func ReplaceBuildEventsIDWithEventID(tx migration.LimitedTx) error {
	_, err := tx.Exec(`ALTER TABLE build_events ADD COLUMN event_id integer`)
	if err != nil {
		return err
	}

	startIDs := map[int]int{}

	rows, err := tx.Query(`
		SELECT build_id, min(id)
		FROM build_events
		GROUP BY build_id
	`)
	if err != nil {
		return err
	}

	for rows.Next() {
		var buildID, id int
		err := rows.Scan(&buildID, &id)
		if err != nil {
			return err
		}

		startIDs[buildID] = id
	}

	err = rows.Close()
	if err != nil {
		return err
	}

	for buildID, id := range startIDs {
		_, err := tx.Exec(`
			UPDATE build_events
			SET event_id = id - $2
			WHERE build_id = $1
		`, buildID, id)
		if err != nil {
			return err
		}
	}

	_, err = tx.Exec(`ALTER TABLE build_events DROP COLUMN id`)
	if err != nil {
		return err
	}

	_, err = tx.Exec(`ALTER TABLE build_events ALTER COLUMN event_id SET NOT NULL`)
	if err != nil {
		return err
	}

	_, err = tx.Exec(`CREATE UNIQUE INDEX build_events_build_id_event_id ON build_events (build_id, event_id)`)
	if err != nil {
		return err
	}

	return nil
}
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func AddNameToBuildInputs(tx migration.LimitedTx) error {
	_, err := tx.Exec(`ALTER TABLE build_inputs ADD COLUMN name text`)
	if err != nil {
		return err
	}

	names := map[int]string{}

	rows, err := tx.Query(`
    SELECT i.versioned_resource_id, v.resource_name
    FROM build_inputs i, versioned_resources v
    WHERE v.id = i.versioned_resource_id
  `)
	if err != nil {
		return err
	}

	defer rows.Close()

	for rows.Next() {
		var vrID int
		var name string
		err := rows.Scan(&vrID, &name)
		if err != nil {
			return err
		}

		names[vrID] = name
	}

	for vrID, name := range names {
		_, err := tx.Exec(`
      UPDATE build_inputs
      SET name = $2
      WHERE versioned_resource_id = $1
    `, vrID, name)
		if err != nil {
			return err
		}
	}

	_, err = tx.Exec(`ALTER TABLE build_inputs ALTER COLUMN name SET NOT NULL`)
	if err != nil {
		return err
	}

	return nil
}
func AddPipelineBuildEventsTables(tx migration.LimitedTx) error {

	_, err := tx.Exec(`
		ALTER TABLE build_events
		DROP CONSTRAINT build_events_build_id_fkey
	`)
	if err != nil {
		return fmt.Errorf("failed to update build events foreign key: %s", err)
	}

	rows, err := tx.Query(`SELECT id FROM pipelines`)
	if err != nil {
		return err
	}

	defer rows.Close()

	var pipelineIDs []int

	for rows.Next() {
		var pipelineID int
		err = rows.Scan(&pipelineID)
		if err != nil {
			return fmt.Errorf("failed to scan pipeline ID: %s", err)
		}

		pipelineIDs = append(pipelineIDs, pipelineID)
	}

	for _, pipelineID := range pipelineIDs {
		err = createBuildEventsTable(tx, pipelineID)
		if err != nil {
			return fmt.Errorf("failed to create build events table: %s", err)
		}

		err = populateBuildEventsTable(tx, pipelineID)
		if err != nil {
			return fmt.Errorf("failed to populate build events: %s", err)
		}
	}

	_, err = tx.Exec(`
		CREATE INDEX build_events_build_id_idx ON build_events (build_id);
		CREATE INDEX build_outputs_build_id_idx ON build_outputs (build_id);
		CREATE INDEX build_inputs_build_id_idx ON build_inputs (build_id);
		CREATE INDEX build_outputs_versioned_resource_id_idx ON build_outputs (versioned_resource_id);
		CREATE INDEX build_inputs_versioned_resource_id_idx ON build_inputs (versioned_resource_id);

		CREATE INDEX image_resource_versions_build_id_idx ON image_resource_versions (build_id);
		CREATE INDEX pipelines_team_id_idx ON pipelines (team_id);
		CREATE INDEX resources_pipeline_id_idx ON resources (pipeline_id);
		CREATE INDEX jobs_pipeline_id_idx ON jobs (pipeline_id);
		CREATE INDEX jobs_serial_groups_job_id_idx ON jobs_serial_groups (job_id);
		CREATE INDEX builds_job_id_idx ON builds (job_id);
		CREATE INDEX versioned_resources_resource_id_idx ON versioned_resources (resource_id);
	`)
	if err != nil {
		return fmt.Errorf("failed to create indexes: %s", err)
	}

	_, err = tx.Exec(`
		DELETE FROM ONLY build_events
		WHERE build_id IN (SELECT id FROM builds WHERE job_id IS NOT NULL)
	`)
	if err != nil {
		return fmt.Errorf("failed to clean up build events: %s", err)
	}

	return nil
}