fix: PascalCase JSON fields + code:200 success + Unix timestamp ExpDate

internal/provider/rainyun/client.go

@@ -114,7 +114,9 @@ func (c *client) do(ctx context.Context, method, path string, body, result any,
 
 	var apiResp apiResponse
 	if err := json.Unmarshal(respBody, &apiResp); err == nil {
-		if resp.StatusCode >= 400 || apiResp.Code != 0 {
+		// Rainyun uses code:200 and code:0 both as success indicators
+		isError := resp.StatusCode >= 400 || (apiResp.Code != 0 && apiResp.Code != 200)
+		if isError {
 			return &APIError{
 				StatusCode: resp.StatusCode,
 				Method:     method,

internal/provider/rainyun/listdata.go

@@ -13,9 +13,8 @@ func listOptions() map[string]string {
 }
 
 // listResponse is the JSON envelope returned by Rainyun list endpoints.
-// The API wraps data in {"code":0,"data":{"records":[...],"totalRecords":N}}.
-// Our client extracts apiResp.Data ({"records":[...]}), then we unmarshal into this.
+// API uses PascalCase: {"code":200,"data":{"Records":[...],"TotalRecords":N}}
 type listResponse struct {
-	Records      []any `json:"records"`
-	TotalRecords int   `json:"totalRecords"`
+	Records      []any `json:"Records"`
+	TotalRecords int   `json:"TotalRecords"`
 }

internal/provider/rainyun/server.go

@@ -13,9 +13,9 @@ type ServerService struct {
 	client *client
 }
 
-// rainyunServer mirrors the Rainyun RCS API JSON fields.
+// rainyunServer mirrors the Rainyun RCS API JSON fields (PascalCase).
 type rainyunServer struct {
-	ID         int    `json:"id"`
+	ID         int    `json:"ID"`
 	Name       string `json:"name"`
 	Status     string `json:"status"`
 	IP         string `json:"ip"`
@@ -24,7 +24,7 @@ type rainyunServer struct {
 	Disk       int    `json:"disk"`
 	OS         string `json:"os"`
 	Region     string `json:"zone_name"`
-	ExpireDate string `json:"expire_date"`
+	ExpireDate int64  `json:"ExpDate"` // Unix timestamp
 }
 
 func (s *ServerService) List(ctx context.Context) ([]provider.Server, error) {
@@ -87,7 +87,7 @@ func (s *ServerService) Upgrade(ctx context.Context, id, plan string) error {
 
 // toServer maps a rainyunServer to the provider.Server model.
 func toServer(r rainyunServer) provider.Server {
-	expire, _ := time.Parse("2006-01-02", r.ExpireDate)
+	expire := time.Unix(r.ExpireDate, 0)
 	return provider.Server{
 		ID:       fmt.Sprintf("%d", r.ID),
 		Name:     r.Name,

internal/provider/rainyun/server_test.go

@@ -16,9 +16,9 @@ func TestServerList(t *testing.T) {
 		resp := map[string]any{
 			"code": 0,
 			"data": map[string]any{
-				"records": []map[string]any{
+				"Records": []map[string]any{
 					{
-						"id":          12001,
+						"ID":          12001,
 						"name":        "web-server",
 						"status":      "running",
 						"ip":          "1.2.3.4",
@@ -26,10 +26,10 @@ func TestServerList(t *testing.T) {
 						"memory":      4096,
 						"disk":        50,
 						"os":          "Ubuntu 22.04",
-						"expire_date": "2026-08-15",
+						"ExpDate":     1756656000,
 					},
 				},
-				"totalRecords": 1,
+				"TotalRecords": 1,
 			},
 		}
 		json.NewEncoder(w).Encode(resp)