refactoring: implement review feedback

pkg/thumbnails/imgsource/imgsource.go

@@ -1,33 +1,11 @@
 package imgsource
 
-import "image"
+import (
+	"context"
+	"image"
+)
 
 // Source defines the interface for image sources
 type Source interface {
-	Get(path string, ctx SourceContext) (image.Image, error)
-}
-
-// NewContext creates a new SourceContext instance
-func NewContext() SourceContext {
-	return SourceContext{
-		m: make(map[string]interface{}),
-	}
-}
-
-// SourceContext is used to pass source specific parameters
-type SourceContext struct {
-	m map[string]interface{}
-}
-
-// GetString tries to cast the value to a string
-func (s SourceContext) GetString(key string) string {
-	if s, ok := s.m[key].(string); ok {
-		return s
-	}
-	return ""
-}
-
-// Set sets a value
-func (s SourceContext) Set(key string, val interface{}) {
-	s.m[key] = val
+	Get(ctx context.Context, path string) (image.Image, error)
 }