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#!/bin/bash

# ============================================================================
# VIVEKANANDA AI - AUTOMATED SETUP SCRIPT
# Sets up entire project structure and dependencies
# ============================================================================

set -e  # Exit on error

echo "========================================================================"
echo "πŸ•‰οΈ  VIVEKANANDA AI - PROJECT SETUP"
echo "========================================================================"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# ============================================================================
# STEP 1: CREATE DIRECTORY STRUCTURE
# ============================================================================

echo ""
echo "${GREEN}[STEP 1/7] Creating directory structure...${NC}"

mkdir -p data/raw/complete_works
mkdir -p data/raw/individual_books
mkdir -p data/processed
mkdir -p data/extracted_text
mkdir -p vectorstore
mkdir -p models/base
mkdir -p models/fine_tuned
mkdir -p scripts
mkdir -p notebooks
mkdir -p outputs/logs
mkdir -p outputs/results

echo "βœ“ Directory structure created"

# ============================================================================
# STEP 2: CREATE PYTHON VIRTUAL ENVIRONMENT
# ============================================================================

echo ""
echo "${GREEN}[STEP 2/7] Creating Python virtual environment...${NC}"

if [ ! -d "venv" ]; then
    python3 -m venv venv
    echo "βœ“ Virtual environment created"
else
    echo "βœ“ Virtual environment already exists"
fi

# Activate virtual environment
source venv/bin/activate

# ============================================================================
# STEP 3: UPGRADE PIP
# ============================================================================

echo ""
echo "${GREEN}[STEP 3/7] Upgrading pip...${NC}"

pip install --upgrade pip setuptools wheel
echo "βœ“ Pip upgraded"

# ============================================================================
# STEP 4: INSTALL DEPENDENCIES
# ============================================================================

echo ""
echo "${GREEN}[STEP 4/7] Installing dependencies...${NC}"

if [ -f "requirements.txt" ]; then
    pip install -r requirements.txt
    echo "βœ“ Dependencies installed"
else
    echo "${RED}βœ— requirements.txt not found!${NC}"
    exit 1
fi

# ============================================================================
# STEP 5: DOWNLOAD SPACY MODEL
# ============================================================================

echo ""
echo "${GREEN}[STEP 5/7] Downloading spaCy model...${NC}"

python -m spacy download en_core_web_sm
echo "βœ“ spaCy model downloaded"

# ============================================================================
# STEP 6: DOWNLOAD NLTK DATA
# ============================================================================

echo ""
echo "${GREEN}[STEP 6/7] Downloading NLTK data...${NC}"

python -c "
import nltk
nltk.download('punkt', quiet=True)
nltk.download('stopwords', quiet=True)
print('βœ“ NLTK data downloaded')
"

# ============================================================================
# STEP 7: VERIFY INSTALLATION
# ============================================================================

echo ""
echo "${GREEN}[STEP 7/7] Verifying installation...${NC}"

python -c "
import sys
import torch
import spacy
import nltk
from langchain import __version__ as lc_version

print(f'Python: {sys.version.split()[0]}')
print(f'PyTorch: {torch.__version__}')
print(f'spaCy: {spacy.__version__}')
print(f'NLTK: {nltk.__version__}')
print(f'LangChain: {lc_version}')

# Check device
if torch.backends.mps.is_available():
    print('Device: MPS (Apple Silicon) βœ“')
elif torch.cuda.is_available():
    print('Device: CUDA βœ“')
else:
    print('Device: CPU')
"

echo ""
echo "βœ“ Installation verified"

# ============================================================================
# FINAL INSTRUCTIONS
# ============================================================================

echo ""
echo "========================================================================"
echo "${GREEN}πŸŽ‰ SETUP COMPLETE!${NC}"
echo "========================================================================"
echo ""
echo "Next steps:"
echo ""
echo "1. ${YELLOW}Add your data:${NC}"
echo "   - PDFs β†’ data/raw/"
echo "   - JSON dataset β†’ data/processed/"
echo "   - Mistral model β†’ models/base/"
echo ""
echo "2. ${YELLOW}Configure:${NC}"
echo "   - Edit config.yaml to customize settings"
echo ""
echo "3. ${YELLOW}Create embeddings:${NC}"
echo "   source venv/bin/activate"
echo "   python scripts/01_embed_data.py"
echo ""
echo "4. ${YELLOW}Test RAG:${NC}"
echo "   python scripts/02_query_rag.py"
echo ""
echo "5. ${YELLOW}Run Streamlit:${NC}"
echo "   streamlit run app.py"
echo ""
echo "========================================================================"