FEATURE: Add types.StrInt64 for decoding integer in JSON string format

pkg/exchange/bitget/bitgetapi/get_account_request.go

@@ -3,15 +3,19 @@ package bitgetapi
 //go:generate -command GetRequest requestgen -method GET -responseType .APIResponse -responseDataField Data
 //go:generate -command PostRequest requestgen -method POST -responseType .APIResponse -responseDataField Data
 
-import "github.com/c9s/requestgen"
+import (
+	"github.com/c9s/requestgen"
+
+	"github.com/c9s/bbgo/pkg/types"
+)
 
 type Account struct {
-	UserId      string   `json:"user_id"`
-	InviterId   string   `json:"inviter_id"`
-	Ips         string   `json:"ips"`
-	Authorities []string `json:"authorities"`
-	ParentId    string   `json:"parentId"`
-	Trader      bool     `json:"trader"`
+	UserId      types.StrInt64 `json:"user_id"`
+	InviterId   types.StrInt64 `json:"inviter_id"`
+	Ips         string         `json:"ips"`
+	Authorities []string       `json:"authorities"`
+	ParentId    types.StrInt64 `json:"parentId"`
+	Trader      bool           `json:"trader"`
 }
 
 //go:generate GetRequest -url "/api/spot/v1/account/getInfo" -type GetAccountRequest -responseDataType .Account

pkg/exchange/bitget/bitgetapi/get_fills_request.go

@@ -11,10 +11,10 @@ import (
 )
 
 type Fill struct {
-	AccountId       string                     `json:"accountId"`
+	AccountId       types.StrInt64             `json:"accountId"`
 	Symbol          string                     `json:"symbol"`
-	OrderId         string                     `json:"orderId"`
-	FillId          string                     `json:"fillId"`
+	OrderId         types.StrInt64             `json:"orderId"`
+	FillId          types.StrInt64             `json:"fillId"`
 	OrderType       OrderType                  `json:"orderType"`
 	Side            OrderSide                  `json:"side"`
 	FillPrice       fixedpoint.Value           `json:"fillPrice"`

pkg/exchange/bitget/bitgetapi/get_order_detail_request.go

@@ -11,9 +11,9 @@ import (
 )
 
 type OrderDetail struct {
-	AccountId        string                     `json:"accountId"`
+	AccountId        types.StrInt64             `json:"accountId"`
 	Symbol           string                     `json:"symbol"`
-	OrderId          string                     `json:"orderId"`
+	OrderId          types.StrInt64             `json:"orderId"`
 	ClientOrderId    string                     `json:"clientOrderId"`
 	Price            fixedpoint.Value           `json:"price"`
 	Quantity         fixedpoint.Value           `json:"quantity"`

pkg/types/strint.go

@@ -0,0 +1,43 @@
+package types
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+)
+
+type StrInt64 int64
+
+func (s *StrInt64) MarshalJSON() ([]byte, error) {
+	ss := strconv.FormatInt(int64(*s), 10)
+	return json.Marshal(ss)
+}
+
+func (s *StrInt64) UnmarshalJSON(body []byte) error {
+	var arg interface{}
+	if err := json.Unmarshal(body, &arg); err != nil {
+		return err
+	}
+
+	switch ta := arg.(type) {
+	case string:
+		// parse string
+		i, err := strconv.ParseInt(ta, 10, 64)
+		if err != nil {
+			return err
+		}
+		*s = StrInt64(i)
+
+	case int64:
+		*s = StrInt64(ta)
+	case int32:
+		*s = StrInt64(ta)
+	case int:
+		*s = StrInt64(ta)
+
+	default:
+		return fmt.Errorf("StrInt64 error: unsupported value type %T", ta)
+	}
+
+	return nil
+}