feat(workspace): synchronize folders with server and add folder deletion

internal/storage/sqlite_test.go

@@ -1,6 +1,7 @@
 package storage
 
 import (
+	"os"
 	"path/filepath"
 	"testing"
 
@@ -317,3 +318,83 @@ func TestEnsureDemoAccountsAndLoginLookup(t *testing.T) {
 		t.Fatalf("second EnsureDemoAccounts call failed: %v", err)
 	}
 }
+
+func TestFolderManagementAndDeletion(t *testing.T) {
+	tmpDir := t.TempDir()
+	dbPath := filepath.Join(tmpDir, "folder_test.db")
+	docDir := filepath.Join(tmpDir, "workspace")
+
+	store, err := NewStore(dbPath)
+	if err != nil {
+		t.Fatalf("NewStore failed: %v", err)
+	}
+	defer store.Close()
+
+	user, err := store.CreateUser("folderuser@example.com", "hash", "Folder User", "member")
+	if err != nil {
+		t.Fatalf("CreateUser failed: %v", err)
+	}
+
+	// 1. Create folders on disk
+	f1, err := store.CreateFolder(user.ID, "Projekte/MindSift")
+	if err != nil || f1 != "Projekte/MindSift" {
+		t.Fatalf("CreateFolder failed: %v, f1=%s", err, f1)
+	}
+	f2, err := store.CreateFolder(user.ID, "Archiv")
+	if err != nil || f2 != "Archiv" {
+		t.Fatalf("CreateFolder Archiv failed: %v", err)
+	}
+
+	// 2. Create document in subfolder
+	doc1, err := store.CreateDocument(user.ID, "", "Doc in MindSift", "📄", "Projekte/MindSift", nil, nil, false)
+	if err != nil {
+		t.Fatalf("CreateDocument failed: %v", err)
+	}
+	doc2, err := store.CreateDocument(user.ID, "", "SubDoc", "📝", "Projekte/MindSift/Sub", nil, nil, false)
+	if err != nil {
+		t.Fatalf("CreateDocument 2 failed: %v", err)
+	}
+
+	// 3. GetFolders
+	folders, err := store.GetFolders(user.ID)
+	if err != nil {
+		t.Fatalf("GetFolders failed: %v", err)
+	}
+	expected := map[string]bool{
+		"Archiv":                 true,
+		"Projekte":               true,
+		"Projekte/MindSift":      true,
+		"Projekte/MindSift/Sub":  true,
+	}
+	for _, f := range folders {
+		delete(expected, f)
+	}
+	if len(expected) > 0 {
+		t.Fatalf("GetFolders missing expected folders: %v (got %v)", expected, folders)
+	}
+
+	// 4. DeleteFolder "Projekte/MindSift" -> should remove doc1 & doc2
+	deletedDocs, err := store.DeleteFolder(user.ID, "Projekte/MindSift")
+	if err != nil {
+		t.Fatalf("DeleteFolder failed: %v", err)
+	}
+	if len(deletedDocs) != 2 {
+		t.Fatalf("expected 2 deleted docs, got %d (%v)", len(deletedDocs), deletedDocs)
+	}
+
+	// Verify docs are gone from DB
+	_, err = store.GetDocumentByID(user.ID, doc1.ID)
+	if err == nil {
+		t.Fatalf("expected doc1 to be deleted")
+	}
+	_, err = store.GetDocumentByID(user.ID, doc2.ID)
+	if err == nil {
+		t.Fatalf("expected doc2 to be deleted")
+	}
+
+	// Verify disk directory was deleted
+	diskFolder := filepath.Join(docDir, user.ID, "Projekte/MindSift")
+	if _, err := os.Stat(diskFolder); !os.IsNotExist(err) {
+		t.Fatalf("expected directory %s to be deleted on disk", diskFolder)
+	}
+}