
<template>
  <div class="tjm_tabsbar_container">
    <el-scrollbar
      ref="scrollContainer"
      :vertical="false"
      class="tjm_tabs-content"
      @wheel.prevent="handleScroll"
    >
      <router-link
        v-for="tag in visitedViews"
        :key="tag.path"
        :data-path="tag.path"
        :class="isActive(tag) ? 'active' : ''"
        :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }"
        class="tags-view-item"
        :style="activeStyle(tag)"
        @click.middle="!isAffix(tag) ? closeSelectedTag(tag) : ''"
        @contextmenu.prevent="openMenu(tag, $event)"
      >
        {{ tag.title }}
        <span v-if="!isAffix(tag)" @click.prevent.stop="closeSelectedTag(tag)">
          <close
            class="el-icon-close"
            style="width: 1em; height: 1em; vertical-align: middle"
          />
        </span>
      </router-link>
    </el-scrollbar>
    <ul
      v-show="visible"
      :style="{ left: left + 'px', top: top + 'px' }"
      class="contextmenu"
    >
      <li v-if="!isAffix(selectedTag)" @click="closeSelectedTag(selectedTag)">
        <close style="width: 1em; height: 1em;" /> 关闭当前
      </li>
       <li @click="closeOthersTags">
        <circle-close style="width: 1em; height: 1em;" /> 关闭其他
      </li>
    </ul>
  </div>
</template>
<script setup>
import { useTabsBarStore } from '@/store/tabsbar.js'
import { usePermissionStore } from '@/store/permission.js'
import { useSettingStore } from '@/store/settings.js'
const routes = computed(() => usePermissionStore().routes)
const route = useRoute()
const router = useRouter()

//==================================================
const visitedViews = computed(() => useTabsBarStore().visitedViews)
const affixTags = ref([])
const visible = ref(false)
const theme = computed(() => useSettingStore().theme)
const top = ref(0)
const left = ref(0)
const selectedTag = ref({})

const { proxy } = getCurrentInstance()
watch(route, () => {
  addTags()
  // moveToCurrentTag()
})
onMounted(() => {
  initTags()
  addTags()
})


function addTags() {
  const { name } = route
  if (name) {
    useTabsBarStore().addView(route)
  }
  return false
}

function initTags() {
  const res = filterAffixTags(routes.value)
  affixTags.value = res
  for (const tag of res) {
    if (tag.name) {
      useTabsBarStore().addVisitedView(tag)
    }
  }
}

function moveToCurrentTag() {
  nextTick(() => {
    for (const r of visitedViews.value) {
      if (r.path === route.path) {
        scrollPaneRef.value.moveToTarget(r)
        if (r.fullPath !== route.fullPath) {
          useTagsViewStore().updateVisitedView(route)
        }
      }
    }
  })
}

function filterAffixTags(routes, basePath = '') {
  let tags = []
  routes.forEach(route => {
    if (route.meta && route.meta.affix) {
      const tagPath = getNormalPath(basePath + '/' + route.path)
      tags.push({
        fullPath: tagPath,
        path: tagPath,
        name: route.name,
        meta: { ...route.meta }
      })
    }
    if (route.children) {
      const tempTags = filterAffixTags(route.children, route.path)
      if (tempTags.length >= 1) {
        tags = [...tags, ...tempTags]
      }
    }
  })
  return tags
}


function getNormalPath(p) {
  if (p.length === 0 || !p || p == 'undefined') {
    return p
  }
  let res = p.replace('//', '/')
  if (res[res.length - 1] === '/') {
    return res.slice(0, res.length - 1)
  }
  return res
}



function closeMenu() {
  visible.value = false
}

function handleScroll() {
  closeMenu()
}
watch(visible, (value) => {
  if (value) {
    document.body.addEventListener('click', closeMenu)
  } else {
    document.body.removeEventListener('click', closeMenu)
  }
})

function openMenu(tag, e) {
  const menuMinWidth = 105
  const offsetLeft = proxy.$el.getBoundingClientRect().left 
  const offsetWidth = proxy.$el.offsetWidth // container width
  const maxLeft = offsetWidth - menuMinWidth // left boundary
  const l = e.clientX - offsetLeft + 15 // 15: margin right

  if (l > maxLeft) {
    left.value = maxLeft
  } else {
    left.value = l
  }
  
  top.value = 15
  visible.value = true
  selectedTag.value = tag
 
}


function isActive(r) {
  return r.path === decodeURIComponent(route.path)
}



function activeStyle(tag) {
  if (!isActive(tag)) return {}
  return {
    'background-color': theme.value,
    'border-color': theme.value
  }
}

function isAffix(tag) {
  // if(tag.name=="Index") return true
  return tag.meta && tag.meta.affix
}

function closeSelectedTag(view) {
  useTabsBarStore()
    .delView(view)
    .then(({ visitedViews }) => {
      if (isActive(view)) {
        toLastView(visitedViews, view)
      }
    })
}
function closeOthersTags() {
  useTabsBarStore().delOthersViews(selectedTag.value).then(({visitedViews})=>{
     toLastView(visitedViews, selectedTag.value)
  })
}
function toLastView(visitedViews, view) {
  const latestView = visitedViews.slice(-1)[0]
  if (latestView) {
    router.push(latestView.fullPath)
  } else {
    if (view.name === 'Index') {
      router.replace({ path: '/redirect' + view.fullPath })
    } else {
      router.push('/')
    }
  }
}
</script>
 
<style lang="scss" scoped>
.tjm_tabsbar_container {
  position: relative;
  height: $base-tabsbar-height;
  user-select: none;
  border-top: 1px solid #f6f6f6;
  display: flex;
  align-items: center;
  padding-right: $base-padding;
  padding-left: $base-padding;
  background: $base-color-white;
  white-space: nowrap;
  .tjm_tabs-content {
    height: 40px;
    width: 100%;
    // display: flex;
    // align-items: center;
    .tags-view-item {
      display: inline-block;
      position: relative;
      cursor: pointer;
      height: 26px;
      line-height: 26px;
      border: 1px solid #d8dce5;
      color: #495060;
      background: #fff;
      padding: 0 8px;
      font-size: 12px;
      margin-left: 5px;
      margin-top: 4px;
      text-decoration: none;
      &:hover {
        border: 1px solid #409eff;
      }
      &:first-of-type {
        margin-left: 15px;
      }
      &:last-of-type {
        margin-right: 15px;
      }
      &.active {
        background-color: #42b983;
        color: #fff;
        border-color: #42b983;

        &::before {
          content: '';
          background: #fff;
          display: inline-block;
          width: 8px;
          height: 8px;
          border-radius: 50%;
          position: relative;
          margin-right: 5px;
        }
      }
    }
  }
   .contextmenu {
      margin: 0;
      background: #fff;
      position: absolute;
      z-index: 3000;
      list-style-type: none;
      padding: 5px 0;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 400;
      color: #333;
      box-shadow: 2px 2px 3px 0 rgba(0, 0, 0, 0.3);
      li {
        margin: 0;
        padding: 7px 16px;
        cursor: pointer;
        &:hover {
          background: #eee;
        }
      }
    }
}
</style>
<style lang="scss">
.tjm_tabs-content {
  a {
    text-decoration: none;
  }
  .router-link-active {
    text-decoration: none;
  }
  .el-icon-close {
    width: 16px;
    height: 16px;
    vertical-align: 2px;
    border-radius: 50%;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    transform-origin: 100% 50%;
    &:before {
      transform: scale(0.6);
      display: inline-block;
      vertical-align: -3px;
    }
    &:hover {
      background-color: #b4bccc;
      color: #fff;
      width: 12px !important;
      height: 12px !important;
    }
  }
}
</style>
