Initial commit - College Enquiry Chatbot

.gitignore

@@ -0,0 +1,6 @@
+venv/
+.env
+__pycache__/
+*.pyc
+feedback.json
+chat_log.json

.gradio/certificate.pem

@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----

app.py

@@ -0,0 +1,669 @@
+import os
+import json
+import shutil
+import warnings
+warnings.filterwarnings("ignore")
+
+from dotenv import load_dotenv
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import Chroma
+from langchain_groq import ChatGroq
+from langchain_core.prompts import PromptTemplate
+from langchain_core.output_parsers import StrOutputParser
+from langchain_community.document_loaders import PyPDFLoader
+from langchain_text_splitters import RecursiveCharacterTextSplitter
+from fastapi import FastAPI, UploadFile, File, Form, Request
+from fastapi.responses import HTMLResponse, RedirectResponse
+from pydantic import BaseModel
+from typing import List
+from datetime import datetime
+from collections import Counter
+import uvicorn
+
+load_dotenv()
+
+# ── Admin password (change this!) ──
+ADMIN_PASSWORD = "admin123"
+CHAT_LOG_FILE  = "chat_log.json"
+FEEDBACK_FILE  = "feedback.json"
+
+print("🔄 Loading knowledge base...")
+embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+vectordb = Chroma(persist_directory="./db", embedding_function=embeddings)
+retriever = vectordb.as_retriever(search_kwargs={"k": 6})
+
+print("🤖 Connecting to Groq LLM...")
+llm = ChatGroq(
+    model_name="llama-3.3-70b-versatile",
+    temperature=0.2,
+    api_key=os.getenv("GROQ_API_KEY")
+)
+
+prompt = PromptTemplate.from_template("""You are a helpful and friendly college enquiry assistant.
+Use ONLY the context below to answer the question.
+If the answer is not in the context, say "I don't have that information, please contact the college directly."
+Keep your answers clear and concise.
+
+IMPORTANT LANGUAGE RULE:
+- Detect the language of the "Current Question" below.
+- If the question is in Hindi (or contains Hindi/Devanagari words), respond FULLY in Hindi.
+- If the question is in English, respond in English.
+- Never mix languages in a single response.
+- If responding in Hindi, also translate the "I don't have that information" message to Hindi.
+
+Context:
+{context}
+
+Conversation History:
+{history}
+
+Current Question:
+{question}
+
+Answer:""")
+
+def format_docs(docs):
+    return "\n\n".join(doc.page_content for doc in docs)
+
+def format_history(history):
+    if not history:
+        return "No previous conversation."
+    lines = []
+    for h in history:
+        lines.append(f"Student: {h['user']}")
+        lines.append(f"Assistant: {h['bot']}")
+    return "\n".join(lines)
+
+def ask_with_memory(question: str, history: list) -> str:
+    docs = retriever.invoke(question)
+    context = format_docs(docs)
+    formatted_history = format_history(history)
+    chain = prompt | llm | StrOutputParser()
+    return chain.invoke({"context": context, "history": formatted_history, "question": question})
+
+def rebuild_knowledge_base(pdf_path: str):
+    global vectordb, retriever
+
+    loader = PyPDFLoader(pdf_path)
+    documents = loader.load()
+    splitter = RecursiveCharacterTextSplitter(chunk_size=1000, chunk_overlap=100)
+    chunks = splitter.split_documents(documents)
+    seen, unique_chunks = set(), []
+    for chunk in chunks:
+        text = chunk.page_content.strip()
+        if text not in seen:
+            seen.add(text)
+            unique_chunks.append(chunk)
+
+    # ── Delete all existing docs and re-add ──
+    try:
+        vectordb.delete_collection()
+    except Exception:
+        pass
+
+    import chromadb
+    from langchain_community.vectorstores import Chroma as ChromaStore
+    vectordb = ChromaStore.from_documents(
+        documents=unique_chunks,
+        embedding=embeddings,
+        persist_directory="./db"
+    )
+    vectordb.persist()
+    retriever = vectordb.as_retriever(search_kwargs={"k": 6})
+    print(f"✅ Knowledge base rebuilt with {len(unique_chunks)} unique chunks")
+
+def load_feedback():
+    if os.path.exists(FEEDBACK_FILE):
+        with open(FEEDBACK_FILE, "r") as f:
+            return json.load(f)
+    return []
+
+def save_feedback(data):
+    with open(FEEDBACK_FILE, "w") as f:
+        json.dump(data, f, indent=2)
+
+def load_chat_log():
+    if os.path.exists(CHAT_LOG_FILE):
+        with open(CHAT_LOG_FILE, "r") as f:
+            return json.load(f)
+    return []
+
+def save_chat_log(data):
+    with open(CHAT_LOG_FILE, "w") as f:
+        json.dump(data, f, indent=2)
+
+app = FastAPI()
+
+class Message(BaseModel):
+    message: str
+    history: List[dict] = []
+
+class Feedback(BaseModel):
+    question: str
+    answer: str
+    rating: str
+
+@app.post("/ask")
+async def ask(payload: Message):
+    if not payload.message.strip():
+        return {"answer": "Please ask a question! / कृपया एक प्रश्न पूछें!"}
+    print(f"❓ Question: {payload.message}")
+    answer = ask_with_memory(payload.message, payload.history)
+    print(f"✅ Answer: {answer}")
+    log = load_chat_log()
+    log.append({"question": payload.message, "answer": answer, "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")})
+    save_chat_log(log)
+    return {"answer": answer}
+
+@app.post("/feedback")
+async def feedback(payload: Feedback):
+    data = load_feedback()
+    data.append({"question": payload.question, "answer": payload.answer, "rating": payload.rating, "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")})
+    save_feedback(data)
+    print(f"{'👍' if payload.rating == 'up' else '👎'} Feedback: {payload.question[:50]}")
+    return {"status": "saved"}
+
+# ── Admin login page ──
+@app.get("/admin", response_class=HTMLResponse)
+async def admin_login():
+    return HTMLResponse(content="""<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8"/>
+<meta name="viewport" content="width=device-width,initial-scale=1.0"/>
+<title>Admin Login</title>
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap" rel="stylesheet"/>
+<style>
+  *{box-sizing:border-box;margin:0;padding:0}
+  body{background:#f0faf4;font-family:'Plus Jakarta Sans',sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center}
+  .card{background:white;border:1.5px solid #bbf7d0;border-radius:24px;padding:2.5rem 2rem;width:100%;max-width:380px;box-shadow:0 4px 24px rgba(34,197,94,.1);text-align:center}
+  .icon{font-size:2.5rem;margin-bottom:1rem}
+  h1{font-size:1.4rem;font-weight:800;color:#0a2e1a;margin-bottom:.3rem}
+  p{font-size:.8rem;color:#6b7280;margin-bottom:1.5rem}
+  input{width:100%;border:1.5px solid #bbf7d0;border-radius:12px;padding:.7rem 1rem;font-family:'Plus Jakarta Sans',sans-serif;font-size:.9rem;color:#14532d;outline:none;margin-bottom:1rem;transition:border .2s}
+  input:focus{border-color:#22c55e}
+  button{width:100%;background:#16a34a;border:none;border-radius:12px;color:white;font-family:'Plus Jakarta Sans',sans-serif;font-weight:700;font-size:.9rem;padding:.75rem;cursor:pointer;transition:all .2s}
+  button:hover{background:#15803d;transform:translateY(-1px)}
+  .err{color:#dc2626;font-size:.8rem;margin-top:.5rem;display:none}
+  .back{display:inline-block;margin-top:1rem;font-size:.78rem;color:#16a34a;text-decoration:none;font-weight:600}
+</style>
+</head>
+<body>
+<div class="card">
+  <div class="icon">🔐</div>
+  <h1>Admin Panel</h1>
+  <p>Enter your admin password to continue</p>
+  <form method="POST" action="/admin/login">
+    <input type="password" name="password" placeholder="Enter admin password" required autofocus/>
+    <button type="submit">Login →</button>
+  </form>
+  <div class="err" id="err">Incorrect password. Try again.</div>
+  <a href="/" class="back">← Back to Chatbot</a>
+</div>
+</body>
+</html>""")
+
+@app.post("/admin/login", response_class=HTMLResponse)
+async def admin_login_post(request: Request, password: str = Form(...)):
+    if password != ADMIN_PASSWORD:
+        return HTMLResponse(content="""<!DOCTYPE html>
+<html><head><meta charset="UTF-8"/>
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@700&display=swap" rel="stylesheet"/>
+<style>*{box-sizing:border-box;margin:0;padding:0}body{background:#f0faf4;font-family:'Plus Jakarta Sans',sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center}.card{background:white;border:1.5px solid #fecaca;border-radius:24px;padding:2.5rem 2rem;width:100%;max-width:380px;text-align:center}.icon{font-size:2.5rem;margin-bottom:1rem}h1{color:#dc2626;font-size:1.2rem;margin-bottom:1rem}a{display:inline-block;background:#16a34a;color:white;padding:.6rem 1.4rem;border-radius:10px;text-decoration:none;font-weight:700;font-size:.85rem}</style>
+</head><body><div class="card"><div class="icon">❌</div><h1>Incorrect Password</h1><a href="/admin">Try Again</a></div></body></html>""")
+    return RedirectResponse(url=f"/admin/panel?pwd={password}", status_code=303)
+
+@app.get("/admin/panel", response_class=HTMLResponse)
+async def admin_panel(pwd: str = ""):
+    if pwd != ADMIN_PASSWORD:
+        return RedirectResponse(url="/admin")
+
+    feedback_data = load_feedback()
+    chat_data = load_chat_log()
+    total_chats = len(chat_data)
+    thumbs_up = sum(1 for d in feedback_data if d["rating"] == "up")
+    thumbs_down = sum(1 for d in feedback_data if d["rating"] == "down")
+    total_fb = len(feedback_data)
+    satisfaction = round((thumbs_up / total_fb * 100) if total_fb > 0 else 0)
+
+    recent_chats = chat_data[-8:][::-1]
+    chat_rows = ""
+    for d in recent_chats:
+        q = d['question'][:55] + ('...' if len(d['question']) > 55 else '')
+        a = d['answer'][:80] + ('...' if len(d['answer']) > 80 else '')
+        chat_rows += f"<tr><td>{d['timestamp']}</td><td>{q}</td><td>{a}</td></tr>"
+
+    chat_table = f"<table><thead><tr><th>Time</th><th>Question</th><th>Answer</th></tr></thead><tbody>{chat_rows}</tbody></table>" if chat_rows else "<div class='empty'>No chats yet!</div>"
+
+    pdf_exists = os.path.exists("data/college_info.pdf")
+    pdf_status = "✅ college_info.pdf found" if pdf_exists else "⚠️ No PDF found in data/"
+    db_exists = os.path.exists("./db") and len(os.listdir("./db")) > 0
+    db_status = "✅ Vector database ready" if db_exists else "⚠️ Database not built"
+
+    return HTMLResponse(content=f"""<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8"/>
+<meta name="viewport" content="width=device-width,initial-scale=1.0"/>
+<title>Admin Panel</title>
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap" rel="stylesheet"/>
+<style>
+  *{{box-sizing:border-box;margin:0;padding:0}}
+  body{{background:#f0faf4;font-family:'Plus Jakarta Sans',sans-serif;padding:2rem 1rem}}
+  .header{{background:#0a2e1a;color:#4ade80;padding:1.5rem 2rem;border-radius:16px;margin-bottom:1.5rem;display:flex;justify-content:space-between;align-items:center}}
+  .header h1{{font-size:1.4rem;font-weight:800}}
+  .header-links{{display:flex;gap:.6rem}}
+  .hlink{{background:rgba(74,222,128,.15);border:1px solid rgba(74,222,128,.3);border-radius:8px;color:#4ade80;font-size:.72rem;font-weight:700;padding:.35rem .8rem;text-decoration:none;transition:all .2s}}
+  .hlink:hover{{background:rgba(74,222,128,.25)}}
+  .grid{{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:1.5rem}}
+  .stat{{background:white;border:1.5px solid #bbf7d0;border-radius:16px;padding:1.2rem;text-align:center;box-shadow:0 2px 12px rgba(34,197,94,.08)}}
+  .stat .val{{font-size:2rem;font-weight:800;color:#16a34a}}
+  .stat .lbl{{font-size:.72rem;color:#6b7280;font-weight:600;text-transform:uppercase;letter-spacing:.08em;margin-top:.3rem}}
+  .section{{background:white;border:1.5px solid #bbf7d0;border-radius:16px;padding:1.4rem;margin-bottom:1.5rem}}
+  .section h2{{font-size:.85rem;font-weight:700;color:#16a34a;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem}}
+  .status-row{{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}}
+  .status-badge{{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:.4rem .8rem;font-size:.8rem;color:#14532d;font-weight:600}}
+  .upload-form{{display:flex;flex-direction:column;gap:.8rem}}
+  .file-input{{border:2px dashed #bbf7d0;border-radius:12px;padding:1.5rem;text-align:center;cursor:pointer;color:#16a34a;font-size:.85rem;font-weight:600;transition:all .2s}}
+  .file-input:hover{{border-color:#22c55e;background:#f0fdf4}}
+  .btn{{border:none;border-radius:12px;font-family:'Plus Jakarta Sans',sans-serif;font-weight:700;font-size:.85rem;padding:.65rem 1.3rem;cursor:pointer;transition:all .2s;white-space:nowrap}}
+  .btn-green{{background:#16a34a;color:white;box-shadow:0 2px 10px rgba(22,163,74,.3)}}
+  .btn-green:hover{{background:#15803d;transform:translateY(-1px)}}
+  .btn-red{{background:white;border:1.5px solid #fecaca;color:#dc2626}}
+  .btn-red:hover{{background:#fee2e2}}
+  .btn-row{{display:flex;gap:.7rem;flex-wrap:wrap}}
+  table{{width:100%;border-collapse:collapse;font-size:.82rem}}
+  th{{background:#f0fdf4;color:#16a34a;font-weight:700;padding:.6rem .8rem;text-align:left;font-size:.72rem;text-transform:uppercase}}
+  td{{padding:.55rem .8rem;border-top:1px solid #f0fdf4;color:#374151;vertical-align:top;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
+  .empty{{text-align:center;color:#9ca3af;padding:2rem;font-size:.88rem}}
+  .alert{{background:#dcfce7;border:1px solid #86efac;border-radius:10px;padding:.8rem 1rem;font-size:.82rem;color:#14532d;font-weight:600;display:none;margin-top:.5rem}}
+  .alert.show{{display:block}}
+</style>
+</head>
+<body>
+<div class="header">
+  <h1>🛠️ Admin Panel</h1>
+  <div class="header-links">
+    <a href="/dashboard?pwd={pwd}" class="hlink">📊 Dashboard</a>
+    <a href="/" class="hlink">← Chatbot</a>
+  </div>
+</div>
+
+<!-- Stats -->
+<div class="grid">
+  <div class="stat"><div class="val">{total_chats}</div><div class="lbl">Total Chats</div></div>
+  <div class="stat"><div class="val" style="color:#16a34a">👍 {thumbs_up}</div><div class="lbl">Helpful</div></div>
+  <div class="stat"><div class="val" style="color:#dc2626">👎 {thumbs_down}</div><div class="lbl">Not Helpful</div></div>
+  <div class="stat"><div class="val">{satisfaction}%</div><div class="lbl">Satisfaction</div></div>
+</div>
+
+<!-- Knowledge Base Management -->
+<div class="section">
+  <h2>📚 Knowledge Base Management</h2>
+  <div class="status-row">
+    <div class="status-badge">{pdf_status}</div>
+    <div class="status-badge">{db_status}</div>
+  </div>
+  <div class="upload-form">
+    <p style="font-size:.82rem;color:#6b7280;margin-bottom:.5rem">Upload a new college PDF to update the knowledge base. This will automatically rebuild the vector database.</p>
+    <form method="POST" action="/admin/upload?pwd={pwd}" enctype="multipart/form-data">
+  <input type="file" name="file" accept=".pdf" required style="border:2px dashed #bbf7d0;border-radius:12px;padding:1rem;width:100%;font-size:.85rem;color:#14532d;background:#f0fdf4;cursor:pointer;margin-bottom:.5rem"/>
+  <div class="btn-row" style="margin-top:.5rem">
+    <button type="submit" class="btn btn-green">📤 Upload & Rebuild Knowledge Base</button>
+  </div>
+</form>
+    <div class="alert" id="upload-alert">✅ PDF uploaded and knowledge base rebuilt successfully!</div>
+  </div>
+</div>
+
+<!-- Data Management -->
+<div class="section">
+  <h2>🗂️ Data Management</h2>
+  <p style="font-size:.82rem;color:#6b7280;margin-bottom:1rem">Manage stored feedback and chat logs. These actions cannot be undone.</p>
+  <div class="btn-row">
+    <form method="POST" action="/admin/clear-feedback?pwd={pwd}" onsubmit="return confirm('Clear all feedback data?')">
+      <button type="submit" class="btn btn-red">🗑️ Clear Feedback Data</button>
+    </form>
+    <form method="POST" action="/admin/clear-chats?pwd={pwd}" onsubmit="return confirm('Clear all chat logs?')">
+      <button type="submit" class="btn btn-red">🗑️ Clear Chat Logs</button>
+    </form>
+  </div>
+</div>
+
+<!-- Recent Chat Logs -->
+<div class="section">
+  <h2>💬 Recent Chat Logs</h2>
+  {chat_table}
+</div>
+
+<script>
+  // Show upload success if redirected with success param
+  if(window.location.search.includes('success=1')){{
+    const a=document.getElementById('upload-alert');a.classList.add('show');
+    setTimeout(()=>a.classList.remove('show'),4000);
+  }}
+</script>
+</body>
+</html>""")
+
+@app.post("/admin/upload")
+async def admin_upload(pwd: str = "", file: UploadFile = File(default=None)):
+    if pwd != ADMIN_PASSWORD:
+        return RedirectResponse(url="/admin")
+    if file is None or file.filename == "":
+        return RedirectResponse(url=f"/admin/panel?pwd={pwd}&error=1", status_code=303)
+    os.makedirs("data", exist_ok=True)
+    pdf_path = "data/college_info.pdf"
+    with open(pdf_path, "wb") as f:
+        content = await file.read()
+        f.write(content)
+    print(f"📄 New PDF uploaded: {file.filename}")
+    rebuild_knowledge_base(pdf_path)
+    return RedirectResponse(url=f"/admin/panel?pwd={pwd}&success=1", status_code=303)
+
+@app.post("/admin/clear-feedback")
+async def clear_feedback(pwd: str = ""):
+    if pwd != ADMIN_PASSWORD:
+        return RedirectResponse(url="/admin")
+    save_feedback([])
+    print("🗑️ Feedback data cleared")
+    return RedirectResponse(url=f"/admin/panel?pwd={pwd}", status_code=303)
+
+@app.post("/admin/clear-chats")
+async def clear_chats(pwd: str = ""):
+    if pwd != ADMIN_PASSWORD:
+        return RedirectResponse(url="/admin")
+    save_chat_log([])
+    print("🗑️ Chat logs cleared")
+    return RedirectResponse(url=f"/admin/panel?pwd={pwd}", status_code=303)
+
+@app.get("/dashboard", response_class=HTMLResponse)
+async def dashboard():
+    data = load_feedback()
+    total = len(data)
+    thumbs_up = sum(1 for d in data if d["rating"] == "up")
+    thumbs_down = sum(1 for d in data if d["rating"] == "down")
+    satisfaction = round((thumbs_up / total * 100) if total > 0 else 0)
+    sat_color = "#16a34a" if satisfaction >= 70 else "#f59e0b" if satisfaction >= 40 else "#dc2626"
+    recent = data[-10:][::-1]
+    rows = ""
+    for d in recent:
+        emoji = "👍" if d["rating"] == "up" else "👎"
+        color = "#16a34a" if d["rating"] == "up" else "#dc2626"
+        q = d['question'][:60] + ('...' if len(d['question']) > 60 else '')
+        rows += f"<tr><td>{d['timestamp']}</td><td>{q}</td><td style='color:{color};font-size:1.2rem'>{emoji}</td></tr>"
+    q_counts = Counter(d["question"] for d in data)
+    top_questions = q_counts.most_common(5)
+    top_q_rows = ""
+    for q, count in top_questions:
+        top_q_rows += f"<li><span>{q[:55]}{'...' if len(q)>55 else ''}</span><b>{count}x</b></li>"
+    table_html = f"<table><thead><tr><th>Time</th><th>Question</th><th>Rating</th></tr></thead><tbody>{rows}</tbody></table>" if rows else "<div class='empty'>No feedback yet!</div>"
+    top_html = f"<ul class='top-q-list'>{top_q_rows}</ul>" if top_q_rows else "<div class='empty'>No data yet!</div>"
+    return HTMLResponse(content=f"""<!DOCTYPE html>
+<html lang="en"><head><meta charset="UTF-8"/><meta name="viewport" content="width=device-width,initial-scale=1.0"/>
+<title>Dashboard</title>
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap" rel="stylesheet"/>
+<style>
+  *{{box-sizing:border-box;margin:0;padding:0}}body{{background:#f0faf4;font-family:'Plus Jakarta Sans',sans-serif;padding:2rem 1rem}}
+  .header{{background:#0a2e1a;color:#4ade80;text-align:center;padding:1.5rem;border-radius:16px;margin-bottom:1.5rem}}
+  .header h1{{font-size:1.6rem;font-weight:800}}.header p{{color:#34d399;font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;margin-top:.3rem}}
+  .back-btn{{display:inline-block;margin-bottom:1rem;background:white;border:1.5px solid #bbf7d0;border-radius:10px;color:#16a34a;font-weight:700;font-size:.82rem;padding:.4rem 1rem;text-decoration:none}}
+  .back-btn:hover{{background:#16a34a;color:white}}
+  .stats-grid{{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:1.5rem}}
+  .stat-card{{background:white;border:1.5px solid #bbf7d0;border-radius:16px;padding:1.2rem;text-align:center;box-shadow:0 2px 12px rgba(34,197,94,.08)}}
+  .stat-card .value{{font-size:2.2rem;font-weight:800;color:#16a34a}}.stat-card .label{{font-size:.75rem;color:#6b7280;font-weight:600;text-transform:uppercase;letter-spacing:.08em;margin-top:.3rem}}
+  .section{{background:white;border:1.5px solid #bbf7d0;border-radius:16px;padding:1.4rem;margin-bottom:1.5rem}}
+  .section h2{{font-size:.85rem;font-weight:700;color:#16a34a;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem}}
+  table{{width:100%;border-collapse:collapse;font-size:.85rem}}th{{background:#f0fdf4;color:#16a34a;font-weight:700;padding:.6rem .8rem;text-align:left;font-size:.75rem;text-transform:uppercase}}
+  td{{padding:.6rem .8rem;border-top:1px solid #f0fdf4;color:#374151;vertical-align:top}}
+  .top-q-list{{list-style:none;display:flex;flex-direction:column;gap:.6rem}}
+  .top-q-list li{{display:flex;justify-content:space-between;align-items:center;padding:.6rem .8rem;background:#f0fdf4;border-radius:10px;font-size:.85rem}}
+  .top-q-list li b{{color:#16a34a;font-weight:800;white-space:nowrap;margin-left:.5rem}}
+  .empty{{text-align:center;color:#9ca3af;padding:2rem;font-size:.9rem}}
+  .progress-bar{{background:#dcfce7;border-radius:99px;height:10px;margin-top:.5rem;overflow:hidden}}
+  .progress-fill{{background:{sat_color};height:100%;border-radius:99px;width:{satisfaction}%}}
+</style></head><body>
+<a href="/" class="back-btn">← Back to Chatbot</a>
+<div class="header"><h1>📊 Analytics Dashboard</h1><p>College Enquiry Assistant — Live Feedback Stats</p></div>
+<div class="stats-grid">
+  <div class="stat-card"><div class="value">{total}</div><div class="label">Total Responses</div></div>
+  <div class="stat-card"><div class="value" style="color:#16a34a">👍 {thumbs_up}</div><div class="label">Helpful</div></div>
+  <div class="stat-card"><div class="value" style="color:#dc2626">👎 {thumbs_down}</div><div class="label">Not Helpful</div></div>
+  <div class="stat-card"><div class="value" style="color:{sat_color}">{satisfaction}%</div><div class="label">Satisfaction</div><div class="progress-bar"><div class="progress-fill"></div></div></div>
+</div>
+<div class="section"><h2>🔥 Most Asked Questions</h2>{top_html}</div>
+<div class="section"><h2>🕐 Recent Feedback</h2>{table_html}</div>
+</body></html>""")
+
+@app.get("/", response_class=HTMLResponse)
+async def home():
+    return HTMLResponse(content="""<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8"/>
+<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+<title>College Enquiry Assistant</title>
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap" rel="stylesheet"/>
+<style>
+  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
+  body{background:#f0faf4;font-family:'Plus Jakarta Sans',sans-serif;min-height:100vh;display:flex;flex-direction:column;align-items:center}
+  .header{width:100%;background:#0a2e1a;padding:1.8rem 2rem;text-align:center;border-radius:0 0 28px 28px;margin-bottom:1.5rem;position:relative}
+  .header h1{font-size:2rem;font-weight:800;color:#4ade80;letter-spacing:-.02em;margin-bottom:.3rem}
+  .header p{color:#34d399;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;opacity:.85}
+  .header-links{position:absolute;top:1rem;right:1.2rem;display:flex;gap:.5rem}
+  .hlink{background:rgba(74,222,128,.15);border:1px solid rgba(74,222,128,.3);border-radius:8px;color:#4ade80;font-size:.68rem;font-weight:700;padding:.3rem .7rem;text-decoration:none;letter-spacing:.05em;transition:all .2s}
+  .hlink:hover{background:rgba(74,222,128,.25)}
+  .container{width:100%;max-width:780px;padding:0 1rem 2rem;display:flex;flex-direction:column;gap:1rem}
+  .chat-window{background:white;border:1.5px solid #bbf7d0;border-radius:20px;height:460px;overflow-y:auto;padding:1.2rem;display:flex;flex-direction:column;gap:1rem;box-shadow:0 4px 24px rgba(34,197,94,.08)}
+  .chat-window::-webkit-scrollbar{width:5px}.chat-window::-webkit-scrollbar-track{background:#f0fdf4}.chat-window::-webkit-scrollbar-thumb{background:#86efac;border-radius:4px}
+  .empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem}
+  .empty-state .icon{font-size:2.5rem}
+  .empty-state p{font-size:.9rem;font-weight:500;color:#4ade80}
+  .msg-row{display:flex;align-items:flex-end;gap:.6rem}.msg-row.user{flex-direction:row-reverse}
+  .avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;flex-shrink:0}
+  .avatar.bot{background:#0a2e1a}.avatar.user{background:#16a34a}
+  .bubble-wrap{display:flex;flex-direction:column;gap:.3rem;max-width:75%}.msg-row.user .bubble-wrap{align-items:flex-end}
+  .bubble{padding:.8rem 1.1rem;font-size:.93rem;line-height:1.7}
+  .bubble.user{background:#0a2e1a;color:white;border-radius:18px 18px 4px 18px}
+  .bubble.bot{background:#f0fdf4;color:#14532d;border-radius:18px 18px 18px 4px;border-left:3px solid #22c55e}
+  .feedback-row{display:flex;gap:.4rem;padding-left:.3rem;align-items:center}
+  .fb-btn{background:white;border:1px solid #bbf7d0;border-radius:8px;font-size:.85rem;padding:.2rem .6rem;cursor:pointer;transition:all .2s;color:#6b7280}
+  .fb-btn:hover{transform:scale(1.15)}.fb-btn.up.selected{background:#dcfce7;border-color:#16a34a}.fb-btn.down.selected{background:#fee2e2;border-color:#dc2626}
+  .fb-thanks{font-size:.72rem;color:#16a34a;font-weight:600;display:none}
+  .typing-bubble{background:#f0fdf4;border-radius:18px 18px 18px 4px;border-left:3px solid #22c55e;padding:.8rem 1.2rem;display:flex;gap:5px;align-items:center}
+  .dot{width:7px;height:7px;background:#22c55e;border-radius:50%;animation:bounce 1.2s infinite}
+  .dot:nth-child(2){animation-delay:.2s}.dot:nth-child(3){animation-delay:.4s}
+  @keyframes bounce{0%,80%,100%{transform:translateY(0)}40%{transform:translateY(-6px)}}
+  .input-area{background:white;border:1.5px solid #22c55e;border-radius:16px;padding:.5rem .5rem .5rem 1rem;display:flex;align-items:center;gap:.6rem;box-shadow:0 2px 16px rgba(34,197,94,.1)}
+  .input-area textarea{flex:1;border:none;outline:none;background:transparent;color:#14532d;font-family:'Plus Jakarta Sans',sans-serif;font-size:.95rem;resize:none;height:44px;padding-top:.6rem;line-height:1.5}
+  .input-area textarea::placeholder{color:#4ade80;font-weight:500}
+  .btn-send{background:#16a34a;border:none;border-radius:12px;color:white;font-family:'Plus Jakarta Sans',sans-serif;font-weight:700;font-size:.88rem;padding:.65rem 1.3rem;cursor:pointer;transition:all .2s;box-shadow:0 2px 10px rgba(22,163,74,.3);white-space:nowrap}
+  .btn-send:hover{background:#15803d;transform:translateY(-1px)}.btn-send:disabled{background:#86efac;cursor:not-allowed;transform:none}
+  .btn-clear{background:white;border:1.5px solid #bbf7d0;border-radius:12px;color:#16a34a;font-family:'Plus Jakarta Sans',sans-serif;font-weight:600;font-size:.85rem;padding:.65rem 1rem;cursor:pointer;transition:all .2s}
+  .btn-clear:hover{border-color:#f87171;color:#dc2626;background:#fff5f5}
+  .btn-voice{background:white;border:1.5px solid #bbf7d0;border-radius:12px;font-size:1.1rem;padding:.65rem .9rem;cursor:pointer;transition:all .2s;white-space:nowrap;line-height:1}
+  .btn-voice:hover{background:#f0fdf4;border-color:#22c55e}
+  .btn-voice.listening{background:#16a34a;border-color:#16a34a;animation:pulse 1s infinite}
+  @keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(22,163,74,.4)}50%{box-shadow:0 0 0 8px rgba(22,163,74,0)}}
+  .voice-status{display:none;text-align:center;font-size:.78rem;color:#16a34a;font-weight:600;letter-spacing:.05em;padding:.3rem 0}
+  .voice-status.visible{display:block}
+  .bottom-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem}
+  .speaker-row{display:flex;align-items:center;gap:.5rem;font-size:.78rem;color:#4ade80;font-weight:600;letter-spacing:.05em;text-transform:uppercase}
+  .toggle-switch{position:relative;width:36px;height:20px}.toggle-switch input{opacity:0;width:0;height:0}
+  .toggle-slider{position:absolute;cursor:pointer;inset:0;background:#bbf7d0;border-radius:20px;transition:.3s}
+  .toggle-slider:before{content:"";position:absolute;width:14px;height:14px;left:3px;bottom:3px;background:white;border-radius:50%;transition:.3s}
+  input:checked+.toggle-slider{background:#16a34a}input:checked+.toggle-slider:before{transform:translateX(16px)}
+  .memory-badge{font-size:.72rem;color:#16a34a;font-weight:700;background:#dcfce7;border:1px solid #bbf7d0;border-radius:50px;padding:.25rem .7rem;letter-spacing:.04em}
+  .lang-row{display:flex;align-items:center;gap:.5rem}
+  .lang-btn{background:white;border:1.5px solid #bbf7d0;border-radius:8px;font-size:.78rem;font-weight:700;padding:.3rem .7rem;cursor:pointer;transition:all .2s;color:#6b7280}
+  .lang-btn.active{background:#16a34a;border-color:#16a34a;color:white}
+  .examples-label{color:#16a34a;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:.5rem}
+  .examples-row{display:flex;flex-wrap:wrap;gap:.5rem}
+  .chip{background:white;border:1.5px solid #bbf7d0;border-radius:50px;color:#15803d;font-family:'Plus Jakarta Sans',sans-serif;font-size:.8rem;font-weight:600;padding:.4rem 1rem;cursor:pointer;transition:all .2s}
+  .chip:hover{background:#16a34a;border-color:#16a34a;color:white;transform:translateY(-1px)}
+</style>
+</head>
+<body>
+<div class="header">
+  <h1>🎓 College Enquiry Assistant</h1>
+  <p>Powered by Groq &nbsp;·&nbsp; LLaMA 3.3 &nbsp;·&nbsp; RAG</p>
+  <div class="header-links">
+    <a href="/dashboard" class="hlink">📊 Dashboard</a>
+    <a href="/admin" class="hlink">🛠️ Admin</a>
+  </div>
+</div>
+<div class="container">
+  <div class="chat-window" id="chat-window">
+    <div class="empty-state" id="empty-state">
+      <div class="icon">🎓</div>
+      <p id="empty-text">Ask me anything about the college</p>
+    </div>
+  </div>
+  <div class="voice-status" id="voice-status">🎤 Listening... / सुन रहा हूँ...</div>
+  <div class="input-area">
+    <textarea id="msg-input" placeholder="Ask about courses, fees, admissions..." onkeydown="handleKey(event)"></textarea>
+    <button class="btn-voice" id="voice-btn" onclick="toggleVoice()" title="Click to speak">🎤</button>
+    <button class="btn-send" id="send-btn" onclick="sendMessage()">Send ➤</button>
+    <button class="btn-clear" onclick="clearChat()">✕</button>
+  </div>
+  <div class="bottom-row">
+    <div class="speaker-row">
+      <label class="toggle-switch"><input type="checkbox" id="speaker-toggle" checked><span class="toggle-slider"></span></label>
+      🔊 Read aloud
+    </div>
+    <div class="lang-row">
+      <span style="font-size:.72rem;color:#4ade80;font-weight:700;text-transform:uppercase;letter-spacing:.05em">🌐 Lang:</span>
+      <button class="lang-btn active" id="btn-en" onclick="setLang('en')">EN</button>
+      <button class="lang-btn" id="btn-hi" onclick="setLang('hi')">हि</button>
+    </div>
+    <div class="memory-badge" id="memory-badge">🧠 Memory: 0 exchanges</div>
+  </div>
+  <div>
+    <div class="examples-label" id="examples-label">✦ Quick questions</div>
+    <div class="examples-row" id="examples-row">
+      <button class="chip" onclick="useExample(this)">What courses are offered?</button>
+      <button class="chip" onclick="useExample(this)">What are the admission requirements?</button>
+      <button class="chip" onclick="useExample(this)">What is the fee structure?</button>
+      <button class="chip" onclick="useExample(this)">Is hostel facility available?</button>
+      <button class="chip" onclick="useExample(this)">What is the college address?</button>
+    </div>
+  </div>
+</div>
+<script>
+  const chatWindow=document.getElementById('chat-window');
+  const msgInput=document.getElementById('msg-input');
+  const sendBtn=document.getElementById('send-btn');
+  const emptyState=document.getElementById('empty-state');
+  const voiceStatus=document.getElementById('voice-status');
+  const speakerToggle=document.getElementById('speaker-toggle');
+  const memoryBadge=document.getElementById('memory-badge');
+  let conversationHistory=[],lastQuestion='',currentLang='en';
+
+  const langConfig={
+    en:{placeholder:'Ask about courses, fees, admissions, hostel...',emptyText:'Ask me anything about the college',examplesLabel:'✦ Quick questions',voiceStatus:'🎤 Listening... speak your question',chips:['What courses are offered?','What are the admission requirements?','What is the fee structure?','Is hostel facility available?','What is the college address?'],speechLang:'en-IN',memoryText:(n)=>`🧠 Memory: ${n} exchange${n!==1?'s':''}`},
+    hi:{placeholder:'कोर्स, फीस, एडमिशन के बारे में पूछें...',emptyText:'कॉलेज के बारे में कुछ भी पूछें',examplesLabel:'✦ जल्दी सवाल',voiceStatus:'🎤 सुन रहा हूँ... बोलें',chips:['कौन से कोर्स उपलब्ध हैं?','एडमिशन की योग्यता क्या है?','फीस कितनी है?','क्या हॉस्टल की सुविधा है?','कॉलेज का पता क्या है?'],speechLang:'hi-IN',memoryText:(n)=>`🧠 याददाश्त: ${n} बातचीत`}
+  };
+
+  function setLang(lang){
+    currentLang=lang;const cfg=langConfig[lang];
+    document.getElementById('btn-en').classList.toggle('active',lang==='en');
+    document.getElementById('btn-hi').classList.toggle('active',lang==='hi');
+    msgInput.placeholder=cfg.placeholder;
+    document.getElementById('empty-text').textContent=cfg.emptyText;
+    document.getElementById('examples-label').textContent=cfg.examplesLabel;
+    voiceStatus.textContent=cfg.voiceStatus;
+    const row=document.getElementById('examples-row');row.innerHTML='';
+    cfg.chips.forEach(c=>{const btn=document.createElement('button');btn.className='chip';btn.textContent=c;btn.onclick=()=>useExample(btn);row.appendChild(btn);});
+    if(recognition)recognition.lang=cfg.speechLang;
+    updateMemoryBadge();
+  }
+
+  function updateMemoryBadge(){const n=conversationHistory.length;memoryBadge.textContent=langConfig[currentLang].memoryText(n);}
+  function handleKey(e){if(e.key==='Enter'&&!e.shiftKey){e.preventDefault();sendMessage();}}
+  function useExample(btn){msgInput.value=btn.textContent;msgInput.focus();}
+
+  function clearChat(){
+    chatWindow.innerHTML='';chatWindow.appendChild(emptyState);emptyState.style.display='flex';
+    conversationHistory=[];lastQuestion='';updateMemoryBadge();
+    window.speechSynthesis&&window.speechSynthesis.cancel();
+  }
+
+  function appendMessage(role,text){
+    emptyState.style.display='none';
+    const row=document.createElement('div');row.className=`msg-row ${role}`;
+    const avatar=document.createElement('div');avatar.className=`avatar ${role}`;avatar.textContent=role==='bot'?'🎓':'🧑';
+    const wrap=document.createElement('div');wrap.className='bubble-wrap';
+    const bubble=document.createElement('div');bubble.className=`bubble ${role}`;bubble.textContent=text;
+    wrap.appendChild(bubble);
+    if(role==='bot'){
+      const fbRow=document.createElement('div');fbRow.className='feedback-row';
+      const upBtn=document.createElement('button');upBtn.className='fb-btn up';upBtn.textContent='👍';
+      const downBtn=document.createElement('button');downBtn.className='fb-btn down';downBtn.textContent='👎';
+      const thanks=document.createElement('span');thanks.className='fb-thanks';thanks.textContent=currentLang==='hi'?'धन्यवाद!':'Thanks!';
+      const q=lastQuestion;
+      upBtn.onclick=()=>submitFeedback(q,text,'up',upBtn,downBtn,thanks);
+      downBtn.onclick=()=>submitFeedback(q,text,'down',upBtn,downBtn,thanks);
+      fbRow.appendChild(upBtn);fbRow.appendChild(downBtn);fbRow.appendChild(thanks);wrap.appendChild(fbRow);
+    }
+    row.appendChild(avatar);row.appendChild(wrap);chatWindow.appendChild(row);chatWindow.scrollTop=chatWindow.scrollHeight;
+  }
+
+  async function submitFeedback(question,answer,rating,upBtn,downBtn,thanks){
+    upBtn.disabled=true;downBtn.disabled=true;
+    upBtn.classList.toggle('selected',rating==='up');downBtn.classList.toggle('selected',rating==='down');
+    thanks.style.display='inline';
+    await fetch('/feedback',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({question,answer,rating})});
+  }
+
+  function showTyping(){
+    emptyState.style.display='none';
+    const row=document.createElement('div');row.className='msg-row bot';row.id='typing-row';
+    const avatar=document.createElement('div');avatar.className='avatar bot';avatar.textContent='🎓';
+    const typing=document.createElement('div');typing.className='typing-bubble';
+    typing.innerHTML='<div class="dot"></div><div class="dot"></div><div class="dot"></div>';
+    row.appendChild(avatar);row.appendChild(typing);chatWindow.appendChild(row);chatWindow.scrollTop=chatWindow.scrollHeight;
+  }
+
+  function removeTyping(){const t=document.getElementById('typing-row');if(t)t.remove();}
+
+  async function sendMessage(){
+    const text=msgInput.value.trim();if(!text)return;
+    lastQuestion=text;msgInput.value='';sendBtn.disabled=true;
+    appendMessage('user',text);showTyping();
+    try{
+      const res=await fetch('/ask',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({message:text,history:conversationHistory})});
+      const data=await res.json();removeTyping();appendMessage('bot',data.answer);
+      conversationHistory.push({user:text,bot:data.answer});
+      if(conversationHistory.length>6)conversationHistory.shift();
+      updateMemoryBadge();
+      if(speakerToggle.checked)speakAnswer(data.answer);
+    }catch(err){removeTyping();appendMessage('bot','⚠️ Something went wrong. / कुछ गलत हो गया।');}
+    finally{sendBtn.disabled=false;msgInput.focus();}
+  }
+
+  const SpeechRecognition=window.SpeechRecognition||window.webkitSpeechRecognition;
+  let recognition=null,isListening=false;
+  if(SpeechRecognition){
+    recognition=new SpeechRecognition();recognition.continuous=false;recognition.interimResults=false;
+    recognition.lang=langConfig[currentLang].speechLang;
+    recognition.onresult=function(e){const t=e.results[0][0].transcript;msgInput.value=t;stopListening();sendMessage();};
+    recognition.onerror=function(){stopListening();};recognition.onend=function(){stopListening();};
+  }
+
+  function toggleVoice(){if(!recognition){alert('Use Chrome or Edge for voice.');return;}isListening?stopListening():startListening();}
+  function startListening(){isListening=true;if(recognition)recognition.lang=langConfig[currentLang].speechLang;const b=document.getElementById('voice-btn');b.classList.add('listening');b.textContent='🔴';voiceStatus.classList.add('visible');msgInput.placeholder=langConfig[currentLang].voiceStatus;recognition.start();}
+  function stopListening(){isListening=false;const b=document.getElementById('voice-btn');b.classList.remove('listening');b.textContent='🎤';voiceStatus.classList.remove('visible');msgInput.placeholder=langConfig[currentLang].placeholder;try{recognition.stop();}catch(e){}}
+
+  function speakAnswer(text){
+    if(!window.speechSynthesis)return;window.speechSynthesis.cancel();
+    const u=new SpeechSynthesisUtterance(text);
+    const hasHindi=/[\u0900-\u097F]/.test(text);
+    u.lang=hasHindi?'hi-IN':'en-IN';u.rate=0.95;u.pitch=1;
+    window.speechSynthesis.speak(u);
+  }
+</script>
+</body>
+</html>""")
+
+print("🚀 Launching at http://localhost:8000")
+uvicorn.run(app, host="0.0.0.0", port=8000)

diagnose.py

@@ -0,0 +1,16 @@
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import Chroma
+
+embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+vectordb = Chroma(persist_directory="./db", embedding_function=embeddings)
+retriever = vectordb.as_retriever(search_kwargs={"k": 5})
+
+# Test with a question that the bot fails to answer
+query = "what is the name of college in etawah campus?"   # change this to a failing question
+docs = retriever.invoke(query)
+
+print(f"Retrieved {len(docs)} chunks:\n")
+for i, doc in enumerate(docs):
+    print(f"--- Chunk {i+1} ---")
+    print(doc.page_content)
+    print()

ingest.py

@@ -0,0 +1,47 @@
+import os
+import warnings
+warnings.filterwarnings("ignore")
+from dotenv import load_dotenv
+from langchain_community.document_loaders import PyPDFLoader
+from langchain_text_splitters import RecursiveCharacterTextSplitter
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import Chroma
+
+load_dotenv()
+
+print("📄 Loading your college PDF...")
+loader = PyPDFLoader("data/college_info.pdf")
+documents = loader.load()
+print(f"✅ Loaded {len(documents)} pages")
+
+print("✂️  Splitting into chunks...")
+splitter = RecursiveCharacterTextSplitter(
+    chunk_size=1000,   # increased from 500
+    chunk_overlap=100  # increased from 50
+)
+chunks = splitter.split_documents(documents)
+print(f"📦 Created {len(chunks)} chunks before deduplication")
+
+# ── Remove duplicate chunks ──
+seen = set()
+unique_chunks = []
+for chunk in chunks:
+    text = chunk.page_content.strip()
+    if text not in seen:
+        seen.add(text)
+        unique_chunks.append(chunk)
+
+print(f"✅ {len(unique_chunks)} unique chunks after deduplication (removed {len(chunks) - len(unique_chunks)} duplicates)")
+chunks = unique_chunks
+
+print("🧠 Loading embedding model...")
+embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+
+print("💾 Storing chunks in ChromaDB...")
+vectordb = Chroma.from_documents(
+    documents=chunks,
+    embedding=embeddings,
+    persist_directory="./db"
+)
+vectordb.persist()
+print("✅ All done! Your college knowledge base is ready.")

start.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+python app.py