- fixed dada callback sign error.

platform/dadaapi/dadaapi.go

@@ -56,6 +56,11 @@ type DadaCity struct {
 	CityCode string `json:"cityCode"`
 }
 
+type CancelReason struct {
+	Id     int    `json:"id"`
+	Reason string `json:"reason"`
+}
+
 func NewDadaAPI(appKey, appSecret, sourceId, callbackURL string, isProd bool) *DadaAPI {
 	api := &DadaAPI{
 		appKey:      appKey,
@@ -75,15 +80,15 @@ func NewDadaAPI(appKey, appSecret, sourceId, callbackURL string, isProd bool) *D
 func (d *DadaAPI) signParams(mapData map[string]interface{}) string {
 	keys := make([]string, 0)
 	for k := range mapData {
-		keys = append(keys, k)
+		if k != signKey {
+			keys = append(keys, k)
+		}
 	}
 	sort.Strings(keys)
 
 	finalStr := d.appSecret
 	for _, k := range keys {
-		if k != signKey {
-			finalStr += k + fmt.Sprint(mapData[k])
-		}
+		finalStr += k + fmt.Sprint(mapData[k])
 	}
 
 	finalStr += d.appSecret
@@ -162,3 +167,21 @@ func (d *DadaAPI) GetCities() (retVal []DadaCity, err error) {
 	}
 	return retVal, nil
 }
+
+func (d *DadaAPI) GetCancelReasons() (retVal []CancelReason, err error) {
+	result, err := d.AccessDada("api/order/cancel/reasons", nil)
+	if err != nil {
+		return nil, err
+	}
+
+	cites := result.Result.([]interface{})
+	for _, v := range cites {
+		v2 := v.(map[string]interface{})
+		reason := CancelReason{
+			Id:     int(utils.MustInterface2Int64(v2["id"])),
+			Reason: v2["reason"].(string),
+		}
+		retVal = append(retVal, reason)
+	}
+	return retVal, nil
+}