feat: Adding support for i18n (closes #462) (#738)

* fix: alt error mix with height/width

More granular detection of alt and resize in image

* fix: format

* feat: init i18n

* feat: add translation

* style: prettier for test

* fix: build-up the locale to fusion with dateLocale

* style: run prettier

* remove cursed file

* refactor: remove i18n library and use locale way instead

* format with prettier

* forgot to remove test

* prevent merging error

* format

* format

* fix: allow string for locale
- Check during translation if valid / existing locale
- Allow to use "en" and "en-US" for example
- Add fallback directly in the function
- Add default key in the function
- Add docstring to cfg.ts

* forgot item translation

* remove unused locale variable

* forgot to remove fr-FR testing

* format

quartz.config.ts

@@ -9,6 +9,7 @@ const config: QuartzConfig = {
     analytics: {
       provider: "plausible",
     },
+    locale: "en-US",
     baseUrl: "quartz.jzhao.xyz",
     ignorePatterns: ["private", "templates", ".obsidian"],
     defaultDateType: "created",

quartz/cfg.ts

@@ -37,8 +37,8 @@ export interface GlobalConfiguration {
   baseUrl?: string
   theme: Theme
   /**
-   * The locale to use for date formatting. Default to "en-US"
    * Allow to translate the date in the language of your choice.
+   * Also used for UI translation (default: en-US)
    * Need to be formated following the IETF language tag format (https://en.wikipedia.org/wiki/IETF_language_tag)
    */
   locale?: string

quartz/components/Backlinks.tsx

@@ -1,14 +1,15 @@
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import style from "./styles/backlinks.scss"
 import { resolveRelative, simplifySlug } from "../util/path"
+import { i18n } from "../i18n/i18next"
 import { classNames } from "../util/lang"
 
-function Backlinks({ fileData, allFiles, displayClass }: QuartzComponentProps) {
+function Backlinks({ fileData, allFiles, displayClass, cfg }: QuartzComponentProps) {
   const slug = simplifySlug(fileData.slug!)
   const backlinkFiles = allFiles.filter((file) => file.links?.includes(slug))
   return (
     <div class={classNames(displayClass, "backlinks")}>
-      <h3>Backlinks</h3>
+      <h3>{i18n(cfg.locale, "backlinks.backlinks")}</h3>
       <ul class="overflow">
         {backlinkFiles.length > 0 ? (
           backlinkFiles.map((f) => (
@@ -19,7 +20,7 @@ function Backlinks({ fileData, allFiles, displayClass }: QuartzComponentProps) {
             </li>
           ))
         ) : (
-          <li>No backlinks found</li>
+          <li>{i18n(cfg.locale, "backlinks.noBlacklinksFound")}</li>
         )}
       </ul>
     </div>

quartz/components/Darkmode.tsx

@@ -4,9 +4,10 @@
 import darkmodeScript from "./scripts/darkmode.inline"
 import styles from "./styles/darkmode.scss"
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
+import { i18n } from "../i18n/i18next"
 import { classNames } from "../util/lang"
 
-function Darkmode({ displayClass }: QuartzComponentProps) {
+function Darkmode({ displayClass, cfg }: QuartzComponentProps) {
   return (
     <div class={classNames(displayClass, "darkmode")}>
       <input class="toggle" id="darkmode-toggle" type="checkbox" tabIndex={-1} />
@@ -22,7 +23,7 @@ function Darkmode({ displayClass }: QuartzComponentProps) {
           style="enable-background:new 0 0 35 35"
           xmlSpace="preserve"
         >
-          <title>Light mode</title>
+          <title>{i18n(cfg.locale, "darkmode.lightMode")}</title>
           <path d="M6,17.5C6,16.672,5.328,16,4.5,16h-3C0.672,16,0,16.672,0,17.5    S0.672,19,1.5,19h3C5.328,19,6,18.328,6,17.5z M7.5,26c-0.414,0-0.789,0.168-1.061,0.439l-2,2C4.168,28.711,4,29.086,4,29.5    C4,30.328,4.671,31,5.5,31c0.414,0,0.789-0.168,1.06-0.44l2-2C8.832,28.289,9,27.914,9,27.5C9,26.672,8.329,26,7.5,26z M17.5,6    C18.329,6,19,5.328,19,4.5v-3C19,0.672,18.329,0,17.5,0S16,0.672,16,1.5v3C16,5.328,16.671,6,17.5,6z M27.5,9    c0.414,0,0.789-0.168,1.06-0.439l2-2C30.832,6.289,31,5.914,31,5.5C31,4.672,30.329,4,29.5,4c-0.414,0-0.789,0.168-1.061,0.44    l-2,2C26.168,6.711,26,7.086,26,7.5C26,8.328,26.671,9,27.5,9z M6.439,8.561C6.711,8.832,7.086,9,7.5,9C8.328,9,9,8.328,9,7.5    c0-0.414-0.168-0.789-0.439-1.061l-2-2C6.289,4.168,5.914,4,5.5,4C4.672,4,4,4.672,4,5.5c0,0.414,0.168,0.789,0.439,1.06    L6.439,8.561z M33.5,16h-3c-0.828,0-1.5,0.672-1.5,1.5s0.672,1.5,1.5,1.5h3c0.828,0,1.5-0.672,1.5-1.5S34.328,16,33.5,16z     M28.561,26.439C28.289,26.168,27.914,26,27.5,26c-0.828,0-1.5,0.672-1.5,1.5c0,0.414,0.168,0.789,0.439,1.06l2,2    C28.711,30.832,29.086,31,29.5,31c0.828,0,1.5-0.672,1.5-1.5c0-0.414-0.168-0.789-0.439-1.061L28.561,26.439z M17.5,29    c-0.829,0-1.5,0.672-1.5,1.5v3c0,0.828,0.671,1.5,1.5,1.5s1.5-0.672,1.5-1.5v-3C19,29.672,18.329,29,17.5,29z M17.5,7    C11.71,7,7,11.71,7,17.5S11.71,28,17.5,28S28,23.29,28,17.5S23.29,7,17.5,7z M17.5,25c-4.136,0-7.5-3.364-7.5-7.5    c0-4.136,3.364-7.5,7.5-7.5c4.136,0,7.5,3.364,7.5,7.5C25,21.636,21.636,25,17.5,25z"></path>
         </svg>
       </label>
@@ -38,7 +39,7 @@ function Darkmode({ displayClass }: QuartzComponentProps) {
           style="enable-background:new 0 0 100 100"
           xmlSpace="preserve"
         >
-          <title>Dark mode</title>
+          <title>{i18n(cfg.locale, "darkmode.lightMode")}</title>
           <path d="M96.76,66.458c-0.853-0.852-2.15-1.064-3.23-0.534c-6.063,2.991-12.858,4.571-19.655,4.571  C62.022,70.495,50.88,65.88,42.5,57.5C29.043,44.043,25.658,23.536,34.076,6.47c0.532-1.08,0.318-2.379-0.534-3.23  c-0.851-0.852-2.15-1.064-3.23-0.534c-4.918,2.427-9.375,5.619-13.246,9.491c-9.447,9.447-14.65,22.008-14.65,35.369  c0,13.36,5.203,25.921,14.65,35.368s22.008,14.65,35.368,14.65c13.361,0,25.921-5.203,35.369-14.65  c3.872-3.871,7.064-8.328,9.491-13.246C97.826,68.608,97.611,67.309,96.76,66.458z"></path>
         </svg>
       </label>

quartz/components/Footer.tsx

@@ -1,20 +1,22 @@
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import style from "./styles/footer.scss"
 import { version } from "../../package.json"
+import { i18n } from "../i18n/i18next"
 
 interface Options {
   links: Record<string, string>
 }
 
 export default ((opts?: Options) => {
-  function Footer({ displayClass }: QuartzComponentProps) {
+  function Footer({ displayClass, cfg }: QuartzComponentProps) {
     const year = new Date().getFullYear()
     const links = opts?.links ?? []
     return (
       <footer class={`${displayClass ?? ""}`}>
         <hr />
         <p>
-          Created with <a href="https://quartz.jzhao.xyz/">Quartz v{version}</a>, © {year}
+          {i18n(cfg.locale, "footer.createdWith")}{" "}
+          <a href="https://quartz.jzhao.xyz/">Quartz v{version}</a>, © {year}
         </p>
         <ul>
           {Object.entries(links).map(([text, link]) => (

quartz/components/Graph.tsx

@@ -2,6 +2,7 @@ import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 // @ts-ignore
 import script from "./scripts/graph.inline"
 import style from "./styles/graph.scss"
+import { i18n } from "../i18n/i18next"
 import { classNames } from "../util/lang"
 
 export interface D3Config {
@@ -53,12 +54,12 @@ const defaultOptions: GraphOptions = {
 }
 
 export default ((opts?: GraphOptions) => {
-  function Graph({ displayClass }: QuartzComponentProps) {
+  function Graph({ displayClass, cfg }: QuartzComponentProps) {
     const localGraph = { ...defaultOptions.localGraph, ...opts?.localGraph }
     const globalGraph = { ...defaultOptions.globalGraph, ...opts?.globalGraph }
     return (
       <div class={classNames(displayClass, "graph")}>
-        <h3>Graph View</h3>
+        <h3>{i18n(cfg.locale, "graph.graphView")}</h3>
         <div class="graph-outer">
           <div id="graph-container" data-cfg={JSON.stringify(localGraph)}></div>
           <svg

quartz/components/Head.tsx

@@ -1,11 +1,13 @@
+import { i18n } from "../i18n/i18next"
 import { FullSlug, _stripSlashes, joinSegments, pathToRoot } from "../util/path"
 import { JSResourceToScriptElement } from "../util/resources"
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 
 export default (() => {
   function Head({ cfg, fileData, externalResources }: QuartzComponentProps) {
-    const title = fileData.frontmatter?.title ?? "Untitled"
+    const title = fileData.frontmatter?.title ?? i18n(cfg.locale, "head.untitled")
-    const description = fileData.description?.trim() ?? "No description provided"
+    const description =
+      fileData.description?.trim() ?? i18n(cfg.locale, "head.noDescriptionProvided")
     const { css, js } = externalResources
 
     const url = new URL(`https://${cfg.baseUrl ?? "example.com"}`)

quartz/components/RecentNotes.tsx

@@ -5,6 +5,7 @@ import { byDateAndAlphabetical } from "./PageList"
 import style from "./styles/recentNotes.scss"
 import { Date, getDate } from "./Date"
 import { GlobalConfiguration } from "../cfg"
+import { i18n } from "../i18n/i18next"
 import { classNames } from "../util/lang"
 
 interface Options {
@@ -70,7 +71,13 @@ export default ((userOpts?: Partial<Options>) => {
         </ul>
         {opts.linkToMore && remaining > 0 && (
           <p>
-            <a href={resolveRelative(fileData.slug!, opts.linkToMore)}>See {remaining} more →</a>
+            <a href={resolveRelative(fileData.slug!, opts.linkToMore)}>
+              {" "}
+              {i18n(cfg.locale, "recentNotes.seeRemainingMore", {
+                remaining: remaining.toString(),
+              })}{" "}
+              →
+            </a>
           </p>
         )}
       </div>

quartz/components/Search.tsx

@@ -3,6 +3,7 @@ import style from "./styles/search.scss"
 // @ts-ignore
 import script from "./scripts/search.inline"
 import { classNames } from "../util/lang"
+import { i18n } from "../i18n/i18next"
 
 export interface SearchOptions {
   enablePreview: boolean
@@ -13,13 +14,13 @@ const defaultOptions: SearchOptions = {
 }
 
 export default ((userOpts?: Partial<SearchOptions>) => {
-  function Search({ displayClass }: QuartzComponentProps) {
+  function Search({ displayClass, cfg }: QuartzComponentProps) {
     const opts = { ...defaultOptions, ...userOpts }
 
     return (
       <div class={classNames(displayClass, "search")}>
         <div id="search-icon">
-          <p>Search</p>
+          <p>{i18n(cfg.locale, "search")}</p>
           <div></div>
           <svg
             tabIndex={0}

quartz/components/TableOfContents.tsx

@@ -5,6 +5,7 @@ import { classNames } from "../util/lang"
 
 // @ts-ignore
 import script from "./scripts/toc.inline"
+import { i18n } from "../i18n/i18next"
 
 interface Options {
   layout: "modern" | "legacy"
@@ -14,7 +15,7 @@ const defaultOptions: Options = {
   layout: "modern",
 }
 
-function TableOfContents({ fileData, displayClass }: QuartzComponentProps) {
+function TableOfContents({ fileData, displayClass, cfg }: QuartzComponentProps) {
   if (!fileData.toc) {
     return null
   }
@@ -22,7 +23,7 @@ function TableOfContents({ fileData, displayClass }: QuartzComponentProps) {
   return (
     <div class={classNames(displayClass, "toc")}>
       <button type="button" id="toc" class={fileData.collapseToc ? "collapsed" : ""}>
-        <h3>Table of Contents</h3>
+        <h3>{i18n(cfg.locale, "tableOfContent")}</h3>
         <svg
           xmlns="http://www.w3.org/2000/svg"
           width="24"
@@ -55,15 +56,14 @@ function TableOfContents({ fileData, displayClass }: QuartzComponentProps) {
 TableOfContents.css = modernStyle
 TableOfContents.afterDOMLoaded = script
 
-function LegacyTableOfContents({ fileData }: QuartzComponentProps) {
+function LegacyTableOfContents({ fileData, cfg }: QuartzComponentProps) {
   if (!fileData.toc) {
     return null
   }
-
   return (
     <details id="toc" open={!fileData.collapseToc}>
       <summary>
-        <h3>Table of Contents</h3>
+        <h3>{i18n(cfg.locale, "tableOfContent")}</h3>
       </summary>
       <ul>
         {fileData.toc.map((tocEntry) => (

quartz/components/pages/404.tsx

@@ -1,10 +1,11 @@
-import { QuartzComponentConstructor } from "../types"
+import { i18n } from "../../i18n/i18next"
+import { QuartzComponentConstructor, QuartzComponentProps } from "../types"
 
-function NotFound() {
+function NotFound({ cfg }: QuartzComponentProps) {
   return (
     <article class="popover-hint">
       <h1>404</h1>
-      <p>Either this page is private or doesn't exist.</p>
+      <p>{i18n(cfg.locale, "404")}</p>
     </article>
   )
 }

quartz/components/pages/FolderContent.tsx

@@ -7,6 +7,7 @@ import { _stripSlashes, simplifySlug } from "../../util/path"
 import { Root } from "hast"
 import { pluralize } from "../../util/lang"
 import { htmlToJsx } from "../../util/jsx"
+import { i18n } from "../../i18n/i18next"
 
 interface FolderContentOptions {
   /**
@@ -23,7 +24,7 @@ export default ((opts?: Partial<FolderContentOptions>) => {
   const options: FolderContentOptions = { ...defaultOptions, ...opts }
 
   function FolderContent(props: QuartzComponentProps) {
-    const { tree, fileData, allFiles } = props
+    const { tree, fileData, allFiles, cfg } = props
     const folderSlug = _stripSlashes(simplifySlug(fileData.slug!))
     const allPagesInFolder = allFiles.filter((file) => {
       const fileSlug = _stripSlashes(simplifySlug(file.slug!))
@@ -52,7 +53,10 @@ export default ((opts?: Partial<FolderContentOptions>) => {
         </article>
         <div class="page-listing">
           {options.showFolderCount && (
-            <p>{pluralize(allPagesInFolder.length, "item")} under this folder.</p>
+            <p>
+              {pluralize(allPagesInFolder.length, i18n(cfg.locale, "common.item"))}{" "}
+              {i18n(cfg.locale, "folderContent.underThisFolder")}.
+            </p>
           )}
           <div>
             <PageList {...listProps} />

quartz/components/pages/TagContent.tsx

@@ -6,10 +6,11 @@ import { QuartzPluginData } from "../../plugins/vfile"
 import { Root } from "hast"
 import { pluralize } from "../../util/lang"
 import { htmlToJsx } from "../../util/jsx"
+import { i18n } from "../../i18n/i18next"
 
 const numPages = 10
 function TagContent(props: QuartzComponentProps) {
-  const { tree, fileData, allFiles } = props
+  const { tree, fileData, allFiles, cfg } = props
   const slug = fileData.slug
 
   if (!(slug?.startsWith("tags/") || slug === "tags")) {
@@ -43,7 +44,10 @@ function TagContent(props: QuartzComponentProps) {
         <article>
           <p>{content}</p>
         </article>
-        <p>Found {tags.length} total tags.</p>
+        <p>
+          {i18n(cfg.locale, "tagContent.found")} {tags.length}{" "}
+          {i18n(cfg.locale, "tagContent.totalTags")}.
+        </p>
         <div>
           {tags.map((tag) => {
             const pages = tagItemMap.get(tag)!
@@ -64,8 +68,10 @@ function TagContent(props: QuartzComponentProps) {
                 {content && <p>{content}</p>}
                 <div class="page-listing">
                   <p>
-                    {pluralize(pages.length, "item")} with this tag.{" "}
+                    {pluralize(pages.length, i18n(cfg.locale, "common.item"))}{" "}
-                    {pages.length > numPages && `Showing first ${numPages}.`}
+                    {i18n(cfg.locale, "tagContent.withThisTag")}.{" "}
+                    {pages.length > numPages &&
+                      `${i18n(cfg.locale, "tagContent.showingFirst")} ${numPages}.`}
                   </p>
                   <PageList limit={numPages} {...listProps} />
                 </div>
@@ -86,7 +92,10 @@ function TagContent(props: QuartzComponentProps) {
       <div class={classes}>
         <article>{content}</article>
         <div class="page-listing">
-          <p>{pluralize(pages.length, "item")} with this tag.</p>
+          <p>
+            {pluralize(pages.length, i18n(cfg.locale, "common.item"))}{" "}
+            {i18n(cfg.locale, "tagContent.withThisTag")}.
+          </p>
           <div>
             <PageList {...listProps} />
           </div>

quartz/components/scripts/search.inline.ts

@@ -306,7 +306,13 @@ document.addEventListener("nav", async (e: CustomEventMap["nav"]) => {
     itemTile.classList.add("result-card")
     itemTile.id = slug
     itemTile.href = resolveUrl(slug).toString()
-    itemTile.innerHTML = `<h3>${title}</h3>${htmlTags}<p class="preview">${content}</p>`
+    itemTile.innerHTML = `<h3>${title}</h3>${htmlTags}${
+      enablePreview && window.innerWidth > 600 ? "" : `<p>${content}</p>`
+    }`
+    itemTile.addEventListener("click", (event) => {
+      if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey) return
+      hideSearch()
+    })
 
     const handler = (event: MouseEvent) => {
       if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey) return

quartz/i18n/i18next.ts

@@ -0,0 +1,37 @@
+import en from "./locales/en.json"
+import fr from "./locales/fr.json"
+
+const TRANSLATION = {
+  "en-US": en,
+  "fr-FR": fr,
+} as const
+
+type TranslationOptions = {
+  [key: string]: string
+}
+
+export const i18n = (lang = "en-US", key: string, options?: TranslationOptions) => {
+  const locale =
+    Object.keys(TRANSLATION).find(
+      (key) =>
+        key.toLowerCase() === lang.toLowerCase() || key.toLowerCase().includes(lang.toLowerCase()),
+    ) ?? "en-US"
+  const getTranslation = (key: string) => {
+    const keys = key.split(".")
+    let translationString: string | Record<string, unknown> =
+      TRANSLATION[locale as keyof typeof TRANSLATION]
+    keys.forEach((key) => {
+      // @ts-ignore
+      translationString = translationString[key]
+    })
+    return translationString
+  }
+  if (options) {
+    let translationString = getTranslation(key).toString()
+    Object.keys(options).forEach((key) => {
+      translationString = translationString.replace(`{{${key}}}`, options[key])
+    })
+    return translationString
+  }
+  return getTranslation(key).toString()
+}

quartz/i18n/locales/en.json

@@ -0,0 +1,37 @@
+{
+  "404": "Either this page is private or doesn't exist.",
+  "backlinks": {
+    "backlinks": "Backlinks",
+    "noBlacklinksFound": "No backlinks found"
+  },
+  "common": {
+    "item": "item"
+  },
+  "darkmode": {
+    "lightMode": "Light mode"
+  },
+  "folderContent": {
+    "underThisFolder": "under this folder"
+  },
+  "footer": {
+    "createdWith": "Created with"
+  },
+  "graph": {
+    "graphView": "Graph View"
+  },
+  "head": {
+    "noDescriptionProvided": "No description provided",
+    "untitled": "Untitled"
+  },
+  "recentNotes": {
+    "seeRemainingMore": "See {{remaining}} more"
+  },
+  "search": "Search",
+  "tableOfContent": "Table of Contents",
+  "tagContent": {
+    "showingFirst": "Showing first",
+    "totalTags": "total tags",
+    "withThisTag": "with this tag",
+    "found": "Found"
+  }
+}

quartz/i18n/locales/fr.json

@@ -0,0 +1,38 @@
+{
+  "404": "Soit cette page est privée, soit elle n'existe pas.",
+  "backlinks": {
+    "backlinks": "Rétroliens",
+    "noBlacklinksFound": "Aucun rétrolien trouvé"
+  },
+  "common": {
+    "item": "fichier"
+  },
+  "darkmode": {
+    "darkmode": "Thème sombre",
+    "lightMode": "Thème clair"
+  },
+  "folderContent": {
+    "underThisFolder": "dans ce dossier"
+  },
+  "footer": {
+    "createdWith": "Créé avec"
+  },
+  "graph": {
+    "graphView": "Vue Graphique"
+  },
+  "head": {
+    "noDescriptionProvided": "Aucune description n'a été fournie",
+    "untitled": "Sans titre"
+  },
+  "recentNotes": {
+    "seeRemainingMore": "Voir {{remaining}} plus"
+  },
+  "search": "Rechercher",
+  "tableOfContent": "Table des Matières",
+  "tagContent": {
+    "showingFirst": "Afficher en premier",
+    "totalTags": "tags totaux",
+    "withThisTag": "avec ce tag",
+    "found": "Trouvé"
+  }
+}