From 4c904d88aba14d0d153bfac364630ad61832a73d Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Sat, 01 Jul 2023 20:35:27 +0000
Subject: [PATCH] rss + sitemap

---
 /dev/null                                  |   25 --
 quartz/plugins/index.ts                    |   10 
 quartz/plugins/transformers/description.ts |    6 
 package-lock.json                          |  428 --------------------------------------
 quartz/components/PageTitle.tsx            |   27 +-
 quartz/plugins/emitters/contentIndex.ts    |  103 ++++++++
 package.json                               |    1 
 quartz/cfg.ts                              |    5 
 quartz/path.ts                             |    3 
 quartz/plugins/emitters/index.ts           |    1 
 quartz.config.ts                           |   13 
 11 files changed, 131 insertions(+), 491 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c250a4b..92e22eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,6 @@
       "license": "MIT",
       "dependencies": {
         "@floating-ui/dom": "^1.4.0",
-        "@inquirer/prompts": "^1.0.3",
         "@napi-rs/simple-git": "^0.1.8",
         "chalk": "^4.1.2",
         "cli-spinner": "^0.2.10",
@@ -411,290 +410,6 @@
         "@floating-ui/core": "^1.3.1"
       }
     },
-    "node_modules/@inquirer/checkbox": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/@inquirer/checkbox/-/checkbox-1.3.1.tgz",
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-      "dependencies": {
-        "@inquirer/core": "^2.1.0",
-        "@inquirer/type": "^1.1.0",
-        "ansi-escapes": "^4.3.2",
-        "chalk": "^4.1.2",
-        "figures": "^3.2.0"
-      },
-      "engines": {
-        "node": ">=14.18.0"
-      }
-    },
-    "node_modules/@inquirer/checkbox/node_modules/@inquirer/core": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/@inquirer/core/-/core-2.1.0.tgz",
-      "integrity": "sha512-Hq9hZ5G/VUaeWkSs283HZwwMbe79lcOI5HWwW1GIM1ohouy2/x489Qf/A1BJYvMUj+QG4LSB5LtVMjn9P3Ge6Q==",
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@@ -1386,20 +1101,6 @@
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-      "engines": {
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@@ -1539,11 +1240,6 @@
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-      "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
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@@ -1578,25 +1274,6 @@
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@@ -2195,14 +1872,6 @@
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@@ -2298,20 +1943,6 @@
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-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-1.0.0.tgz",
-      "integrity": "sha512-avsJQhyd+680gKXyG/sQc0nXaC6rBkPOfyHYcFb9+hdkqQkR9bdnkJ0AMZhke0oesPqIO+mFFJ+IdBc7mst4IA==",
-      "engines": {
-        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
-      }
-    },
     "node_modules/nlcst-to-string": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/nlcst-to-string/-/nlcst-to-string-3.1.1.tgz",
@@ -3909,14 +3532,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/os-tmpdir": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
-      "integrity": "sha512-D2FR03Vir7FIu45XBY20mTb+/ZSWB00sjU9jdQXt83gDrI4Ztz5Fs7/yy74g2N5SVQY4xY1qDr4rNddwYRVX0g==",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/parse-latin": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/parse-latin/-/parse-latin-5.0.1.tgz",
@@ -4407,14 +4022,6 @@
       "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.2.tgz",
       "integrity": "sha512-IXgzBWvWQwE6PrDI05OvmXUIruQTcoMDzRsOd5CDvHCVLcLHMTSYvOK5Cm46kWqlV3yAbuSpBZdJ5oP5OUoStg=="
     },
-    "node_modules/run-async": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/run-async/-/run-async-3.0.0.tgz",
-      "integrity": "sha512-540WwVDOMxA6dN6We19EcT9sc3hkXPw5mzRNGM3FkdN/vtE9NFvj5lFAPNwUDmJjXidm3v7TC1cTE7t17Ulm1Q==",
-      "engines": {
-        "node": ">=0.12.0"
-      }
-    },
     "node_modules/run-parallel": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
@@ -4698,17 +4305,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/tmp": {
-      "version": "0.0.33",
-      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
-      "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
-      "dependencies": {
-        "os-tmpdir": "~1.0.2"
-      },
-      "engines": {
-        "node": ">=0.6.0"
-      }
-    },
     "node_modules/to-regex-range": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -4751,17 +4347,6 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
-    "node_modules/type-fest": {
-      "version": "0.21.3",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.21.3.tgz",
-      "integrity": "sha512-t0rzBq87m3fVcduHDUFhKmyyX+9eo6WQjZvf51Ea/M0Q7+T374Jp1aUiyUl0GKxp8M/OETVHSDvmkyPgvX+X2w==",
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/typescript": {
       "version": "5.1.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.3.tgz",
@@ -5023,19 +4608,6 @@
       "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.4.0.tgz",
       "integrity": "sha512-i3KR1mQMNwY2wx20ozq2EjISGtQWDIfV56We+yGJ5yDs8jTwQiLLaqHlkBHITlCuJnYlVRmXegxFxZg7gqI++A=="
     },
-    "node_modules/wrap-ansi": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
-      "integrity": "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==",
-      "dependencies": {
-        "ansi-styles": "^4.0.0",
-        "string-width": "^4.1.0",
-        "strip-ansi": "^6.0.0"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/wrap-ansi-cjs": {
       "name": "wrap-ansi",
       "version": "7.0.0",
diff --git a/package.json b/package.json
index e16c92f..614bb76 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,6 @@
   },
   "dependencies": {
     "@floating-ui/dom": "^1.4.0",
-    "@inquirer/prompts": "^1.0.3",
     "@napi-rs/simple-git": "^0.1.8",
     "chalk": "^4.1.2",
     "cli-spinner": "^0.2.10",
diff --git a/quartz.config.ts b/quartz.config.ts
index 0f2ca8d..f58bc32 100644
--- a/quartz.config.ts
+++ b/quartz.config.ts
@@ -5,7 +5,7 @@
 const sharedPageComponents = {
   head: Component.Head(),
   header: [
-    Component.PageTitle({ title: "🪴 Quartz 4.0" }),
+    Component.PageTitle(),
     Component.Spacer(),
     Component.Search(),
     Component.Darkmode()
@@ -43,7 +43,10 @@
 
 const config: QuartzConfig = {
   configuration: {
+    pageTitle: "🪴 Quartz 4.0",
     enableSPA: true,
+    enablePopovers: true,
+    canonicalUrl: "quartz.jzhao.xyz",
     ignorePatterns: ["private", "templates"],
     theme: {
       typography: { // loaded from Google Fonts
@@ -90,7 +93,7 @@
       Plugin.Description(),
     ],
     filters: [
-      Plugin.RemoveDrafts()
+      Plugin.RemoveDrafts(),
     ],
     emitters: [
       Plugin.AliasRedirects(),
@@ -109,8 +112,10 @@
         ...listPageLayout,
         pageBody: Component.FolderContent(),
       }),
-      Plugin.ContentIndex(), // you can exclude this if you don't plan on using popovers, graph view, or backlinks
-      Plugin.CNAME({ domain: "quartz.jzhao.xyz" }) // set this to your final deployed domain
+      Plugin.ContentIndex({
+        enableSiteMap: true,
+        enableRSS: true,
+      }),
     ]
   },
 }
diff --git a/quartz/cfg.ts b/quartz/cfg.ts
index bb097c9..1c9ece8 100644
--- a/quartz/cfg.ts
+++ b/quartz/cfg.ts
@@ -3,12 +3,17 @@
 import { Theme } from "./theme"
 
 export interface GlobalConfiguration {
+  pageTitle: string,
   /** Whether to enable single-page-app style rendering. this prevents flashes of unstyled content and improves smoothness of Quartz */
   enableSPA: boolean,
   /** Whether to display Wikipedia-style popovers when hovering over links */
   enablePopovers: boolean,
   /** Glob patterns to not search */
   ignorePatterns: string[],
+  /** Base URL to use for CNAME files, sitemaps, and RSS feeds that require an absolute URL.
+  *   Quartz will avoid using this as much as possible and use relative URLs most of the time  
+  */
+  canonicalUrl?: string,
   theme: Theme
 }
 
diff --git a/quartz/components/PageTitle.tsx b/quartz/components/PageTitle.tsx
index e8377ee..15cd4e4 100644
--- a/quartz/components/PageTitle.tsx
+++ b/quartz/components/PageTitle.tsx
@@ -1,22 +1,17 @@
 import { resolveToRoot } from "../path"
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 
-interface Options {
-  title: string
+function PageTitle({ fileData, cfg }: QuartzComponentProps) {
+  const title = cfg?.pageTitle ?? "Untitled Quartz"
+  const slug = fileData.slug!
+  const baseDir = resolveToRoot(slug)
+  return <h1 class="page-title"><a href={baseDir}>{title}</a></h1>
 }
 
-export default ((opts?: Options) => {
-  const title = opts?.title ?? "Untitled Quartz"
-  function PageTitle({ fileData }: QuartzComponentProps) {
-    const slug = fileData.slug!
-    const baseDir = resolveToRoot(slug)
-    return <h1 class="page-title"><a href={baseDir}>{title}</a></h1>
-  }
-  PageTitle.css = `
-  .page-title {
-    margin: 0;
-  }
-  `
+PageTitle.css = `
+.page-title {
+  margin: 0;
+}
+`
 
-  return PageTitle
-}) satisfies QuartzComponentConstructor
+export default (() => PageTitle) satisfies QuartzComponentConstructor
diff --git a/quartz/path.ts b/quartz/path.ts
index 18d74d7..4755687 100644
--- a/quartz/path.ts
+++ b/quartz/path.ts
@@ -27,6 +27,9 @@
 // resolve /a/b/c to ../../
 export function resolveToRoot(slug: string): string {
   let fp = trimPathSuffix(slug)
+  if (fp.endsWith("index")) {
+    fp = fp.slice(0, -"index".length)
+  }
 
   if (fp === "") {
     return "."
diff --git a/quartz/plugins/emitters/cname.ts b/quartz/plugins/emitters/cname.ts
deleted file mode 100644
index c783dfb..0000000
--- a/quartz/plugins/emitters/cname.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-import { QuartzEmitterPlugin } from "../types"
-
-interface Options {
-  domain: string
-}
-
-export const CNAME: QuartzEmitterPlugin<Options> = (opts?: Options) => ({
-  name: "CNAME",
-  getQuartzComponents() {
-    return []
-  },
-  async emit(_contentFolder, _cfg, _content, _resources, emit): Promise<string[]> {
-    const slug = "CNAME"
-
-    if (opts?.domain) {
-      await emit({
-        content: opts?.domain,
-        slug,
-        ext: "",
-      })
-    }
-
-    return ["CNAME"]
-  }
-})
diff --git a/quartz/plugins/emitters/contentIndex.ts b/quartz/plugins/emitters/contentIndex.ts
index cd7c924..f75334a 100644
--- a/quartz/plugins/emitters/contentIndex.ts
+++ b/quartz/plugins/emitters/contentIndex.ts
@@ -1,37 +1,120 @@
+import { GlobalConfiguration } from "../../cfg"
 import { QuartzEmitterPlugin } from "../types"
 import path from "path"
 
 export type ContentIndex = Map<string, ContentDetails>
 export type ContentDetails = {
   title: string,
-  links?: string[],
-  tags?: string[],
+  links: string[],
+  tags: string[],
   content: string,
+  date?: Date,
+  description?: string,
 }
 
-export const ContentIndex: QuartzEmitterPlugin = () => {
+interface Options {
+  enableSiteMap: boolean
+  enableRSS: boolean
+}
+
+const defaultOptions: Options = {
+  enableSiteMap: true,
+  enableRSS: true,
+}
+
+function generateSiteMap(cfg: GlobalConfiguration, idx: ContentIndex): string {
+  const base = cfg.canonicalUrl ?? ""
+  const createURLEntry = (slug: string, content: ContentDetails): string => `<url>
+    <loc>https://${base}/${slug}</loc>
+    <lastmod>${content.date?.toISOString()}</lastmod>
+  </url>`
+  const urls = Array.from(idx).map(([slug, content]) => createURLEntry(slug, content)).join("")
+  return `<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">${urls}</urlset>`
+}
+
+function generateRSSFeed(cfg: GlobalConfiguration, idx: ContentIndex): string {
+  const base = cfg.canonicalUrl ?? ""
+  const root = `https://${base}`
+
+  // TODO: ogimage
+  const createURLEntry = (slug: string, content: ContentDetails): string => `<items>
+    <title>${content.title}</title>
+    <link>${root}/${slug}</link>
+    <guid>${root}/${slug}</guid>
+    <description>${content.description}</description>
+    <pubDate>${content.date?.toUTCString()}</pubDate>
+  </items>`
+
+  const items = Array.from(idx).map(([slug, content]) => createURLEntry(slug, content)).join("")
+  return `<rss xmlns:atom="http://www.w3.org/2005/atom" version="2.0">
+    <channel>
+      <title>${cfg.pageTitle}</title>
+      <link>${root}</link>
+      <description>Recent content on ${cfg.pageTitle}</description>
+      <generator>Quartz -- quartz.jzhao.xyz</generator>
+      <atom:link href="${root}/index.xml" rel="self" type="application/rss+xml"/>
+    </channel>
+    ${items}
+  </rss>`
+}
+
+export const ContentIndex: QuartzEmitterPlugin<Options> = (opts) => {
+  opts = { ...defaultOptions, ...opts }
   return {
     name: "ContentIndex",
-    async emit(_contentDir, _cfg, content, _resources, emit) {
-      const fp = path.join("static", "contentIndex")
+    async emit(_contentDir, cfg, content, _resources, emit) {
+      const emitted: string[] = []
       const linkIndex: ContentIndex = new Map()
       for (const [_tree, file] of content) {
-        let slug = file.data.slug!
+        const slug = file.data.slug!
+        const date = file.data.dates?.modified ?? new Date()
         linkIndex.set(slug, {
           title: file.data.frontmatter?.title!,
           links: file.data.links ?? [],
-          tags: file.data.frontmatter?.tags,
-          content: file.data.text ?? ""
+          tags: file.data.frontmatter?.tags ?? [],
+          content: file.data.text ?? "",
+          date: date,
+          description: file.data.description ?? ""
         })
       }
 
+      if (opts?.enableSiteMap) {
+        await emit({
+          content: generateSiteMap(cfg, linkIndex),
+          slug: "sitemap",
+          ext: ".xml"
+        })
+        emitted.push("sitemap.xml")
+      }
+
+      if (opts?.enableRSS) {
+        await emit({
+          content: generateRSSFeed(cfg, linkIndex),
+          slug: "index",
+          ext: ".xml"
+        })
+        emitted.push("index.xml")
+      }
+
+      const fp = path.join("static", "contentIndex")
+      const simplifiedIndex = Object.fromEntries(
+        Array.from(linkIndex).map(([slug, content]) => {
+          // remove description and from content index as nothing downstream
+          // actually uses it. we only keep it in the index as we need it
+          // for the RSS feed
+          delete content.description
+          delete content.date
+          return [slug, content]
+        })
+      )
       await emit({
-        content: JSON.stringify(Object.fromEntries(linkIndex)),
+        content: JSON.stringify(simplifiedIndex),
         slug: fp,
         ext: ".json",
       })
+      emitted.push(`${fp}.json`)
 
-      return [`${fp}.json`]
+      return emitted
     },
     getQuartzComponents: () => [],
   }
diff --git a/quartz/plugins/emitters/index.ts b/quartz/plugins/emitters/index.ts
index ff684d5..435771d 100644
--- a/quartz/plugins/emitters/index.ts
+++ b/quartz/plugins/emitters/index.ts
@@ -3,4 +3,3 @@
 export { FolderPage } from './folderPage'
 export { ContentIndex } from './contentIndex'
 export { AliasRedirects } from './aliases'
-export { CNAME } from './cname'
diff --git a/quartz/plugins/index.ts b/quartz/plugins/index.ts
index ae4593f..8815811 100644
--- a/quartz/plugins/index.ts
+++ b/quartz/plugins/index.ts
@@ -50,6 +50,11 @@
       componentResources.afterDOMLoaded.push(afterDOMLoaded)
     }
   }
+  
+  if (cfg.enablePopovers) {
+    componentResources.afterDOMLoaded.push(popoverScript)
+    componentResources.css.push(popoverStyle)
+  }
 
   if (cfg.enableSPA) {
     componentResources.afterDOMLoaded.push(spaRouterScript)
@@ -61,11 +66,6 @@
     )
   }
 
-  if (cfg.enablePopovers) {
-    componentResources.afterDOMLoaded.push(popoverScript)
-    componentResources.css.push(popoverStyle)
-  }
-
   emit({
     slug: "index",
     ext: ".css",
diff --git a/quartz/plugins/transformers/description.ts b/quartz/plugins/transformers/description.ts
index 0e41c5b..cc20769 100644
--- a/quartz/plugins/transformers/description.ts
+++ b/quartz/plugins/transformers/description.ts
@@ -10,6 +10,10 @@
   descriptionLength: 150
 }
 
+const escapeHTML = (unsafe: string) => {
+  return unsafe.replaceAll('&', '&amp;').replaceAll('<', '&lt;').replaceAll('>', '&gt;').replaceAll('"', '&quot;').replaceAll("'", '&#039;');
+}
+
 export const Description: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
   const opts = { ...defaultOptions, ...userOpts }
   return {
@@ -19,7 +23,7 @@
         () => {
           return async (tree: HTMLRoot, file) => {
             const frontMatterDescription = file.data.frontmatter?.description
-            const text = toString(tree)
+            const text = escapeHTML(toString(tree))
 
             const desc = frontMatterDescription ?? text
             const sentences = desc.replace(/\s+/g, ' ').split('.')

--
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