hugo-geekdoc/assets/js/search.js

148 lines
4.0 KiB
JavaScript

'use strict';
{{ $searchDataFile := printf "%s.search-data.json" .Language.Lang }}
{{ $searchData := resources.Get "search-data.json" | resources.ExecuteAsTemplate $searchDataFile . | resources.Minify }}
(function() {
const input = document.querySelector('#gdoc-search-input');
const results = document.querySelector('#gdoc-search-results');
let showParent = {{ if .Site.Params.GeekdocSearchShowParent }}true{{ else }}false{{ end }}
if (input) {
input.addEventListener('focus', init);
input.addEventListener('keyup', search);
}
function init() {
input.removeEventListener('focus', init); // init once
loadScript('{{ index .Site.Data.assets "js/groupBy.min.js" | relURL }}');
loadScript('{{ index .Site.Data.assets "js/flexsearch.min.js" | relURL }}', function() {
const indexCfg = {{ with .Scratch.Get "geekdocSearchConfig" }}{{ . | jsonify}}{{ else }}{}{{ end }};
const dataUrl = "{{ $searchData.RelPermalink }}"
indexCfg.doc = {
id: 'id',
field: ['title', 'content'],
store: ['title', 'href', 'parent'],
};
const index = FlexSearch.create(indexCfg);
window.geekdocSearchIndex = index;
getJson(dataUrl, function(data) {
data.forEach(obj => {
window.geekdocSearchIndex.add(obj);
});
});
});
}
function search() {
while (results.firstChild) {
results.removeChild(results.firstChild);
}
if (!input.value) {
return results.classList.remove("has-hits");
}
let searchHits = window.geekdocSearchIndex.search(input.value, 10);
if (searchHits.length < 1) {
return results.classList.remove("has-hits");
}
results.classList.add("has-hits");
if (showParent === true) {
searchHits = groupBy(searchHits, hit => hit.parent);
}
const items = [];
if (showParent === true) {
for (const section in searchHits) {
const item = document.createElement('li'),
title = item.appendChild(document.createElement('span')),
subList = item.appendChild(document.createElement('ul'));
title.textContent = section;
createLinks(searchHits[section], subList);
items.push(item);
}
} else {
const item = document.createElement('li'),
title = item.appendChild(document.createElement('span')),
subList = item.appendChild(document.createElement('ul'));
title.textContent = "Results";
createLinks(searchHits, subList);
items.push(item);
}
items.forEach(item => {
results.appendChild(item);
})
}
/**
* Creates links to given pages and either returns them in an array or attaches them to a target element
* @param {Object} pages Page to which the link should point to
* @param {HTMLElement} target Element to which the links should be attatched
* @returns {Array} If target is not specified, returns an array of built links
*/
function createLinks(pages, target) {
const items = [];
for (const page of pages) {
const item = document.createElement("li"),
entry = item.appendChild(document.createElement("span")),
a = entry.appendChild(document.createElement("a"));
entry.classList.add("flex")
a.href = page.href;
a.textContent = page.title;
a.classList.add("gdoc-search__entry")
if (target) {
target.appendChild(item);
continue
}
items.push(item);
}
return items;
}
function fetchErrors(response) {
if (!response.ok) {
throw Error(response.statusText);
}
return response;
}
function getJson(src, callback) {
fetch(src)
.then(fetchErrors)
.then(response => response.json())
.then(json => callback(json))
.catch(function(error) {
console.log(error);
});
}
function loadScript(src, callback) {
let script = document.createElement('script');
script.defer = true;
script.async = false;
script.src = src;
script.onload = callback;
document.body.appendChild(script);
}
})();