts', ['hostname'], unique=False)
+
+    # Create cases table
+    op.create_table(
+        'cases',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('title', sa.String(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('status', sa.String(), nullable=False),
+        sa.Column('severity', sa.String(), nullable=True),
+        sa.Column('tenant_id', sa.Integer(), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_cases_id'), 'cases', ['id'], unique=False)
+
+    # Create artifacts table
+    op.create_table(
+        'artifacts',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('artifact_type', sa.String(), nullable=False),
+        sa.Column('value', sa.String(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('case_id', sa.Integer(), nullable=True),
+        sa.Column('artifact_metadata', sa.JSON(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['case_id'], ['cases.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_artifacts_id'), 'artifacts', ['id'], unique=False)
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    op.drop_index(op.f('ix_artifacts_id'), table_name='artifacts')
+    op.drop_table('artifacts')
+    op.drop_index(op.f('ix_cases_id'), table_name='cases')
+    op.drop_table('cases')
+    op.drop_index(op.f('ix_hosts_hostname'), table_name='hosts')
+    op.drop_index(op.f('ix_hosts_id'), table_name='hosts')
+    op.drop_table('hosts')
+    op.drop_index(op.f('ix_users_username'), table_name='users')
+    op.drop_index(op.f('ix_users_id'), table_name='users')
+    op.drop_table('users')
+    op.drop_index(op.f('ix_tenants_name'), table_name='tenants')
+    op.drop_index(op.f('ix_tenants_id'), table_name='tenants')
+    op.drop_table('tenants')