Initial commit

quartz/components/scripts/comments.inline.ts

@@ -0,0 +1,91 @@
+const changeTheme = (e: CustomEventMap["themechange"]) => {
+  const theme = e.detail.theme
+  const iframe = document.querySelector("iframe.giscus-frame") as HTMLIFrameElement
+  if (!iframe) {
+    return
+  }
+
+  if (!iframe.contentWindow) {
+    return
+  }
+
+  iframe.contentWindow.postMessage(
+    {
+      giscus: {
+        setConfig: {
+          theme: getThemeUrl(getThemeName(theme)),
+        },
+      },
+    },
+    "https://giscus.app",
+  )
+}
+
+const getThemeName = (theme: string) => {
+  if (theme !== "dark" && theme !== "light") {
+    return theme
+  }
+  const giscusContainer = document.querySelector(".giscus") as GiscusElement
+  if (!giscusContainer) {
+    return theme
+  }
+  const darkGiscus = giscusContainer.dataset.darkTheme ?? "dark"
+  const lightGiscus = giscusContainer.dataset.lightTheme ?? "light"
+  return theme === "dark" ? darkGiscus : lightGiscus
+}
+
+const getThemeUrl = (theme: string) => {
+  const giscusContainer = document.querySelector(".giscus") as GiscusElement
+  if (!giscusContainer) {
+    return `https://giscus.app/themes/${theme}.css`
+  }
+  return `${giscusContainer.dataset.themeUrl ?? "https://giscus.app/themes"}/${theme}.css`
+}
+
+type GiscusElement = Omit<HTMLElement, "dataset"> & {
+  dataset: DOMStringMap & {
+    repo: `${string}/${string}`
+    repoId: string
+    category: string
+    categoryId: string
+    themeUrl: string
+    lightTheme: string
+    darkTheme: string
+    mapping: "url" | "title" | "og:title" | "specific" | "number" | "pathname"
+    strict: string
+    reactionsEnabled: string
+    inputPosition: "top" | "bottom"
+  }
+}
+
+document.addEventListener("nav", () => {
+  const giscusContainer = document.querySelector(".giscus") as GiscusElement
+  if (!giscusContainer) {
+    return
+  }
+
+  const giscusScript = document.createElement("script")
+  giscusScript.src = "https://giscus.app/client.js"
+  giscusScript.async = true
+  giscusScript.crossOrigin = "anonymous"
+  giscusScript.setAttribute("data-loading", "lazy")
+  giscusScript.setAttribute("data-emit-metadata", "0")
+  giscusScript.setAttribute("data-repo", giscusContainer.dataset.repo)
+  giscusScript.setAttribute("data-repo-id", giscusContainer.dataset.repoId)
+  giscusScript.setAttribute("data-category", giscusContainer.dataset.category)
+  giscusScript.setAttribute("data-category-id", giscusContainer.dataset.categoryId)
+  giscusScript.setAttribute("data-mapping", giscusContainer.dataset.mapping)
+  giscusScript.setAttribute("data-strict", giscusContainer.dataset.strict)
+  giscusScript.setAttribute("data-reactions-enabled", giscusContainer.dataset.reactionsEnabled)
+  giscusScript.setAttribute("data-input-position", giscusContainer.dataset.inputPosition)
+
+  const theme = document.documentElement.getAttribute("saved-theme")
+  if (theme) {
+    giscusScript.setAttribute("data-theme", getThemeUrl(getThemeName(theme)))
+  }
+
+  giscusContainer.appendChild(giscusScript)
+
+  document.addEventListener("themechange", changeTheme)
+  window.addCleanup(() => document.removeEventListener("themechange", changeTheme))
+})