Add preview handling

pages/preview/+Page.vue

@@ -0,0 +1,59 @@
+<template>
+  <div class="preview-redirect">
+    <h1>Preview Handler</h1>
+    
+    <div v-if="error" class="error">
+      <h2>Debug Information</h2>
+      <p><strong>Error:</strong> {{ error }}</p>
+      <p v-if="pageContext"><strong>PageContext keys:</strong> {{ pageContext.join(', ') }}</p>
+      <pre v-if="urlParsed">{{ JSON.stringify(urlParsed, null, 2) }}</pre>
+    </div>
+    
+    <div v-else-if="redirectUrl">
+      <p>Redirecting to preview...</p>
+      <p>If you are not redirected automatically, <a :href="redirectUrl">click here</a>.</p>
+    </div>
+    
+    <div v-else>
+      <p>Processing preview request...</p>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { useData } from 'vike-vue/useData'
+import { onMounted } from 'vue'
+
+const data = useData()
+const { redirectUrl, error, pageContext, urlParsed } = data
+
+onMounted(() => {
+  if (redirectUrl) {
+    window.location.href = redirectUrl
+  }
+})
+</script>
+
+<style scoped>
+.preview-redirect {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  min-height: 50vh;
+  text-align: center;
+}
+
+h1 {
+  margin-bottom: 1rem;
+}
+
+a {
+  color: #007bff;
+  text-decoration: none;
+}
+
+a:hover {
+  text-decoration: underline;
+}
+</style>

pages/preview/+data.js

@@ -0,0 +1,65 @@
+import { redirect } from 'vike/abort'
+
+export const data = async (pageContext) => {
+    try {
+        // Extract URL parameters safely
+        const { urlParsed } = pageContext
+        const searchParams = urlParsed?.search || {}
+        
+        console.log('Preview route - pageContext keys:', Object.keys(pageContext))
+        console.log('Preview route - urlParsed:', urlParsed)
+        console.log('Preview route - searchParams:', searchParams)
+        
+        const { 
+            secret, 
+            path = '/', 
+            status = 'draft', 
+            documentId, 
+            uid 
+        } = searchParams
+        
+        // Validate preview secret
+        if (!secret || secret !== import.meta.env.VITE_PREVIEW_SECRET) {
+            console.log('Invalid secret:', secret, 'Expected:', import.meta.env.VITE_PREVIEW_SECRET)
+            throw redirect('/preview-unauthorized')
+        }
+        
+        // Build the preview URL path (not full URL since we're redirecting within same origin)
+        const previewPath = path || '/'
+        const previewUrl = new URL(previewPath, 'http://localhost')
+        
+        // Add preview parameters
+        previewUrl.searchParams.set('preview', 'true')
+        previewUrl.searchParams.set('status', status)
+        
+        // Optional: include document metadata for advanced preview functionality
+        if (documentId) {
+            previewUrl.searchParams.set('documentId', documentId)
+        }
+        if (uid) {
+            previewUrl.searchParams.set('uid', uid)
+        }
+        
+        const redirectUrl = previewUrl.pathname + previewUrl.search
+        console.log('Redirecting to:', redirectUrl)
+        
+        // Use Vike's redirect
+        throw redirect(redirectUrl)
+        
+    } catch (error) {
+        // If it's a redirect, let it pass through
+        if (error.redirectTo) {
+            throw error
+        }
+        
+        console.error('Preview data error:', error)
+        
+        // For debugging, let's not redirect on error, but show what went wrong
+        return {
+            redirectUrl: null,
+            error: error.message || 'Failed to process preview request',
+            pageContext: Object.keys(pageContext),
+            urlParsed: pageContext.urlParsed
+        }
+    }
+}