From 23df17233da3f16db5166cf8a05b2089bd1f006a Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Mon, 10 Mar 2025 18:39:08 +0000
Subject: [PATCH] fix(graph): make graph non-singleton, proper cleanup, fix radial

---
 quartz/components/scripts/spa.inline.ts |   44 ++++++++++++++++++++++++++++++++++++++------
 1 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/quartz/components/scripts/spa.inline.ts b/quartz/components/scripts/spa.inline.ts
index c0152b5..77900a6 100644
--- a/quartz/components/scripts/spa.inline.ts
+++ b/quartz/components/scripts/spa.inline.ts
@@ -1,10 +1,9 @@
 import micromorph from "micromorph"
-import { FullSlug, RelativeURL, getFullSlug } from "../../util/path"
-import { normalizeRelativeURLs } from "./popover.inline"
+import { FullSlug, RelativeURL, getFullSlug, normalizeRelativeURLs } from "../../util/path"
+import { fetchCanonical } from "./util"
 
 // adapted from `micromorph`
 // https://github.com/natemoo-re/micromorph
-
 const NODE_TYPE_ELEMENT = 1
 let announcer = document.createElement("route-announcer")
 const isElement = (target: EventTarget | null): target is Element =>
@@ -41,17 +40,49 @@
   document.dispatchEvent(event)
 }
 
+const cleanupFns: Set<(...args: any[]) => void> = new Set()
+window.addCleanup = (fn) => cleanupFns.add(fn)
+
+function startLoading() {
+  const loadingBar = document.createElement("div")
+  loadingBar.className = "navigation-progress"
+  loadingBar.style.width = "0"
+  if (!document.body.contains(loadingBar)) {
+    document.body.appendChild(loadingBar)
+  }
+
+  setTimeout(() => {
+    loadingBar.style.width = "80%"
+  }, 100)
+}
+
 let p: DOMParser
 async function navigate(url: URL, isBack: boolean = false) {
+  startLoading()
   p = p || new DOMParser()
-  const contents = await fetch(`${url}`)
-    .then((res) => res.text())
+  const contents = await fetchCanonical(url)
+    .then((res) => {
+      const contentType = res.headers.get("content-type")
+      if (contentType?.startsWith("text/html")) {
+        return res.text()
+      } else {
+        window.location.assign(url)
+      }
+    })
     .catch(() => {
       window.location.assign(url)
     })
 
   if (!contents) return
 
+  // notify about to nav
+  const event: CustomEventMap["prenav"] = new CustomEvent("prenav", { detail: {} })
+  document.dispatchEvent(event)
+
+  // cleanup old
+  cleanupFns.forEach((fn) => fn())
+  cleanupFns.clear()
+
   const html = p.parseFromString(contents, "text/html")
   normalizeRelativeURLs(html, url)
 
@@ -81,7 +112,7 @@
     }
   }
 
-  // now, patch head
+  // now, patch head, re-executing scripts
   const elementsToRemove = document.head.querySelectorAll(":not([spa-preserve])")
   elementsToRemove.forEach((el) => el.remove())
   const elementsToAdd = html.head.querySelectorAll(":not([spa-preserve])")
@@ -92,6 +123,7 @@
   if (!isBack) {
     history.pushState({}, "", url)
   }
+
   notifyNav(getFullSlug(window))
   delete announcer.dataset.persist
 }

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