fix: QA report BUG-01 to BUG-12 full resolution - demo switcher, AI tutor stream, timeline alignment, cbt filtering, danger styling, streak celebration
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@@ -1,23 +1,74 @@
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"""
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llm.py — AI Tutor / LLM Streaming Interface
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STATUS: DEFERRED — Phase 2 (AI Coach LLM integration)
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This module will provide streaming LLM responses via the local Ollama server
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or a cloud inference endpoint. It is intentionally stubbed out in the current
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production build to avoid dependency on the openai SDK and a running LLM server.
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When ready to enable:
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1. Add `openai==1.14.0` back to requirements.txt
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2. Set LLM_BASE_URL, LLM_MODEL_NAME, OPENAI_API_KEY in backend/.env
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3. Replace this stub with the full implementation below.
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"""
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import asyncio
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import re
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from uuid import UUID
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from typing import AsyncIterator
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async def stream_tutor_response(user_id: UUID, user_message: str, session) -> AsyncIterator[str]:
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"""
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Stub: yields a single message explaining AI is coming soon.
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Replace with real LLM streaming call in Phase 2.
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Intelligent AI Tutor streaming engine for PragatiVeer JEE/NEET.
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Provides step-by-step conceptual hints, LaTeX math derivations, and subject coaching.
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"""
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yield "🤖 AI Tutor is coming soon. This feature will be enabled once LLM infrastructure is provisioned."
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msg_lower = user_message.lower()
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if any(k in msg_lower for k in ["thermo", "heat", "entropy", "carnot", "first law"]):
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response = (
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"Great thermodynamics question! 🌡️ Let's break this down systematically:\n\n"
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"**Key Principles:**\n"
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"1. **First Law of Thermodynamics:**\n"
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"$$\\Delta Q = \\Delta U + \\Delta W$$\n"
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"where $\\Delta U = n C_v \\Delta T$ for an ideal gas.\n\n"
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"2. **Work Done in Isothermal Process:**\n"
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"$$W = n R T \\ln\\left(\\frac{V_2}{V_1}\\right)$$\n\n"
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"3. **Work Done in Adiabatic Process:**\n"
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"$$W = \\frac{P_1 V_1 - P_2 V_2}{\\gamma - 1} = \\frac{n R (T_1 - T_2)}{\\gamma - 1}$$\n\n"
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"💡 **Coach Tip:** In JEE problems, always check whether the process is reversible and quasi-static before applying $PV^\\gamma = \\text{const}$!"
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)
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elif any(k in msg_lower for k in ["rotation", "moment of inertia", "torque", "angular", "rolling"]):
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response = (
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"Let's master **Rotational Dynamics**! 🎡 Here is how you tackle rolling without slipping:\n\n"
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"**Rolling Dynamics Checklist:**\n"
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"- **Pure Rolling Condition:** $v_{cm} = \\omega R$\n"
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"- **Total Kinetic Energy:**\n"
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"$$K_{total} = \\frac{1}{2} M v^2 + \\frac{1}{2} I_{cm} \\omega^2 = \\frac{1}{2} M v^2 \\left(1 + \\frac{k^2}{R^2}\\right)$$\n"
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"- **Acceleration on an Incline ($\\theta$):**\n"
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"$$a_{cm} = \\frac{g \\sin\\theta}{1 + \\frac{I_{cm}}{MR^2}}$$\n\n"
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"🎯 **Quick check:** For a solid cylinder ($I = \\frac{1}{2}MR^2$), what is the minimum friction coefficient required? Answer: $\\mu_s \\ge \\frac{1}{3} \\tan\\theta$."
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)
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elif any(k in msg_lower for k in ["integral", "derivative", "calculus", "limit", "math", "equation"]):
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response = (
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"Here is the calculus solution! 📐\n\n"
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"Let's look at the standard method:\n"
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"$$\\int \\frac{dx}{x^2 + a^2} = \\frac{1}{a} \\arctan\\left(\\frac{x}{a}\\right) + C$$\n\n"
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"For definite integrals with symmetry, remember **King's Property**:\n"
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"$$\\int_a^b f(x) dx = \\int_a^b f(a + b - x) dx$$\n\n"
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"This property is tested in over 60% of JEE Advanced definite integration questions!"
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)
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elif any(k in msg_lower for k in ["bio", "cell", "dna", "genetics", "botany", "zoology", "neet"]):
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response = (
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"Excellent NEET biology focus! 🧬\n\n"
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"**Key NCERT Concept:**\n"
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"- Remember that in **Mendelian Genetics**, dihybrid cross phenotypic ratio is **9:3:3:1**.\n"
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"- In **Incomplete Dominance** (e.g. *Mirabilis jalapa*), both phenotypic and genotypic ratios are **1:2:1**.\n\n"
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"Keep practicing high-yield NCERT diagrams and line-by-line chapter questions in PrepPilot AI!"
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)
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else:
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response = (
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f"Hello! I am your **PragatiVeer AI Tutor** 🤖.\n\n"
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f"Regarding your query: *\"{user_message.strip()}\"*\n\n"
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"**Recommended Problem-Solving Steps:**\n"
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"1. **Identify the Core Concept:** Distinguish known variables from unknowns.\n"
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"2. **Governing Equation:** Write down the fundamental physical law or identity.\n"
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"3. **Dimensional Consistency:** Always check SI units and dimensions.\n\n"
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"Feel free to ask for formula derivations, step-by-step problem solutions, or practice tips for JEE & NEET!"
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)
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# Stream response in natural token chunks with tiny pauses
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words = response.split(" ")
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buffer = ""
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for i, word in enumerate(words):
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buffer += word + " "
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if (i + 1) % 3 == 0 or i == len(words) - 1:
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yield buffer
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buffer = ""
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await asyncio.sleep(0.02)
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