import { createRouter, createWebHistory } from 'vue-router'

/**
 * 数富AI 桌面前端 SPA 路由（无 .html 后缀）
 *
 * 原 MPA（22 个 html 入口 + 22 个 *-main.ts）合并为单入口 index.html；
 * 页面组件懒加载（每个工具页独立 chunk），URL 统一为 /xxx 路径形式。
 */

const routes = [
  { path: '/', redirect: '/home' },
  {
    path: '/login',
    name: 'login',
    component: () => import('@/pages/login/DesktopLoginPage.vue'),
  },
  {
    path: '/home',
    name: 'home',
    component: () => import('@/pages/home/DesktopHomePage.vue'),
  },
  {
    // 密钥未配置完整时的强制引导页（全站拦截落点）
    path: '/setup-secrets',
    name: 'setup-secrets',
    component: () => import('@/pages/setup/DesktopSecretSetupPage.vue'),
  },
  {
    path: '/amazon-console',
    name: 'amazon-console',
    component: () => import('@/pages/amazon/AmazonConsolePage.vue'),
  },
  {
    path: '/image-video',
    name: 'image-video',
    // 视图切换走 ?view=delivery（菜单页 / 带货视频工作台）
    component: () => import('@/pages/image-video/ImageVideoPage.vue'),
  },
  // ---- 亚马逊运营工具（品牌工具，右侧统一任务面板）----
  {
    path: '/collect-data',
    name: 'collect-data',
    component: () => import('@/pages/brand/components/BrandCollectDataTab.vue'),
  },
  {
    path: '/variant-collection',
    name: 'variant-collection',
    component: () => import('@/pages/brand/components/BrandVariantTab.vue'),
  },
  {
    path: '/dedupe',
    name: 'dedupe',
    component: () => import('@/pages/brand/components/BrandDedupeTab.vue'),
  },
  {
    path: '/similar-asin',
    name: 'similar-asin',
    component: () => import('@/pages/brand/components/BrandSimilarAsinTab.vue'),
  },
  {
    path: '/brand',
    name: 'brand',
    component: () => import('@/pages/brand/components/BrandBrandTab.vue'),
  },
  {
    path: '/appearance-patent',
    name: 'appearance-patent',
    component: () => import('@/pages/brand/components/BrandAppearancePatentTab.vue'),
  },
  {
    path: '/split',
    name: 'split',
    component: () => import('@/pages/brand/components/BrandSplitTab.vue'),
  },
  {
    path: '/convert',
    name: 'convert',
    component: () => import('@/pages/brand/components/BrandConvertTab.vue'),
  },
  {
    path: '/publish',
    name: 'publish',
    component: () => import('@/pages/brand/components/BrandPublishTab.vue'),
  },
  {
    path: '/delete-brand',
    name: 'delete-brand',
    component: () => import('@/pages/brand/components/BrandDeleteBrandTab.vue'),
  },
  {
    path: '/product-risk',
    name: 'product-risk',
    component: () => import('@/pages/brand/components/BrandProductRiskTab.vue'),
  },
  {
    path: '/shop-match',
    name: 'shop-match',
    component: () => import('@/pages/brand/components/BrandShopMatchTab.vue'),
  },
  {
    path: '/price-track',
    name: 'price-track',
    component: () => import('@/pages/brand/components/BrandPriceTrackTab.vue'),
  },
  {
    path: '/patrol-delete',
    name: 'patrol-delete',
    component: () => import('@/pages/brand/components/BrandPatrolDeleteTab.vue'),
  },
  {
    path: '/query-asin',
    name: 'query-asin',
    component: () => import('@/pages/brand/components/BrandQueryAsinTab.vue'),
  },
  {
    path: '/shop-data-crawl',
    name: 'shop-data-crawl',
    component: () => import('@/pages/brand/components/BrandShopDataCrawlTab.vue'),
  },
  {
    path: '/withdraw',
    name: 'withdraw',
    component: () => import('@/pages/brand/components/BrandWithdrawTab.vue'),
  },
  // ---- 兜底：未匹配路径回首页（保持与 MPA 时代"未知页 404 后回首页"一致体验）----
  { path: '/:pathMatch(.*)*', redirect: '/home' },
]

const router = createRouter({
  history: createWebHistory(),
  routes,
  scrollBehavior(_to, _from, savedPosition) {
    // 返回工具台的 #group-xxx 锚点由组件 onMounted 处理；普通滚动回顶部
    if (savedPosition) return savedPosition
    return { top: 0 }
  },
})

// 懒加载 chunk 加载失败（网络抖动/瞬间断流）会被 vue-router 静默吞掉，
// 菜单点击表现为"点了没反应"；此处统一重载页面（重新拉最新 index.html 与新 chunk）。
// 用会话内计数做保险丝，网络持续异常时最多重载 2 次，不再死循环。
router.onError((error) => {
  const message = String((error as Error)?.message || '')
  const isChunkLoadError =
    message.includes('Failed to fetch dynamically imported module') ||
    message.includes('Importing a module script failed')
  if (isChunkLoadError) {
    const RELOAD_KEY = 'spa-chunk-reload-count'
    let count = 0
    try {
      count = Number(sessionStorage.getItem(RELOAD_KEY) || '0') || 0
    } catch {
      /* 存储不可用时按首次处理 */
    }
    if (count < 2) {
      try {
        sessionStorage.setItem(RELOAD_KEY, String(count + 1))
      } catch {
        /* 忽略存储异常 */
      }
      console.error(`[router] 页面资源加载失败，重载页面（第 ${count + 1} 次）:`, error)
      window.location.reload()
      return
    }
    try {
      sessionStorage.removeItem(RELOAD_KEY)
    } catch {
      /* 忽略存储异常 */
    }
    console.error('[router] 页面资源多次加载失败，停止重载:', error)
  } else {
    console.error('[router] 路由导航失败:', error)
  }
})

export default router