n8n-nodes-starter/docs/enhancement_roadmap.md

Enhancement Roadmap

This document outlines a high-level roadmap for enhancing the n8n-nodes-suno-ai project, focusing on moving from the current mocked implementation to a production-ready node.

Guiding Principles

• Address Non-Functional Requirements (NFRs) outlined in docs/enhancement_requirements.md.
• Iteratively replace mocked components with real API integrations.
• Prioritize a stable and reliable core feature set.
• Continuously improve code quality and test coverage.

Proposed Milestones

Milestone 1: Solidify Mock Implementation & Core Structure (Current Phase After This)

• Goal: Ensure the current mocked implementation is robust, well-documented, and all planned mock features are complete. Address immediate structural issues.
• Key Tasks:
  • Done: Populate interfaces/SunoTypes.ts.
  • Pending: Verify and remove HttpBinApi.credentials.ts.
  • Pending: Refactor console.log usage to a more structured approach or remove where appropriate (especially in utils/sunoApi.ts and trigger nodes).
  • Pending: Ensure all mocked API functions in utils/sunoApi.ts correctly use and return types from SunoTypes.ts.
  • Pending: Enhance tests/checkEndpoints.ts to cover all mocked functionalities and provide clearer success/failure reporting.
  • Documentation: Ensure JSDoc comments are complete for all modules. Update dev-log.md consistently.

Milestone 2: Real API Integration - Authentication & Basic Read Operations

• Goal: Implement real authentication against the Suno API and integrate simple read-only operations.
• Key Tasks:
  • Authentication Research (Actual): Perform the detailed API investigation previously simulated (Phase 3 of original issue). Document actual auth endpoints, request/response formats, token/cookie handling, refresh mechanisms. Update docs/dev-log.md.
  • Implement Real loginWithCredentials: Update utils/sunoApi.ts and SunoApi.credentials.ts to use the actual Suno login mechanism. Securely handle tokens/session data.
  • Implement Real listPreviousSongs: Connect this to the actual Suno API endpoint. Handle actual data parsing and error responses.
  • Implement Real isAuthenticated / refreshSessionIfExpired: Based on actual API behavior.
  • Testing: Add basic integration tests for login and listing songs with test credentials (if possible without cost).
  • Documentation: Update API interaction details in docs/dev-log.md.

Milestone 3: Real API Integration - Core Generation & Management Features

• Goal: Implement the core music generation and management features using the real Suno API.
• Key Tasks:
  • Implement Real submitPrompt: Connect to the actual endpoint. Handle prompt options and API responses (job ID, initial status).
  • Implement Real pollJobStatus: Connect to the actual endpoint. Handle different job statuses and potential errors.
  • Implement Real downloadTrack: Connect to the actual endpoint. Handle binary data correctly.
  • (If Applicable) Implement Real uploadReferenceTrack: Based on Suno API capabilities.
  • Error Handling: Implement comprehensive error handling for all API calls as per NFR1.
  • Node Logic: Ensure Suno.node.ts correctly processes real API responses and errors.
  • Testing: Expand integration tests for these core features.

Milestone 4: Real API Integration - Triggers & Advanced Features

• Goal: Implement robust triggers with real API data and any other advanced features.
• Key Tasks:
  • Refine SunoTrigger.node.ts for trackGenerationComplete: Use real pollJobStatus. Implement robust state management to prevent re-triggering for already processed completed tracks (e.g., storing emitted job/track IDs within trigger state or using a small local cache if appropriate for n8n trigger lifecycle).
  • Refine SunoTrigger.node.ts for newSongAvailable: Use real listPreviousSongs. Implement robust state management for detecting genuinely new songs (e.g., comparing against a list of previously seen song IDs from the last poll).
  • Input Validation: Add comprehensive input validation for all node parameters in Suno.node.ts and SunoTrigger.node.ts.
  • (If Applicable) Implement other API features identified (e.g., selectVoice).
  • Testing: Add tests for trigger logic (might require more advanced test setups).

Milestone 5: Refinement, Testing, and Release Preparation

• Goal: Polish the node, ensure comprehensive testing, and prepare for a potential "release" or wider use.
• Key Tasks:
  • Code Review & Refactoring: Perform a full code review against NFRs (Maintainability, Reliability, Performance).
  • Comprehensive Testing:
    • Expand unit tests for utility functions and complex logic.
    • Ensure integration tests cover all operations and triggers with various scenarios.
    • Perform end-to-end testing within n8n.
  • Documentation Review: Ensure all user-facing descriptions (node properties, operations) are clear and accurate. Finalize README.md for the node.
  • Performance Optimization: Based on testing, identify and address any performance bottlenecks if the actual API is slow.
  • Finalize README.md and other documentation. (e.g., user guide snippets).

Future Considerations (Post-Milestone 5)

• OAuth 2.0 authentication if Suno API supports it.
• Support for more advanced Suno API features as they become available.
• Community feedback and feature requests.