Sequel.migration do

  up do
    # create projects table
    create_table(:projects) do
      primary_key :id
      String :name, null: false
      String :description
      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
    end

    # create tables for project many-to-many relationships
    create_table(:projects_hardware) do
      foreign_key(:project_id, :projects, null: false)
      foreign_key(:hardware_id, :hardware, null: false)
    end
    create_table(:projects_benchmarks) do
      foreign_key(:project_id, :projects, null: false)
      foreign_key(:benchmark_id, :benchmarks, null: false)
    end
    create_table(:projects_tests) do
      foreign_key(:project_id, :projects, null: false)
      foreign_key(:test_id, :tests, null: false)
    end
  end

  down do
    drop_table(:projects_tests)
    drop_table(:projects_benchmarks)
    drop_table(:projects_hardware)
    drop_table(:projects)
  end

end