package queries

import (
	"context"
	"errors"

	"git.aiterp.net/rpdata/api/models"
	"git.aiterp.net/rpdata/api/models/changes"
)

/// Queries

func (r *resolver) Changes(ctx context.Context, filter *changes.Filter) ([]models.Change, error) {
	return changes.List(filter)
}

/// Subscriptions

func (r *subscriptionResolver) Changes(ctx context.Context, keys []models.ChangeKey) (<-chan models.Change, error) {
	if len(keys) == 0 {
		return nil, errors.New("At least one key is required for a subscription")
	}

	return changes.Subscribe(ctx, keys, false), nil
}