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client.go
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client.go
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// Package coupon provides the /coupons APIs
package coupon
import (
"errors"
"net/url"
"strconv"
stripe "github.com/stripe/stripe-go"
)
const (
Forever stripe.CouponDuration = "forever"
Once stripe.CouponDuration = "once"
Repeating stripe.CouponDuration = "repeating"
)
// Client is used to invoke /coupons APIs.
type Client struct {
B stripe.Backend
Key string
}
// New POSTs new coupons.
// For more details see https://stripe.com/docs/api#create_coupon.
func New(params *stripe.CouponParams) (*stripe.Coupon, error) {
return getC().New(params)
}
func (c Client) New(params *stripe.CouponParams) (*stripe.Coupon, error) {
// TODO: this doesn't check that the params are not nil.
body := &url.Values{
"duration": {string(params.Duration)},
}
if len(params.ID) > 0 {
body.Add("id", params.ID)
}
if params.Percent > 0 {
body.Add("percent_off", strconv.FormatUint(params.Percent, 10))
} else if params.Amount > 0 {
body.Add("amount_off", strconv.FormatUint(params.Amount, 10))
body.Add("currency", string(params.Currency))
} else {
err := errors.New("Invalid coupon params: either amount and currency or percent need to be set")
return nil, err
}
if params.Duration == Repeating {
body.Add("duration_in_months", strconv.FormatUint(params.DurationPeriod, 10))
}
if params.Redemptions > 0 {
body.Add("max_redemptions", strconv.FormatUint(params.Redemptions, 10))
}
if params.RedeemBy > 0 {
body.Add("redeem_by", strconv.FormatInt(params.RedeemBy, 10))
}
params.AppendTo(body)
coupon := &stripe.Coupon{}
err := c.B.Call("POST", "/coupons", c.Key, body, ¶ms.Params, coupon)
return coupon, err
}
// Get returns the details of a coupon.
// For more details see https://stripe.com/docs/api#retrieve_coupon.
func Get(id string, params *stripe.CouponParams) (*stripe.Coupon, error) {
return getC().Get(id, params)
}
func (c Client) Get(id string, params *stripe.CouponParams) (*stripe.Coupon, error) {
var body *url.Values
var commonParams *stripe.Params
if params != nil {
commonParams = ¶ms.Params
body = &url.Values{}
params.AppendTo(body)
}
coupon := &stripe.Coupon{}
err := c.B.Call("GET", "/coupons/"+id, c.Key, body, commonParams, coupon)
return coupon, err
}
// Update updates a coupon's properties.
// For more details see https://stripe.com/docs/api#update_coupon.
func Update(id string, params *stripe.CouponParams) (*stripe.Coupon, error) {
return getC().Update(id, params)
}
func (c Client) Update(id string, params *stripe.CouponParams) (*stripe.Coupon, error) {
body := &url.Values{}
params.AppendTo(body)
coupon := &stripe.Coupon{}
err := c.B.Call("POST", "/coupons/"+id, c.Key, body, ¶ms.Params, coupon)
return coupon, err
}
// Del removes a coupon.
// For more details see https://stripe.com/docs/api#delete_coupon.
func Del(id string) (*stripe.Coupon, error) {
return getC().Del(id)
}
func (c Client) Del(id string) (*stripe.Coupon, error) {
coupon := &stripe.Coupon{}
err := c.B.Call("DELETE", "/coupons/"+id, c.Key, nil, nil, coupon)
return coupon, err
}
// List returns a list of coupons.
// For more details see https://stripe.com/docs/api#list_coupons.
func List(params *stripe.CouponListParams) *Iter {
return getC().List(params)
}
func (c Client) List(params *stripe.CouponListParams) *Iter {
type couponList struct {
stripe.ListMeta
Values []*stripe.Coupon `json:"data"`
}
var body *url.Values
var lp *stripe.ListParams
var p *stripe.Params
if params != nil {
body = &url.Values{}
params.AppendTo(body)
lp = ¶ms.ListParams
p = params.ToParams()
}
return &Iter{stripe.GetIter(lp, body, func(b url.Values) ([]interface{}, stripe.ListMeta, error) {
list := &couponList{}
err := c.B.Call("GET", "/coupons", c.Key, &b, p, list)
ret := make([]interface{}, len(list.Values))
for i, v := range list.Values {
ret[i] = v
}
return ret, list.ListMeta, err
})}
}
// Iter is an iterator for lists of Coupons.
// The embedded Iter carries methods with it;
// see its documentation for details.
type Iter struct {
*stripe.Iter
}
// Coupon returns the most recent Coupon
// visited by a call to Next.
func (i *Iter) Coupon() *stripe.Coupon {
return i.Current().(*stripe.Coupon)
}
func getC() Client {
return Client{stripe.GetBackend(stripe.APIBackend), stripe.Key}
}