feat: Implement search for tags (#436)
* Quartz sync: Aug 29, 2023, 10:17 PM * style: add basic style to tags in search * feat: add SearchType + tags to search preview * feat: support multiple matches * style(search): add style to matching tags * feat(search): add content to preview for tag search * fix: only display tags on tag search * feat: support basic + tag search * refactor: extract common `fillDocument`, format * feat: add hotkey to search for tags * chore: remove logs * fix: dont render empty `<ul>` if tags not present * fix(search-tag): make case insensitive * refactor: clean `hideSearch` and `showSearch` * feat: trim content similar to `description.ts` * fix(search-tag): hotkey for windows * perf: re-use main index for tag search
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@ -1,4 +1,4 @@
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import { Document } from "flexsearch"
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import { Document, SimpleDocumentSearchResultSetUnit } from "flexsearch"
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import { ContentDetails } from "../../plugins/emitters/contentIndex"
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import { ContentDetails } from "../../plugins/emitters/contentIndex"
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import { registerEscapeHandler, removeAllChildren } from "./util"
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import { registerEscapeHandler, removeAllChildren } from "./util"
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import { FullSlug, resolveRelative } from "../../util/path"
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import { FullSlug, resolveRelative } from "../../util/path"
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@ -8,12 +8,20 @@ interface Item {
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slug: FullSlug
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slug: FullSlug
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title: string
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title: string
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content: string
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content: string
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tags: string[]
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}
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}
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let index: Document<Item> | undefined = undefined
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let index: Document<Item> | undefined = undefined
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// Can be expanded with things like "term" in the future
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type SearchType = "basic" | "tags"
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// Current searchType
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let searchType: SearchType = "basic"
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const contextWindowWords = 30
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const contextWindowWords = 30
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const numSearchResults = 5
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const numSearchResults = 5
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const numTagResults = 3
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function highlight(searchTerm: string, text: string, trim?: boolean) {
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function highlight(searchTerm: string, text: string, trim?: boolean) {
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// try to highlight longest tokens first
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// try to highlight longest tokens first
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const tokenizedTerms = searchTerm
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const tokenizedTerms = searchTerm
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@ -87,9 +95,12 @@ document.addEventListener("nav", async (e: unknown) => {
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if (results) {
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if (results) {
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removeAllChildren(results)
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removeAllChildren(results)
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}
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}
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searchType = "basic" // reset search type after closing
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}
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}
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function showSearch() {
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function showSearch(searchTypeNew: SearchType) {
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searchType = searchTypeNew
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if (sidebar) {
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if (sidebar) {
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sidebar.style.zIndex = "1"
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sidebar.style.zIndex = "1"
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}
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}
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@ -98,10 +109,18 @@ document.addEventListener("nav", async (e: unknown) => {
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}
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}
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function shortcutHandler(e: HTMLElementEventMap["keydown"]) {
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function shortcutHandler(e: HTMLElementEventMap["keydown"]) {
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if (e.key === "k" && (e.ctrlKey || e.metaKey)) {
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if (e.key === "k" && (e.ctrlKey || e.metaKey) && !e.shiftKey) {
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e.preventDefault()
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e.preventDefault()
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const searchBarOpen = container?.classList.contains("active")
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const searchBarOpen = container?.classList.contains("active")
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searchBarOpen ? hideSearch() : showSearch()
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searchBarOpen ? hideSearch() : showSearch("basic")
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} else if (e.shiftKey && (e.ctrlKey || e.metaKey) && e.key.toLowerCase() === "k") {
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// Hotkey to open tag search
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e.preventDefault()
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const searchBarOpen = container?.classList.contains("active")
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searchBarOpen ? hideSearch() : showSearch("tags")
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// add "#" prefix for tag search
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if (searchBar) searchBar.value = "#"
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} else if (e.key === "Enter") {
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} else if (e.key === "Enter") {
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const anchor = document.getElementsByClassName("result-card")[0] as HTMLInputElement | null
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const anchor = document.getElementsByClassName("result-card")[0] as HTMLInputElement | null
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if (anchor) {
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if (anchor) {
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@ -110,21 +129,77 @@ document.addEventListener("nav", async (e: unknown) => {
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}
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}
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}
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}
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function trimContent(content: string) {
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// works without escaping html like in `description.ts`
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const sentences = content.replace(/\s+/g, " ").split(".")
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let finalDesc = ""
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let sentenceIdx = 0
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// Roughly estimate characters by (words * 5). Matches description length in `description.ts`.
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const len = contextWindowWords * 5
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while (finalDesc.length < len) {
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const sentence = sentences[sentenceIdx]
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if (!sentence) break
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finalDesc += sentence + "."
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sentenceIdx++
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}
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// If more content would be available, indicate it by finishing with "..."
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if (finalDesc.length < content.length) {
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finalDesc += ".."
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}
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return finalDesc
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}
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const formatForDisplay = (term: string, id: number) => {
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const formatForDisplay = (term: string, id: number) => {
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const slug = idDataMap[id]
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const slug = idDataMap[id]
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return {
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return {
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id,
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id,
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slug,
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slug,
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title: highlight(term, data[slug].title ?? ""),
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title: highlight(term, data[slug].title ?? ""),
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content: highlight(term, data[slug].content ?? "", true),
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// if searchType is tag, display context from start of file and trim, otherwise use regular highlight
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content:
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searchType === "tags"
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? trimContent(data[slug].content)
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: highlight(term, data[slug].content ?? "", true),
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tags: highlightTags(term, data[slug].tags),
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}
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}
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}
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}
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const resultToHTML = ({ slug, title, content }: Item) => {
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function highlightTags(term: string, tags: string[]) {
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if (tags && searchType === "tags") {
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// Find matching tags
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const termLower = term.toLowerCase()
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let matching = tags.filter((str) => str.includes(termLower))
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// Substract matching from original tags, then push difference
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if (matching.length > 0) {
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let difference = tags.filter((x) => !matching.includes(x))
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// Convert to html (cant be done later as matches/term dont get passed to `resultToHTML`)
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matching = matching.map((tag) => `<li><p class="match-tag">#${tag}</p></li>`)
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difference = difference.map((tag) => `<li><p>#${tag}</p></li>`)
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matching.push(...difference)
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}
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// Only allow max of `numTagResults` in preview
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if (tags.length > numTagResults) {
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matching.splice(numTagResults)
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}
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return matching
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} else {
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return []
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}
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}
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const resultToHTML = ({ slug, title, content, tags }: Item) => {
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const htmlTags = tags.length > 0 ? `<ul>${tags.join("")}</ul>` : ``
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const button = document.createElement("button")
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const button = document.createElement("button")
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button.classList.add("result-card")
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button.classList.add("result-card")
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button.id = slug
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button.id = slug
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button.innerHTML = `<h3>${title}</h3><p>${content}</p>`
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button.innerHTML = `<h3>${title}</h3>${htmlTags}<p>${content}</p>`
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button.addEventListener("click", () => {
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button.addEventListener("click", () => {
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const targ = resolveRelative(currentSlug, slug)
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const targ = resolveRelative(currentSlug, slug)
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window.spaNavigate(new URL(targ, window.location.toString()))
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window.spaNavigate(new URL(targ, window.location.toString()))
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@ -148,15 +223,45 @@ document.addEventListener("nav", async (e: unknown) => {
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}
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}
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async function onType(e: HTMLElementEventMap["input"]) {
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async function onType(e: HTMLElementEventMap["input"]) {
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const term = (e.target as HTMLInputElement).value
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let term = (e.target as HTMLInputElement).value
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const searchResults = (await index?.searchAsync(term, numSearchResults)) ?? []
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let searchResults: SimpleDocumentSearchResultSetUnit[]
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if (term.toLowerCase().startsWith("#")) {
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searchType = "tags"
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} else {
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searchType = "basic"
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}
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switch (searchType) {
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case "tags": {
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term = term.substring(1)
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searchResults =
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(await index?.searchAsync({ query: term, limit: numSearchResults, index: ["tags"] })) ??
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[]
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break
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}
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case "basic":
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default: {
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searchResults =
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(await index?.searchAsync({
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query: term,
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limit: numSearchResults,
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index: ["title", "content"],
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})) ?? []
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}
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}
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const getByField = (field: string): number[] => {
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const getByField = (field: string): number[] => {
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const results = searchResults.filter((x) => x.field === field)
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const results = searchResults.filter((x) => x.field === field)
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return results.length === 0 ? [] : ([...results[0].result] as number[])
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return results.length === 0 ? [] : ([...results[0].result] as number[])
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}
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}
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// order titles ahead of content
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// order titles ahead of content
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const allIds: Set<number> = new Set([...getByField("title"), ...getByField("content")])
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const allIds: Set<number> = new Set([
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...getByField("title"),
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...getByField("content"),
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...getByField("tags"),
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])
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const finalResults = [...allIds].map((id) => formatForDisplay(term, id))
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const finalResults = [...allIds].map((id) => formatForDisplay(term, id))
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displayResults(finalResults)
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displayResults(finalResults)
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}
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}
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@ -167,8 +272,8 @@ document.addEventListener("nav", async (e: unknown) => {
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document.addEventListener("keydown", shortcutHandler)
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document.addEventListener("keydown", shortcutHandler)
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prevShortcutHandler = shortcutHandler
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prevShortcutHandler = shortcutHandler
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searchIcon?.removeEventListener("click", showSearch)
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searchIcon?.removeEventListener("click", () => showSearch("basic"))
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searchIcon?.addEventListener("click", showSearch)
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searchIcon?.addEventListener("click", () => showSearch("basic"))
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searchBar?.removeEventListener("input", onType)
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searchBar?.removeEventListener("input", onType)
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searchBar?.addEventListener("input", onType)
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searchBar?.addEventListener("input", onType)
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field: "content",
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field: "content",
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tokenize: "reverse",
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tokenize: "reverse",
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},
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},
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{
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field: "tags",
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tokenize: "reverse",
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},
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],
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],
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},
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},
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})
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})
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fillDocument(index, data)
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}
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// register handlers
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registerEscapeHandler(container, hideSearch)
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})
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/**
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* Fills flexsearch document with data
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* @param index index to fill
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* @param data data to fill index with
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*/
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async function fillDocument(index: Document<Item, false>, data: any) {
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let id = 0
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let id = 0
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for (const [slug, fileData] of Object.entries<ContentDetails>(data)) {
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for (const [slug, fileData] of Object.entries<ContentDetails>(data)) {
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await index.addAsync(id, {
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await index.addAsync(id, {
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@ -201,11 +323,8 @@ document.addEventListener("nav", async (e: unknown) => {
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slug: slug as FullSlug,
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slug: slug as FullSlug,
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title: fileData.title,
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title: fileData.title,
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content: fileData.content,
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content: fileData.content,
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tags: fileData.tags,
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})
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})
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id++
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id++
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}
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}
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}
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}
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// register handlers
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registerEscapeHandler(container, hideSearch)
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})
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@ -130,6 +130,44 @@
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margin: 0;
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margin: 0;
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}
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}
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& > ul > li {
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margin: 0;
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display: inline-block;
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white-space: nowrap;
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margin: 0;
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overflow-wrap: normal;
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}
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& > ul {
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list-style: none;
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display: flex;
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padding-left: 0;
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gap: 0.4rem;
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margin: 0;
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margin-top: 0.45rem;
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// Offset border radius
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margin-left: -2px;
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overflow: hidden;
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background-clip: border-box;
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}
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& > ul > li > p {
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border-radius: 8px;
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background-color: var(--highlight);
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overflow: hidden;
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background-clip: border-box;
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padding: 0.03rem 0.4rem;
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margin: 0;
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color: var(--secondary);
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opacity: 0.85;
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}
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& > ul > li > .match-tag {
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color: var(--tertiary);
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font-weight: bold;
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opacity: 1;
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}
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& > p {
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& > p {
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margin-bottom: 0;
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margin-bottom: 0;
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}
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}
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