# Summary: rest_browser_workflows.py

# rest_browser_workflows.py Summary

**Summary:** REST API handlers for managing recorded browser interaction workflows (CRUD operations). Provides endpoints to list, retrieve, create, update, and delete workflows with full validation and error handling. Integrates with a session manager to persist workflow data including steps, variables, and metadata.

**Purpose:** Exposes a RESTful interface for workflow management in a browser automation system. Solves the problem of programmatically managing recorded user interaction sequences (workflows) that can be replayed or analyzed, with support for filtering by application name and tracking usage statistics.

**Most Important Functions/Classes:**

1. **`list_workflows()`** — GET endpoint that retrieves all workflows with optional filtering by `app_name` query parameter; returns up to 200 workflows as JSON array with full serialization support for complex objects.

2. **`create_workflow()`** — POST endpoint that validates required `name` field and optional metadata (description, app_name, start_url); serializes `steps` and `variables` arrays to JSON strings before persistence; returns 201 status with created workflow.

3. **`update_workflow()`** — PATCH endpoint that selectively updates workflow fields; validates that at least one field is provided; handles JSON serialization for complex fields (steps, variables); returns updated workflow or error if not found.

4. **`get_workflow()` & `delete_workflow()`** — GET and DELETE endpoints for individual workflow operations; both perform existence checks before operating; delete returns 204 No Content on success.

5. **`_workflow_dict()`** — Helper function that converts internal WorkflowEntry objects to JSON-serializable dictionaries; handles deserialization of JSON-stringified fields (steps, variables) and exposes metadata (use_count, timestamps).

**Architecture & Dependencies:**
- Built on **aiohttp** web framework for async HTTP handling
- Depends on **session manager** (via `get_session_manager()`) for data persistence layer
- Uses custom JSON serializer (`_JSON_DUMPS`) with `default=str` fallback for non-standard types
- Follows REST conventions with proper HTTP status codes (201 for creation, 404 for not found, 400 for validation errors, 500 for server errors)
- Stateless handlers that delegate business logic to session manager; no direct database access