feat(api): investigate and implement ElevenLabs provider support

[jiangzhuo]

Overview

Investigate and implement support for ElevenLabs as a new API provider in Sokuji React, expanding the available voice AI options beyond the current OpenAI and Gemini providers.

Background

ElevenLabs offers high-quality text-to-speech and voice AI services with:

• Advanced voice synthesis technology
• Multiple voice models and options
• Real-time streaming capabilities
• Voice cloning features
• Multilingual support

Adding ElevenLabs as a provider would enhance Sokuji's voice capabilities and provide users with more options for voice generation and processing.

Investigation Tasks

1. API Research

• Study ElevenLabs API documentation and capabilities
• Identify available endpoints for real-time voice processing
• Research rate limits, pricing, and authentication methods
• Evaluate compatibility with Sokuji's current architecture

2. Technical Analysis

• Analyze how ElevenLabs API fits into current provider structure
• Identify required changes to SettingsContext for ElevenLabs configuration
• Review audio streaming requirements and WebSocket support
• Assess integration complexity with existing voice pipeline

3. Implementation Planning

• Design API client interface following existing patterns (OpenAIClient, GeminiClient)
• Plan UI modifications for ElevenLabs-specific settings
• Identify required translation keys for internationalization
• Plan testing strategy for new provider

Proposed Implementation

Core Components to Modify

1. Settings Context (src/contexts/SettingsContext.tsx)

   • Add elevenlabs to provider type union
   • Add elevenlabsApiKey field
   • Add ElevenLabs-specific configuration options

2. API Services (src/services/)

   • Create ElevenLabsClient class
   • Implement voice streaming interface
   • Add error handling and retry logic

3. UI Components

   • Update provider selection in settings panel
   • Add ElevenLabs icon (following react-icons/ri convention)
   • Add ElevenLabs-specific configuration controls

4. Internationalization

   • Add ElevenLabs-related translation keys to all 30 language files
   • Ensure consistent terminology across languages

Configuration Requirements

• API key authentication
• Voice model selection
• Voice settings (speed, stability, etc.)
• Language/locale configuration
• Audio format preferences

Success Criteria

• ElevenLabs appears as selectable provider in settings
• Users can configure ElevenLabs API key and settings
• Voice processing works seamlessly with ElevenLabs API
• All existing functionality remains unaffected
• Complete internationalization support (30 languages)
• Proper error handling and user feedback
• Documentation updated with ElevenLabs setup instructions

Technical Considerations

• API Compatibility: Ensure ElevenLabs API supports real-time streaming requirements
• Audio Format: Verify audio format compatibility with current pipeline
• Rate Limits: Handle ElevenLabs API rate limiting appropriately
• Error Handling: Provide clear error messages for API issues
• Performance: Maintain low latency for real-time voice processing

Dependencies

• Research ElevenLabs JavaScript/TypeScript SDK availability
• Potential new npm packages for ElevenLabs integration
• Audio processing compatibility verification

Timeline

This is an investigative task that should be broken down into smaller implementation issues based on research findings.

Related Issues

This enhancement builds upon the existing multi-provider architecture established with OpenAI and Gemini support.

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Priority: Medium
Type: Feature Enhancement
Scope: API Integration, UI Enhancement