// 模型网关配置。字段和团队的 provider 配置保持一致：
//
//   eastmoney:
//     displayName: 东财AI网关
//     apiKeyEnv: EASTMONEY_API_KEY
//     api: openai-completions
//     baseURL: https://dd-ai-api.eastmoney.com/coding/v1
//     models: [DeepSeek-V4.1-Flash-1017]
//
// 密钥只从环境变量读取。项目根目录的 .env.local（不进 git）会在启动时加载。
import { existsSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import type { Provider } from './llm.ts';

export const PROJECT_ROOT = fileURLToPath(new URL('..', import.meta.url));

const eastmoney = {
  displayName: '东财AI网关',
  apiKeyEnv: 'EASTMONEY_API_KEY',
  api: 'openai-completions' as const,
  baseURL: 'https://dd-ai-api.eastmoney.com/coding/v1',
  model: 'DeepSeek-V4.1-Flash-1017',
};

export function loadProvider(): Provider {
  const envFile = `${PROJECT_ROOT}.env.local`;
  if (existsSync(envFile)) process.loadEnvFile(envFile);

  const apiKey = process.env[eastmoney.apiKeyEnv];
  if (!apiKey) {
    throw new Error(
      `缺少模型网关密钥。请设置环境变量 ${eastmoney.apiKeyEnv}，或写进 ${envFile}（参考 .env.example）。`,
    );
  }
  return {
    displayName: eastmoney.displayName,
    api: eastmoney.api,
    baseURL: process.env.LLM_BASE_URL ?? eastmoney.baseURL,
    model: process.env.LLM_MODEL ?? eastmoney.model,
    apiKey,
  };
}