feat: add support for embedded jsonld (#33)

doc/ld/documentloader/document_loader.go

@@ -9,6 +9,7 @@ package documentloader
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	jsonld "github.com/piprate/json-gold/ld"
 
@@ -109,17 +110,29 @@ func (l *DocumentLoader) LoadDocument(u string) (*jsonld.RemoteDocument, error)
 			return nil, fmt.Errorf("load document: %w", err)
 		}
 
-		if l.remoteDocumentLoader == nil { // fetching from the remote URL is disabled
-			return nil, ErrContextNotFound
-		}
-
-		return l.loadDocumentFromURL(u)
+		return l.loadRemoteDocument(u)
 	}
 
 	return rd, nil
 }
 
-func (l *DocumentLoader) loadDocumentFromURL(u string) (*jsonld.RemoteDocument, error) {
+func (l *DocumentLoader) loadRemoteDocument(u string) (*jsonld.RemoteDocument, error) {
+	if !strings.HasPrefix(u, "http://") && !strings.HasPrefix(u, "https://") {
+		doc, err := jsonld.DocumentFromReader(strings.NewReader(u))
+		if err != nil {
+			return nil, fmt.Errorf("parse document from reader: %w", err)
+		}
+
+		return &jsonld.RemoteDocument{
+			DocumentURL: u,
+			Document:    doc,
+		}, nil
+	}
+
+	if l.remoteDocumentLoader == nil { // fetching from the remote URL is disabled
+		return nil, ErrContextNotFound
+	}
+
 	rd, err := l.remoteDocumentLoader.LoadDocument(u)
 	if err != nil {
 		return nil, fmt.Errorf("load remote context document: %w", err)

doc/ld/documentloader/document_loader_test.go

@@ -164,6 +164,33 @@ func TestLoadDocument(t *testing.T) {
 		require.NoError(t, err)
 	})
 
+	t.Run("Load embedded document", func(t *testing.T) {
+		store := mockldstore.NewMockContextStore()
+		loader, err := documentloader.NewDocumentLoader(createMockProvider(withContextStore(store)))
+		require.NotNil(t, loader)
+		require.NoError(t, err)
+
+		rd, err := loader.LoadDocument(sampleJSONLDContext)
+
+		require.NotNil(t, rd)
+		require.NoError(t, err)
+
+		require.EqualValues(t, sampleJSONLDContext, rd.DocumentURL)
+		require.NotNil(t, rd.Document)
+	})
+
+	t.Run("Load embedded document fail", func(t *testing.T) {
+		store := mockldstore.NewMockContextStore()
+		loader, err := documentloader.NewDocumentLoader(createMockProvider(withContextStore(store)))
+		require.NotNil(t, loader)
+		require.NoError(t, err)
+
+		rd, err := loader.LoadDocument(`{...}`)
+
+		require.ErrorContains(t, err, "parse document from reader")
+		require.Nil(t, rd)
+	})
+
 	t.Run("Fetch remote context document and import into store", func(t *testing.T) {
 		store := mockldstore.NewMockContextStore()
 		store.Store.ErrGet = storage.ErrDataNotFound