import { PROBLEM_PERMISSION, STORAGE_KEY, USER_TYPE } from "utils/constants"
import storage from "utils/storage"
import type { Profile, User } from "utils/types"
import { getProfile } from "../api"
import { useConfigStore } from "./config"

export const useUserStore = defineStore("user", () => {
  const configStore = useConfigStore()

  const profile = ref<Profile | null>(null)
  const [isFinished] = useToggle(false)
  const user = computed<User | null>(() => profile.value?.user ?? null)
  const isAuthed = computed(() => !!user.value?.email)

  // 演示模式：超管临时把界面伪装成普通学生，方便上课投屏
  const demoMode = ref<boolean>(storage.get(STORAGE_KEY.DEMO_MODE) ?? false)

  // 不受伪装影响的真实身份，只用于判断能否切换演示模式。
  // 若这里用被伪装后的 isSuperAdmin，一进入演示模式入口就消失了，退不出来。
  const realIsSuperAdmin = computed(
    () => user.value?.admin_type === USER_TYPE.SUPER_ADMIN,
  )

  const isAdminRole = computed(
    () =>
      !demoMode.value &&
      (user.value?.admin_type === USER_TYPE.STUDENT_ADMIN ||
        user.value?.admin_type === USER_TYPE.TEACHER_ADMIN ||
        user.value?.admin_type === USER_TYPE.SUPER_ADMIN),
  )
  const isStudentAdmin = computed(
    () => !demoMode.value && user.value?.admin_type === USER_TYPE.STUDENT_ADMIN,
  )
  const isTeacherAdmin = computed(
    () => !demoMode.value && user.value?.admin_type === USER_TYPE.TEACHER_ADMIN,
  )
  const isTeacherOrAbove = computed(
    () =>
      !demoMode.value &&
      (user.value?.admin_type === USER_TYPE.TEACHER_ADMIN ||
        user.value?.admin_type === USER_TYPE.SUPER_ADMIN),
  )
  const isSuperAdmin = computed(() => !demoMode.value && realIsSuperAdmin.value)
  const hasProblemPermission = computed(
    () =>
      !demoMode.value &&
      user.value?.problem_permission !== PROBLEM_PERMISSION.NONE,
  )

  const canToggleDemoMode = computed(() => realIsSuperAdmin.value)

  function toggleDemoMode() {
    demoMode.value = !demoMode.value
    storage.set(STORAGE_KEY.DEMO_MODE, demoMode.value)
  }

  const showSubmissions = computed(() => {
    let flag = configStore.config.submission_list_show_all
    if (isAdminRole.value) flag = true
    return flag
  })

  async function getMyProfile() {
    isFinished.value = false
    const res = await getProfile()
    profile.value = res.data
    isFinished.value = true
    storage.set(STORAGE_KEY.AUTHED, !!user.value?.email)
  }

  function clearProfile() {
    profile.value = null
    demoMode.value = false
    storage.clear()
  }
  return {
    profile,
    isFinished,
    user,
    isAdminRole,
    isStudentAdmin,
    isTeacherAdmin,
    isTeacherOrAbove,
    isSuperAdmin,
    hasProblemPermission,
    demoMode,
    canToggleDemoMode,
    toggleDemoMode,
    isAuthed,
    showSubmissions,
    getMyProfile,
    clearProfile,
  }
})