初始化

API/internal/provider/common.go

@@ -0,0 +1,29 @@
+package provider
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type SubmitResult struct {
+	TaskID string
+	URL    string
+	Raw    json.RawMessage
+}
+
+type PollResult struct {
+	Status string
+	URL    string
+	Error  string
+	Raw    json.RawMessage
+}
+
+type HTTPError struct {
+	StatusCode int
+	Body       string
+	RetryAfter string
+}
+
+func (e *HTTPError) Error() string {
+	return fmt.Sprintf("中转站返回 HTTP %d: %s", e.StatusCode, e.Body)
+}