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@ -67,189 +67,194 @@
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};
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</script>
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<script>
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const contentIndex = new FlexSearch.Document({
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cache: true,
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charset: "latin:extra",
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optimize: true,
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worker: true,
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document: {
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index: [{
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field: "content",
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tokenize: "strict",
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context: {
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resolution: 5,
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depth: 3,
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bidirectional: true
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},
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suggest: true,
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}, {
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field: "title",
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tokenize: "forward",
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}]
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}
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async function run() {
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const contentIndex = new FlexSearch.Document({
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cache: true,
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charset: "latin:extra",
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optimize: true,
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worker: true,
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document: {
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index: [{
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field: "content",
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tokenize: "strict",
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context: {
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resolution: 5,
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depth: 3,
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bidirectional: true
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},
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suggest: true,
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}, {
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field: "title",
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tokenize: "forward",
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}]
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}
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})
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const { content } = await fetchData()
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for (const [key, value] of Object.entries(content)) {
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contentIndex.add({
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id: key,
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title: value.title,
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content: removeMarkdown(value.content),
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})
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}
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for (const [key, value] of Object.entries(content)) {
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contentIndex.add({
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id: key,
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title: value.title,
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content: removeMarkdown(value.content),
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})
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}
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const highlight = (content, term) => {
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const highlightWindow = 20
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const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
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const splitText = content.split(/\s+/).filter(t => t !== "")
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const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().startsWith(term.toLowerCase()))
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const highlight = (content, term) => {
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const highlightWindow = 20
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const tokenizedTerm = term.split(/\s+/).filter(t => t !== "")
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const splitText = content.split(/\s+/).filter(t => t !== "")
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const includesCheck = (token) => tokenizedTerm.some(term => token.toLowerCase().startsWith(term.toLowerCase()))
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const occurrencesIndices = splitText
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.map(includesCheck)
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// calculate best index
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let bestSum = 0
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let bestIndex = 0
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for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
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const window = occurrencesIndices.slice(i, i + highlightWindow)
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const windowSum = window.reduce((total, cur) => total + cur, 0)
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if (windowSum >= bestSum) {
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bestSum = windowSum
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bestIndex = i
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}
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}
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const occurrencesIndices = splitText
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.map(includesCheck)
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const startIndex = Math.max(bestIndex - highlightWindow, 0)
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const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
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const mappedText = splitText
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.slice(startIndex, endIndex)
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.map(token => {
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if (includesCheck(token)) {
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return `<span class="search-highlight">${token}</span>`
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}
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return token
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})
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.join(" ")
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.replaceAll('</span> <span class="search-highlight">', " ")
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return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
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// calculate best index
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let bestSum = 0
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let bestIndex = 0
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for (let i = 0; i < Math.max(occurrencesIndices.length - highlightWindow, 0); i++) {
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const window = occurrencesIndices.slice(i, i + highlightWindow)
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const windowSum = window.reduce((total, cur) => total + cur, 0)
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if (windowSum >= bestSum) {
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bestSum = windowSum
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bestIndex = i
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}
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}
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const resultToHTML = ({url, title, content, term}) => {
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const text = removeMarkdown(content)
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const resultTitle = highlight(title, term)
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const resultText = highlight(text, term)
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return `<button class="result-card" id="${url}">
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const startIndex = Math.max(bestIndex - highlightWindow, 0)
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const endIndex = Math.min(startIndex + 2 * highlightWindow, splitText.length)
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const mappedText = splitText
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.slice(startIndex, endIndex)
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.map(token => {
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if (includesCheck(token)) {
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return `<span class="search-highlight">${token}</span>`
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}
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return token
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})
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.join(" ")
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.replaceAll('</span> <span class="search-highlight">', " ")
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return `${startIndex === 0 ? "" : "..."}${mappedText}${endIndex === splitText.length ? "" : "..."}`
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}
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const resultToHTML = ({url, title, content, term}) => {
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const text = removeMarkdown(content)
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const resultTitle = highlight(title, term)
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const resultText = highlight(text, term)
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return `<button class="result-card" id="${url}">
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<h3>${resultTitle}</h3>
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<p>${resultText}</p>
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</button>`
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}
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}
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const redir = (id, term) => {
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window.location.href = "{{.Site.BaseURL}}" + `${id}#:~:text=${encodeURIComponent(term)}`
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}
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const redir = (id, term) => {
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window.location.href = "{{.Site.BaseURL}}" + `${id}#:~:text=${encodeURIComponent(term)}`
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}
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const fetch = id => ({
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id,
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url: id,
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title: content[id].title,
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content: content[id].content
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})
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const formatForDisplay = id => ({
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id,
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url: id,
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title: content[id].title,
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content: content[id].content
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})
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const source = document.getElementById('search-bar')
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const results = document.getElementById("results-container")
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let term
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source.addEventListener("keyup", (e) => {
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if (e.key === "Enter") {
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const anchor = document.getElementsByClassName("result-card")[0]
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redir(anchor.id, term)
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const source = document.getElementById('search-bar')
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const results = document.getElementById("results-container")
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let term
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source.addEventListener("keyup", (e) => {
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if (e.key === "Enter") {
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const anchor = document.getElementsByClassName("result-card")[0]
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redir(anchor.id, term)
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}
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})
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source.addEventListener('input', (e) => {
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term = e.target.value
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contentIndex.search(term, [
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{
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field: "content",
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limit: 10,
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suggest: true,
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},
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{
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field: "title",
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limit: 5,
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}
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]).then(searchResults => {
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const getByField = field => {
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const results = searchResults.filter(x => x.field === field)
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if (results.length === 0) {
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return []
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} else {
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return [...results[0].result]
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}
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})
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source.addEventListener('input', (e) => {
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term = e.target.value
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contentIndex.search(term, [
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{
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field: "content",
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limit: 10,
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suggest: true,
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},
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{
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field: "title",
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limit: 5,
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}
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]).then(searchResults => {
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const getByField = field => {
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const results = searchResults.filter(x => x.field === field)
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if (results.length === 0) {
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return []
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} else {
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return [...results[0].result]
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}
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}
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const allIds = new Set([...getByField('title'), ...getByField('content')])
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const finalResults = [...allIds].map(fetch)
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}
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const allIds = new Set([...getByField('title'), ...getByField('content')])
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const finalResults = [...allIds].map(formatForDisplay)
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// display
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if (finalResults.length === 0) {
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results.innerHTML = `<button class="result-card">
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// display
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if (finalResults.length === 0) {
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results.innerHTML = `<button class="result-card">
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<h3>No results.</h3>
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<p>Try another search term?</p>
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</button>`
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} else {
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results.innerHTML = finalResults
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.map(result => resultToHTML({
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...result,
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term,
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}))
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.join("\n")
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const anchors = document.getElementsByClassName("result-card");
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[...anchors].forEach(anchor => {
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anchor.onclick = () => redir(anchor.id, term)
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})
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}
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} else {
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results.innerHTML = finalResults
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.map(result => resultToHTML({
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...result,
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term,
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}))
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.join("\n")
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const anchors = document.getElementsByClassName("result-card");
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[...anchors].forEach(anchor => {
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anchor.onclick = () => redir(anchor.id, term)
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})
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}
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})
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})
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const searchContainer = document.getElementById("search-container")
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function openSearch() {
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if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
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source.value = ""
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results.innerHTML = ""
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searchContainer.style.display = "block"
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source.focus()
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} else {
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searchContainer.style.display = "none"
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}
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const searchContainer = document.getElementById("search-container")
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function openSearch() {
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if (searchContainer.style.display === "none" || searchContainer.style.display === "") {
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source.value = ""
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results.innerHTML = ""
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searchContainer.style.display = "block"
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source.focus()
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} else {
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searchContainer.style.display = "none"
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}
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}
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function closeSearch() {
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searchContainer.style.display = "none"
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}
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function closeSearch() {
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searchContainer.style.display = "none"
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document.addEventListener('keydown', (event) => {
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if (event.key === "/") {
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event.preventDefault()
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openSearch()
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}
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if (event.key === "Escape") {
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event.preventDefault()
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closeSearch()
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}
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})
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document.addEventListener('keydown', (event) => {
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if (event.key === "/") {
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event.preventDefault()
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openSearch()
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}
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if (event.key === "Escape") {
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event.preventDefault()
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closeSearch()
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}
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window.addEventListener('DOMContentLoaded', () => {
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const searchButton = document.getElementById("search-icon")
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searchButton.addEventListener('click', (evt) => {
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openSearch()
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})
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window.addEventListener('DOMContentLoaded', () => {
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const searchButton = document.getElementById("search-icon")
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searchButton.addEventListener('click', (evt) => {
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openSearch()
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})
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searchButton.addEventListener('keydown', (evt) => {
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openSearch()
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})
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searchContainer.addEventListener('click', (evt) => {
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closeSearch()
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})
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document.getElementById("search-space").addEventListener('click', (evt) => {
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evt.stopPropagation()
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})
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searchButton.addEventListener('keydown', (evt) => {
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openSearch()
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})
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searchContainer.addEventListener('click', (evt) => {
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closeSearch()
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})
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document.getElementById("search-space").addEventListener('click', (evt) => {
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evt.stopPropagation()
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})
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})
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}
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run()
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</script>
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Jacky Zhao
4 years ago