import axios from 'axios';
import { getLLMConfig } from './config.js';

export async function chat(systemPrompt, userContent) {
  const { provider, apiKey, baseURL, model } = getLLMConfig();
  if (!provider) throw new Error('未設定任何 LLM API Key');

  console.log(`  [LLM] provider=${provider} model=${model}`);

  const headers = {
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${apiKey}`,
  };
  if (provider === 'claude') headers['anthropic-version'] = '2023-06-01';

  const resp = await axios.post(
    `${baseURL.replace(/\/$/, '')}/chat/completions`,
    { model, messages: [{ role: 'system', content: systemPrompt }, { role: 'user', content: userContent }], temperature: 0.2 },
    { headers, timeout: 120000 }
  );
  return resp.data.choices[0].message.content;
}

export async function chatJSON(systemPrompt, userContent) {
  try {
    let text = await chat(systemPrompt, userContent);
    text = text.trim().replace(/^```[^\n]*\n?/, '').replace(/```$/, '').trim();
    return JSON.parse(text);
  } catch (e) {
    console.log(`  [LLM] 解析失敗: ${e.message}`);
    return [];
  }
}