# ===============================
# HuggingFace Spaces Dockerfile
# ===============================
# Optimized for 16GB RAM, Port 7860

# ===============================
# Stage 1: Build Frontend
# ===============================
FROM node:20-alpine AS frontend-builder

WORKDIR /frontend

COPY FRRONTEEEND/package*.json ./
RUN npm install

COPY FRRONTEEEND/ ./
RUN npm run build


# ===============================
# Stage 2: Build Python environment
# ===============================
FROM python:3.12-slim AS builder

# Install build dependencies (needed for ML wheels)
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    make \
    && rm -rf /var/lib/apt/lists/*

# Create virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Upgrade pip tooling
RUN pip install --upgrade pip setuptools wheel

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt


# ===============================
# Stage 3: Runtime environment
# ===============================
FROM python:3.12-slim

# Install runtime shared libraries
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgomp1 \
    libstdc++6 \
    && rm -rf /var/lib/apt/lists/*

# Copy virtual environment
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Create non-root user for HuggingFace Spaces
RUN useradd -m -u 1000 user
USER user

# App working directory
WORKDIR /home/user/app

# Copy backend code (as user)
COPY --chown=user:user src/ ./src/
COPY --chown=user:user examples/ ./examples/

# Copy frontend build
COPY --from=frontend-builder --chown=user:user /frontend/dist ./FRRONTEEEND/dist

# HuggingFace Spaces directories (user-writable)
RUN mkdir -p \
    /home/user/app/data \
    /home/user/app/outputs/models \
    /home/user/app/outputs/plots \
    /home/user/app/outputs/reports \
    /home/user/app/outputs/data \
    /home/user/app/cache_db

# Environment variables for HuggingFace Spaces
ENV PYTHONUNBUFFERED=1
ENV PORT=7860
ENV OUTPUT_DIR=/home/user/app/outputs
ENV CACHE_DB_PATH=/home/user/app/cache_db/cache.db
ENV ARTIFACT_BACKEND=local

# YData Profiling optimization for 16GB RAM (HuggingFace Spaces)
# Higher thresholds = better quality reports without sampling
ENV YDATA_MAX_ROWS=200000
ENV YDATA_MAX_SIZE_MB=100
ENV YDATA_SAMPLE_SIZE=150000

# HuggingFace Spaces uses port 7860 by default
EXPOSE 7860

# Start FastAPI on port 7860
CMD ["uvicorn", "src.api.app:app", "--host", "0.0.0.0", "--port", "7860"]