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

// ========== 前台页面组件 ==========
import Home from '@/views/Home.vue'
import Courses from '@/views/Courses.vue'
import CourseDetail from '@/views/CourseDetail.vue'
import CourseDetailEnrolled from '@/views/CourseDetailEnrolled.vue'
import CourseExchanged from '@/views/CourseExchanged.vue'
import CourseStudy from '@/views/CourseStudy.vue'
import Learning from '@/views/Learning.vue'
import Profile from '@/views/Profile.vue'

import LearningPaths from '@/views/LearningPaths.vue'
import Faculty from '@/views/Faculty.vue'
import TeacherDetail from '@/views/TeacherDetail.vue'
import Resources from '@/views/Resources.vue'
import Activities from '@/views/Activities.vue'
import ActivityDetail from '@/views/ActivityDetail.vue'
import ActivityRegistration from '@/views/ActivityRegistration.vue'
import Exam from '@/views/Exam.vue'
import ExamNotice from '@/views/ExamNotice.vue'
import ExamSubmitted from '@/views/ExamSubmitted.vue'
import TestSections from '@/views/TestSections.vue'
import LocalVideoDemo from '@/views/LocalVideoDemo.vue'
import SpecialTraining from '@/views/SpecialTraining.vue'
import SpecialTrainingDetail from '@/views/SpecialTrainingDetail.vue'
import HelpCenter from '@/views/HelpCenter.vue'
import LearningCenter from '@/views/LearningCenter.vue'
import AICompanion from '@/views/AICompanion.vue'

// ========== 管理员后台组件 ==========
import AdminDashboard from '@/views/teacher/AdminDashboard.vue'
import PersonalCenter from '@/components/admin/PersonalCenter.vue'
import CourseManagement from '@/components/admin/CourseManagement.vue'
import MyResources from '@/components/admin/MyResources.vue'
import StudentManagement from '@/components/admin/StudentManagement.vue'

// 课程管理子组件
import CourseCategory from '@/components/admin/CourseComponents/CourseCategory.vue'
import MaterialCategory from '@/components/admin/CourseComponents/MaterialCategory.vue'
import CourseAnalysis from '@/components/admin/CourseComponents/CourseAnalysis.vue'
import CourseCreate from '@/components/admin/CourseComponents/CourseCreate.vue'

// 课程编辑子组件（新增）
import CourseEditor from '@/views/teacher/course/CourseEditor.vue'
import CoursewareManagement from '@/views/teacher/course/CoursewareManagement.vue'
import ChapterManagement from '@/views/teacher/course/ChapterManagement.vue'
import QuestionBankManagement from '@/views/teacher/course/QuestionBankManagement.vue'
import CertificateManagement from '@/views/teacher/course/CertificateManagement.vue'
import DiscussionManagement from '@/views/teacher/course/DiscussionManagement.vue'
import StatisticsManagement from '@/views/teacher/course/StatisticsManagement.vue'
import NotificationManagement from '@/views/teacher/course/NotificationManagement.vue'
import GeneralManagement from '@/views/teacher/course/GeneralManagement.vue'

// 作业子组件
import HomeworkLibrary from '@/views/teacher/course/HomeworkLibrary.vue'
import HomeworkReview from '@/views/teacher/course/HomeworkReview.vue'
import HomeworkReviewDetail from '@/views/teacher/course/HomeworkReviewDetail.vue'
import AddHomework from '@/views/teacher/course/AddHomework.vue'
import HomeworkTemplateImport from '@/views/teacher/course/HomeworkTemplateImport.vue'

// 考试管理组件
import ExamManagement from '@/views/teacher/ExamPages/ExamPage.vue'
import QuestionManagement from '@/views/teacher/ExamPages/QuestionManagement.vue'
import ExamLibrary from '@/views/teacher/ExamPages/ExamLibrary.vue'
import MarkingCenter from '@/views/teacher/ExamPages/MarkingCenter.vue'
import AddExam from '@/views/teacher/ExamPages/AddExam.vue'
import AddQuestion from '@/views/teacher/ExamPages/AddQuestion.vue'
import StudentList from '@/views/teacher/ExamPages/StudentList.vue'
import GradingPage from '@/views/teacher/ExamPages/GradingPage.vue'

import ChapterEditor from '@/views/teacher/course/ChapterEditor.vue'

// ========== 路由配置 ==========
const routes: RouteRecordRaw[] = [
  // 管理后台路由
  {
    path: '/teacher',
    name: 'AdminDashboard',
    component: AdminDashboard,
    meta: {
      title: '管理后台',
      requiresAuth: true
    },
    redirect: '/teacher/course-management',
    children: [
      {
        path: 'personal-center',
        name: 'PersonalCenter',
        component: PersonalCenter,
        meta: { title: '个人中心' }
      },
      {
        path: 'course-management',
        name: 'CourseManagement',
        component: CourseManagement,
        meta: { title: '课程管理' },
        children: [
          {
            path: 'course-category',
            name: 'CourseCategory',
            component: CourseCategory,
            meta: { title: '课程分类' }
          },
          {
            path: 'material-category',
            name: 'MaterialCategory',
            component: MaterialCategory,
            meta: { title: '资料分类' }
          },
          {
            path: 'course-analysis',
            name: 'CourseAnalysis',
            component: CourseAnalysis,
            meta: { title: '课程分析' }
          },

        ]
      },
      {
        path: 'course-create',
        name: 'CourseCreate',
        component: CourseCreate,
        meta: { title: '创建课程' }
      },
      {
        path: 'course-editor/:id',
        name: 'CourseEditor',
        component: CourseEditor,
        meta: { title: '课程管理' },
        redirect: (to) => `/teacher/course-editor/${to.params.id}/courseware`,
        children: [
          {
            path: 'courseware',
            name: 'CoursewareManagement',
            component: CoursewareManagement,
            meta: { title: '课件管理' }
          },
          {
            path: 'chapters',
            name: 'ChapterManagement',
            component: ChapterManagement,
            meta: { title: '章节管理' }
          },

          {
            path: 'homework',
            name: 'HomeworkManagement',
            redirect: (to) => `/teacher/course-editor/${to.params.id}/homework/library`,
            children: [
              {
                path: 'library',
                name: 'HomeworkLibrary',
                component: HomeworkLibrary,
                meta: { title: '作业库' }
              },
              {
                path: 'add-homework',
                name: 'AddHomework',
                component: AddHomework,
                meta: { title: '添加作业' }
              },
              {
                path: 'review',
                name: 'HomeworkReview',
                component: HomeworkReview,
                meta: { title: '批阅作业' }
              },
              {
                path: 'review/:homeworkId',
                name: 'HomeworkReviewDetail',
                component: HomeworkReviewDetail,
                meta: { title: '批阅作业详情' }
              },
              {
                path: 'review/:homeworkId/view/:studentId',
                name: 'HomeworkReviewView',
                component: () => import('../views/teacher/course/HomeworkReviewView.vue'),
                meta: { title: '查看批改作业' }
              },
              {
                path: 'template-import',
                name: 'HomeworkTemplateImport',
                component: HomeworkTemplateImport,
                meta: { title: '作业库模板导入' }
              }
            ]
          },
          {
            path: 'practice',
            name: 'Practice',
            redirect: (to) => `/teacher/course-editor/${to.params.id}/practice/exam`,
            meta: { title: '练考通' },
            children: [
              {
                path: 'exam',
                name: 'PracticeExam',
                component: () => import('../views/teacher/course/PracticeExam.vue'),
                meta: { title: '试卷' }
              },
              {
                path: 'review',
                name: 'PracticeReview',
                component: () => import('../views/teacher/course/PracticeReview.vue'),
                meta: { title: '阅卷中心' }
              }
            ]
          },
          {
            path: 'question-bank',
            name: 'QuestionBankManagement',
            component: QuestionBankManagement,
            meta: { title: '题库管理' }
          },
          {
            path: 'add-question',
            name: 'AddQuestion',
            component: () => import('../views/teacher/course/AddQuestion.vue'),
            meta: { title: '新增试题' }
          },
          {
            path: 'certificate',
            name: 'CertificateManagement',
            component: CertificateManagement,
            meta: { title: '证书管理' }
          },
          {
            path: 'discussion',
            name: 'DiscussionManagement',
            component: DiscussionManagement,
            meta: { title: '讨论管理' }
          },
          {
            path: 'statistics',
            name: 'StatisticsManagement',
            component: StatisticsManagement,
            meta: { title: '统计管理' }
          },
          {
            path: 'notification',
            name: 'NotificationManagement',
            component: NotificationManagement,
            meta: { title: '通知管理' }
          },
          {
            path: 'management',
            name: 'GeneralManagement',
            component: GeneralManagement,
            meta: { title: '综合管理' }
          }
        ]
      },
      {
        path: 'my-resources',
        name: 'MyResources',
        component: MyResources,
        meta: { title: '我的资源' }
      },
      {
        path: 'student-management',
        name: 'StudentManagement',
        component: StudentManagement,
        meta: { title: '学员管理' }
      },
      {
        path: 'chapter-editor-teacher/:courseId',
        name: 'ChapterEditor',
        component: ChapterEditor,
        meta: { title: '章节编辑' }
      },
      {
        path: 'exam-management',
        name: 'ExamManagement',
        component: ExamManagement,
        meta: { title: '考试管理' },
        redirect: '/teacher/exam-management/question-management',
        children: [
          {
            path: 'question-management',
            name: 'QuestionManagement',
            component: QuestionManagement,
            meta: { title: '试题管理' }
          },
          {
            path: 'exam-library',
            name: 'ExamLibrary',
            component: ExamLibrary,
            meta: { title: '试卷管理' }
          },
          {
            path: 'marking-center',
            name: 'MarkingCenter',
            component: ExamManagement,
            meta: { title: '阅卷中心' },
            redirect: '/teacher/exam-management/marking-center/list',
            children: [
              {
                path: 'list',
                name: 'MarkingList',
                component: MarkingCenter,
                meta: { title: '试卷列表' }
              },
              {
                path: 'student-list/:paperId',
                name: 'StudentList',
                component: StudentList,
                meta: { title: '阅卷页面' }
              },
              {
                path: 'grading/:examId/:studentId',
                name: 'GradingPage',
                component: GradingPage,
                meta: { title: '批阅试卷' }
              }
            ]
          },
          {
            path: 'add',
            name: 'AddExam',
            component: AddExam,
            meta: { title: '添加试卷' }
          },
          {
            path: 'preview',
            name: 'ExamPreview',
            component: () => import('../views/teacher/ExamPages/ExamPreview.vue'),
            meta: { title: '试卷预览' }
          },
          {
            path: 'add-question/:id?',
            name: 'AddQuestionPage',
            component: AddQuestion,
            meta: { title: '添加试题' }
          }
        ]
      },
    ]
  },


  // 帮助中心
  {
    path: '/help-center',
    name: 'HelpCenter',
    component: HelpCenter,
    meta: { title: '帮助中心' }
  },

  // 学习中心（积分中心）
  {
    path: '/learning-center',
    name: 'LearningCenter',
    component: LearningCenter,
    meta: { title: '积分中心', requiresAuth: true }
  },

  // AI伴学
  {
    path: '/ai-companion',
    name: 'AICompanion',
    component: AICompanion,
    meta: { title: 'AI伴学' }
  },

  // 首页与课程
  {
    path: '/service-agreement',
    name: 'ServiceAgreement',
    component: () => import('@/views/ServiceAgreement.vue'),
    meta: {
      title: '服务协议与隐私政策'
    }
  },
  {
    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: '/course/:id/enrolled',
    name: 'CourseDetailEnrolled',
    component: CourseDetailEnrolled,
    meta: { title: '课程详情 - 已报名' }
  },
  {
    path: '/course/:id/exchanged',
    name: 'CourseExchanged',
    component: CourseExchanged,
    meta: { title: '课程详情 - 已兑换', requiresAuth: true }
  },
  {
    path: '/course/study/:id',
    name: 'CourseStudy',
    component: CourseStudy,
    meta: { title: '课程学习', requiresAuth: true }
  },
  {
    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 }
  },

  // 其他功能页面
  {
    path: '/learning-paths',
    name: 'LearningPaths',
    component: LearningPaths,
    meta: { title: '学习路径' }
  },
  {
    path: '/faculty',
    name: 'Faculty',
    component: Faculty,
    meta: { title: '师资力量' }
  },
  {
    path: '/teacher/:id',
    name: 'TeacherDetail',
    component: TeacherDetail,
    meta: { title: '讲师详情' }
  },
  {
    path: '/resources',
    name: 'Resources',
    component: Resources,
    meta: { title: '精选资源' }
  },
  {
    path: '/special-training',
    name: 'SpecialTraining',
    component: SpecialTraining,
    meta: { title: '专题训练' }
  },
  {
    path: '/special-training/:id',
    name: 'SpecialTrainingDetail',
    component: SpecialTrainingDetail,
    meta: { title: '专题训练详情' }
  },
  {
    path: '/activities',
    name: 'Activities',
    component: Activities,
    meta: { title: '全部活动' }
  },
  {
    path: '/activity/:id',
    name: 'ActivityDetail',
    component: ActivityDetail,
    meta: { title: '活动详情' }
  },
  {
    path: '/activity/:id/register',
    name: 'ActivityRegistration',
    component: ActivityRegistration,
    meta: { title: '活动报名' }
  },
  {
    path: '/course/:courseId/exam/:sectionId/notice',
    name: 'ExamNotice',
    component: ExamNotice,
    meta: { title: '考前须知' }
  },
  {
    path: '/course/:courseId/exam/:sectionId',
    name: 'Exam',
    component: Exam,
    meta: { title: '在线考试' }
  },
  {
    path: '/exam/submitted',
    name: 'ExamSubmitted',
    component: ExamSubmitted,
    meta: { title: '考试提交成功' }
  },
  {
    path: '/ai',
    name: 'AI',
    component: () => import('@/views/Ai.vue'),
    meta: { title: 'AI' }
  },
  {
    path: '/ai-demo',
    name: 'AIDemo',
    component: () => import('@/views/DetailView.vue'),
    meta: { title: 'AI演示' }
  },
  {
    path: '/test-sections',
    name: 'TestSections',
    component: TestSections,
    meta: { title: '测试章节API' }
  },
  {
    path: '/local-video-demo',
    name: 'LocalVideoDemo',
    component: LocalVideoDemo,
    meta: { title: '本地视频播放演示' }
  },

  // 404 路由
  {
    path: '/:pathMatch(.*)*',
    name: 'NotFound',
    component: () => import('@/views/NotFound.vue'),
    meta: { title: '页面未找到' }
  }
]

// ========== 创建路由实例 ==========
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) {
    const token = localStorage.getItem('token')
    if (!token) {
      next('/')
      return
    }
  }

  next()
})

export default router