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

// 导入页面组件
import Home from '@/views/Home.vue'
import Courses from '@/views/Courses.vue'
import CourseDetail from '@/views/CourseDetail.vue'
import Learning from '@/views/Learning.vue'
import Profile from '@/views/Profile.vue'
import Login from '@/views/Login.vue'
import Register from '@/views/Register.vue'

const routes: RouteRecordRaw[] = [
  {
    path: '/',
    name: 'Home',
    component: Home,
    meta: {
      title: '首页'
    }
  },
  {
    path: '/courses',
    name: 'Courses',
    component: Courses,
    meta: {
      title: '课程列表'
    }
  },
  {
    path: '/course/:id',
    name: 'CourseDetail',
    component: CourseDetail,
    meta: {
      title: '课程详情'
    }
  },
  {
    path: '/learning/:id',
    name: 'Learning',
    component: Learning,
    meta: {
      title: '学习中心',
      requiresAuth: true
    }
  },
  {
    path: '/profile',
    name: 'Profile',
    component: Profile,
    meta: {
      title: '个人中心',
      requiresAuth: true
    }
  },
  {
    path: '/login',
    name: 'Login',
    component: Login,
    meta: {
      title: '登录'
    }
  },
  {
    path: '/register',
    name: 'Register',
    component: Register,
    meta: {
      title: '注册'
    }
  },
  {
    path: '/:pathMatch(.*)*',
    name: 'NotFound',
    component: () => import('@/views/NotFound.vue'),
    meta: {
      title: '页面未找到'
    }
  }
]

const router = createRouter({
  history: createWebHistory(),
  routes,
  scrollBehavior(_to, _from, savedPosition) {
    if (savedPosition) {
      return savedPosition
    } else {
      return { top: 0 }
    }
  }
})

// 路由守卫
router.beforeEach((to, _from, next) => {
  // 设置页面标题
  if (to.meta.title) {
    document.title = `${to.meta.title} - 在线学习平台`
  }

  // 检查是否需要登录
  if (to.meta.requiresAuth) {
    // 这里可以检查用户登录状态
    // 暂时跳过认证检查
    next()
  } else {
    next()
  }
})

export default router
