/**
 * Adds the cross-reference foreign keys between Quotes, Client
 * Registrations and Contracts that were deliberately left as plain
 * nullable UUIDs when each table was created in parallel (see the header
 * comments in 1788445280742_quotes.cjs, 1788447739229_client-registrations.cjs
 * and 1788447802216_contracts.cjs). All three tables now exist on `main`,
 * so this closes that gap.
 *
 * ON DELETE RESTRICT everywhere: none of these aggregates has a DELETE
 * route today (quotes/client_registrations/contracts are only ever
 * status-transitioned, never removed), and a business document silently
 * losing its link to another business document on an unrelated delete
 * would be a worse failure mode than the delete itself being blocked.
 */

exports.up = (pgm) => {
  pgm.addConstraint("quotes", "fk_quotes_client_registration", {
    foreignKeys: {
      columns: "client_registration_id",
      references: "client_registrations(id)",
      onDelete: "RESTRICT",
    },
  });

  pgm.addConstraint("client_registrations", "fk_client_registrations_quote", {
    foreignKeys: {
      columns: "quote_id",
      references: "quotes(id)",
      onDelete: "RESTRICT",
    },
  });

  pgm.addConstraint("contracts", "fk_contracts_quote", {
    foreignKeys: {
      columns: "quote_id",
      references: "quotes(id)",
      onDelete: "RESTRICT",
    },
  });

  pgm.addConstraint("contracts", "fk_contracts_client_registration", {
    foreignKeys: {
      columns: "client_registration_id",
      references: "client_registrations(id)",
      onDelete: "RESTRICT",
    },
  });
};

exports.down = (pgm) => {
  pgm.dropConstraint("contracts", "fk_contracts_client_registration");
  pgm.dropConstraint("contracts", "fk_contracts_quote");
  pgm.dropConstraint("client_registrations", "fk_client_registrations_quote");
  pgm.dropConstraint("quotes", "fk_quotes_client_registration");
};