feat: move native communication to FFI (#1457)

pkg/rest/invoke.go

@@ -0,0 +1,44 @@
+package rest
+
+import (
+	"encoding/json"
+	"net/url"
+
+	goapi "github.com/GopeedLab/gopeed/pkg/api"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+)
+
+const (
+	TaskEventDone  = uint64(goapi.TaskEventDone)
+	TaskEventError = uint64(goapi.TaskEventError)
+)
+
+// Invoke dispatches a Core API request without using an HTTP listener. It is
+// the shared entry point for Desktop FFI and gomobile bindings.
+func Invoke(method, path, rawQuery, body string) string {
+	service := APIService
+	if service == nil {
+		return marshalInvokeResult(model.NewErrorResult("service not started"))
+	}
+	query, err := url.ParseQuery(rawQuery)
+	if err != nil {
+		return marshalInvokeResult(model.NewErrorResult(err.Error()))
+	}
+	_, data := service.JSON(method, path, query, []byte(body), nil)
+	return string(data)
+}
+
+func SubscribeTaskEvents(mask uint64, listener func(payload string)) {
+	if APIService == nil {
+		return
+	}
+	APIService.SubscribeTaskEvents(goapi.TaskEventMask(mask), listener)
+}
+
+func marshalInvokeResult(value any) string {
+	data, err := json.Marshal(value)
+	if err != nil {
+		return `{"code":1000,"msg":"marshal response failed"}`
+	}
+	return string(data)
+}