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feat(provider): Ollama/local provider + LAT_LLM_BASE_URL/MODEL env overrides #70

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feat(provider): Ollama/local provider + LAT_LLM_BASE_URL/MODEL env overrides #70

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27 changes: 24 additions & 3 deletions src/search/provider.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,17 @@ const vercel: EmbeddingProvider = {
}),
};

function applyEnvOverrides(provider: EmbeddingProvider): EmbeddingProvider {
const baseUrl = process.env.LAT_LLM_BASE_URL;
const model = process.env.LAT_LLM_MODEL;
if (!baseUrl && !model) return provider;
return {
...provider,
...(baseUrl ? { apiBase: baseUrl } : {}),
...(model ? { model } : {}),
};
}

export function detectProvider(key: string): EmbeddingProvider {
if (key.startsWith('REPLAY_LAT_LLM_KEY::')) {
const replayUrl = key.slice('REPLAY_LAT_LLM_KEY::'.length);
Expand All @@ -44,9 +55,19 @@ export function detectProvider(key: string): EmbeddingProvider {
"Anthropic doesn't offer an embedding model. Set LAT_LLM_KEY to an OpenAI (sk-...) or Vercel AI Gateway (vck_...) key.",
);
}
if (key.startsWith('vck_')) return vercel;
if (key.startsWith('sk-')) return openai;
if (key.startsWith('vck_')) return applyEnvOverrides(vercel);
if (key.startsWith('sk-')) return applyEnvOverrides(openai);
// Ollama and other local OpenAI-compatible providers (no auth required)
if (key === 'ollama' || key === 'local') {
return {
name: 'ollama',
apiBase: process.env.LAT_LLM_BASE_URL ?? 'http://localhost:11434/v1',
model: process.env.LAT_LLM_MODEL ?? 'nomic-embed-text',
dimensions: 768,
headers: () => ({ 'Content-Type': 'application/json' }),
};
}
throw new Error(
`Unrecognized LAT_LLM_KEY prefix. Supported: OpenAI (sk-...), Vercel AI Gateway (vck_...).`,
`Unrecognized LAT_LLM_KEY prefix. Supported: OpenAI (sk-...), Vercel AI Gateway (vck_...), Ollama (ollama).`,
);
}