updates

Backend/alembic/versions/54e4d0db31a3_create_user_sessions_table.py

@@ -0,0 +1,92 @@
+"""create_user_sessions_table
+
+Revision ID: 54e4d0db31a3
+Revises: d709b14aa24a
+Create Date: 2025-12-06 01:12:15.123456
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+
+# revision identifiers, used by Alembic.
+revision = '54e4d0db31a3'
+down_revision = 'd709b14aa24a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Check if table exists before creating
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+    tables = inspector.get_table_names()
+    
+    if 'user_sessions' not in tables:
+        # Create user sessions table
+        op.create_table(
+            'user_sessions',
+            sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+            sa.Column('user_id', sa.Integer(), nullable=False),
+            sa.Column('session_token', sa.String(length=255), nullable=False),
+            sa.Column('refresh_token', sa.String(length=255), nullable=True),
+            sa.Column('ip_address', sa.String(length=45), nullable=True),
+            sa.Column('user_agent', sa.String(length=500), nullable=True),
+            sa.Column('device_info', sa.Text(), nullable=True),
+            sa.Column('is_active', sa.Boolean(), nullable=False, server_default='1'),
+            sa.Column('last_activity', sa.DateTime(), nullable=False, server_default=sa.text('CURRENT_TIMESTAMP')),
+            sa.Column('expires_at', sa.DateTime(), nullable=False),
+            sa.Column('created_at', sa.DateTime(), nullable=False, server_default=sa.text('CURRENT_TIMESTAMP')),
+            sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+            sa.PrimaryKeyConstraint('id')
+        )
+        
+        # Create indexes
+        op.create_index(op.f('ix_user_sessions_id'), 'user_sessions', ['id'], unique=False)
+        op.create_index(op.f('ix_user_sessions_user_id'), 'user_sessions', ['user_id'], unique=False)
+        op.create_index(op.f('ix_user_sessions_session_token'), 'user_sessions', ['session_token'], unique=True)
+        op.create_index(op.f('ix_user_sessions_refresh_token'), 'user_sessions', ['refresh_token'], unique=True)
+        op.create_index(op.f('ix_user_sessions_is_active'), 'user_sessions', ['is_active'], unique=False)
+        op.create_index(op.f('ix_user_sessions_last_activity'), 'user_sessions', ['last_activity'], unique=False)
+        op.create_index(op.f('ix_user_sessions_expires_at'), 'user_sessions', ['expires_at'], unique=False)
+
+
+def downgrade() -> None:
+    # Drop indexes
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+    tables = inspector.get_table_names()
+    
+    if 'user_sessions' in tables:
+        try:
+            op.drop_index(op.f('ix_user_sessions_expires_at'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_last_activity'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_is_active'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_refresh_token'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_session_token'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_user_id'), table_name='user_sessions')
+        except Exception:
+            pass
+        try:
+            op.drop_index(op.f('ix_user_sessions_id'), table_name='user_sessions')
+        except Exception:
+            pass
+        
+        # Drop table
+        op.drop_table('user_sessions')