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subscription_gateway.go
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subscription_gateway.go
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package braintree
import (
"context"
"encoding/xml"
"fmt"
)
type SubscriptionGateway struct {
*Braintree
}
func (g *SubscriptionGateway) Create(ctx context.Context, sub *SubscriptionRequest) (*Subscription, error) {
resp, err := g.execute(ctx, "POST", "subscriptions", sub)
if err != nil {
return nil, err
}
switch resp.StatusCode {
case 201:
return resp.subscription()
}
return nil, &invalidResponseError{resp}
}
func (g *SubscriptionGateway) Update(ctx context.Context, subId string, sub *SubscriptionRequest) (*Subscription, error) {
resp, err := g.execute(ctx, "PUT", "subscriptions/"+subId, sub)
if err != nil {
return nil, err
}
switch resp.StatusCode {
case 200:
return resp.subscription()
}
return nil, &invalidResponseError{resp}
}
func (g *SubscriptionGateway) Find(ctx context.Context, subId string) (*Subscription, error) {
resp, err := g.execute(ctx, "GET", "subscriptions/"+subId, nil)
if err != nil {
return nil, err
}
switch resp.StatusCode {
case 200:
return resp.subscription()
}
return nil, &invalidResponseError{resp}
}
func (g *SubscriptionGateway) Cancel(ctx context.Context, subId string) (*Subscription, error) {
resp, err := g.execute(ctx, "PUT", "subscriptions/"+subId+"/cancel", nil)
if err != nil {
return nil, err
}
switch resp.StatusCode {
case 200:
return resp.subscription()
}
return nil, &invalidResponseError{resp}
}
// RetryCharge retries to charge for a Subscription. All options,
// including the Subscription ID, are to be provided by the
// SubscriptionTransactionRequest passed as an argument. Note that the
// Amount has to be > 0.
func (g *SubscriptionGateway) RetryCharge(ctx context.Context, txReq *SubscriptionTransactionRequest) error {
resp, err := g.execute(ctx, "POST", "transactions", txReq)
if err != nil {
return err
}
switch resp.StatusCode {
case 201:
return nil
}
return &invalidResponseError{resp}
}
// SearchIDs finds subscriptions matching the search query, returning the IDs
// only. Use SearchPage to get pages of subscriptions.
func (g *SubscriptionGateway) SearchIDs(ctx context.Context, query *SearchQuery) (*SearchResult, error) {
resp, err := g.execute(ctx, "POST", "subscriptions/advanced_search_ids", query)
if err != nil {
return nil, err
}
var searchResult struct {
PageSize int `xml:"page-size"`
Ids struct {
Item []string `xml:"item"`
} `xml:"ids"`
}
err = xml.Unmarshal(resp.Body, &searchResult)
if err != nil {
return nil, err
}
return &SearchResult{
PageSize: searchResult.PageSize,
PageCount: (len(searchResult.Ids.Item) + searchResult.PageSize - 1) / searchResult.PageSize,
IDs: searchResult.Ids.Item,
}, nil
}
// SearchPage gets the page of subscriptions matching the search query.
// Use SearchIDs to start a search and get a list of IDs, and use its result
// object to get pages.
// Page numbers start at 1.
// Returns a nil result and nil error when no more results are available.
func (g *SubscriptionGateway) SearchPage(ctx context.Context, query *SearchQuery, searchResult *SearchResult, page int) (*SubscriptionSearchResult, error) {
if page < 1 || page > searchResult.PageCount {
return nil, fmt.Errorf("page %d out of bounds, page numbers start at 1 and page count is %d", page, searchResult.PageCount)
}
startOffset := (page - 1) * searchResult.PageSize
endOffset := startOffset + searchResult.PageSize
if endOffset > len(searchResult.IDs) {
endOffset = len(searchResult.IDs)
}
pageQuery := query.shallowCopy()
pageQuery.AddMultiField("ids").Items = searchResult.IDs[startOffset:endOffset]
subscriptions, err := g.fetchSubscriptions(ctx, pageQuery)
pageResult := &SubscriptionSearchResult{
TotalItems: len(searchResult.IDs),
TotalIDs: searchResult.IDs,
CurrentPageNumber: page,
PageSize: searchResult.PageSize,
Subscriptions: subscriptions,
}
return pageResult, err
}
// Search finds subscriptions matching the search query, returning the first
// page of results. Use SearchNext to get subsequent pages.
//
// Deprecated: Use SearchIDs and SearchPage.
func (g *SubscriptionGateway) Search(ctx context.Context, query *SearchQuery) (*SubscriptionSearchResult, error) {
searchResult, err := g.SearchIDs(ctx, query)
if err != nil {
return nil, err
}
pageSize := searchResult.PageSize
ids := searchResult.IDs
endOffset := pageSize
if endOffset > len(ids) {
endOffset = len(ids)
}
firstPageQuery := query.shallowCopy()
firstPageQuery.AddMultiField("ids").Items = ids[:endOffset]
firstPageSubscriptions, err := g.fetchSubscriptions(ctx, firstPageQuery)
firstPageResult := &SubscriptionSearchResult{
TotalItems: len(ids),
TotalIDs: ids,
CurrentPageNumber: 1,
PageSize: pageSize,
Subscriptions: firstPageSubscriptions,
}
return firstPageResult, err
}
// SearchNext finds the next page of Subscriptions matching the search query.
// Use Search to start a search and get the first page of results.
// Returns a nil result and nil error when no more results are available.
//
// Deprecated: Use SearchIDs and SearchPage.
func (g *SubscriptionGateway) SearchNext(ctx context.Context, query *SearchQuery, prevResult *SubscriptionSearchResult) (*SubscriptionSearchResult, error) {
startOffset := prevResult.CurrentPageNumber * prevResult.PageSize
endOffset := startOffset + prevResult.PageSize
if endOffset > len(prevResult.TotalIDs) {
endOffset = len(prevResult.TotalIDs)
}
if startOffset >= endOffset {
return nil, nil
}
nextPageQuery := query.shallowCopy()
nextPageQuery.AddMultiField("ids").Items = prevResult.TotalIDs[startOffset:endOffset]
nextPageSubscriptions, err := g.fetchSubscriptions(ctx, nextPageQuery)
nextPageResult := &SubscriptionSearchResult{
TotalItems: prevResult.TotalItems,
TotalIDs: prevResult.TotalIDs,
CurrentPageNumber: prevResult.CurrentPageNumber + 1,
PageSize: prevResult.PageSize,
Subscriptions: nextPageSubscriptions,
}
return nextPageResult, err
}
func (g *SubscriptionGateway) fetchSubscriptions(ctx context.Context, query *SearchQuery) ([]*Subscription, error) {
resp, err := g.execute(ctx, "POST", "subscriptions/advanced_search", query)
if err != nil {
return nil, err
}
var v struct {
XMLName string `xml:"subscriptions"`
Subscriptions []*Subscription `xml:"subscription"`
}
err = xml.Unmarshal(resp.Body, &v)
if err != nil {
return nil, err
}
return v.Subscriptions, err
}