new: Big Change, Add support for Extensions 😍

extension/interface.go

@@ -0,0 +1,45 @@
+package extension
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/hiddify/hiddify-core/common"
+)
+
+var (
+	allExtensionsMap     = make(map[string]ExtensionFactory)
+	enabledExtensionsMap = make(map[string]*Extension)
+	generalExtensionData = mustSaveExtensionData{
+		ExtensionStatusMap: make(map[string]bool),
+	}
+)
+
+type mustSaveExtensionData struct {
+	ExtensionStatusMap map[string]bool `json:"extensionStatusMap"`
+}
+
+func RegisterExtension(factory ExtensionFactory) error {
+	if _, ok := allExtensionsMap[factory.Id]; ok {
+		err := fmt.Errorf("Extension with ID %s already exists", factory.Id)
+		log.Fatal(err)
+		return err
+	}
+	allExtensionsMap[factory.Id] = factory
+	common.Storage.GetExtensionData("default", &generalExtensionData)
+
+	if val, ok := generalExtensionData.ExtensionStatusMap[factory.Id]; ok && val {
+		loadExtension(factory)
+	}
+	return nil
+}
+
+func loadExtension(factory ExtensionFactory) error {
+	extension := factory.Builder()
+	extension.init(factory.Id)
+
+	// fmt.Printf("Registered extension: %+v\n", extension)
+	enabledExtensionsMap[factory.Id] = &extension
+
+	return nil
+}