Fix files

rust-engine/Cargo.lock

@@ -1731,6 +1731,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "async-trait",
+ "base64",
  "bytes",
  "chrono",
  "dotenvy",

rust-engine/Cargo.toml

@@ -24,3 +24,4 @@ futures-util = "0.3"
 lazy_static = "1.4"
 bytes = "1.4"
 pdf-extract = "0.6"
+base64 = "0.22"

rust-engine/src/file_worker.rs

@@ -2,6 +2,7 @@ use crate::gemini_client::{demo_text_embedding, generate_text_with_model, DEMO_E
 use crate::vector;
 use crate::vector_db::QdrantClient;
 use anyhow::{anyhow, Context, Result};
+use base64::{engine::general_purpose::STANDARD as BASE64_STANDARD, Engine as _};
 use pdf_extract::extract_text;
 use sqlx::MySqlPool;
 use std::path::PathBuf;
@@ -87,17 +88,37 @@ impl FileWorker {
             warn!(file_id, %filename, %path, "extracted excerpt is empty; prompts may lack context");
         }
 
+        let (raw_base64, raw_truncated) = match read_file_base64(&path).await {
+            Ok(tuple) => tuple,
+            Err(err) => {
+                warn!(file_id, %filename, %path, error = ?err, "failed to read raw file bytes for prompt");
+                (String::new(), false)
+            }
+        };
+
         let excerpt_note = if truncated {
             "(excerpt truncated for prompt size)"
         } else {
             ""
         };
 
+        let raw_note = if raw_truncated {
+            "(base64 truncated to first 512KB)"
+        } else {
+            "(base64)"
+        };
+
         // Stage 1: Gemini 2.5 Flash for description
-        let desc_prompt = format!(
+        let mut desc_prompt = format!(
             "You are reviewing the PDF file '{filename}'. Use the following extracted text {excerpt_note} to produce a concise, factual description and key highlights that will help downstream search and reasoning.\n\n--- BEGIN EXCERPT ---\n{}\n--- END EXCERPT ---",
             file_excerpt
         );
+        if !raw_base64.is_empty() {
+            desc_prompt.push_str(&format!(
+                "\n\n--- BEGIN RAW FILE {raw_note} ---\n{}\n--- END RAW FILE ---",
+                raw_base64
+            ));
+        }
         let desc = generate_text_with_model("gemini-2.5-flash", &desc_prompt)
             .await
             .unwrap_or_else(|e| format!("[desc error: {}]", e));
@@ -110,10 +131,16 @@ impl FileWorker {
         .await?;
 
         // Stage 2: Gemini 2.5 Pro for deep vector graph data
-        let vector_prompt = format!(
+        let mut vector_prompt = format!(
             "You are constructing vector search metadata for the PDF file '{filename}'.\nCurrent description: {desc}\nUse the extracted text {excerpt_note} below to derive precise keywords, thematic clusters, and relationships that are explicitly supported by the content. Provide richly structured bullet points grouped by themes.\n\n--- BEGIN EXCERPT ---\n{}\n--- END EXCERPT ---",
             file_excerpt
         );
+        if !raw_base64.is_empty() {
+            vector_prompt.push_str(&format!(
+                "\n\n--- BEGIN RAW FILE {raw_note} ---\n{}\n--- END RAW FILE ---",
+                raw_base64
+            ));
+        }
         let vector_graph = generate_text_with_model("gemini-2.5-pro", &vector_prompt)
             .await
             .unwrap_or_else(|e| format!("[vector error: {}]", e));
@@ -158,6 +185,7 @@ impl FileWorker {
 
 // Maximum number of characters from the extracted text to include in prompts.
 const MAX_EXCERPT_CHARS: usize = 4000;
+const MAX_RAW_BYTES: usize = 512 * 1024; // limit base64 payload fed into prompts
 
 async fn extract_file_excerpt(path: &str) -> Result<(String, bool)> {
     let path_buf = PathBuf::from(path);
@@ -224,3 +252,18 @@ fn collapse_whitespace(input: &str) -> String {
     }
     output.trim().to_string()
 }
+
+async fn read_file_base64(path: &str) -> Result<(String, bool)> {
+    let bytes = tokio::fs::read(path).await?;
+    if bytes.is_empty() {
+        return Ok((String::new(), false));
+    }
+    let truncated = bytes.len() > MAX_RAW_BYTES;
+    let slice = if truncated {
+        &bytes[..MAX_RAW_BYTES]
+    } else {
+        &bytes[..]
+    };
+    let encoded = BASE64_STANDARD.encode(slice);
+    Ok((encoded, truncated))
+}

rust-engine/src/models.rs

@@ -11,6 +11,7 @@ pub struct FileRecord {
     pub created_at: Option<DateTime<Utc>>,
     pub pending_analysis: bool, // true if file is not yet ready for search
     pub analysis_status: String, // 'Queued', 'InProgress', 'Completed', 'Failed'
+    pub raw_url: Option<String>,
 }
 
 impl FileRecord {
@@ -28,6 +29,7 @@ impl FileRecord {
             created_at: None,
             pending_analysis: true,
             analysis_status: "Queued".to_string(),
+            raw_url: None,
         }
     }
 }

rust-engine/src/worker.rs

@@ -191,6 +191,7 @@ impl Worker {
                     "filename": filename,
                     "path": path,
                     "storage_url": storage_url,
+                    "raw_url": storage_url,
                     "description": description,
                     "analysis_status": analysis_status,
                     "score": score
@@ -223,6 +224,7 @@ impl Worker {
                 "filename": filename,
                 "path": path,
                 "storage_url": storage_url,
+                "raw_url": storage_url,
                 "description": description,
                 "analysis_status": analysis_status,
                 "score": serde_json::Value::Null

web-app/server.mjs

@@ -2,9 +2,7 @@ import express from 'express';
 import path from 'node:path';
 import helmet from 'helmet';
 import cors from 'cors';
-import http from 'node:http';
+import fetch from 'node-fetch';
-import https from 'node:https';
-import { URL } from 'node:url';
 import { fileURLToPath } from 'node:url';
 
 const __filename = fileURLToPath(import.meta.url);
@@ -17,58 +15,34 @@ const RUST_ENGINE_BASE =
   process.env.RUST_ENGINE_BASE ||
   process.env.RUST_ENGINE_URL ||
   'http://rust-engine:8000';
-const STORAGE_DIR = path.resolve(process.env.ASTRA_STORAGE || '/app/storage');
 
 app.set('trust proxy', true);
 app.use(helmet({ contentSecurityPolicy: false }));
 app.use(cors());
+app.use(express.json());
+
 app.get('/api/healthz', (_req, res) => {
   res.json({ status: 'ok', upstream: RUST_ENGINE_BASE });
 });
 
-// Proxy all /api/* calls (including POST bodies, multipart uploads, etc.)
+// Proxy minimal API needed by the UI to the rust-engine container
-app.use('/api', (req, res) => {
+app.post('/api/files/import-demo', async (req, res) => {
-  const targetUrl = new URL(req.originalUrl, RUST_ENGINE_BASE);
+  try {
-  const client = targetUrl.protocol === 'https:' ? https : http;
+    const qs = req.url.includes('?') ? req.url.substring(req.url.indexOf('?')) : '';
-
+    const url = `${RUST_ENGINE_BASE}/api/files/import-demo${qs}`;
-  const headers = { ...req.headers, host: targetUrl.host };
+    const upstream = await fetch(url, { method: 'POST', headers: { 'content-type': 'application/json' }, body: req.body ? JSON.stringify(req.body) : undefined });
-
+    const text = await upstream.text();
-  const proxyReq = client.request(
+    res.status(upstream.status).type(upstream.headers.get('content-type') || 'application/json').send(text);
-    targetUrl,
+  } catch (err) {
-    {
+    console.error('import-demo proxy failed:', err);
-      method: req.method,
+    res.status(502).json({ error: 'proxy_failed' });
-      headers,
+  }
-    },
-    (upstream) => {
-      res.status(upstream.statusCode || 502);
-      for (const [key, value] of Object.entries(upstream.headers)) {
-        if (typeof value !== 'undefined') {
-          res.setHeader(key, value);
-        }
-      }
-      upstream.pipe(res);
-    }
-  );
-
-  proxyReq.on('error', (err) => {
-    console.error('API proxy error:', err);
-    if (!res.headersSent) {
-      res.status(502).json({ error: 'proxy_failed' });
-    } else {
-      res.end();
-    }
-  });
-
-  req.pipe(proxyReq);
 });
 
 // Serve static frontend
 const distDir = path.resolve(__dirname, 'dist');
 app.use(express.static(distDir));
 
-// Expose imported files for the UI (read-only)
-app.use('/storage', express.static(STORAGE_DIR));
-
 // SPA fallback (Express 5 requires middleware instead of bare '*')
 app.use((req, res) => {
   res.sendFile(path.join(distDir, 'index.html'));