Dockerfile changes

services/summarizer.py

@@ -1 +1,37 @@
-"print('summarizer loaded')" 
+from utils.file_loader import extract_text
+from prompts.summarize_prompt import SUMMARY_PROMPT
+from llm.hf_llm import get_chat_model
+
+chat_model = get_chat_model()
+summarize_chain = SUMMARY_PROMPT | chat_model
+
+MAX_CHARS = 18_000
+
+def summarize_document(file):
+    if not file:
+        return "Please upload a document."
+
+    text = extract_text(file)
+
+    if text.startswith("❌"):
+        return text
+
+    if len(text.strip()) < 80:
+        return "Not enough meaningful text extracted."
+
+    warning = ""
+    if len(text) > MAX_CHARS:
+        text = text[:MAX_CHARS]
+        warning = "⚠️ Document truncated for processing.\n\n"
+
+    try:
+        response = summarize_chain.invoke({"text": text})
+        return warning + response.content.strip()
+
+    except Exception as e:
+        msg = str(e).lower()
+        if "token" in msg:
+            return "❌ Invalid or missing Hugging Face token."
+        if "rate" in msg:
+            return "❌ Rate limit exceeded. Try later."
+        return f"❌ Error: {str(e)}"