module.exports = {
  up: async (queryInterface, Sequelize) => {
    let tableName, constraintName;

    tableName = 'collection_users';
    constraintName = 'collection_users_collectionId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"
        add constraint "${constraintName}" foreign key("collectionId") references "collections" ("id")
        on delete cascade`
    );

    constraintName = 'collection_users_userId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"\
        add constraint "${constraintName}" foreign key("userId") references "users" ("id")
        on delete cascade`
    );

    tableName = 'group_users';
    constraintName = 'group_users_groupId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"
        add constraint "${constraintName}" foreign key("groupId") references "groups" ("id")
        on delete cascade`
    );

    constraintName = 'group_users_userId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"
        add constraint "${constraintName}" foreign key("userId") references "users" ("id")
        on delete cascade`
    );
  },

  down: async (queryInterface, Sequelize) => {
    let tableName, constraintName;

    tableName = 'collection_users';
    constraintName = 'collection_users_collectionId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"\
        add constraint "${constraintName}" foreign key("collectionId") references "collections" ("id")
        on delete no action`
    );

    constraintName = 'collection_users_userId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"\
        add constraint "${constraintName}" foreign key("userId") references "users" ("id")
        on delete no action`
    );

    tableName = 'group_users';
    constraintName = 'group_users_groupId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"
        add constraint "${constraintName}" foreign key("groupId") references "groups" ("id")
        on delete no action`
    );

    constraintName = 'group_users_userId_fkey';
    await queryInterface.sequelize.query(`alter table "${tableName}" drop constraint "${constraintName}"`)
    await queryInterface.sequelize.query(
      `alter table "${tableName}"
        add constraint "${constraintName}" foreign key("userId") references "users" ("id")
        on delete no action`
    );
  },
};