import assert from 'node:assert/strict';
import test from 'node:test';
import { exchangeMiniProgramCode, loadWechatMiniappConfig } from './wechat-miniapp.mjs';

test('loadWechatMiniappConfig prefers miniapp-specific env vars', () => {
  const config = loadWechatMiniappConfig({
    H5_WECHAT_MINIAPP_APP_ID: 'wx-mini',
    H5_WECHAT_MINIAPP_APP_SECRET: 'secret-mini',
    H5_WECHAT_APP_ID: 'wx-other',
    H5_WECHAT_APP_SECRET: 'secret-other',
  });
  assert.equal(config.enabled, true);
  assert.equal(config.appId, 'wx-mini');
  assert.equal(config.appSecret, 'secret-mini');
});

test('exchangeMiniProgramCode calls jscode2session and returns openid', async () => {
  const calls = [];
  const result = await exchangeMiniProgramCode({
    appId: 'wxtest',
    appSecret: 'secret',
    code: 'abc123',
    fetchImpl: async (url) => {
      calls.push(String(url));
      return {
        ok: true,
        async json() {
          return { openid: 'openid-1', session_key: 'sk', unionid: 'union-1' };
        },
      };
    },
  });
  assert.equal(result.openid, 'openid-1');
  assert.equal(result.unionid, 'union-1');
  assert.match(calls[0], /jscode2session\?/);
  assert.match(calls[0], /js_code=abc123/);
});

test('exchangeMiniProgramCode surfaces WeChat errcode', async () => {
  await assert.rejects(
    () =>
      exchangeMiniProgramCode({
        appId: 'wxtest',
        appSecret: 'secret',
        code: 'bad',
        fetchImpl: async () => ({
          ok: true,
          async json() {
            return { errcode: 40029, errmsg: 'invalid code' };
          },
        }),
      }),
    (error) => {
      assert.equal(error.code, 'wechat_miniapp_code_failed');
      assert.match(error.message, /invalid code/);
      return true;
    },
  );
});