<template lang="pug">
  .nav-item
    p.control(v-bind:class='{ "is-loading": searchload > 0 }')
      input.input#search-input(type='text', v-model='searchq', autofocus, @keyup.esc='closeSearch', @keyup.down='moveDownSearch', @keyup.up='moveUpSearch', @keyup.enter='moveSelectSearch', debounce='400', v-bind:placeholder='$t("search.placeholder")')

    transition(name='searchresults')
      .searchresults(v-show='searchactive', v-cloak)
        p.searchresults-label {{ $t('search.results') }}
        ul.searchresults-list
          li(v-if='searchres.length === 0')
            a: em {{ $t('search.nomatch') }}
          li(v-for='sres in searchres', v-bind:class='{ "is-active": searchmovekey === "res." + sres.entryPath }')
            a(v-bind:href='"/" + sres.entryPath') {{ sres.title }}
        p.searchresults-label(v-if='searchsuggest.length > 0') {{ $t('search.didyoumean') }}
        ul.searchresults-list(v-if='searchsuggest.length > 0')
          li(v-for='sug in searchsuggest', v-bind:class='{ "is-active": searchmovekey === "sug." + sug }')
            a(v-on:click='useSuggestion(sug)') {{ sug }}
</template>

<script>
  import * as $ from 'jquery'

  export default {
    data () {
      return {
        searchq: '',
        searchres: [],
        searchsuggest: [],
        searchload: 0,
        searchactive: false,
        searchmoveidx: 0,
        searchmovekey: '',
        searchmovearr: []
      }
    },
    watch: {
      searchq: function (val, oldVal) {
        let self = this
        self.searchmoveidx = 0
        if (val.length >= 3) {
          self.searchactive = true
          self.searchload++
          socket.emit('search', { terms: val }, (data) => {
            self.searchres = data.match
            self.searchsuggest = data.suggest
            self.searchmovearr = self._.concat([], self.searchres, self.searchsuggest)
            if (self.searchload > 0) { self.searchload-- }
          })
        } else {
          self.searchactive = false
          self.searchres = []
          self.searchsuggest = []
          self.searchmovearr = []
          self.searchload = 0
        }
      },
      searchmoveidx: function (val, oldVal) {
        if (val > 0) {
          this.searchmovekey = (this.searchmovearr[val - 1])
            ? 'res.' + this.searchmovearr[val - 1].entryPath
            : 'sug.' + this.searchmovearr[val - 1]
        } else {
          this.searchmovekey = ''
        }
      }
    },
    methods: {
      useSuggestion: function (sug) {
        this.searchq = sug
      },
      closeSearch: function() {
        this.searchq = ''
      },
      moveSelectSearch: function () {
        if (this.searchmoveidx < 1) { return }
        let i = this.searchmoveidx - 1

        if (this.searchmovearr[i]) {
          window.location.assign('/' + this.searchmovearr[i].entryPath)
        } else {
          this.searchq = this.searchmovearr[i]
        }
      },
      moveDownSearch: function () {
        if (this.searchmoveidx < this.searchmovearr.length) {
          this.searchmoveidx++
        }
      },
      moveUpSearch: function () {
        if (this.searchmoveidx > 0) {
          this.searchmoveidx--
        }
      }
    },
    mounted: function () {
      let self = this
      $('main').on('click', self.closeSearch)
    }
  }
</script>
