49 lines
1.4 KiB
JavaScript
49 lines
1.4 KiB
JavaScript
// Google Gemini Provider — raw fetch, no SDK
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import { LLMProvider } from './provider.mjs';
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export class GeminiProvider extends LLMProvider {
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constructor(config) {
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super(config);
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this.name = 'gemini';
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this.apiKey = config.apiKey;
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this.model = config.model || 'gemini-3.1-pro';
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}
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get isConfigured() { return !!this.apiKey; }
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async complete(systemPrompt, userMessage, opts = {}) {
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const url = `https://generativelanguage.googleapis.com/v1beta/models/${this.model}:generateContent?key=${this.apiKey}`;
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const res = await fetch(url, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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systemInstruction: { parts: [{ text: systemPrompt }] },
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contents: [{ parts: [{ text: userMessage }] }],
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generationConfig: {
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maxOutputTokens: opts.maxTokens || 4096,
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},
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}),
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signal: AbortSignal.timeout(opts.timeout || 60000),
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});
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if (!res.ok) {
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const err = await res.text().catch(() => '');
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throw new Error(`Gemini API ${res.status}: ${err.substring(0, 200)}`);
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}
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const data = await res.json();
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const text = data.candidates?.[0]?.content?.parts?.[0]?.text || '';
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return {
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text,
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usage: {
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inputTokens: data.usageMetadata?.promptTokenCount || 0,
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outputTokens: data.usageMetadata?.candidatesTokenCount || 0,
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},
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model: this.model,
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};
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}
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}
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