fix(gappsscript): default update_script_content to safe merge mode

README.md

@@ -1033,7 +1033,7 @@ The required scopes (`chat.spaces.readonly`, `chat.messages.readonly`, `chat.mes
 | <sub>`get_script_project`</sub> | <sub>Core</sub> | <sub>Get complete project with all files</sub> |
 | <sub>`get_script_content`</sub> | <sub>Core</sub> | <sub>Retrieve specific file content</sub> |
 | <sub>`create_script_project`</sub> | <sub>Core</sub> | <sub>Create new standalone or bound project</sub> |
-| <sub>`update_script_content`</sub> | <sub>Core</sub> | <sub>Update or create script files</sub> |
+| <sub>`update_script_content`</sub> | <sub>Core</sub> | <sub>Merge or replace script project files</sub> |
 | <sub>`run_script_function`</sub> | <sub>Core</sub> | <sub>Execute function with parameters</sub> |
 | <sub>`list_deployments`</sub> | <sub>Extended</sub> | <sub>List all project deployments</sub> |
 | <sub>`manage_deployment`</sub> | <sub>Extended</sub> | <sub>Create, update, or delete script deployments</sub> |

README_NEW.md

@@ -174,7 +174,7 @@ export OAUTHLIB_INSECURE_TRANSPORT=1  # Development only
 | `get_script_project` | Core | Get complete project with all files |
 | `get_script_content` | Core | Retrieve specific file content |
 | `create_script_project` | Core | Create new standalone or bound project |
-| `update_script_content` | Core | Update or create script files |
+| `update_script_content` | Core | Merge or replace script project files |
 | `run_script_function` | Core | Execute function with parameters |
 | `list_deployments` | Extended | List all project deployments |
 | `manage_deployment` | Extended | Create, update, or delete script deployments |

gappsscript/README.md

@@ -186,7 +186,7 @@ Essential operations for reading, writing, and executing scripts:
 - `get_script_project`: Get full project with all files
 - `get_script_content`: Get specific file content
 - `create_script_project`: Create new project
-- `update_script_content`: Modify project files
+- `update_script_content`: Merge or replace project files (`merge=true` by default)
 - `run_script_function`: Execute functions
 - `generate_trigger_code`: Generate trigger setup code
 
@@ -271,7 +271,9 @@ Files:
 The AI will:
 1. Read current code
 2. Generate improved version
-3. Call `update_script_content` with new files
+3. Call `update_script_content` with the changed files (`merge=true` merges by file name)
+
+To delete files or replace the entire project, pass `merge=false` with the complete desired file set.
 
 ### Run Script Function
 

gappsscript/apps_script_tools.py

@@ -16,6 +16,35 @@
 logger = logging.getLogger(__name__)
 
 
+def _normalize_script_file(file: Dict[str, Any]) -> Dict[str, str]:
+    """Return the Script API file fields used for updateContent requests."""
+    return {
+        "name": file.get("name", ""),
+        "type": file.get("type", ""),
+        "source": file.get("source", ""),
+    }
+
+
+def _merge_script_files(
+    existing_files: List[Dict[str, Any]],
+    updated_files: List[Dict[str, Any]],
+) -> List[Dict[str, str]]:
+    """Overlay updated files onto the current project by file name."""
+    merged = {
+        file.get("name"): _normalize_script_file(file)
+        for file in existing_files
+        if file.get("name")
+    }
+
+    for file in updated_files:
+        name = file.get("name")
+        if not name:
+            continue
+        merged[name] = _normalize_script_file(file)
+
+    return list(merged.values())
+
+
 # Internal implementation functions for testing
 async def _list_script_projects_impl(
     service: Any,
@@ -320,26 +349,45 @@ async def _update_script_content_impl(
     user_google_email: str,
     script_id: str,
     files: List[Dict[str, str]],
+    merge: bool = True,
 ) -> str:
     """Internal implementation for update_script_content."""
     logger.info(
-        f"[update_script_content] Email: {user_google_email}, ID: {script_id}, Files: {len(files)}"
+        f"[update_script_content] Email: {user_google_email}, ID: {script_id}, "
+        f"Files: {len(files)}, merge: {merge}"
     )
 
-    request_body = {"files": files}
+    files_to_push = [_normalize_script_file(file) for file in files]
+
+    if merge:
+        current_content = await asyncio.to_thread(
+            service.projects().getContent(scriptId=script_id).execute
+        )
+        files_to_push = _merge_script_files(
+            current_content.get("files", []), files_to_push
+        )
+
+    request_body = {"files": files_to_push}
 
     updated_content = await asyncio.to_thread(
         service.projects().updateContent(scriptId=script_id, body=request_body).execute
     )
 
-    output = [f"Updated script project: {script_id}", "", "Modified files:"]
+    mode = "merged into project" if merge else "replaced entire project"
+    output = [
+        f"Updated script project: {script_id} ({mode})",
+        "",
+        "Files in project after update:",
+    ]
 
     for file in updated_content.get("files", []):
         file_name = file.get("name", "Untitled")
         file_type = file.get("type", "Unknown")
         output.append(f"- {file_name} ({file_type})")
 
-    logger.info(f"[update_script_content] Updated {len(files)} files in {script_id}")
+    logger.info(
+        f"[update_script_content] Updated {len(files_to_push)} files in {script_id}"
+    )
     return "\n".join(output)
 
 
@@ -359,21 +407,29 @@ async def update_script_content(
     user_google_email: str,
     script_id: str,
     files: List[Dict[str, str]],
+    merge: bool = True,
 ) -> str:
     """
-    Updates or creates files in a script project.
+    Update or create files in a script project.
+
+    By default this merges the supplied files into the existing project by file
+    name, leaving other files untouched. Set merge=False to replace the entire
+    project: any existing file omitted from `files` is permanently deleted.
 
     Args:
         service: Injected Google API service client
         user_google_email: User's email address
         script_id: The script project ID
-        files: List of file objects with name, type, and source
+        files: File objects with name, type, and source to create or update
+        merge: When True (default), overlay these files onto the current
+            project. When False, replace the full project file set; omitted
+            files are deleted.
 
     Returns:
         str: Formatted string confirming update with file list
     """
     return await _update_script_content_impl(
-        service, user_google_email, script_id, files
+        service, user_google_email, script_id, files, merge
     )
 
 

skills/managing-google-workspace/references/apps-script.md

@@ -63,13 +63,14 @@ Retrieves content of a specific file within a project.
 | file_name | string | yes | | |
 
 ### update_script_content
-Updates or creates files in a script project.
+Merge or replace files in a script project. Defaults to merging supplied files by name into the existing project; set `merge=false` to replace the full project (omitted files are deleted).
 
 | Parameter | Type | Required | Default | Notes |
 |-----------|------|----------|---------|-------|
 | user_google_email | string | yes | | |
 | script_id | string | yes | | |
-| files | array | yes | | List of objects with `name`, `type`, and `source` |
+| files | array | yes | | Objects with `name`, `type`, and `source` |
+| merge | boolean | no | true | `true` overlays updates; `false` replaces the entire project |
 
 ---
 

tests/gappsscript/test_apps_script_tools.py

@@ -20,6 +20,7 @@
     _get_script_project_impl,
     _create_script_project_impl,
     _update_script_content_impl,
+    _merge_script_files,
     _run_script_function_impl,
     _create_deployment_impl,
     _list_deployments_impl,
@@ -140,7 +141,7 @@ async def test_create_script_project():
 
 @pytest.mark.asyncio
 async def test_update_script_content():
-    """Test updating script project files"""
+    """Test updating script project files with merge disabled."""
     mock_service = Mock()
     files_to_update = [
         {"name": "Code", "type": "SERVER_JS", "source": "function main() {}"}
@@ -154,10 +155,75 @@ async def test_update_script_content():
         user_google_email="test@example.com",
         script_id="test123",
         files=files_to_update,
+        merge=False,
     )
 
     assert "Updated script project: test123" in result
+    assert "replaced entire project" in result
     assert "Code" in result
+    mock_service.projects().getContent.assert_not_called()
+
+
+def test_merge_script_files_overlays_updates_and_preserves_existing():
+    existing = [
+        {"name": "Code", "type": "SERVER_JS", "source": "old code"},
+        {"name": "appsscript", "type": "JSON", "source": "{}"},
+    ]
+    updates = [{"name": "Code", "type": "SERVER_JS", "source": "new code"}]
+
+    merged = _merge_script_files(existing, updates)
+
+    assert len(merged) == 2
+    by_name = {file["name"]: file for file in merged}
+    assert by_name["Code"]["source"] == "new code"
+    assert by_name["appsscript"]["source"] == "{}"
+
+
+def test_merge_script_files_adds_new_file():
+    existing = [{"name": "Code", "type": "SERVER_JS", "source": "code"}]
+    updates = [{"name": "Utils", "type": "SERVER_JS", "source": "function util() {}"}]
+
+    merged = _merge_script_files(existing, updates)
+
+    assert len(merged) == 2
+    by_name = {file["name"]: file for file in merged}
+    assert by_name["Utils"]["source"] == "function util() {}"
+    assert by_name["Code"]["source"] == "code"
+
+
+@pytest.mark.asyncio
+async def test_update_script_content_merge_fetches_existing_files():
+    """Test merge=True overlays updates onto the current project."""
+    mock_service = Mock()
+    existing_files = [
+        {"name": "Code", "type": "SERVER_JS", "source": "old code"},
+        {"name": "appsscript", "type": "JSON", "source": "{}"},
+    ]
+    files_to_update = [
+        {"name": "Code", "type": "SERVER_JS", "source": "new code"}
+    ]
+    merged_files = _merge_script_files(existing_files, files_to_update)
+
+    mock_service.projects().getContent().execute.return_value = {
+        "files": existing_files
+    }
+    mock_service.projects().updateContent().execute.return_value = {
+        "files": merged_files
+    }
+
+    result = await _update_script_content_impl(
+        service=mock_service,
+        user_google_email="test@example.com",
+        script_id="test123",
+        files=files_to_update,
+        merge=True,
+    )
+
+    update_body = mock_service.projects().updateContent.call_args.kwargs["body"]
+    assert update_body == {"files": merged_files}
+    assert "merged into project" in result
+    assert "Code" in result
+    assert "appsscript" in result
 
 
 @pytest.mark.asyncio