Add events

backend/alembic/versions/006_add_swap_requests.py

@@ -0,0 +1,54 @@
+"""Add swap_requests table for two-sided swap confirmation
+
+Revision ID: 006_add_swap_requests
+Revises: 005_assignment_event
+Create Date: 2024-12-15
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = '006_add_swap_requests'
+down_revision: Union[str, None] = '005_add_assignment_event_type'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Create swap_requests table if it doesn't exist
+    conn = op.get_bind()
+    inspector = sa.inspect(conn)
+    tables = inspector.get_table_names()
+
+    if 'swap_requests' not in tables:
+        op.create_table(
+            'swap_requests',
+            sa.Column('id', sa.Integer(), nullable=False),
+            sa.Column('event_id', sa.Integer(), nullable=False),
+            sa.Column('from_participant_id', sa.Integer(), nullable=False),
+            sa.Column('to_participant_id', sa.Integer(), nullable=False),
+            sa.Column('from_assignment_id', sa.Integer(), nullable=False),
+            sa.Column('to_assignment_id', sa.Integer(), nullable=False),
+            sa.Column('status', sa.String(20), nullable=False, server_default='pending'),
+            sa.Column('created_at', sa.DateTime(), nullable=False, server_default=sa.func.now()),
+            sa.Column('responded_at', sa.DateTime(), nullable=True),
+            sa.PrimaryKeyConstraint('id'),
+            sa.ForeignKeyConstraint(['event_id'], ['events.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['from_participant_id'], ['participants.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['to_participant_id'], ['participants.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['from_assignment_id'], ['assignments.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['to_assignment_id'], ['assignments.id'], ondelete='CASCADE'),
+        )
+        op.create_index('ix_swap_requests_event_id', 'swap_requests', ['event_id'])
+        op.create_index('ix_swap_requests_from_participant_id', 'swap_requests', ['from_participant_id'])
+        op.create_index('ix_swap_requests_to_participant_id', 'swap_requests', ['to_participant_id'])
+
+
+def downgrade() -> None:
+    op.drop_index('ix_swap_requests_to_participant_id', table_name='swap_requests')
+    op.drop_index('ix_swap_requests_from_participant_id', table_name='swap_requests')
+    op.drop_index('ix_swap_requests_event_id', table_name='swap_requests')
+    op.drop_table('swap_requests')