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resolver.go
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resolver.go
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package graphql
import (
"context"
"github.com/lizhefeng/avocado-backend/keystore"
"github.com/lizhefeng/avocado-backend/protocol"
"github.com/lizhefeng/avocado-backend/protocol/albums"
"github.com/pkg/errors"
) // THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.
// Resolver is the resolver that handles graphql request
type Resolver struct {
KeyStore *keystore.KeyStore
}
// Mutation returns a query resolver
func (r *Resolver) Mutation() MutationResolver {
return &mutationResolver{r}
}
// Query returns a query resolver
func (r *Resolver) Query() QueryResolver {
return &queryResolver{r}
}
type mutationResolver struct{ *Resolver }
// CreateReview creates a review
func (r *mutationResolver) CreateReview(ctx context.Context, review *ReviewInput) (*Review, error) {
reviewInput := &protocol.ReviewInput{
UserID: uint64(review.UserID),
ArtID: uint64(review.ArtID),
Text: review.Text,
TimeStamp: uint64(review.Timestamp),
Upvotes: uint64(review.Upvotes),
}
rev, err := r.KeyStore.PutReview(ctx, albums.ProtocolID, reviewInput)
if err != nil {
return nil, errors.Wrap(err, "failed to store review in the underlying db")
}
return &Review{
ReviewID: int(rev.ReviewID),
UserID: int(rev.UserID),
ArtID: int(rev.ArtID),
Text: rev.Text,
Timestamp: int(rev.TimeStamp),
Upvotes: int(rev.Upvotes),
}, nil
}
type queryResolver struct{ *Resolver }
// Review returns a review
func (r *queryResolver) Review(ctx context.Context, id int) (*Review, error) {
rev, err := r.KeyStore.GetReview(albums.ProtocolID, uint64(id))
if err != nil {
return nil, errors.Wrap(err, "failed to load review from the underlying db")
}
return &Review{
ReviewID: int(rev.ReviewID),
UserID: int(rev.UserID),
ArtID: int(rev.ArtID),
Text: rev.Text,
Timestamp: int(rev.TimeStamp),
Upvotes: int(rev.Upvotes),
}, nil
}