{% extends "base.html" %}

{% block content %}
  <form action="https://duckduckgo.com/" method="get" id="form-search">
    <input type="hidden" name="sites" value="{{ settings.base_url }}">
    <label for="input-search">Termes de votre recherche :</label>
    <fieldset role="group">
      <input id="input-search" type="search" name="q" aria-describedby="indexation-infos" required>
      <input type="submit" value="Chercher">
    </fieldset>
    <p id="indexation-infos" class="centered" role="status"><mark>Les résultats sont affichés immédiatement ci-dessous ↓</mark></p>
  </form>
  <div id="search-results"></div>

  <template id="search-result">
    <div class="aside">
      <hgroup>
        <h2><a href="${numero_url}">${ numero_title_f }</a></h2>
        <p class="muted"><small>${ numero_date }</small></p>
      </hgroup>
      <div class="article-body">
        <h3><a href="${ url }">${ title_f }</a> <nobr class="muted"><small>(${ date })</small></nobr></h3>
        <div class="article-abstract">${ content }</div>
        <div class="article-nav">
          <a href="${ url }" role="button" class="secondary">Lire l’article</a>
        </div>
      </div>
    </div>
  </template>
{% endblock content %}

{% block extra_body %}
  {# djlint:off #}
  <script id="search-index" type="application/json">{{ search_index }}</script>
  {# djlint:on #}
  <!-- French stopwords from https://github.com/stopwords-iso/stopwords-fr -->
  <script id="search-stop-words" type="application/json">
    [
      "a", "abord", "absolument", "afin", "ah", "ai", "aie", "aient", "aies",
      "ailleurs", "ainsi", "ait", "allaient", "allo", "allons", "allô",
      "alors", "anterieur", "anterieure", "anterieures", "apres", "après",
      "as", "assez", "attendu", "au", "aucun", "aucune", "aucuns", "aujourd",
      "aujourd'hui", "aupres", "auquel", "aura", "aurai", "auraient", "aurais",
      "aurait", "auras", "aurez", "auriez", "aurions", "aurons", "auront",
      "aussi", "autant", "autre", "autrefois", "autrement", "autres", "autrui",
      "aux", "auxquelles", "auxquels", "avaient", "avais", "avait", "avant",
      "avec", "avez", "aviez", "avions", "avoir", "avons", "ayant", "ayez",
      "ayons", "b", "bah", "bas", "basee", "bat", "beau", "beaucoup", "bien",
      "bigre", "bon", "boum", "bravo", "brrr", "c", "car", "ce", "ceci",
      "cela", "celle", "celle-ci", "celle-là", "celles", "celles-ci",
      "celles-là", "celui", "celui-ci", "celui-là", "celà", "cent",
      "cependant", "certain", "certaine", "certaines", "certains", "certes",
      "ces", "cet", "cette", "ceux", "ceux-ci", "ceux-là", "chacun", "chacune",
      "chaque", "cher", "chers", "chez", "chiche", "chut", "chère", "chères",
      "ci", "cinq", "cinquantaine", "cinquante", "cinquantième", "cinquième",
      "clac", "clic", "combien", "comme", "comment", "comparable",
      "comparables", "compris", "concernant", "contre", "couic", "crac", "d",
      "da", "dans", "de", "debout", "dedans", "dehors", "deja", "delà",
      "depuis", "dernier", "derniere", "derriere", "derrière", "des",
      "desormais", "desquelles", "desquels", "dessous", "dessus", "deux",
      "deuxième", "deuxièmement", "devant", "devers", "devra", "devrait",
      "different", "differentes", "differents", "différent", "différente",
      "différentes", "différents", "dire", "directe", "directement", "dit",
      "dite", "dits", "divers", "diverse", "diverses", "dix", "dix-huit",
      "dix-neuf", "dix-sept", "dixième", "doit", "doivent", "donc", "dont",
      "dos", "douze", "douzième", "dring", "droite", "du", "duquel", "durant",
      "dès", "début", "désormais", "e", "effet", "egale", "egalement",
      "egales", "eh", "elle", "elle-même", "elles", "elles-mêmes", "en",
      "encore", "enfin", "entre", "envers", "environ", "es", "essai", "est",
      "et", "etant", "etc", "etre", "eu", "eue", "eues", "euh", "eurent",
      "eus", "eusse", "eussent", "eusses", "eussiez", "eussions", "eut", "eux",
      "eux-mêmes", "exactement", "excepté", "extenso", "exterieur", "eûmes",
      "eût", "eûtes", "f", "fais", "faisaient", "faisant", "fait", "faites",
      "façon", "feront", "fi", "flac", "floc", "fois", "font", "force",
      "furent", "fus", "fusse", "fussent", "fusses", "fussiez", "fussions",
      "fut", "fûmes", "fût", "fûtes", "g", "gens", "h", "ha", "haut", "hein",
      "hem", "hep", "hi", "ho", "holà", "hop", "hormis", "hors", "hou", "houp",
      "hue", "hui", "huit", "huitième", "hum", "hurrah", "hé", "hélas", "i",
      "ici", "il", "ils", "importe", "j", "je", "jusqu", "jusque", "juste",
      "k", "l", "la", "laisser", "laquelle", "las", "le", "lequel", "les",
      "lesquelles", "lesquels", "leur", "leurs", "longtemps", "lors",
      "lorsque", "lui", "lui-meme", "lui-même", "là", "lès", "m", "ma",
      "maint", "maintenant", "mais", "malgre", "malgré", "maximale", "me",
      "meme", "memes", "merci", "mes", "mien", "mienne", "miennes", "miens",
      "mille", "mince", "mine", "minimale", "moi", "moi-meme", "moi-même",
      "moindres", "moins", "mon", "mot", "moyennant", "multiple", "multiples",
      "même", "mêmes", "n", "na", "naturel", "naturelle", "naturelles", "ne",
      "neanmoins", "necessaire", "necessairement", "neuf", "neuvième", "ni",
      "nombreuses", "nombreux", "nommés", "non", "nos", "notamment", "notre",
      "nous", "nous-mêmes", "nouveau", "nouveaux", "nul", "néanmoins", "nôtre",
      "nôtres", "o", "oh", "ohé", "ollé", "olé", "on", "ont", "onze",
      "onzième", "ore", "ou", "ouf", "ouias", "oust", "ouste", "outre",
      "ouvert", "ouverte", "ouverts", "o|", "où", "p", "paf", "pan", "par",
      "parce", "parfois", "parle", "parlent", "parler", "parmi", "parole",
      "parseme", "partant", "particulier", "particulière", "particulièrement",
      "pas", "passé", "pendant", "pense", "permet", "personne", "personnes",
      "peu", "peut", "peuvent", "peux", "pff", "pfft", "pfut", "pif", "pire",
      "pièce", "plein", "plouf", "plupart", "plus", "plusieurs", "plutôt",
      "possessif", "possessifs", "possible", "possibles", "pouah", "pour",
      "pourquoi", "pourrais", "pourrait", "pouvait", "prealable",
      "precisement", "premier", "première", "premièrement", "pres", "probable",
      "probante", "procedant", "proche", "près", "psitt", "pu", "puis",
      "puisque", "pur", "pure", "q", "qu", "quand", "quant", "quant-à-soi",
      "quanta", "quarante", "quatorze", "quatre", "quatre-vingt", "quatrième",
      "quatrièmement", "que", "quel", "quelconque", "quelle", "quelles",
      "quelqu'un", "quelque", "quelques", "quels", "qui", "quiconque",
      "quinze", "quoi", "quoique", "r", "rare", "rarement", "rares",
      "relative", "relativement", "remarquable", "rend", "rendre", "restant",
      "reste", "restent", "restrictif", "retour", "revoici", "revoilà", "rien",
      "s", "sa", "sacrebleu", "sait", "sans", "sapristi", "sauf", "se", "sein",
      "seize", "selon", "semblable", "semblaient", "semble", "semblent",
      "sent", "sept", "septième", "sera", "serai", "seraient", "serais",
      "serait", "seras", "serez", "seriez", "serions", "serons", "seront",
      "ses", "seul", "seule", "seulement", "si", "sien", "sienne", "siennes",
      "siens", "sinon", "six", "sixième", "soi", "soi-même", "soient", "sois",
      "soit", "soixante", "sommes", "son", "sont", "sous", "souvent", "soyez",
      "soyons", "specifique", "specifiques", "speculatif", "stop",
      "strictement", "subtiles", "suffisant", "suffisante", "suffit", "suis",
      "suit", "suivant", "suivante", "suivantes", "suivants", "suivre",
      "sujet", "superpose", "sur", "surtout", "t", "ta", "tac", "tandis",
      "tant", "tardive", "te", "tel", "telle", "tellement", "telles", "tels",
      "tenant", "tend", "tenir", "tente", "tes", "tic", "tien", "tienne",
      "tiennes", "tiens", "toc", "toi", "toi-même", "ton", "touchant",
      "toujours", "tous", "tout", "toute", "toutefois", "toutes", "treize",
      "trente", "tres", "trois", "troisième", "troisièmement", "trop", "très",
      "tsoin", "tsouin", "tu", "té", "u", "un", "une", "unes", "uniformement",
      "unique", "uniques", "uns", "v", "va", "vais", "valeur", "vas", "vers",
      "via", "vif", "vifs", "vingt", "vivat", "vive", "vives", "vlan", "voici",
      "voie", "voient", "voilà", "voire", "vont", "vos", "votre", "vous",
      "vous-mêmes", "vu", "vé", "vôtre", "vôtres", "w", "x", "y", "z", "zut",
      "à", "â", "ça", "ès", "étaient", "étais", "était", "étant", "état",
      "étiez", "étions", "été", "étée", "étées", "étés", "êtes", "être", "ô"
    ]
  </script>
  <script type="text/javascript">
    /* See:
     * https://gomakethings.com/how-to-create-a-search-page-for-a-static-website-with-vanilla-js/
     * https://gomakethings.com/how-to-update-the-url-of-a-page-without-causing-a-reload-using-vanilla-javascript/
     */
    ;
    (function() {
      // Retrieving the search index and stopwords from JSON.
      // See https://v8.dev/blog/cost-of-javascript-2019#json
      let searchIndex = JSON.parse(
        document.getElementById('search-index').textContent
      )
      let stopWords = JSON.parse(
        document.getElementById('search-stop-words').textContent
      )

      // Get the DOM elements
      let form = document.querySelector('#form-search')
      let input = document.querySelector('#input-search')
      let resultList = document.querySelector('#search-results')
      let searchStatus = document.querySelector('[role="status"] mark')
      let searchResultTemplate = document.querySelector('#search-result')

      // Make sure required content exists
      if (
        !form ||
        !input ||
        !resultList ||
        !searchStatus ||
        !searchIndex ||
        !stopWords ||
        !searchResultTemplate
      )
        return

      // Create a submit handler
      form.addEventListener('submit', function(event) {
        event.preventDefault()
        search(input.value)
      })

      // Create a typeahead handler
      form.addEventListener('keyup', function(event) {
        search(input.value)
      })

      // Create a reset handler
      form.addEventListener('reset', function() {
        search('')
        searchStatus.innerHTML = ''
      })

      // Check for query strings onload
      onload()

      /**
       * If there's a query string search term, search it on page load
       */
      function onload() {
        let query = new URLSearchParams(window.location.search).get('q')
        if (!query) return
        input.value = query
        search(query)
      }

      /**
       * Search for matches
       * @param  {String} query The term to search for
       */
      function search(query) {
        // Create a regex for each query
        let regMap = query
          .toLowerCase()
          .split(' ')
          .filter(function(word) {
            return word.length && !stopWords.includes(word)
          })
          .map(function(word) {
            return new RegExp(word, 'i')
          })

        // Get and sort the results
        let results = searchIndex
          .reduce(function(results, article, index) {
            // Setup priority count
            let priority = 0

            // Assign priority
            for (let reg of regMap) {
              if (reg.test(article.numero_title_f)) {
                priority += 500
              }
              if (reg.test(article.title)) {
                priority += 100
              }
              let occurences = article.content.match(reg)
              if (occurences) {
                priority += occurences.length
              }
            }

            // If any matches, push to results
            if (priority > 0) {
              results.push({
                priority: priority,
                article: article,
              })
            }

            return results
          }, [])
          .sort(function(article1, article2) {
            return article2.priority - article1.priority
          })

        results = [
          ...new Map(results.map(item => [item['article']['title'], item])).values()
        ]

        // Display the results
        showResults(query, results, regMap)

        // Update the URL
        updateURL(query)
      }

      /**
       * Show the search results in the UI
       * @param  {Array}  results The results to display
       * @param  {List}  regMap Regular expressions for the highlights
       */
      function showResults(query, results, regMap) {
        let status = 'Aucune occurence n’a été trouvée.'
        let searchResults = ''
        if (results.length) {
          const plural = results.length > 1 ? 's' : ''
          status = `${results.length} section${plural} trouvée${plural} !`
          searchResults = results
            .map(function(result) {
              let [url, anchor] = result.article.url.split('#') // Happens for contenus add.
              // We avoid length > 1, because text fragment will only match the first term.
              if (!anchor && regMap.length === 1) {
                anchor = `:~:text=${regMap[0].source}`
              }
              anchor = anchor ? `#${anchor}` : ''
              return interpolate(searchResultTemplate.innerHTML, {
                url: `${url}?q=${query}${anchor}`,
                title_f: highlightText(result.article.title, regMap),
                date: result.article.date,
                content: highlightText(result.article.content, regMap),
                numero_title_f: highlightText(result.article.numero_title_f, regMap),
                numero_url: result.article.numero_url,
                numero_date: result.article.numero_date,
              })
            })
            .join('')
        }
        searchStatus.innerHTML = status
        resultList.innerHTML = searchResults
      }

      /**
       * Get a template from a string
       * https://stackoverflow.com/a/41015840
       * https://gomakethings.com/html-templates-with-vanilla-javascript/
       * @param  {String} str    The string to interpolate
       * @param  {Object} params The parameters
       * @return {String}        The interpolated string
       */
      function interpolate(str, params) {
        let names = Object.keys(params)
        let vals = Object.values(params)
        return new Function(...names, `return \`${str}\``)(...vals)
      }

      /**
       * Highlight the text in the UI
       * @param  {String}  text The content to highlight
       * @param  {List}  regMap Regular expressions for the highlights
       */
      function highlightText(text, regMap) {
        // TODO: deal with close matches when multiple words are looked for,
        // it does not look trivial because you have to memorize positions
        // then create extracts.
        // For instance: `microsoft github`
        const extractBoundariesSize = 100
        const textLength = text.length
        let extracts = []
        for (let reg of regMap) {
          const index = text.search(reg)
          if (index === -1) {
            continue
          }
          let extract = text.substring(
            index - extractBoundariesSize,
            index + reg.source.length + extractBoundariesSize
          )
          // TODISCUSS: we replace with the source but in case there is
          // an uppercase letter it will disappear from the extract
          // (is that confusing or closer to what is expected?)
          extract = extract.replace(reg, `<mark>${reg.source}</mark>`)
          const prefixEllipsis = index - extractBoundariesSize >= 0 ? '…' : ''
          const suffixEllipsis =
            index + extractBoundariesSize <= textLength ? '…' : ''
          extracts.push(`${prefixEllipsis}${extract}${suffixEllipsis}`)
        }
        if (!extracts.length && textLength < 200) {
          // If there is no match but it's a short title, return it.
          return text
        }
        return extracts.join('')
      }

      /**
       * Update the URL with a query string for the search string
       * @param  {String} query The search query
       */
      function updateURL(query) {
        // Create the properties
        let state = history.state
        let title = document.title
        let url = window.location.origin + window.location.pathname
        if (query) {
          url += '?q=' + encodeURI(query)
        }

        // Update the URL
        history.pushState(state, title, url)
      }
    })()
  </script>
{% endblock extra_body %}