# Core dependencies
fastapi==0.104.1
uvicorn==0.23.2
pydantic==2.4.2
python-multipart==0.0.6
markdown==3.5.1  # Added markdown package

# Vector database and embeddings
chromadb==0.4.22
# chromadb 0.4.x uses np.float_, which numpy 2.0 removed — pin to 1.x.
numpy<2.0
torch>=2.2.0 --extra-index-url https://download.pytorch.org/whl/cpu  # Updated to compatible version

# IMPORTANT: These three packages must be compatible versions
huggingface_hub==0.17.3
transformers==4.33.2
accelerate==0.23.0

# Use sentence-transformers version after fixing other dependencies
sentence-transformers==2.2.2

# Document processing
pypdf==3.17.1
docx2txt==0.8

# Essential utilities
requests>=2.28.2
aiohttp>=3.8.4
psutil==5.9.5

# Enhanced capabilities
sympy>=1.11.1  # Math solving
duckduckgo-search>=7.5.0  # Web search
nltk>=3.8.1  # NLP capabilities
groq>=0.4.0  # FREE Groq API for fallback (14,400 requests/day)

# Phase 2: Claude + Tavily
anthropic>=0.39.0  # Claude API for RAG-grounded answers
tavily-python>=0.5.0  # Web search for /api/opportunities (FREE 1,000/month)

# NVIDIA NIM fallback (OpenAI-compatible, free tier) — stronger than Groq/Llama-70B
openai>=1.0.0

# Auth: server-side verification of Firebase ID tokens for /api/admin/* routes
firebase-admin>=6.5.0

# Aurora PostgreSQL data layer (structured product data + admin dashboard)
psycopg[binary,pool]>=3.1.0
boto3>=1.34.0  # generate_db_auth_token for IAM auth to Aurora

# Rate limiting / abuse protection on costly endpoints (LLM, uploads)
slowapi>=0.1.9