From b12e0c97b70310230e01e2f4262726f43581a9cf Mon Sep 17 00:00:00 2001
From: Matt Vogel <mainmoniker@googlemail.com>
Date: Wed, 6 Mar 2024 22:58:33 -0500
Subject: [PATCH] feat: Roam Research flavor markdown

---
 quartz.config.ts                     |   1 +
 quartz/plugins/transformers/index.ts |   1 +
 quartz/plugins/transformers/roam.ts  | 132 +++++++++++++++++++++++++++
 3 files changed, 134 insertions(+)
 create mode 100644 quartz/plugins/transformers/roam.ts

diff --git a/quartz.config.ts b/quartz.config.ts
index 2cdadb740..80030f0a3 100644
--- a/quartz.config.ts
+++ b/quartz.config.ts
@@ -63,6 +63,7 @@ const config: QuartzConfig = {
         },
         keepBackground: false,
       }),
+      Plugin.RoamFlavoredMarkdown(),
       Plugin.ObsidianFlavoredMarkdown({ enableInHtmlEmbed: false }),
       Plugin.GitHubFlavoredMarkdown(),
       Plugin.TableOfContents(),
diff --git a/quartz/plugins/transformers/index.ts b/quartz/plugins/transformers/index.ts
index e340f10e7..51232d423 100644
--- a/quartz/plugins/transformers/index.ts
+++ b/quartz/plugins/transformers/index.ts
@@ -9,3 +9,4 @@ export { OxHugoFlavouredMarkdown } from "./oxhugofm"
 export { SyntaxHighlighting } from "./syntax"
 export { TableOfContents } from "./toc"
 export { HardLineBreaks } from "./linebreaks"
+export { RoamFlavoredMarkdown } from "./roam"
diff --git a/quartz/plugins/transformers/roam.ts b/quartz/plugins/transformers/roam.ts
new file mode 100644
index 000000000..130158532
--- /dev/null
+++ b/quartz/plugins/transformers/roam.ts
@@ -0,0 +1,132 @@
+import { QuartzTransformerPlugin } from "../types"
+
+export interface Options {
+  orComponent: boolean
+  TODOComponent: boolean
+  DONEComponent: boolean
+  videoComponent: boolean
+  audioComponent: boolean
+  pdfComponent: boolean
+  blockquoteComponent: boolean
+  tableComponent: boolean
+  attributeComponent: boolean
+}
+
+const defaultOptions: Options = {
+  orComponent: true,
+  TODOComponent: true,
+  DONEComponent: true,
+  videoComponent: true,
+  audioComponent: true,
+  pdfComponent: true,
+  blockquoteComponent: true,
+  tableComponent: true,
+  attributeComponent: true,
+}
+
+const orRegex = new RegExp(/{{or:(.*?)}}/, "g")
+const TODORegex = new RegExp(/{{.*?\bTODO\b.*?}}/, "g")
+const DONERegex = new RegExp(/{{.*?\bDONE\b.*?}}/, "g")
+const videoRegex = new RegExp(/{{.*?\bvideo\b.*?\:(.*?)}}/, "g")
+const youtubeRegex = new RegExp(/{{.*?\bvideo\b.*?(\bhttp.*?\byoutu.*?)watch\?v=(.*?)}}/, "g")
+
+const audioRegex = new RegExp(/{{.*?\baudio\b.*?\:(.*?)}}/, "g")
+const pdfRegex = new RegExp(/{{.*?\bpdf\b.*?\:(.*?)}}/, "g")
+const blockquoteRegex = new RegExp(/\[\[>\]\]/, "g")
+const roamHighlightRegex = new RegExp(/\^\^(.+)\^\^/, "g")
+const roamItalicRegex = new RegExp(/__(.+)__/, "g")
+const tableRegex = new RegExp(/- {{.*?\btable\b.*?}}/, "g") /* TODO */
+const attributeRegex = new RegExp(/\b\w+(?:\s+\w+)*::/, "g") /* TODO */
+
+export const RoamFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options> | undefined> = (
+  userOpts,
+) => {
+  const opts = { ...defaultOptions, ...userOpts }
+
+  return {
+    name: "RoamFlavoredMarkdown",
+    textTransform(_ctx, src) {
+      if (opts.orComponent) {
+        src = src.toString()
+        src = src.replaceAll(orRegex, (value, ...capture) => {
+          const [match, text] = capture
+          const options = match.split("|")
+          const id = Math.random().toString(36).substring(2, 15) // Generate a unique ID
+          const dropdown = `<select class="roam-or-component">${options.map((option: string) => `<option>${option}</option>`).join("")}</select>`
+          return dropdown
+        })
+      }
+      if (opts.TODOComponent) {
+        src = src.toString()
+        src = src.replaceAll(TODORegex, (value, ...capture) => {
+          const checkbox = '<input type="checkbox" disabled>'
+          return checkbox
+        })
+      }
+      if (opts.DONEComponent) {
+        src = src.toString()
+        src = src.replaceAll(DONERegex, (value, ...capture) => {
+          const checkbox = '<input type="checkbox" checked disabled>'
+          return checkbox
+        })
+      }
+      if (opts.videoComponent) {
+        //youtube first then regular video links
+        src = src.toString()
+        src = src.replaceAll(youtubeRegex, (value, ...capture) => {
+          const [match, text] = capture
+          const video = `<iframe width="560" height="315" src="https://www.youtube.com/embed/${text}" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>`
+          return video
+        })
+        src = src.replaceAll(videoRegex, (value, ...capture) => {
+          const [match, text] = capture
+          const video = `<video controls><source src="{${match}}" type="video/mp4"><source src="${match}" type="video/webm"></video>`
+          return video
+        })
+      }
+      if (opts.audioComponent) {
+        src = src.toString()
+        src = src.replaceAll(audioRegex, (value, ...capture) => {
+          const [match, text] = capture
+          const audio = `<audio controls>
+            <source src="${match}" type="audio/mpeg">
+            <source src="${match}" type="audio/ogg">
+            Your browser does not support the audio tag.
+          </audio>`
+          return audio
+        })
+      }
+      if (opts.pdfComponent) {
+        src = src.toString()
+        src = src.replaceAll(pdfRegex, (value, ...capture) => {
+          const [match, text] = capture
+          const pdf = `<embed src="${match}" type="application/pdf" width="600" height="800">`
+          return pdf
+        })
+      }
+      if (opts.blockquoteComponent) {
+        src = src.toString()
+        src = src.replaceAll(blockquoteRegex, (value, ...capture) => {
+          const bq = `>`
+          return bq
+        })
+      }
+      // TODO attributes in roam are sort of like block level frontmatter or tags
+
+      src = src.toString()
+      src = src.replaceAll(roamHighlightRegex, (value, ...capture) => {
+        const [match, text] = capture
+        const highlight = `==${match}==`
+        return highlight
+      })
+      // roam italics
+      src = src.replaceAll(roamItalicRegex, (value, ...capture) => {
+        const [match, text] = capture
+        const italic = `*${match}*`
+        return italic
+      })
+
+      return src
+    },
+  }
+}