145 lines
4.2 KiB
JavaScript
145 lines
4.2 KiB
JavaScript
'use strict';
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{{ $searchDataFile := printf "%s.search-data.json" .Language.Lang }}
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{{ $searchData := resources.Get "search-data.json" | resources.ExecuteAsTemplate $searchDataFile . | resources.Minify | resources.Fingerprint }}
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{{ $searchConfig := i18n "bookSearchConfig" | default "{}" }}
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(function () {
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const searchDataURL = '{{ $searchData.RelPermalink }}';
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const indexConfig = Object.assign({{ $searchConfig }}, {
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doc: {
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id: 'id',
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field: ['title', 'content'],
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store: ['title', 'href', 'section']
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}
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});
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const input = document.querySelector('#book-search-input');
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const results = document.querySelector('#book-search-results');
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if (!input) {
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return
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}
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input.addEventListener('focus', init);
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input.addEventListener('keyup', search);
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document.addEventListener('keypress', focusSearchFieldOnKeyPress);
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/**
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* @param {Event} event
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*/
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function focusSearchFieldOnKeyPress(event) {
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if (event.target.value !== undefined) {
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return;
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}
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if (input === document.activeElement) {
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return;
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}
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const characterPressed = String.fromCharCode(event.charCode);
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if (!isHotkey(characterPressed)) {
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return;
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}
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input.focus();
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event.preventDefault();
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}
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/**
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* @param {String} character
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* @returns {Boolean}
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*/
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function isHotkey(character) {
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const dataHotkeys = input.getAttribute('data-hotkeys') || '';
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return dataHotkeys.indexOf(character) >= 0;
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}
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function init() {
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input.removeEventListener('focus', init); // init once
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input.required = true;
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fetch(searchDataURL)
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.then(pages => pages.json())
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.then(pages => {
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window.bookSearchIndex = FlexSearch.create('balance', indexConfig);
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window.bookSearchIndex.add(pages);
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})
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.then(() => input.required = false)
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.then(search);
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}
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function search() {
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while (results.firstChild) {
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results.removeChild(results.firstChild);
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}
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if (!input.value) {
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return;
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}
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const searchHits = window.bookSearchIndex.search(input.value, 10);
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searchHits.forEach(function (page) {
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const li = element('<li><a href></a><small contenteditable="false" ></small></li>');
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const a = li.querySelector('a'), small = li.querySelector('small');
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a.href = page.href;
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a.textContent = page.title;
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fetch(page.href)
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.then((response) => response.text())
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.then((content) => {
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// Initialize the DOM parser
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var parser = new DOMParser();
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// Parse the text
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var doc = parser.parseFromString(content, "text/html");
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// You can now even select part of that html as you would in the regular DOM
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// Example:
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// var docArticle = doc.querySelector('article').innerHTML;
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content = doc.querySelector('#content').querySelector('article').textContent
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let contentArray = lengthSplit(content, 20);
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contentArray.forEach(line => {
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if (line.match(/^\s+$/) || line.match(/^[ ]+$/) || line.match(/^[ ]*$/) || line.match(/^\s*$/)) {
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return;
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}
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if (line.search(input.value) != -1 && small.innerHTML == '') {
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small.innerHTML = line.replaceAll(input.value, String.raw`<strong style="color:red" >${input.value}</strong>`);
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return;
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}
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})
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if (small.innerHTML == '') {
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contentArray.forEach(line => {
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if (line.match(/^\s+$/) || line.match(/^[ ]+$/) || line.match(/^[ ]*$/) || line.match(/^\s*$/)) {
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return;
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}
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input.value.split('').forEach(s => {
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if (line.search(s) != -1 && small.innerHTML == '') {
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small.innerHTML = line.replaceAll(s, String.raw`<strong style="color:red" >${s}</strong>`);
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return;
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}
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})
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})
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}
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});
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results.appendChild(li);
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});
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}
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function lengthSplit(str, num) {
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let strArr = [];
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for (let i = 0; i < str.length; i += num) strArr.push(str.slice(i, i + num));
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return strArr;
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}
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/**
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* @param {String} content
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* @returns {Node}
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*/
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function element(content) {
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const div = document.createElement('div');
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div.innerHTML = content;
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return div.firstChild;
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}
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})();
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