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// =================================================
// Basic search functionality via Fuse.js
// Based on: https://gist.github.com/eddiewebb/735feb48f50f0ddd65ae5606a1cb41ae#gistcomment-2987774
// =================================================
'use strict';
const fuseOptions = {
keys: [
{ name: 'title', weight: .4 },
{ name: 'tags', weight: .3 },
{ name: 'description', weight: .2 },
{ name: 'content', weight: .1 }
],
ignoreLocation: true,
minMatchCharLength: {{ .Site.Params.Search.minLength | default .Site.Data.default.search.minLength }},
shouldSort: false,
threshold: 0
}
const searchResults = document.querySelector('#search-results');
// Populate results
function populateResults(output) {
output.forEach((value) => {
const el = value.item;
const postTitle = el.title;
const postDate = el.date;
const htmlPostTitle = document.createElement('p');
htmlPostTitle.textContent = postTitle;
// Pull HTML template
const resultsTemplate = document.querySelector('#search-results-template')
.content.cloneNode(true);
const postLink = resultsTemplate.querySelector('.btn');
// Replace values
postLink.setAttribute('href', el.permalink);
postLink.setAttribute('title', postTitle);
if (postDate) {
const htmlPostDate = document.createElement('time');
htmlPostDate.setAttribute('datetime', postDate);
htmlPostDate.textContent = postDate;
const htmlPostWithDate = document.createDocumentFragment();
htmlPostWithDate.appendChild(htmlPostTitle);
htmlPostWithDate.appendChild(htmlPostDate);
postLink.setAttribute('title', postTitle + ' (' + postDate + ')');
postLink.appendChild(htmlPostWithDate);
} else {
postLink.setAttribute('title', postTitle);
postLink.appendChild(htmlPostTitle);
}
searchResults.appendChild(resultsTemplate);
});
}
// Search info section
const searchInfo = document.querySelector('#search-info');
// Show message
function report(message, type) {
const el = document.createElement('p');
el.textContent = message;
if (type) {
el.classList.add(type);
}
searchInfo.appendChild(el);
}
function executeSearch(query) {
fetch(searchResults.getAttribute('data-search-index'))
.then((response) => {
return response.json();
})
.then((data) => {
// Limit results and throw an error if too many pages are found
const limit = {{ .Site.Params.Search.maxResults | default 30 }};
import(
'/libs/fuse.js@' +
searchResults.getAttribute('data-lib-version') +
'/dist/fuse.basic.esm.min.js'
)
.then((fuseBasic) => {
const fuse = new fuseBasic.default(data, fuseOptions);
return fuse.search(query);
})
.then((output) => {
searchInfo.firstElementChild.remove();
report('{{ T "searchResultsFor" }}: ' + query);
const matches = output.length;
if (matches > 0) {
if (matches === 1) {
report('{{ T "searchOnePageFound" }}.');
} else if (1 < matches && matches < limit + 1) {
report(matches + ' {{ T "searchPagesFound" }}.');
} else {
report('{{ T "searchTooMany" }}', 'error');
}
} else {
report('{{ T "searchNoPageFound" }}', 'error');
}
if (0 < matches && matches < limit + 1) {
populateResults(output);
}
});
});
}
// Sanitize
function getUrlParameter(string) {
string = string.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
const regex = new RegExp('[\\?&]' + string + '=([^&#]*)');
const results = regex.exec(location.search);
return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
}
// Capture input
const searchQuery = getUrlParameter('q');
if (searchQuery) {
// Transfer text to search field
document.querySelector('.search-box input')
.value = searchQuery;
executeSearch(searchQuery);
report('{{ T "searchProcessing" }}');
} else {
report('{{ T "searchAwaitingSearch" }}');
}
|
