/**
 * Model capability detection for native audio input support.
 * 
 * Models that support native audio will receive raw audio data directly.
 * Models that don't will receive a Whisper transcript as text instead.
 */

export type ModelProvider = 'anthropic' | 'openai' | 'gemini' | 'bedrock' | 'github' | 'ollama' | 'llamacpp' | 'openrouter' | 'zhipuai' | 'xai';

/** Providers that support native audio input in their API. */
const AUDIO_CAPABLE_PROVIDERS = new Set<string>([
  'gemini',
  'openai',
  'github',  // GitHub Models uses OpenAI-compatible API
]);

/**
 * Models known NOT to support audio despite their provider supporting it.
 * For example, older OpenAI models or specialized models.
 */
const AUDIO_INCAPABLE_MODELS = new Set<string>([
  // Older OpenAI models that predate audio input support
  'gpt-3.5-turbo',
  'gpt-4',
  'gpt-4-turbo',
]);

/**
 * Check whether a provider+model combination supports native audio input.
 * 
 * Returns true if the model can receive raw audio data directly via its API,
 * false if audio must be transcribed to text before sending.
 */
export function supportsAudioInput(provider: string, model: string, override?: boolean): boolean {
  if (override !== undefined) return override;

  // Provider must be in the capable set
  if (!AUDIO_CAPABLE_PROVIDERS.has(provider)) {
    return false;
  }

  // Check model-specific exclusions
  if (AUDIO_INCAPABLE_MODELS.has(model)) {
    return false;
  }

  return true;
}