/* Swagger UI uses the same origin as this page; no token or specification is sent to third parties. */
'use strict';

const apiBase = `${window.location.origin}/api/mini/v1`;
const statusElement = document.getElementById('service-status');
const refreshButton = document.getElementById('refresh-status');
document.getElementById('base-url').textContent = apiBase;

async function refreshStatus() {
  refreshButton.disabled = true;
  statusElement.textContent = '正在检查服务状态…';
  const controller = new AbortController();
  const timeout = setTimeout(() => controller.abort(), 10000);
  try {
    const response = await fetch(`${apiBase}/config`, {
      cache: 'no-store', credentials: 'omit', signal: controller.signal,
    });
    const body = await response.json();
    if (!response.ok || body.code !== 0) throw new Error('服务状态读取失败');
    const capabilities = body.data.capabilities;
    statusElement.textContent = `服务可访问 · 微信登录${capabilities.wechat_login ? '已配置' : '未配置'} · 支付${capabilities.payment ? '已开放' : '未开放'}`;
  } catch {
    statusElement.textContent = '服务状态读取失败，请检查后端服务和来源白名单';
  } finally {
    clearTimeout(timeout);
    refreshButton.disabled = false;
  }
}

async function loadDocumentation() {
  try {
    if (typeof SwaggerUIBundle !== 'function') throw new Error('Swagger UI 静态资源加载失败');
    const response = await fetch('./openapi.json', { cache: 'no-store', credentials: 'omit' });
    if (!response.ok) throw new Error(`OpenAPI 文件加载失败（HTTP ${response.status}）`);
    const specification = await response.json();
    specification.servers = [{ url: apiBase, description: '当前服务' }];
    const methods = new Set(['get', 'head', 'post', 'put', 'patch', 'delete', 'options', 'trace']);
    const count = Object.values(specification.paths)
      .reduce((total, item) => total + Object.keys(item).filter(key => methods.has(key)).length, 0);
    document.getElementById('operation-count').textContent = `${count} 个接口操作（含 HEAD）`;
    window.ui = SwaggerUIBundle({
      spec: specification,
      dom_id: '#swagger-ui',
      deepLinking: true,
      filter: true,
      docExpansion: 'list',
      defaultModelsExpandDepth: -1,
      displayRequestDuration: true,
      persistAuthorization: false,
      withCredentials: false,
      validatorUrl: null,
      queryConfigEnabled: false,
      presets: [SwaggerUIBundle.presets.apis],
      layout: 'BaseLayout',
      requestInterceptor(request) {
        const target = new URL(request.url, window.location.href);
        if (target.origin !== window.location.origin || !target.pathname.startsWith('/api/mini/v1/')) {
          throw new Error('此文档页面仅允许调用当前服务的小程序接口');
        }
        request.credentials = 'omit';
        return request;
      },
    });
  } catch (error) {
    const element = document.getElementById('load-error');
    element.textContent = `${error.message}。请刷新页面；也可以下载 OpenAPI 导入 Apifox。`;
    element.hidden = false;
  }
}

refreshButton.addEventListener('click', refreshStatus);
refreshStatus();
loadDocumentation();