dify

dify/web/app/routePrefixHandle.tsx

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+'use client'
+
+import { basePath } from '@/utils/var'
+import { useEffect } from 'react'
+import { usePathname } from 'next/navigation'
+
+export default function RoutePrefixHandle() {
+  const pathname = usePathname()
+  const handleRouteChange = () => {
+    const addPrefixToImg = (e: HTMLImageElement) => {
+      const url = new URL(e.src)
+      const prefix = url.pathname.slice(0, basePath.length)
+      if (prefix !== basePath && !url.href.startsWith('blob:') && !url.href.startsWith('data:') && !url.href.startsWith('http')) {
+        url.pathname = basePath + url.pathname
+        e.src = url.toString()
+      }
+    }
+    // create an observer instance
+    const observer = new MutationObserver((mutationsList) => {
+      for (const mutation of mutationsList) {
+        if (mutation.type === 'childList') {
+          // listen for newly added img tags
+          mutation.addedNodes.forEach((node) => {
+            if (((node as HTMLElement).tagName) === 'IMG')
+              addPrefixToImg(node as HTMLImageElement)
+          })
+        }
+        else if (mutation.type === 'attributes' && (mutation.target as HTMLElement).tagName === 'IMG') {
+          // if the src of an existing img tag changes, update the prefix
+          if (mutation.attributeName === 'src')
+            addPrefixToImg(mutation.target as HTMLImageElement)
+        }
+      }
+    })
+
+    // configure observation options
+    const config = {
+      childList: true,
+      attributes: true,
+      subtree: true,
+      attributeFilter: ['src'],
+    }
+
+    observer.observe(document.body, config)
+  }
+
+  useEffect(() => {
+    if (basePath)
+      handleRouteChange()
+  }, [pathname])
+
+  return null
+}