import { createRouter, createWebHistory } from 'vue-router'
import { useAuthStore } from '../stores/auth'
import AppLayout from '../views/AppLayout.vue'
import SettingsLayout from '../views/settings/SettingsLayout.vue'
import { setupComplete, setupSkipped, isSetupLoaded, refreshSetupState } from '../composables/setupState'
import { loadEnabledPlugins, isPluginEnabled } from '../composables/enabledPlugins'
import { useToast } from '../composables/toast'

// Auto-discover all route modules from routes/ directory
const routeModules = import.meta.glob('./routes/*.js', { eager: true })
const rawChildren = Object.values(routeModules).flatMap(m => m.default)

// Gather the settings pages (spread across plugin route files) and nest them
// under a single two-pane shell so the grouped rail stays put while the right
// pane swaps. Slides is a sidebar page that happens to live at /settings/slides;
// keep it full-width (not inside the settings rail).
const SETTINGS_STANDALONE = new Set(['settings/slides'])
const settingsChildren = []
const otherChildren = []
for (const route of rawChildren) {
  const path = route.path
  if (path === 'settings') {
    // Old index becomes the shell's default child (keeps name 'settings').
    settingsChildren.unshift({ ...route, path: '' })
  } else if (typeof path === 'string' && path.startsWith('settings/') && !SETTINGS_STANDALONE.has(path)) {
    settingsChildren.push({ ...route, path: path.replace(/^settings\//, '') })
  } else {
    otherChildren.push(route)
  }
}
const appChildren = [
  ...otherChildren,
  {
    path: 'settings',
    component: SettingsLayout,
    meta: { requiresAuth: true, requiresAdmin: true },
    children: settingsChildren,
  },
]

const routes = [
  {
    path: '/login',
    name: 'login',
    component: () => import('../views/Login.vue'),
    meta: { guest: true }
  },
  // First-run setup wizard (standalone, admin-only)
  {
    path: '/setup',
    name: 'setup',
    component: () => import('../views/SetupWizard.vue'),
    meta: { requiresAuth: true, requiresAdmin: true }
  },
  // Standalone full-screen dashboards (no sidebar, no auth required)
  {
    path: '/shopfloor',
    name: 'shopfloor',
    component: () => import('../views/ShopfloorDashboard.vue')
  },
  {
    path: '/tv',
    name: 'tv',
    component: () => import('../views/TVDashboard.vue'),
    meta: { plugin: 'slides' }
  },
  // Print pages (standalone, no sidebar/header)
  {
    path: '/print/machine-badge/:id',
    name: 'print-machine-badge',
    component: () => import('../views/print/MachineBadge.vue')
  },
  {
    path: '/print/printer-qr',
    name: 'print-printer-qr-batch',
    component: () => import('../views/print/PrinterQRBatch.vue'),
    meta: { plugin: 'printers' }
  },
  {
    path: '/print/printer-qr/:id',
    name: 'print-printer-qr-single',
    component: () => import('../views/print/PrinterQRSingle.vue'),
    meta: { plugin: 'printers' }
  },
  {
    path: '/print/usb-labels',
    name: 'print-usb-labels',
    component: () => import('../views/print/USBLabelBatch.vue'),
    meta: { plugin: 'usb' }
  },
  {
    path: '/',
    component: AppLayout,
    children: appChildren
  }
]

const router = createRouter({
  history: createWebHistory(),
  routes
})

// Navigation guard
router.beforeEach(async (to, from, next) => {
  const authStore = useAuthStore()

  if (to.meta.requiresAuth && !authStore.isAuthenticated) {
    return next('/login')
  }
  if (to.meta.requiresAdmin && !authStore.isAdmin) {
    return next('/')
  }
  if (to.meta.guest && authStore.isAuthenticated) {
    return next('/')
  }

  // Plugin gating: a disabled backend plugin's frontend routes are dead ends.
  // The enabled list is fetched once and cached; fail-open on error so a blip
  // cannot brick navigation. Works unauthenticated (endpoint is jwt-optional).
  if (to.meta.plugin) {
    await loadEnabledPlugins()
    if (!isPluginEnabled(to.meta.plugin)) {
      useToast().info(`The ${to.meta.plugin} feature is not enabled.`)
      return next('/')
    }
  }

  // First-run: steer a fresh admin into the setup wizard (once, until finished).
  if (authStore.isAuthenticated && authStore.isAdmin && to.path !== '/setup') {
    if (!isSetupLoaded()) {
      await refreshSetupState()
    }
    if (!setupComplete.value && !setupSkipped.value) {
      return next('/setup')
    }
  }

  next()
})

export default router