<template>
  <main>
    <div class="search_container">
      <div class="lang_select_container">
        <v-radio-group row v-model="lang" @change="update_lang_form">
          <template v-slot:label tabindex="1">
            <span aria-label="Vis resultat i begge ordbøkene eller bruk radioknapp for bokmålsordboka eller radioknapp for nynorskordboka">VIS</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>
                {{$vuetify.breakpoint.xs ? 'nn' :  'nynorsk (nn)'}}
              </span>
            </template>
          </v-radio>
        </v-radio-group>
      </div>
      <Autocomplete @submit="select_result" :api="get_oda_api">
      </Autocomplete>
    </div>
    <div id="spinner" v-if="waiting">
      <v-progress-circular indeterminate color="secondary" size="120"></v-progress-circular>
    </div>
    <SearchResults :hits="search_results"
                    :lang="lang"
                    :key="lang"
                    @article-click="article_link_click"
                    @details-click="details_click"
                    v-if="search_results.length && ! waiting && ! article" />
    <div id="single_article_container" v-if="article">
        <div class="return_to_results" v-if="search_results && search_results.length">
          <router-link :to="article.source" @click.native="return_to_results()">
            <v-icon class="nav_arrow">arrow_left</v-icon>Tilbake til {{article.dictionary == 'bob' ? 'søkeresultater' : 'søkjeresultat'}}
          </router-link>
        </div>
      <Article :key="article_key" :article="article" @article-click="article_link_click" />
    </div>
    <div class="welcome" v-if="! (article || error || search_results.length || waiting)">
      <div class="monthly" :class="$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>Ingen treff</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'

import { setup } from 'axios-cache-adapter'

const oda_api = setup({
  baseURL: 'https://oda.uib.no/opal/api/',
  cache: {
    maxAge: 15 * 60 * 1000,
    exclude: {
      query: false
    }
  }
})


var api_endpoint = process.env.VUE_APP_API_PREFIX + '/api/dict'

var oda_dev = 'https://oda.uib.no/opal/dev'

function compare_by_hgno(lemma_text) {
  return function(art1, art2) {
    let lemma1 = art1.lemmas.filter(lemma => lemma.lemma == lemma_text)[0]
    let lemma2 = art2.lemmas.filter(lemma => lemma.lemma == lemma_text)[0]

    return lemma1.hgno - lemma2.hgno
  }
}

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

function navigate_to_article(self, source) {
  let config = {headers: {}}
  if ((self.$route.query.nocache || '').toLowerCase() == 'true') {
    config.headers.cachebuster = Date.now()
  }
  axios.get(oda_dev + '/' + self.$route.params.lang + '/article/' + self.$route.params.id, config)
  .then(function(response){
    self.article = Object.assign(response.data, {'dictionary': self.$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.$route.params.id
    } else {
      self.error = "Noe gikk galt..."
    }
  })
  .then(function(response){
    self.waiting_for_articles = false
    history.replaceState({article: self.article, search_results: [], lang: self.lang, error: self.error}, '')
    if (source) {
      self.$plausible.trackEvent('internal link incoming', {props: {origin: source}})
    }
  })
}

function navigate_to_search(self, query) {
  axios.get(self.api_old + 'search?q=' + query)
  .then(function(response){
    self.search_results = response.data
    if (! self.search_results.length) {
      self.error = "Søk på «" + decodeURIComponent(query) + "» gir ingen treff i ordbøkene. Søk med * inne i ordet dersom du er usikker på skrivemåten. Bruk knappen «begge ordbøkene» om du har søkt i feil ordbok."
    } 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_old + 'suggest?q=' + word)
  .then(function(response){
    self.search_results = response.data.filter(result => result.match == word).sort(compare_by_hgno(word))
    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,
      event: null
    }
  },
  computed: {
    waiting: function() {
      return (this.waiting_for_articles || this.waiting_for_metadata) && this.$route.name != 'root'
    },
    api_pref: function() {
      return oda_dev + '/' + this.lang + '/article/'
    },
    api_old: function() {
      return api_endpoint + '/' + this.lang + '/article/'
    },
    get_oda_api: function() {
      return oda_api
    },
  },
  components: {
    Article,
    Autocomplete,
    SearchResults
  },
  methods: {
    select_result: function (event) {
        this.event = event
        if (event.article_ids) {
          let source = '/' + this.lang + '/w/' + event.match
          this.$router.push(source)
          let unwrapped = []
          for (const d in event.article_ids) {
            if (d == this.lang || this.lang == "bob,nob") {
              event.article_ids[d].forEach(i => unwrapped.push({
                dictionary: d,
                id: i
              }))
            }

          }

          let self = this
          Promise.all(unwrapped.map((article) => {
              return axios.get(`${oda_dev}/${article.dictionary}/article/${article.id}.json`)

            }))
            .then((response) => {
              self.search_results = response.map((element, index) => {
                return Object.assign(element.data, {
                  source: source,
                  match: event.match,
                  dictionary: unwrapped[index].dictionary
                })
              })
              self.article = null
              self.error = null

            })
            .catch(error => {
              self.search_results = []
              if (error.response) {
                self.error = "Noe gikk galt på serversiden"
              } else {
                self.error = "Nettverksproblemer, prøv igjen"
              }
            })
            .then(() => {
              self.$plausible.trackEvent('dropdown selection', {
                props: {
                  query: event.q,
                  match: event.match
                }
              })
              self.waiting_for_articles = false
              history.replaceState({
                article: self.article,
                search_results: self.search_results,
                lang: self.lang,
                error: self.error
              }, '')
            })
        } else {
          this.waiting_for_articles = true
          this.article = null
          this.$router.push(`/${this.lang}/search/${event.q}`)
          navigate_to_search(this, event.q)
          this.$plausible.trackEvent('dropdown selection', {
            props: {
              query: event.q,
              match: '<fritekstsøk>'
            }
          })
        }
      },
      update_lang_form: function (event) {
        this.lang = event
        if (this.event && !this.article) {
          this.event.articles = null
          this.select_result(this.event)
        }
      },
    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(oda_dev + '/bob/article/5607.json').then(function(response){
        self.monthly_bm = Object.assign(response.data, {dictionary: 'bob'})
      })

      axios.get(oda_dev + '/nob/article/78569.json').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 ";
}

div.monthly details, div.monthly h3 {
  display: none;
}

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

.lang_select_container {
  padding-left: 10px;
}

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;
}

.return_to_results a {
  color: var(--v-primary-base) !important;
}

.nav_arrow {
  vertical-align: top !important;
  color: var(--v-primary-base) !important;
}

.choose > .nav_arrow {
  vertical-align: -30% !important;
}

</style>