July 7 - Implement notification per contract

migrations/versions/phase33_contract_notify_recipients.py

@@ -0,0 +1,52 @@
+"""phase33 — contract_notification_recipients table
+
+Per-contract additional notification recipients (users or free-form emails)
+with a per-recipient event_types subscription list. Notified in addition to
+the global NotificationMatrix routing, scoped to the contract's facilities.
+
+Uses INFORMATION_SCHEMA table-existence check — safe to re-run.
+"""
+
+revision      = 'phase33_contract_notify_recipients'
+down_revision = 'phase32_device_token_columns'
+branch_labels = None
+depends_on    = None
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def _table_exists(conn, table):
+    result = conn.execute(sa.text(
+        "SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES "
+        "WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = :t"
+    ), {"t": table})
+    return result.scalar() > 0
+
+
+def upgrade():
+    bind = op.get_bind()
+    if _table_exists(bind, 'contract_notification_recipients'):
+        return
+
+    op.create_table(
+        'contract_notification_recipients',
+        sa.Column('id', sa.Integer, primary_key=True),
+        sa.Column('project_id', sa.Integer,
+                  sa.ForeignKey('projects.id', ondelete='CASCADE'), nullable=False),
+        sa.Column('user_id', sa.Integer,
+                  sa.ForeignKey('users.id', ondelete='CASCADE'), nullable=True),
+        sa.Column('email', sa.String(200), nullable=True),
+        sa.Column('event_types', sa.Text, nullable=True),
+        sa.Column('created_at', sa.DateTime, nullable=False),
+    )
+    op.create_index('ix_cnr_project_id',
+                    'contract_notification_recipients', ['project_id'])
+    op.create_index('ix_cnr_user_id',
+                    'contract_notification_recipients', ['user_id'])
+
+
+def downgrade():
+    bind = op.get_bind()
+    if _table_exists(bind, 'contract_notification_recipients'):
+        op.drop_table('contract_notification_recipients')