<template>
  <v-autocomplete
      v-model="select"
      :loading="loading"
      :items="items"
      :search-input.sync="search"
      item-text="label"
      return-object
      hide-no-data
      hide-details
      label="Søk..."
      solo
      auto-select-first
      placeholder="Søk..."
      ref="autocomplete"
    >
    <template v-slot:item="data">
    {{data.item.label + ' (' + (data.item.lang_set ? Array.from(data.item.lang_set).sort().join(', ') : 'fritekstsøk' ) + ')'}}
    </template>
  </v-autocomplete>
</template>

<script>
  import axios from "axios"

  export default {
    props: {
      endpoint: String
    },
    data: function() {
      return {
        loading: false,
        items: [],
        search: null,
        select: null
      }
    },
    watch: {
      search (val) {
        val && val !== this.select && this.run_query(val)
      },
      select(item) {
        this.$emit('submit', item)
      }
    },
    methods: {
      run_query(q) {
        let self = this
        this.loading = true
        return axios.get(self.endpoint + 'suggest?q=' + encodeURIComponent(q))
                    .then(
                          function(response) {
                              let hits = []
                              response.data.forEach((item, i) => {
                                let match = encodeURIComponent(item.match)

                                if (! hits[0] || hits[0].word != match) {
                                  hits.splice(0, 0, {q: encodeURIComponent(q), lang_set: new Set(), word: match, articles: []})
                                }
                                hits[0].lang_set.add(item.dictionary == 'bob' ? 'bm' : 'nn')
                                hits[0].articles.push(item)
                              });
                              hits.forEach(function (hit) {
                                if (hit.lang_set) {
                                  hit.label = decodeURIComponent(hit.word)
                                }
                              });
                              hits.reverse()
                              hits = hits.slice(0, 5)
                              if (q) {
                                hits.push({q: encodeURIComponent(q), label: q + ' '})
                              }
                              self.items = hits
                              self.loading = false
                            })
      }
    },
  }
</script>


<style scoped>
  div.v-input {
    margin: 0px;
  }
</style>