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collection.go
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collection.go
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package shopify
import (
"context"
"fmt"
"github.com/r0busta/go-shopify-graphql-model/v3/graph/model"
log "github.com/sirupsen/logrus"
)
//go:generate mockgen -destination=./mock/collection_service.go -package=mock . CollectionService
type CollectionService interface {
ListAll(ctx context.Context) ([]model.Collection, error)
Get(ctx context.Context, id string) (*model.Collection, error)
Create(ctx context.Context, collection model.CollectionInput) (*string, error)
CreateBulk(ctx context.Context, collections []model.CollectionInput) error
Update(ctx context.Context, collection model.CollectionInput) error
}
type CollectionServiceOp struct {
client *Client
}
var _ CollectionService = &CollectionServiceOp{}
type mutationCollectionCreate struct {
CollectionCreateResult struct {
Collection *struct {
ID string `json:"id,omitempty"`
} `json:"collection,omitempty"`
UserErrors []model.UserError `json:"userErrors,omitempty"`
} `graphql:"collectionCreate(input: $input)" json:"collectionCreate"`
}
type mutationCollectionUpdate struct {
CollectionCreateResult struct {
UserErrors []model.UserError `json:"userErrors,omitempty"`
} `graphql:"collectionUpdate(input: $input)" json:"collectionUpdate"`
}
var collectionQuery = `
id
handle
title
products(first:250, after: $cursor){
edges{
node{
id
}
cursor
}
pageInfo{
hasNextPage
}
}
`
var collectionBulkQuery = `
id
handle
title
`
func (s *CollectionServiceOp) ListAll(ctx context.Context) ([]model.Collection, error) {
q := fmt.Sprintf(`
{
collections{
edges{
node{
%s
}
}
}
}
`, collectionBulkQuery)
res := []model.Collection{}
err := s.client.BulkOperation.BulkQuery(ctx, q, &res)
if err != nil {
return nil, fmt.Errorf("bulk query: %w", err)
}
return res, nil
}
func (s *CollectionServiceOp) Get(ctx context.Context, id string) (*model.Collection, error) {
out, err := s.getPage(ctx, id, "")
if err != nil {
return nil, err
}
nextPageData := out
hasNextPage := out.Products.PageInfo.HasNextPage
for hasNextPage && len(nextPageData.Products.Edges) > 0 {
cursor := nextPageData.Products.Edges[len(nextPageData.Products.Edges)-1].Cursor
nextPageData, err := s.getPage(ctx, id, cursor)
if err != nil {
return nil, err
}
out.Products.Edges = append(out.Products.Edges, nextPageData.Products.Edges...)
hasNextPage = nextPageData.Products.PageInfo.HasNextPage
}
return out, nil
}
func (s *CollectionServiceOp) getPage(ctx context.Context, id string, cursor string) (*model.Collection, error) {
q := fmt.Sprintf(`
query collection($id: ID!, $cursor: String) {
collection(id: $id){
%s
}
}
`, collectionQuery)
vars := map[string]interface{}{
"id": id,
}
if cursor != "" {
vars["cursor"] = cursor
}
out := struct {
Collection *model.Collection `json:"collection"`
}{}
err := s.client.gql.QueryString(ctx, q, vars, &out)
if err != nil {
return nil, fmt.Errorf("query: %w", err)
}
return out.Collection, nil
}
func (s *CollectionServiceOp) CreateBulk(ctx context.Context, collections []model.CollectionInput) error {
for _, c := range collections {
_, err := s.client.Collection.Create(ctx, c)
if err != nil {
log.Warnf("Couldn't create collection (%v): %s", c, err)
}
}
return nil
}
func (s *CollectionServiceOp) Create(ctx context.Context, collection model.CollectionInput) (*string, error) {
m := mutationCollectionCreate{}
vars := map[string]interface{}{
"input": collection,
}
err := s.client.gql.Mutate(ctx, &m, vars)
if err != nil {
return nil, fmt.Errorf("mutation: %w", err)
}
if len(m.CollectionCreateResult.UserErrors) > 0 {
return nil, fmt.Errorf("%+v", m.CollectionCreateResult.UserErrors)
}
return &m.CollectionCreateResult.Collection.ID, nil
}
func (s *CollectionServiceOp) Update(ctx context.Context, collection model.CollectionInput) error {
m := mutationCollectionUpdate{}
vars := map[string]interface{}{
"input": collection,
}
err := s.client.gql.Mutate(ctx, &m, vars)
if err != nil {
return fmt.Errorf("mutation: %w", err)
}
if len(m.CollectionCreateResult.UserErrors) > 0 {
return fmt.Errorf("%+v", m.CollectionCreateResult.UserErrors)
}
return nil
}