<template>
  <main>
    <div class="search_container">
      <div class="lang_select_container">
        <v-radio-group row v-model="lang">
          <template v-slot:label>
            <span>VIS TREFF I</span>
          </template>
          <v-radio value="bob,nob" color="primary">
            <template v-slot:label>
              <span>
                begge{{$vuetify.breakpoint.smAndDown ? '' : ' ordbøkene'}}
              </span>
            </template>
          </v-radio>
          <v-radio value="bob" color="primary">
            <template v-slot:label>
              <span>
                {{$vuetify.breakpoint.xs ? 'bm' :  'bokmål (bm)'}}
              </span>
            </template>
          </v-radio>
          <v-radio value="nob" color="primary">
            <template v-slot:label>
              <span>
                {{$vuetify.breakpoint.xs ? 'nn' :  'nynorsk (nn)'}}
              </span>
            </template>
          </v-radio>
        </v-radio-group>
      </div>
      <Autocomplete @submit="select_result" :endpoint="api_pref">
      </Autocomplete>
    </div>
    <div id="spinner" v-if="waiting">
      <v-progress-circular indeterminate color="secondary" size="120"></v-progress-circular>
    </div>
    <SearchResults :hits="search_results"
                    :lang="lang"
                    @article-click="article_link_click"
                    @details-click="details_click"
                    v-if="search_results.length && ! waiting && ! article" />
    <div id="single_article_container" v-if="article">
        <div class="return_to_results" v-if="search_results">
          <router-link :to="article.source" @click.native="return_to_results()">
            <img class="nav_arrow" src="../assets/arrow_left.svg"> Tilbake til søkeresultater
          </router-link>
        </div>
      <Article :key="article_key" :article="article" @article-click="article_link_click" />
    </div>
    <div class="welcome" v-if="! (article || error || search_results.length || waiting)">
      <div class="monthly" :class="$vuetify.breakpoint.name">
        <div>
          <Article :article="monthly_bm" @article-click="article_link_click" />
        </div>
        <div>
          <Article :article="monthly_nn" @article-click="article_link_click" />
        </div>
      </div>
    </div>
    <div class="error" v-if="error">
      <h1>Oooops...</h1>
      {{error}}
    </div>
  </main>
</template>

<script>
import axios from "axios"
import entities from '../utils/entities.js'
import Article from './Article.vue'
import SearchResults from './SearchResults.vue'
import Autocomplete from './Autocomplete.vue'

var api_endpoint = 'https://beta.ordbok.uib.no/api/dict'

axios.interceptors.request.use(function (config) {
    config.headers["x-api-key"] = "ZkYiyRVXxH86ijsvhx3cH4SY5Iik2ijI3BKVJGMm"
    return config;
  }, function (error) {
    return Promise.reject(error);
  });

function navigate_to_article(self, source) {
  axios.get(api_endpoint + '/' + self.$route.params.lang + '/article/' + self.$route.params.id)
  .then(function(response){
    self.article = Object.assign(response.data, {'dictionary': self.$route.params.lang, source: source, results: self.search_results})
    self.search_results = []
    self.error = null
  })
  .catch(function(error){
    if (error.response && error.response.status == 404) {
      self.error = "Vi har ingen artikkel med id " + self.$route.params.id
    } else {
      self.error = "Noe gikk galt..."
      console.log(error)
    }
  })
  .then(function(response){
    self.waiting_for_articles = false
    history.replaceState({article: self.article, search_results: [], lang: self.lang, error: self.error}, '')
    if (source) {
      self.$plausible.trackEvent('internal link incoming', {props: {origin: source}})
    }
  })
}

function navigate_to_search(self, query) {
  axios.get(self.api_pref + 'search?q=' + query)
  .then(function(response){
    self.search_results = response.data
    if (! self.search_results.length) {
      self.error = "Vi fant ingen resultater for '" + decodeURIComponent(query) + "'. (Søkeforlag kommer i en senere oppatering av Ordbøkene)"
    } else {
      self.error = null
    }
  })
  .catch(function(error){
    if (error.response && error.response.status == 400) {
      self.error = "Søkeuttrykket inneholder feil"
    } else if (error.response) {
      self.error = "Noe gikk galt på serversiden"
    } else {
      self.error = "Nettverksproblemer, prøv igjen"
    }
  })
  .then(function(_){
    self.waiting_for_articles = false
    history.replaceState({article: self.article, search_results: self.search_results, lang: self.lang, error: self.error}, '')
  })
}

function navigate_to_word(self, word) {
  axios.get(self.api_pref + 'suggest?q=' + word)
  .then(function(response){
    self.search_results = response.data.filter(result => result.match.length == word.length)
    if (! self.search_results.length) {
      self.error = "Ordet '" + decodeURIComponent(word) + "' finnes ikke i ordbøkene"
    } else {
      self.error = null
    }
  })
  .catch(function(error){
    if (error.response) {
      self.error = "Noe gikk galt på serversiden"
    } else {
      self.error = "Nettverksproblemer, prøv igjen"
    }
  })
  .then(function(_){
    self.waiting_for_articles = false
    history.replaceState({article: self.article, search_results: self.search_results, lang: self.lang, error: self.error}, '')
  })
}

export default {
  name: 'DictionaryView',
  data: function() {
    return {
      article_key: 0,
      search_results: [],
      lang: 'bob,nob',
      waiting_for_articles: true,
      waiting_for_metadata: true,
      article: null,
      error: null,
      monthly_bm: null,
      monthly_nn: null
    }
  },
  computed: {
    waiting: function() {
      return (this.waiting_for_articles || this.waiting_for_metadata) && this.$route.name != 'root'
    },
    api_pref: function() {
      return api_endpoint + '/' + this.lang + '/article/'
    }
  },
  components: {
    Article,
    Autocomplete,
    SearchResults
  },
  methods: {
    select_result: function(event) {
      if(event.articles){
        let source = '/' + this.lang + '/w/' + event.word
        this.$router.push(source)
        this.search_results = event.articles.map(a => Object.assign(a, {source: source}))
        this.article = null
        this.error = null
        history.replaceState({article: this.article, search_results: this.search_results, lang: this.lang, error: this.error}, '')
        this.$plausible.trackEvent('dropdown selection', {props: {query: event.label, match: event.match}})
      }else{
        this.waiting_for_articles = true
        this.article = null
        this.$router.push(`/${this.lang}/search/${event.q}`)
        navigate_to_search(this, event.q)
        this.$plausible.trackEvent('dropdown selection', {props: {query: event.label, match: '<fritekstsøk>'}})
      }
    },
    article_link_click: function(item) {
      if (this.article && this.article.article_id == item.article_id){
        this.article_key++
        history.replaceState({article: this.article, search_results: this.search_results, lang: this.lang, error: this.error}, '')
      }else{
        this.article = null
        this.waiting_for_articles = true
        navigate_to_article(this, item.source)
      }
    },
    details_click: function(item) {
      this.article = item.article
      history.replaceState({article: this.article, search_results: [], lang: this.lang, error: null}, '')
    },
    return_to_results: function() {
      this.article = null
    }
  },
  mounted: function(){
    let self = this
    this.lang = 'bob,nob'

    Promise.all([
      axios.get(api_endpoint + '/bob').then(function(response){
        let concepts = response.data.concepts
        entities.bob = concepts
      }),
      axios.get(api_endpoint + '/nob').then(function(response){
        let concepts = response.data.concepts
        entities.nob = concepts
      })
    ]).then(function(_) {
      self.waiting_for_metadata = false
      if(self.$route.name == 'word') {
        self.lang = self.$route.params.lang
        navigate_to_word(self, self.$route.params.word)
      }
      else if(self.$route.name == 'lookup'){
        navigate_to_article(self, self.$route.params.id)
      }
      else if (self.$route.name == 'search') {
        self.lang = self.$route.params.lang
        navigate_to_search(self, self.$route.params.query)
      }
      else {
        self.lang = self.$route.params.lang || 'bob,nob'
        self.waiting_for_articles = false
        history.replaceState({article: self.article, search_results: self.search_results, lang: self.lang, error: self.error}, '')
      }

      // words of the month
      axios.get(api_endpoint + '/bob/article/5607').then(function(response){
        self.monthly_bm = Object.assign(response.data, {dictionary: 'bob'})
      })

      axios.get(api_endpoint + '/nob/article/78569').then(function(response){
        self.monthly_nn = Object.assign(response.data, {dictionary: 'nob'})
      })
    }).catch(function(_){
      self.error = "Et nettverksproblem hindret lasting av siden. Prøv å laste siden på nytt"
      self.waiting_for_metadata = false
      self.waiting_for_articles = false
    })
  },
  watch: {
    $route() {
      this.$plausible.trackEvent('language', {props: {code: this.$route.params.lang}})
    }
  },
  created: function() {
    let self = this
    window.onpopstate = function (event) {
      if (event.state) {
        self.article = event.state.article
        self.search_results = event.state.search_results
        self.lang = event.state.lang
        self.error = event.state.error
      }
    }

  }
}
</script>

<style>
main {
  flex: 1 0 auto;
  background-color: var(--v-tertiary-base);
  display: flex;
  flex-direction: column;
}

div.welcome {
  flex-grow: 10;
  background-image: url('../assets/books.jpg');
  background-repeat: no-repeat;
}

div.welcome article {
  border-style: none;
}

.search_container {
  background-color: var(--v-tertiary-base);
  padding-top: 1px;
  padding-bottom: 10px;
}

#search_results, #spinner, #single_article_container, div.welcome, div.search_container, .error {
  padding-left: calc((100vw - 1000px) / 2);
  padding-right: calc((100vw - 1000px) / 2);
}

#spinner {
  padding-top: 40px;
}

div.monthly {
  display: flex;
  width: 100%;
}

div.monthly > div {
  flex: 50%;
}

div.monthly.sm, div.monthly.xs {
  flex-direction: column;
}

div.monthly article.bob .dict-label::before {
  content: "fra ";
}

div.monthly article.nob .dict-label::before {
  content: "frå ";
}

.v-label span {
  color: var(--v-primary-base);
}

.lang_select_container {
  padding-left: 15px;
}

li.suggestion {
  font-weight: bold;
  padding-left: 20px;
  padding-top: 5px;
  padding-bottom: 5px;
  border: 0px;
  background-image: none;
}

::selection {
  background: var(--v-secondary-base);
  color: white;
}

.return_to_results {
  display: table-cell;
}

.nav_arrow {
  vertical-align: middle;
}

</style>