OpenIsle/frontend_nuxt/components/HeaderComponent.vue

<template>
  <header class="header">
    <div class="header-content">
      <div class="header-content-left">
        <div v-if="showMenuBtn" class="menu-btn-wrapper">
          <button class="menu-btn" ref="menuBtn" @click="$emit('toggle-menu')">
            <i class="fas fa-bars"></i>
          </button>
          <span v-if="isMobile && unreadCount > 0" class="menu-unread-dot"></span>
        </div>
        <NuxtLink class="logo-container" to="/" replace @click="handleLogoClick">
          <img
            alt="OpenIsle"
            src="https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/image.png"
            width="60"
            height="60"
          />
          <div class="logo-text">OpenIsle</div>
        </NuxtLink>
      </div>

      <ClientOnly>
        <div v-if="isLogin" class="header-content-right">
          <div v-if="isMobile" class="search-icon" @click="search">
            <i class="fas fa-search"></i>
          </div>
          <DropdownMenu ref="userMenu" :items="headerMenuItems">
            <template #trigger>
              <div class="avatar-container">
                <img class="avatar-img" :src="avatar" alt="avatar" />
                <i class="fas fa-caret-down dropdown-icon"></i>
              </div>
            </template>
          </DropdownMenu>
        </div>

        <div v-else class="header-content-right">
          <div v-if="isMobile" class="search-icon" @click="search">
            <i class="fas fa-search"></i>
          </div>
          <div class="header-content-item-main" @click="goToLogin">登录</div>
          <div class="header-content-item-secondary" @click="goToSignup">注册</div>
        </div>
      </ClientOnly>

      <SearchDropdown ref="searchDropdown" v-if="isMobile && showSearch" @close="closeSearch" />
    </div>
  </header>
</template>

<script setup>
import { ClientOnly } from '#components'
import { computed, nextTick, ref, watch } from 'vue'
import { useRouter } from 'vue-router'
import DropdownMenu from '~/components/DropdownMenu.vue'
import SearchDropdown from '~/components/SearchDropdown.vue'
import { authState, clearToken, loadCurrentUser } from '~/utils/auth'
import { fetchUnreadCount, notificationState } from '~/utils/notification'
import { useIsMobile } from '~/utils/screen'
const props = defineProps({
  showMenuBtn: {
    type: Boolean,
    default: true,
  },
})

const isLogin = computed(() => authState.loggedIn)
const isMobile = useIsMobile()
const unreadCount = computed(() => notificationState.unreadCount)
const router = useRouter()
const avatar = ref('')
const showSearch = ref(false)
const searchDropdown = ref(null)
const userMenu = ref(null)
const menuBtn = ref(null)

const handleLogoClick = (event) => {
  if (router.currentRoute.value.fullPath === '/') {
    event.preventDefault()
    window.dispatchEvent(new Event('refresh-home'))
  }
}
const search = () => {
  showSearch.value = true
  nextTick(() => {
    searchDropdown.value.toggle()
  })
}
const closeSearch = () => {
  nextTick(() => {
    showSearch.value = false
  })
}
const goToLogin = () => {
  navigateTo('/login', { replace: true })
}
const goToSettings = () => {
  navigateTo('/settings', { replace: true })
}
const goToProfile = async () => {
  if (!authState.loggedIn) {
    navigateTo('/login', { replace: true })
    return
  }
  let id = authState.username || authState.userId
  if (!id) {
    const user = await loadCurrentUser()
    if (user) {
      id = user.username || user.id
    }
  }
  if (id) {
    navigateTo(`/users/${id}`, { replace: true })
  }
}
const goToSignup = () => {
  navigateTo('/signup', { replace: true })
}
const goToLogout = () => {
  clearToken()
  navigateTo('/login', { replace: true })
}

const headerMenuItems = computed(() => [
  { text: '设置', onClick: goToSettings },
  { text: '个人主页', onClick: goToProfile },
  { text: '退出', onClick: goToLogout },
])

onMounted(async () => {
  const updateAvatar = async () => {
    if (authState.loggedIn) {
      const user = await loadCurrentUser()
      if (user && user.avatar) {
        avatar.value = user.avatar
      }
    }
  }
  const updateUnread = async () => {
    if (authState.loggedIn) {
      await fetchUnreadCount()
    } else {
      notificationState.unreadCount = 0
    }
  }

  await updateAvatar()
  await updateUnread()

  watch(
    () => authState.loggedIn,
    async () => {
      await updateAvatar()
      await updateUnread()
    },
  )

  watch(
    () => router.currentRoute.value.fullPath,
    () => {
      if (userMenu.value) userMenu.value.close()
      showSearch.value = false
    },
  )
})
</script>

<style scoped>
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  background-color: var(--background-color-blur);
  backdrop-filter: blur(10px);
  color: var(--header-text-color);
  border-bottom: 1px solid var(--header-border-color);
}

.logo-container {
  display: flex;
  align-items: center;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.header-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  max-width: var(--page-max-width);
}

.header-content-left {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.header-content-right {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 20px;
}

.menu-btn {
  font-size: 24px;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  opacity: 0.4;
  margin-right: 10px;
}

.menu-btn-wrapper {
  position: relative;
  display: inline-block;
}

.menu-unread-dot {
  position: absolute;
  top: 0;
  right: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #ff4d4f;
}

.menu-btn:hover {
  opacity: 0.8;
}

.header-content-item-main {
  background-color: var(--primary-color);
  color: white;
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
}

.header-content-item-main:hover {
  background-color: var(--primary-color-hover);
}

.header-content-item-secondary {
  color: var(--primary-color);
  text-decoration: underline;
  cursor: pointer;
}

.avatar-container {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.avatar-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: lightgray;
  object-fit: cover;
}

.dropdown-icon {
  margin-left: 5px;
}

.dropdown-item {
  padding: 8px 16px;
  white-space: nowrap;
}

.dropdown-item:hover {
  background-color: var(--menu-selected-background-color);
}

.search-icon {
  font-size: 18px;
  cursor: pointer;
}

@media (max-width: 1200px) {
  .header-content {
    padding-left: 15px;
    padding-right: 15px;
    width: calc(100% - 30px);
  }
}

@media (max-width: 768px) {
  .header-content-item-secondary {
    display: none;
  }

  .logo-text {
    display: none;
  }
}
</style>